twilio-wp-plugin/admin/class-twp-admin.php

<?php
/**
 * Admin interface class
 */
class TWP_Admin {
    
    private $plugin_name;
    private $version;
    
    /**
     * Constructor
     */
    public function __construct($plugin_name, $version) {
        $this->plugin_name = $plugin_name;
        $this->version = $version;
    }
    
    /**
     * Verify AJAX nonce - checks both admin and frontend nonces
     */
    private function verify_ajax_nonce() {
        // Try admin nonce first
        if (wp_verify_nonce($_POST['nonce'] ?? '', 'twp_ajax_nonce')) {
            return true;
        }
        
        // Try frontend nonce
        if (wp_verify_nonce($_POST['nonce'] ?? '', 'twp_frontend_nonce')) {
            return true;
        }
        
        return false;
    }
    
    /**
     * Format timestamp with WordPress timezone
     * 
     * @param string $timestamp Database timestamp (assumed to be in UTC)
     * @param string $format Date format string
     * @return string Formatted date in WordPress timezone
     */
    private function format_timestamp_with_timezone($timestamp, $format = 'M j, Y g:i A') {
        // Get WordPress timezone
        $timezone = wp_timezone();
        
        // Create DateTime object from the UTC timestamp
        $date = new DateTime($timestamp, new DateTimeZone('UTC'));
        
        // Convert to WordPress timezone
        $date->setTimezone($timezone);
        
        // Return formatted date
        return $date->format($format);
    }
    
    /**
     * Register admin menu
     */
    public function add_plugin_admin_menu() {
        // Determine if user has any agent access
        $has_agent_access = current_user_can('twp_access_voicemails') ||
                           current_user_can('twp_access_call_log') ||
                           current_user_can('twp_access_agent_queue') ||
                           current_user_can('twp_access_sms_inbox') ||
                           current_user_can('twp_access_browser_phone');
        
        // Only show menu if user is admin or has agent access
        if (!current_user_can('manage_options') && !$has_agent_access) {
            return;
        }
        
        // Determine first available page for agents
        $first_page = 'twilio-wp-browser-phone'; // Default to browser phone
        if (current_user_can('twp_access_voicemails')) $first_page = 'twilio-wp-voicemails';
        elseif (current_user_can('twp_access_call_log')) $first_page = 'twilio-wp-call-logs';
        elseif (current_user_can('twp_access_agent_queue')) $first_page = 'twilio-wp-agent-queue';
        elseif (current_user_can('twp_access_sms_inbox')) $first_page = 'twilio-wp-sms-inbox';
        elseif (current_user_can('twp_access_browser_phone')) $first_page = 'twilio-wp-browser-phone';
        
        // Main menu - show dashboard for admins, redirect to first available page for agents
        if (current_user_can('manage_options')) {
            add_menu_page(
                'Twilio WP Plugin',
                'Twilio Phone',
                'manage_options',
                'twilio-wp-plugin',
                array($this, 'display_plugin_dashboard'),
                'dashicons-phone',
                30
            );
            
            add_submenu_page(
                'twilio-wp-plugin',
                'Dashboard',
                'Dashboard',
                'manage_options',
                'twilio-wp-plugin',
                array($this, 'display_plugin_dashboard')
            );
        } else {
            add_menu_page(
                'Twilio Phone',
                'Twilio Phone',
                'read',
                $first_page,
                null,
                'dashicons-phone',
                30
            );
        }
        
        // Admin-only pages
        if (current_user_can('manage_options')) {
            add_submenu_page(
                'twilio-wp-plugin',
                'Settings',
                'Settings',
                'manage_options',
                'twilio-wp-settings',
                array($this, 'display_plugin_settings')
            );

            add_submenu_page(
                'twilio-wp-plugin',
                'Mobile App',
                'Mobile App',
                'manage_options',
                'twilio-wp-mobile-app',
                array($this, 'display_mobile_app_settings')
            );

            add_submenu_page(
                'twilio-wp-plugin',
                'Phone Schedules',
                'Schedules',
                'manage_options',
                'twilio-wp-schedules',
                array($this, 'display_schedules_page')
            );
            
            add_submenu_page(
                'twilio-wp-plugin',
                'Workflows',
                'Workflows',
                'manage_options',
                'twilio-wp-workflows',
                array($this, 'display_workflows_page')
            );
            
            add_submenu_page(
                'twilio-wp-plugin',
                'Call Queues',
                'Queues',
                'manage_options',
                'twilio-wp-queues',
                array($this, 'display_queues_page')
            );
            
            add_submenu_page(
                'twilio-wp-plugin',
                'Phone Numbers',
                'Phone Numbers',
                'manage_options',
                'twilio-wp-numbers',
                array($this, 'display_numbers_page')
            );
            
            add_submenu_page(
                'twilio-wp-plugin',
                'Agent Groups',
                'Agent Groups',
                'manage_options',
                'twilio-wp-groups',
                array($this, 'display_groups_page')
            );
        }
        
        // Agent-accessible pages
        $menu_parent = current_user_can('manage_options') ? 'twilio-wp-plugin' : $first_page;
        
        if (current_user_can('manage_options') || current_user_can('twp_access_voicemails')) {
            add_submenu_page(
                $menu_parent,
                'Voicemails',
                'Voicemails',
                current_user_can('manage_options') ? 'manage_options' : 'twp_access_voicemails',
                'twilio-wp-voicemails',
                array($this, 'display_voicemails_page')
            );
        }
        
        if (current_user_can('manage_options') || current_user_can('twp_access_call_log')) {
            add_submenu_page(
                $menu_parent,
                'Call Logs',
                'Call Logs',
                current_user_can('manage_options') ? 'manage_options' : 'twp_access_call_log',
                'twilio-wp-call-logs',
                array($this, 'display_call_logs_page')
            );
        }
        
        if (current_user_can('manage_options') || current_user_can('twp_access_agent_queue')) {
            add_submenu_page(
                $menu_parent,
                'Agent Queue',
                'Agent Queue',
                current_user_can('manage_options') ? 'manage_options' : 'twp_access_agent_queue',
                'twilio-wp-agent-queue',
                array($this, 'display_agent_queue_page')
            );
        }
        
        // Outbound Calls page removed - functionality merged into Browser Phone
        // Keeping capability 'twp_access_outbound_calls' for backwards compatibility
        
        if (current_user_can('manage_options') || current_user_can('twp_access_sms_inbox')) {
            add_submenu_page(
                $menu_parent,
                'SMS Inbox',
                'SMS Inbox',
                current_user_can('manage_options') ? 'manage_options' : 'twp_access_sms_inbox',
                'twilio-wp-sms-inbox',
                array($this, 'display_sms_inbox_page')
            );
        }
        
        if (current_user_can('manage_options') || current_user_can('twp_access_browser_phone')) {
            add_submenu_page(
                $menu_parent,
                'Browser Phone',
                'Browser Phone',
                current_user_can('manage_options') ? 'manage_options' : 'twp_access_browser_phone',
                'twilio-wp-browser-phone',
                array($this, 'display_browser_phone_page')
            );
        }
    }
    
    /**
     * Display dashboard
     */
    public function display_plugin_dashboard() {
        ?>
        <div class="wrap">
            <h1>Twilio Phone System Dashboard</h1>
            
            <div class="twp-dashboard">
                <div class="twp-stats-grid">
                    <div class="twp-stat-card">
                        <h3>Active Calls</h3>
                        <div class="twp-stat-value" id="active-calls">0</div>
                    </div>
                    
                    <div class="twp-stat-card">
                        <h3>Calls in Queue</h3>
                        <div class="twp-stat-value" id="queued-calls">0</div>
                    </div>
                    
                    <div class="twp-stat-card">
                        <h3>Active Schedules</h3>
                        <div class="twp-stat-value" id="active-schedules">
                            <?php
                            global $wpdb;
                            $table = $wpdb->prefix . 'twp_phone_schedules';
                            echo $wpdb->get_var("SELECT COUNT(*) FROM $table WHERE is_active = 1");
                            ?>
                        </div>
                    </div>
                    
                    <div class="twp-stat-card">
                        <h3>Active Workflows</h3>
                        <div class="twp-stat-value" id="active-workflows">
                            <?php
                            global $wpdb;
                            $table = $wpdb->prefix . 'twp_workflows';
                            echo $wpdb->get_var("SELECT COUNT(*) FROM $table WHERE is_active = 1");
                            ?>
                        </div>
                    </div>
                </div>
                
                <div class="twp-recent-activity">
                    <h2>Recent Call Activity</h2>
                    <table class="wp-list-table widefat fixed striped">
                        <thead>
                            <tr>
                                <th>Time</th>
                                <th>From</th>
                                <th>To</th>
                                <th>Status</th>
                                <th>Duration</th>
                            </tr>
                        </thead>
                        <tbody id="recent-calls">
                            <tr>
                                <td colspan="5">No recent calls</td>
                            </tr>
                        </tbody>
                    </table>
                </div>
            </div>
        </div>
        <?php
    }
    
    /**
     * Display settings page
     */
    public function display_plugin_settings() {
        ?>
        <div class="wrap">
            <h1>Twilio WP Plugin Settings</h1>
            
            <form method="post" action="options.php">
                <?php settings_fields('twilio-wp-settings-group'); ?>
                
                <h2>Twilio API Settings</h2>
                <table class="form-table">
                    <tr>
                        <th scope="row">Account SID</th>
                        <td>
                            <input type="text" name="twp_twilio_account_sid" 
                                   value="<?php echo esc_attr(get_option('twp_twilio_account_sid')); ?>" 
                                   class="regular-text" />
                            <p class="description">Your Twilio Account SID</p>
                        </td>
                    </tr>
                    
                    <tr>
                        <th scope="row">Auth Token</th>
                        <td>
                            <input type="password" name="twp_twilio_auth_token" 
                                   value="<?php echo esc_attr(get_option('twp_twilio_auth_token')); ?>" 
                                   class="regular-text" />
                            <p class="description">Your Twilio Auth Token</p>
                        </td>
                    </tr>
                    
                    <tr>
                        <th scope="row">TwiML App SID</th>
                        <td>
                            <input type="text" name="twp_twiml_app_sid"
                                   value="<?php echo esc_attr(get_option('twp_twiml_app_sid')); ?>"
                                   class="regular-text" />
                            <p class="description">TwiML Application SID for Browser Phone (optional). <a href="#twiml-app-instructions">See setup instructions below</a></p>
                        </td>
                    </tr>

                    <tr>
                        <th scope="row">Twilio Edge Location</th>
                        <td>
                            <?php $current_edge = get_option('twp_twilio_edge', 'roaming'); ?>
                            <select name="twp_twilio_edge" class="regular-text">
                                <option value="roaming" <?php selected($current_edge, 'roaming'); ?>>Auto-select closest (Recommended)</option>
                                <option value="ashburn" <?php selected($current_edge, 'ashburn'); ?>>US East (Ashburn)</option>
                                <option value="umatilla" <?php selected($current_edge, 'umatilla'); ?>>US West (Umatilla)</option>
                                <option value="dublin" <?php selected($current_edge, 'dublin'); ?>>Europe - Ireland (Dublin)</option>
                                <option value="frankfurt" <?php selected($current_edge, 'frankfurt'); ?>>Europe - Germany (Frankfurt)</option>
                                <option value="singapore" <?php selected($current_edge, 'singapore'); ?>>Asia Pacific (Singapore)</option>
                                <option value="sydney" <?php selected($current_edge, 'sydney'); ?>>Australia (Sydney)</option>
                                <option value="tokyo" <?php selected($current_edge, 'tokyo'); ?>>Japan (Tokyo)</option>
                                <option value="sao-paulo" <?php selected($current_edge, 'sao-paulo'); ?>>South America (Sao Paulo)</option>
                            </select>
                            <p class="description">Edge location for browser phone calls. Use "Auto-select closest" for best call quality, or select a specific region.</p>
                        </td>
                    </tr>

                </table>
                
                <h2>Eleven Labs API Settings</h2>
                <table class="form-table">
                    <tr>
                        <th scope="row">API Key</th>
                        <td>
                            <input type="password" name="twp_elevenlabs_api_key" 
                                   value="<?php echo esc_attr(get_option('twp_elevenlabs_api_key')); ?>" 
                                   class="regular-text" />
                            <p class="description">Your Eleven Labs API Key</p>
                        </td>
                    </tr>
                    
                    <tr>
                        <th scope="row">Model</th>
                        <td>
                            <select name="twp_elevenlabs_model_id" id="elevenlabs-model-select" class="regular-text">
                                <option value="">Select a model...</option>
                                <option value="eleven_multilingual_v2" <?php selected(get_option('twp_elevenlabs_model_id', 'eleven_multilingual_v2'), 'eleven_multilingual_v2'); ?>>
                                    Multilingual v2 (Recommended)
                                </option>
                                <option value="eleven_monolingual_v1" <?php selected(get_option('twp_elevenlabs_model_id'), 'eleven_monolingual_v1'); ?>>
                                    Monolingual v1
                                </option>
                                <option value="eleven_multilingual_v1" <?php selected(get_option('twp_elevenlabs_model_id'), 'eleven_multilingual_v1'); ?>>
                                    Multilingual v1
                                </option>
                                <option value="eleven_turbo_v2" <?php selected(get_option('twp_elevenlabs_model_id'), 'eleven_turbo_v2'); ?>>
                                    Turbo v2 (Faster)
                                </option>
                            </select>
                            <button type="button" class="button" onclick="loadElevenLabsModels()">Load Available Models</button>
                            <p class="description">Text-to-speech model to use. Multilingual v2 is recommended for best quality. Turbo v2 offers faster generation.</p>
                        </td>
                    </tr>
                    
                    <tr>
                        <th scope="row">Default Voice</th>
                        <td>
                            <select name="twp_elevenlabs_voice_id" id="elevenlabs-voice-select" class="regular-text" 
                                    data-current="<?php echo esc_attr(get_option('twp_elevenlabs_voice_id')); ?>">
                                <option value="">Select a voice...</option>
                                <?php 
                                $current_voice = get_option('twp_elevenlabs_voice_id');
                                if ($current_voice): ?>
                                    <option value="<?php echo esc_attr($current_voice); ?>" selected>
                                        Current Voice (<?php echo esc_html($current_voice); ?>)
                                    </option>
                                <?php endif; ?>
                            </select>
                            <button type="button" class="button" onclick="loadElevenLabsVoices()">Load Voices</button>
                            <button type="button" class="button" onclick="refreshElevenLabsVoices()" title="Refresh voices from ElevenLabs">🔄 Refresh</button>
                            <p class="description">Default voice for text-to-speech. Click "Load Voices" after entering your API key, or "Refresh" to get updated voices.</p>
                            <?php if (WP_DEBUG): ?>
                                <p class="description"><small>Debug: Current saved voice ID = "<?php echo esc_html(get_option('twp_elevenlabs_voice_id', 'empty')); ?>"</small></p>
                            <?php endif; ?>
                        </td>
                    </tr>
                </table>
                
                <h2>Call Settings</h2>
                <table class="form-table">
                    <tr>
                        <th scope="row">Default Queue Music URL</th>
                        <td>
                            <input type="url" name="twp_default_queue_music_url" 
                                   value="<?php echo esc_attr(get_option('twp_default_queue_music_url', 'https://www.soundjay.com/misc/sounds/bell-ringing-05.wav')); ?>" 
                                   class="regular-text" />
                            <p class="description">Default music for queue wait times and call hold when no specific music is set. Must be publicly accessible MP3 or WAV file.</p>
                            <p class="description"><strong>Default:</strong> Gentle bell tone (much better than cowbell!). <strong>Better alternatives:</strong></p>
                            <ul class="description">
                                <li>• Upload your own music to WordPress Media Library and use that URL</li>
                                <li>• <strong>Freesound.org</strong> - Free royalty-free music and sounds</li>
                                <li>• <strong>Archive.org</strong> - Public domain classical music</li>
                                <li>• <strong>Incompetech.com</strong> - Kevin MacLeod's royalty-free music</li>
                                <li>• <strong>Zapsplat.com</strong> - Professional hold music (free account required)</li>
                            </ul>
                        </td>
                    </tr>
                    
                    <tr>
                        <th scope="row">Hold Music URL</th>
                        <td>
                            <input type="url" name="twp_hold_music_url" 
                                   value="<?php echo esc_attr(get_option('twp_hold_music_url', '')); ?>" 
                                   class="regular-text" 
                                   placeholder="Leave empty to use default queue music" />
                            <p class="description">Specific music for when calls are placed on hold. Leave empty to use the default queue music above.</p>
                            <p class="description"><strong>Suggested sources:</strong> Upload to your Media Library or use a service like Freesound.org for royalty-free music.</p>
                        </td>
                    </tr>
                </table>
                
                <h2>Default Queue Settings</h2>
                <table class="form-table">
                    <tr>
                        <th scope="row">Queue Timeout (seconds)</th>
                        <td>
                            <input type="number" name="twp_default_queue_timeout" 
                                   value="<?php echo esc_attr(get_option('twp_default_queue_timeout', 300)); ?>" 
                                   min="30" max="3600" />
                            <p class="description">Default timeout for calls in queue</p>
                        </td>
                    </tr>
                    
                    <tr>
                        <th scope="row">Queue Size</th>
                        <td>
                            <input type="number" name="twp_default_queue_size" 
                                   value="<?php echo esc_attr(get_option('twp_default_queue_size', 10)); ?>" 
                                   min="1" max="100" />
                            <p class="description">Default maximum queue size</p>
                        </td>
                    </tr>
                </table>
                
                <h2>Webhook URLs</h2>
                <table class="form-table">
                    <tr>
                        <th scope="row">Voice Webhook</th>
                        <td>
                            <code><?php echo rest_url('twilio-webhook/v1/voice'); ?></code>
                            <button type="button" class="button" onclick="copyToClipboard('<?php echo rest_url('twilio-webhook/v1/voice'); ?>')">Copy</button>
                        </td>
                    </tr>
                    
                    <tr>
                        <th scope="row">SMS Webhook</th>
                        <td>
                            <code><?php echo rest_url('twilio-webhook/v1/sms'); ?></code>
                            <button type="button" class="button" onclick="copyToClipboard('<?php echo rest_url('twilio-webhook/v1/sms'); ?>')">Copy</button>
                        </td>
                    </tr>
                    
                    <tr>
                        <th scope="row">Status Webhook</th>
                        <td>
                            <code><?php echo rest_url('twilio-webhook/v1/status'); ?></code>
                            <button type="button" class="button" onclick="copyToClipboard('<?php echo rest_url('twilio-webhook/v1/status'); ?>')">Copy</button>
                        </td>
                    </tr>
                    
                    <tr>
                        <th scope="row">Transcription Webhook</th>
                        <td>
                            <code><?php echo rest_url('twilio-webhook/v1/transcription'); ?></code>
                            <button type="button" class="button" onclick="copyToClipboard('<?php echo rest_url('twilio-webhook/v1/transcription'); ?>')">Copy</button>
                            <p class="description">Used for automatic voicemail transcription callbacks</p>
                        </td>
                    </tr>
                </table>
                
                <h2>Voicemail & Transcription Settings</h2>
                <table class="form-table">
                    <tr>
                        <th scope="row">Urgent Keywords</th>
                        <td>
                            <input type="text" name="twp_urgent_keywords" 
                                   value="<?php echo esc_attr(get_option('twp_urgent_keywords', 'urgent,emergency,important,asap,help')); ?>" 
                                   class="large-text" />
                            <p class="description">Comma-separated keywords that trigger urgent notifications when found in voicemail transcriptions. Example: urgent,emergency,important,asap,help</p>
                        </td>
                    </tr>
                    
                    <tr>
                        <th scope="row">SMS Notification Number</th>
                        <td>
                            <input type="text" name="twp_sms_notification_number" 
                                   value="<?php echo esc_attr(get_option('twp_sms_notification_number')); ?>" 
                                   class="regular-text" 
                                   placeholder="+1234567890" />
                            <p class="description">Phone number to receive SMS notifications for urgent voicemails. Use full international format (e.g., +1234567890)</p>
                        </td>
                    </tr>
                    
                    <tr>
                        <th scope="row">Default SMS From Number</th>
                        <td>
                            <select name="twp_default_sms_number" id="default-sms-number" class="regular-text">
                                <option value="">Select a Twilio number...</option>
                                <?php
                                // Get current value
                                $current_sms_number = get_option('twp_default_sms_number');
                                
                                try {
                                    // Get Twilio phone numbers
                                    $twilio = new TWP_Twilio_API();
                                    $numbers_result = $twilio->get_phone_numbers();
                                    
                                    if ($numbers_result['success'] && isset($numbers_result['data']['incoming_phone_numbers'])) {
                                        $numbers = $numbers_result['data']['incoming_phone_numbers'];
                                        if (is_array($numbers) && !empty($numbers)) {
                                            foreach ($numbers as $number) {
                                                $phone = isset($number['phone_number']) ? $number['phone_number'] : '';
                                                $friendly_name = isset($number['friendly_name']) ? $number['friendly_name'] : $phone;
                                                if (!empty($phone)) {
                                                    $selected = ($phone === $current_sms_number) ? ' selected' : '';
                                                    echo '<option value="' . esc_attr($phone) . '"' . $selected . '>' . esc_html($friendly_name . ' (' . $phone . ')') . '</option>';
                                                }
                                            }
                                        }
                                    }
                                } catch (Exception $e) {
                                    // If there's an error loading numbers, show the current value as a manual input
                                    if (!empty($current_sms_number)) {
                                        echo '<option value="' . esc_attr($current_sms_number) . '" selected>' . esc_html($current_sms_number . ' (configured)') . '</option>';
                                    }
                                }
                                ?>
                            </select>
                            <button type="button" onclick="loadTwilioNumbers('default-sms-number')" class="button" style="margin-left: 10px;">Refresh Numbers</button>
                            <p class="description">Default Twilio phone number to use as sender for SMS messages when not in a workflow context.</p>
                        </td>
                    </tr>
                </table>

                <h2>SMS Provider Settings</h2>
                <table class="form-table">
                    <tr>
                        <th scope="row">SMS Provider</th>
                        <td>
                            <?php $sms_provider = get_option('twp_sms_provider', 'twilio'); ?>
                            <select name="twp_sms_provider" id="twp_sms_provider" class="regular-text">
                                <option value="twilio" <?php selected($sms_provider, 'twilio'); ?>>Twilio (Default)</option>
                                <option value="aws_sns" <?php selected($sms_provider, 'aws_sns'); ?>>Amazon SNS</option>
                            </select>
                            <p class="description">Choose which service to use for sending SMS messages. If you're having trouble getting Twilio SMS approved, Amazon SNS is an alternative.</p>
                        </td>
                    </tr>

                    <!-- Amazon SNS Settings -->
                    <tr class="aws-sns-setting" style="<?php echo ($sms_provider !== 'aws_sns') ? 'display:none;' : ''; ?>">
                        <th scope="row">AWS Access Key ID</th>
                        <td>
                            <input type="text" name="twp_aws_access_key"
                                   value="<?php echo esc_attr(get_option('twp_aws_access_key')); ?>"
                                   class="regular-text"
                                   placeholder="AKIAIOSFODNN7EXAMPLE" />
                            <p class="description">Your AWS IAM access key with SNS permissions. <a href="https://docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_access-keys.html" target="_blank">How to create AWS access keys</a></p>
                        </td>
                    </tr>

                    <tr class="aws-sns-setting" style="<?php echo ($sms_provider !== 'aws_sns') ? 'display:none;' : ''; ?>">
                        <th scope="row">AWS Secret Access Key</th>
                        <td>
                            <input type="password" name="twp_aws_secret_key"
                                   value="<?php echo esc_attr(get_option('twp_aws_secret_key')); ?>"
                                   class="regular-text"
                                   placeholder="wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY" />
                            <p class="description">Your AWS IAM secret key. Keep this secure.</p>
                        </td>
                    </tr>

                    <tr class="aws-sns-setting" style="<?php echo ($sms_provider !== 'aws_sns') ? 'display:none;' : ''; ?>">
                        <th scope="row">AWS Region</th>
                        <td>
                            <?php $aws_region = get_option('twp_aws_region', 'us-east-1'); ?>
                            <select name="twp_aws_region" class="regular-text">
                                <option value="us-east-1" <?php selected($aws_region, 'us-east-1'); ?>>US East (N. Virginia) - us-east-1</option>
                                <option value="us-east-2" <?php selected($aws_region, 'us-east-2'); ?>>US East (Ohio) - us-east-2</option>
                                <option value="us-west-1" <?php selected($aws_region, 'us-west-1'); ?>>US West (N. California) - us-west-1</option>
                                <option value="us-west-2" <?php selected($aws_region, 'us-west-2'); ?>>US West (Oregon) - us-west-2</option>
                                <option value="eu-west-1" <?php selected($aws_region, 'eu-west-1'); ?>>EU (Ireland) - eu-west-1</option>
                                <option value="eu-central-1" <?php selected($aws_region, 'eu-central-1'); ?>>EU (Frankfurt) - eu-central-1</option>
                                <option value="ap-southeast-1" <?php selected($aws_region, 'ap-southeast-1'); ?>>Asia Pacific (Singapore) - ap-southeast-1</option>
                                <option value="ap-northeast-1" <?php selected($aws_region, 'ap-northeast-1'); ?>>Asia Pacific (Tokyo) - ap-northeast-1</option>
                            </select>
                            <p class="description">AWS region where your SNS service is configured.</p>
                        </td>
                    </tr>

                    <tr class="aws-sns-setting" style="<?php echo ($sms_provider !== 'aws_sns') ? 'display:none;' : ''; ?>">
                        <th scope="row">SMS Sender ID (Optional)</th>
                        <td>
                            <input type="text" name="twp_aws_sns_sender_id"
                                   value="<?php echo esc_attr(get_option('twp_aws_sns_sender_id')); ?>"
                                   class="regular-text"
                                   placeholder="MyCompany"
                                   maxlength="11" />
                            <p class="description">Alphanumeric sender ID (3-11 characters). Supported in some countries. Leave blank to use default AWS number.</p>
                        </td>
                    </tr>

                    <tr>
                        <th scope="row">Queue Timeout Action</th>
                        <td>
                            <?php $timeout_action = get_option('twp_queue_timeout_action', 'voicemail'); ?>
                            <select name="twp_queue_timeout_action" class="regular-text">
                                <option value="voicemail" <?php selected($timeout_action, 'voicemail'); ?>>Take Voicemail</option>
                                <option value="callback" <?php selected($timeout_action, 'callback'); ?>>Offer Callback</option>
                            </select>
                            <p class="description">What to do when a caller reaches the queue timeout limit. Voicemail is recommended for better caller experience.</p>
                        </td>
                    </tr>
                </table>

                <script>
                jQuery(document).ready(function($) {
                    // Show/hide AWS SNS settings based on provider selection
                    $('#twp_sms_provider').on('change', function() {
                        if ($(this).val() === 'aws_sns') {
                            $('.aws-sns-setting').show();
                        } else {
                            $('.aws-sns-setting').hide();
                        }
                    });
                });
                </script>

                <h2>Voicemail & Notification Settings</h2>
                <table class="form-table">
                    <!-- Discord/Slack Notifications Section -->
                    <tr valign="top">
                        <td colspan="2">
                            <h3 style="margin-top: 30px; margin-bottom: 15px;">Discord & Slack Notifications</h3>
                            <p class="description">Configure webhook URLs to receive call notifications in Discord and/or Slack channels.</p>
                        </td>
                    </tr>
                    
                    <tr valign="top">
                        <th scope="row">Discord Webhook URL</th>
                        <td>
                            <input type="url" name="twp_discord_webhook_url" value="<?php echo esc_attr(get_option('twp_discord_webhook_url')); ?>" class="regular-text" placeholder="https://discord.com/api/webhooks/..." />
                            <p class="description">Discord webhook URL for call notifications. <a href="https://support.discord.com/hc/en-us/articles/228383668-Intro-to-Webhooks" target="_blank">How to create a Discord webhook</a></p>
                        </td>
                    </tr>
                    
                    <tr valign="top">
                        <th scope="row">Slack Webhook URL</th>
                        <td>
                            <input type="url" name="twp_slack_webhook_url" value="<?php echo esc_attr(get_option('twp_slack_webhook_url')); ?>" class="regular-text" placeholder="https://hooks.slack.com/services/..." />
                            <p class="description">Slack webhook URL for call notifications. <a href="https://slack.com/help/articles/115005265063-Incoming-webhooks-for-Slack" target="_blank">How to create a Slack webhook</a></p>
                        </td>
                    </tr>
                    
                    <tr valign="top">
                        <th scope="row">Notification Settings</th>
                        <td>
                            <fieldset>
                                <label>
                                    <input type="checkbox" name="twp_notify_on_incoming_calls" value="1" <?php checked(get_option('twp_notify_on_incoming_calls', 1)); ?> />
                                    Notify on incoming calls
                                </label><br>
                                <label>
                                    <input type="checkbox" name="twp_notify_on_queue_timeout" value="1" <?php checked(get_option('twp_notify_on_queue_timeout', 1)); ?> />
                                    Notify when calls stay in queue too long
                                </label><br>
                                <label>
                                    <input type="checkbox" name="twp_notify_on_missed_calls" value="1" <?php checked(get_option('twp_notify_on_missed_calls', 1)); ?> />
                                    Notify on missed calls
                                </label>
                            </fieldset>
                            <p class="description">Choose which events trigger Discord/Slack notifications.</p>
                        </td>
                    </tr>
                    
                    <tr valign="top">
                        <th scope="row">Queue Timeout Threshold</th>
                        <td>
                            <input type="number" name="twp_queue_timeout_threshold" value="<?php echo esc_attr(get_option('twp_queue_timeout_threshold', 300)); ?>" min="30" max="1800" />
                            <span>seconds</span>
                            <p class="description">Send notification if call stays in queue longer than this time (30-1800 seconds).</p>
                        </td>
                    </tr>
                </table>
                
                <?php submit_button(); ?>
            </form>
            
            <hr>
            
            <h2>Phone Number Maintenance</h2>
            <div class="card">
                <h3>Real-Time Queue Cleanup Configuration</h3>
                <p>Configure individual phone numbers to send status callbacks when calls end, enabling real-time queue cleanup.</p>
                <p><strong>When enabled:</strong> Calls will be removed from queue immediately when callers hang up.</p>
                
                <div id="phone-numbers-list" style="margin: 20px 0;">
                    <p style="color: #666;">Loading phone numbers...</p>
                </div>
                
                <div style="margin-top: 20px; padding-top: 20px; border-top: 1px solid #ddd;">
                    <button type="button" class="button" id="refresh-numbers-btn">
                        Refresh List
                    </button>
                    <button type="button" class="button button-primary" id="update-all-numbers-btn" style="display: none;">
                        Enable for All Numbers
                    </button>
                </div>
                
                <div id="update-result" style="margin-top: 10px;"></div>
            </div>
            
            <hr id="twiml-app-instructions">
            
            <h2>TwiML App Setup for Browser Phone</h2>
            <div class="card">
                <h3>Auto-Configuration (Recommended)</h3>
                <p>Let the plugin automatically set up everything for you:</p>
                <div style="background: #e7f5e7; padding: 15px; border-radius: 4px; margin-bottom: 20px;">
                    <div style="margin-bottom: 15px;">
                        <button type="button" id="auto-configure-btn" class="button button-primary button-large">
                            🔧 Auto-Configure Browser Phone
                        </button>
                        <button type="button" id="configure-numbers-btn" class="button button-secondary" style="margin-left: 10px;">
                            📞 Configure Phone Numbers Only
                        </button>
                    </div>
                    
                    <div style="margin-bottom: 15px; padding: 15px; background: #fff; border: 1px solid #c3e6cb; border-radius: 4px;">
                        <h4 style="margin-top: 0;">Select Phone Numbers to Configure:</h4>
                        <div id="phone-numbers-selection">
                            <p style="color: #666;">Loading phone numbers...</p>
                        </div>
                        <div style="margin-top: 10px;">
                            <button type="button" id="select-all-numbers" class="button button-small">Select All</button>
                            <button type="button" id="deselect-all-numbers" class="button button-small" style="margin-left: 5px;">Deselect All</button>
                        </div>
                    </div>
                    
                    <div style="margin-bottom: 10px;">
                        <label style="font-weight: bold;">
                            <input type="checkbox" id="enable-smart-routing" checked> 
                            Enable Smart Routing on Selected Numbers
                        </label>
                        <p style="margin: 5px 0 0 25px; color: #666; font-size: 13px;">Routes calls based on agent preferences (browser vs cell phone)</p>
                    </div>
                    <p style="margin: 10px 0 0 0; color: #155724;">
                        <strong>Full Setup:</strong> Create TwiML App, set webhooks, configure selected phone numbers.<br>
                        <strong>Numbers Only:</strong> Configure selected phone numbers with smart routing (requires TwiML App already set up).
                    </p>
                </div>
                <div id="auto-configure-result" style="margin-top: 15px;"></div>
                
                <hr style="margin: 30px 0;">
                
                <h3>Manual Setup Instructions</h3>
                <p>Or follow these steps to set up manually in your Twilio Console:</p>
                
                <div class="setup-steps">
                    <div class="step">
                        <h4>1. Create TwiML Application</h4>
                        <ol>
                            <li>Go to <a href="https://console.twilio.com/us1/develop/voice/manage/twiml-apps" target="_blank">Twilio Console → Voice → TwiML Apps</a></li>
                            <li>Click <strong>"Create new TwiML App"</strong></li>
                            <li>Enter a friendly name: <code>Browser Phone App</code></li>
                            <li>Set Voice URL to: <code><?php echo home_url('/wp-json/twilio-webhook/v1/browser-voice'); ?></code> 
                                <button type="button" class="button button-small" onclick="copyToClipboard('<?php echo home_url('/wp-json/twilio-webhook/v1/browser-voice'); ?>')">Copy</button>
                            </li>
                            <li>Set HTTP Method to: <strong>POST</strong></li>
                            <li>Leave Status Callback URL empty (optional)</li>
                            <li>Click <strong>"Save"</strong></li>
                        </ol>
                    </div>
                    
                    <div class="step">
                        <h4>2. Get TwiML App SID</h4>
                        <ol>
                            <li>After creating the app, copy the <strong>App SID</strong> (starts with <code>AP...</code>)</li>
                            <li>Paste it in the <strong>"TwiML App SID"</strong> field above</li>
                            <li>Click <strong>"Save Changes"</strong></li>
                        </ol>
                    </div>
                    
                    <div class="step">
                        <h4>3. Test Browser Phone</h4>
                        <ol>
                            <li>Go to <strong>Twilio WP Plugin → Browser Phone</strong></li>
                            <li>Wait for status to show <span style="color: #4CAF50;">"Ready"</span></li>
                            <li>Enter a phone number and select caller ID</li>
                            <li>Click <strong>"Call"</strong> to test outbound calling</li>
                        </ol>
                    </div>
                </div>
                
                <div class="setup-info">
                    <h4>How It Works</h4>
                    <ul>
                        <li><strong>Outbound Calls:</strong> Click "Call" to dial any phone number from your browser</li>
                        <li><strong>Incoming Calls:</strong> Calls can be routed to your browser instead of cell phone</li>
                        <li><strong>Call Quality:</strong> Uses your internet connection for high-quality VoIP calls</li>
                        <li><strong>No Cell Phone:</strong> Agents can work entirely from their computer</li>
                    </ul>
                </div>
                
                <div class="troubleshooting">
                    <h4>Troubleshooting</h4>
                    <ul>
                        <li><strong>"valid callerId must be provided":</strong> 
                            <ul>
                                <li>Make sure you select a Caller ID before calling</li>
                                <li>The Caller ID must be a phone number you own in Twilio</li>
                                <li>Go to <a href="https://console.twilio.com/us1/develop/phone-numbers/manage/incoming" target="_blank">Twilio Console → Phone Numbers</a> to verify your numbers</li>
                            </ul>
                        </li>
                        <li><strong>Status shows "Error":</strong> Check that TwiML App SID is correctly configured</li>
                        <li><strong>"Failed to initialize":</strong> Verify Twilio credentials are correct</li>
                        <li><strong>Browser blocks microphone:</strong> Allow microphone access when prompted</li>
                        <li><strong>Poor call quality:</strong> Check internet connection and try different browser</li>
                        <li><strong>"No audio" on calls:</strong> Check browser microphone permissions and refresh the page</li>
                    </ul>
                </div>
                
                <style>
                .setup-steps .step {
                    margin-bottom: 30px;
                    padding: 20px;
                    background: #f9f9f9;
                    border-left: 4px solid #0073aa;
                }
                .setup-steps h4 {
                    margin-top: 0;
                    color: #0073aa;
                }
                .setup-info {
                    background: #e7f5e7;
                    padding: 15px;
                    border-radius: 4px;
                    margin: 20px 0;
                }
                .troubleshooting {
                    background: #fff3cd;
                    padding: 15px;
                    border-radius: 4px;
                    margin: 20px 0;
                }
                </style>
            </div>
            
            <script>
            // Phone number management
            var statusCallbackUrl = '<?php echo home_url('/wp-json/twilio-webhook/v1/status'); ?>';
            
            function loadPhoneNumbers() {
                var listDiv = document.getElementById('phone-numbers-list');
                listDiv.innerHTML = '<p style="color: #666;">Loading phone numbers...</p>';
                
                var xhr = new XMLHttpRequest();
                xhr.open('POST', ajaxurl);
                xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
                
                xhr.onload = function() {
                    try {
                        var response = JSON.parse(xhr.responseText);
                        console.log('Phone numbers response:', response);
                        
                        if (response.success && response.data) {
                            if (response.data.length === 0) {
                                listDiv.innerHTML = '<p style="color: #666;">No phone numbers found in your Twilio account. <a href="#" onclick="location.reload();">Refresh</a></p>';
                                return;
                            }
                            
                            var html = '<table style="width: 100%; border-collapse: collapse;">';
                            html += '<thead><tr>';
                            html += '<th style="text-align: left; padding: 10px; border-bottom: 2px solid #ddd;">Phone Number</th>';
                            html += '<th style="text-align: left; padding: 10px; border-bottom: 2px solid #ddd;">Name</th>';
                            html += '<th style="text-align: center; padding: 10px; border-bottom: 2px solid #ddd;">Status Callbacks</th>';
                            html += '<th style="text-align: center; padding: 10px; border-bottom: 2px solid #ddd;">Action</th>';
                            html += '</tr></thead><tbody>';
                            
                            response.data.forEach(function(number) {
                                var isEnabled = number.status_callback_url === statusCallbackUrl;
                                var statusColor = isEnabled ? '#28a745' : '#dc3545';
                                var statusText = isEnabled ? 'Enabled' : 'Disabled';
                                var buttonText = isEnabled ? 'Disable' : 'Enable';
                                var buttonClass = isEnabled ? 'button-secondary' : 'button-primary';
                                
                                html += '<tr>';
                                html += '<td style="padding: 10px; border-bottom: 1px solid #eee;">' + number.phone_number + '</td>';
                                html += '<td style="padding: 10px; border-bottom: 1px solid #eee;">' + (number.friendly_name || 'N/A') + '</td>';
                                html += '<td style="text-align: center; padding: 10px; border-bottom: 1px solid #eee;">';
                                html += '<span style="color: ' + statusColor + '; font-weight: bold;">' + statusText + '</span>';
                                if (isEnabled) {
                                    html += '<br><small style="color: #666;">Real-time cleanup active</small>';
                                }
                                html += '</td>';
                                html += '<td style="text-align: center; padding: 10px; border-bottom: 1px solid #eee;">';
                                html += '<button type="button" class="button ' + buttonClass + ' toggle-status-btn" ';
                                html += 'data-sid="' + number.sid + '" ';
                                html += 'data-number="' + number.phone_number + '" ';
                                html += 'data-enabled="' + isEnabled + '">';
                                html += buttonText + '</button>';
                                html += '</td>';
                                html += '</tr>';
                            });
                            
                            html += '</tbody></table>';
                            listDiv.innerHTML = html;
                            
                            // Show "Enable All" button if there are disabled numbers
                            var hasDisabled = response.data.some(function(n) {
                                return n.status_callback_url !== statusCallbackUrl;
                            });
                            document.getElementById('update-all-numbers-btn').style.display = hasDisabled ? 'inline-block' : 'none';
                            
                            // Attach event listeners to toggle buttons
                            document.querySelectorAll('.toggle-status-btn').forEach(function(btn) {
                                btn.addEventListener('click', toggleNumberStatus);
                            });
                        } else {
                            var errorMsg = response.error || 'Failed to load phone numbers';
                            listDiv.innerHTML = '<p style="color: #dc3545;">' + errorMsg + '</p>';
                            console.error('Failed to load phone numbers:', response);
                        }
                    } catch(e) {
                        listDiv.innerHTML = '<p style="color: #dc3545;">Error loading phone numbers: ' + e.message + '</p>';
                        console.error('Error parsing response:', e, xhr.responseText);
                    }
                };
                
                xhr.send('action=twp_get_phone_numbers&nonce=' + '<?php echo wp_create_nonce('twp_ajax_nonce'); ?>');
            }
            
            function toggleNumberStatus(e) {
                var button = e.target;
                var sid = button.dataset.sid;
                var number = button.dataset.number;
                var isEnabled = button.dataset.enabled === 'true';
                var resultDiv = document.getElementById('update-result');
                
                button.disabled = true;
                button.textContent = 'Updating...';
                
                var xhr = new XMLHttpRequest();
                xhr.open('POST', ajaxurl);
                xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
                
                xhr.onload = function() {
                    button.disabled = false;
                    
                    try {
                        var response = JSON.parse(xhr.responseText);
                        
                        if (response.success) {
                            resultDiv.innerHTML = '<div style="background: #d4edda; border: 1px solid #c3e6cb; padding: 10px; border-radius: 4px; margin-top: 10px;">' +
                                '<strong style="color: #155724;">✅ Success!</strong> ' + number + ' has been updated.</div>';
                            
                            // Reload the list to show updated status
                            setTimeout(loadPhoneNumbers, 1000);
                        } else {
                            button.textContent = isEnabled ? 'Disable' : 'Enable';
                            resultDiv.innerHTML = '<div style="background: #f8d7da; border: 1px solid #f5c6cb; padding: 10px; border-radius: 4px; margin-top: 10px;">' +
                                '<strong style="color: #721c24;">❌ Error:</strong> ' + response.error + '</div>';
                        }
                    } catch(e) {
                        button.textContent = isEnabled ? 'Disable' : 'Enable';
                        resultDiv.innerHTML = '<div style="background: #f8d7da; border: 1px solid #f5c6cb; padding: 10px; border-radius: 4px; margin-top: 10px;">' +
                            '<strong style="color: #721c24;">❌ Error:</strong> Failed to update number</div>';
                    }
                };
                
                var params = 'action=twp_toggle_number_status_callback&nonce=' + '<?php echo wp_create_nonce('twp_nonce'); ?>' +
                    '&sid=' + encodeURIComponent(sid) +
                    '&enable=' + (!isEnabled);
                
                xhr.send(params);
            }
            
            // Refresh button
            document.getElementById('refresh-numbers-btn').addEventListener('click', loadPhoneNumbers);
            
            // Enable all button
            document.getElementById('update-all-numbers-btn').addEventListener('click', function() {
                var button = this;
                var resultDiv = document.getElementById('update-result');
                
                button.disabled = true;
                button.textContent = 'Updating All...';
                
                var xhr = new XMLHttpRequest();
                xhr.open('POST', ajaxurl);
                xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
                
                xhr.onload = function() {
                    button.disabled = false;
                    button.textContent = 'Enable for All Numbers';
                    
                    try {
                        var response = JSON.parse(xhr.responseText);
                        
                        if (response.success) {
                            resultDiv.innerHTML = '<div style="background: #d4edda; border: 1px solid #c3e6cb; padding: 10px; border-radius: 4px; margin-top: 10px;">' +
                                '<strong style="color: #155724;">✅ Success!</strong> Updated ' + response.data.updated_count + ' numbers.</div>';
                            
                            setTimeout(loadPhoneNumbers, 1000);
                        } else {
                            resultDiv.innerHTML = '<div style="background: #f8d7da; border: 1px solid #f5c6cb; padding: 10px; border-radius: 4px; margin-top: 10px;">' +
                                '<strong style="color: #721c24;">❌ Error:</strong> ' + response.error + '</div>';
                        }
                    } catch(e) {
                        resultDiv.innerHTML = '<div style="background: #f8d7da; border: 1px solid #f5c6cb; padding: 10px; border-radius: 4px; margin-top: 10px;">' +
                            '<strong style="color: #721c24;">❌ Error:</strong> Failed to process response</div>';
                    }
                };
                
                xhr.send('action=twp_update_phone_status_callbacks&nonce=' + '<?php echo wp_create_nonce('twp_nonce'); ?>');
            });
            
            // Load numbers on page load
            loadPhoneNumbers();
            
            function copyToClipboard(text) {
                navigator.clipboard.writeText(text).then(function() {
                    alert('Copied to clipboard!');
                });
            }
            
            function loadElevenLabsModels() {
                var select = document.getElementById('elevenlabs-model-select');
                var button = select.nextElementSibling;
                var currentValue = select.value;
                
                button.textContent = 'Loading...';
                button.disabled = true;
                
                var xhr = new XMLHttpRequest();
                xhr.open('POST', ajaxurl);
                xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
                
                xhr.onload = function() {
                    button.textContent = 'Load Available Models';
                    button.disabled = false;
                    
                    try {
                        var response = JSON.parse(xhr.responseText);
                        
                        if (response.success) {
                            var options = '<option value="">Select a model...</option>';
                            
                            response.data.forEach(function(model) {
                                var selected = model.model_id === currentValue ? ' selected' : '';
                                var displayName = model.name || model.model_id;
                                if (model.description) {
                                    displayName += ' - ' + model.description;
                                }
                                options += '<option value="' + model.model_id + '"' + selected + '>' + displayName + '</option>';
                            });
                            
                            select.innerHTML = options;
                        } else {
                            var errorMessage = 'Error loading models: ';
                            if (typeof response.data === 'string') {
                                errorMessage += response.data;
                            } else if (response.data && response.data.detail) {
                                errorMessage += response.data.detail;
                            } else if (response.data && response.data.error) {
                                errorMessage += response.data.error;
                            } else {
                                errorMessage += 'Unknown error occurred';
                            }
                            alert(errorMessage);
                        }
                    } catch (e) {
                        alert('Failed to load models. Please check your API key.');
                    }
                };
                
                xhr.send('action=twp_get_elevenlabs_models&nonce=' + '<?php echo wp_create_nonce('twp_ajax_nonce'); ?>');
            }
            
            function loadElevenLabsVoices() {
                var select = document.getElementById('elevenlabs-voice-select');
                var button = select.nextElementSibling;
                var currentValue = select.getAttribute('data-current') || select.value;
                
                console.log('Loading voices, current value:', currentValue);
                
                button.textContent = 'Loading...';
                button.disabled = true;
                
                var xhr = new XMLHttpRequest();
                xhr.open('POST', ajaxurl);
                xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
                
                xhr.onload = function() {
                    button.textContent = 'Load Voices';
                    button.disabled = false;
                    
                    try {
                        var response = JSON.parse(xhr.responseText);
                        
                        if (response.success) {
                            var options = '<option value="">Select a voice...</option>';
                            
                            response.data.forEach(function(voice) {
                                var selected = voice.voice_id === currentValue ? ' selected' : '';
                                if (selected) {
                                    console.log('Found matching voice:', voice.name, 'ID:', voice.voice_id);
                                }
                                var description = voice.labels ? Object.values(voice.labels).join(', ') : '';
                                var optionText = voice.name + (description ? ' (' + description + ')' : '');
                                options += '<option value="' + voice.voice_id + '"' + selected + '>' + optionText + '</option>';
                            });
                            
                            select.innerHTML = options;
                            
                            // Update the data-current attribute with the selected value
                            if (currentValue) {
                                select.setAttribute('data-current', currentValue);
                            }
                            
                            // Add preview buttons
                            addVoicePreviewButtons(select, response.data);
                        } else {
                            var errorMessage = 'Error loading voices: ';
                            if (typeof response.data === 'string') {
                                errorMessage += response.data;
                            } else if (response.data && response.data.detail) {
                                errorMessage += response.data.detail;
                            } else if (response.data && response.data.error) {
                                errorMessage += response.data.error;
                            } else {
                                errorMessage += 'Unknown error occurred';
                            }
                            alert(errorMessage);
                        }
                    } catch (e) {
                        alert('Failed to load voices. Please check your API key.');
                    }
                };
                
                xhr.send('action=twp_get_elevenlabs_voices&nonce=' + '<?php echo wp_create_nonce('twp_ajax_nonce'); ?>');
            }
            
            function refreshElevenLabsVoices() {
                var select = document.getElementById('elevenlabs-voice-select');
                var button = event.target;
                var currentValue = select.getAttribute('data-current') || select.value;
                
                console.log('Refreshing voices, current value:', currentValue);
                
                button.textContent = 'Refreshing...';
                button.disabled = true;
                
                var xhr = new XMLHttpRequest();
                xhr.open('POST', ajaxurl);
                xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
                
                xhr.onload = function() {
                    button.textContent = '🔄 Refresh';
                    button.disabled = false;
                    
                    try {
                        var response = JSON.parse(xhr.responseText);
                        
                        if (response.success) {
                            var options = '<option value="">Select a voice...</option>';
                            
                            if (Array.isArray(response.data)) {
                                response.data.forEach(function(voice) {
                                    var selected = voice.voice_id === currentValue ? ' selected' : '';
                                    var category = voice.category === 'cloned' ? ' (Cloned)' : (voice.category === 'premade' ? ' (Premade)' : '');
                                    options += '<option value="' + voice.voice_id + '"' + selected + '>' + voice.name + category + '</option>';
                                });
                            }
                            
                            select.innerHTML = options;
                            select.setAttribute('data-current', currentValue);
                            
                            // Re-add preview buttons
                            addVoicePreviewButtons(select, response.data);
                            
                            // Show success message
                            var statusMsg = document.createElement('div');
                            statusMsg.style.color = 'green';
                            statusMsg.style.fontSize = '12px';
                            statusMsg.style.marginTop = '5px';
                            statusMsg.textContent = 'Voices refreshed successfully! Found ' + response.data.length + ' voices.';
                            button.parentNode.appendChild(statusMsg);
                            
                            setTimeout(function() {
                                if (statusMsg.parentNode) {
                                    statusMsg.parentNode.removeChild(statusMsg);
                                }
                            }, 3000);
                            
                        } else {
                            alert('Error refreshing voices: ' + (response.data || 'Unknown error'));
                        }
                    } catch (e) {
                        console.error('Refresh voices error:', e);
                        alert('Failed to refresh voices. Please try again.');
                    }
                };
                
                xhr.send('action=twp_refresh_elevenlabs_voices&nonce=' + '<?php echo wp_create_nonce('twp_ajax_nonce'); ?>');
            }
            
            function addVoicePreviewButtons(select, voices) {
                // Remove existing preview container
                var existingPreview = document.getElementById('voice-preview-container');
                if (existingPreview) {
                    existingPreview.remove();
                }
                
                // Create preview container
                var previewContainer = document.createElement('div');
                previewContainer.id = 'voice-preview-container';
                previewContainer.style.marginTop = '10px';
                previewContainer.innerHTML = '<button type="button" class="button" onclick="previewSelectedVoice()">Preview Voice</button> <span id="preview-status"></span>';
                
                select.parentNode.appendChild(previewContainer);
            }
            
            function previewSelectedVoice() {
                var select = document.getElementById('elevenlabs-voice-select');
                var voiceId = select.value;
                var statusSpan = document.getElementById('preview-status');
                
                if (!voiceId) {
                    alert('Please select a voice first.');
                    return;
                }
                
                statusSpan.textContent = 'Generating preview...';
                
                var xhr = new XMLHttpRequest();
                xhr.open('POST', ajaxurl);
                xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
                
                xhr.onload = function() {
                    try {
                        var response = JSON.parse(xhr.responseText);
                        
                        if (response.success) {
                            statusSpan.innerHTML = '<audio controls><source src="' + response.data.audio_url + '" type="audio/mpeg">Your browser does not support the audio element.</audio>';
                        } else {
                            statusSpan.textContent = 'Error: ' + response.data;
                        }
                    } catch (e) {
                        statusSpan.textContent = 'Failed to generate preview.';
                    }
                };
                
                xhr.send('action=twp_preview_voice&voice_id=' + voiceId + '&nonce=' + '<?php echo wp_create_nonce('twp_ajax_nonce'); ?>');
            }
            
            function loadTwilioNumbers(selectId) {
                var select = document.getElementById(selectId);
                var button = event.target;
                var currentValue = select.value;
                
                button.textContent = 'Loading...';
                button.disabled = true;
                
                var xhr = new XMLHttpRequest();
                xhr.open('POST', ajaxurl);
                xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
                
                xhr.onload = function() {
                    button.textContent = 'Refresh Numbers';
                    button.disabled = false;
                    
                    try {
                        var response = JSON.parse(xhr.responseText);
                        
                        if (response.success) {
                            var options = '<option value="">Select a Twilio number...</option>';
                            
                            if (Array.isArray(response.data)) {
                                response.data.forEach(function(number) {
                                    var phone = number.phone_number || '';
                                    var friendlyName = number.friendly_name || phone;
                                    if (phone) {
                                        var selected = phone === currentValue ? ' selected' : '';
                                        options += '<option value="' + phone + '"' + selected + '>' + friendlyName + ' (' + phone + ')' + '</option>';
                                    }
                                });
                            }
                            
                            select.innerHTML = options;
                        } else {
                            alert('Error loading Twilio numbers: ' + (response.data || 'Unknown error'));
                        }
                    } catch (e) {
                        alert('Failed to load Twilio numbers. Please check your Twilio credentials.');
                    }
                };
                
                xhr.send('action=twp_get_phone_numbers&nonce=' + '<?php echo wp_create_nonce('twp_ajax_nonce'); ?>');
            }
            
            // Auto-load voices if API key exists
            document.addEventListener('DOMContentLoaded', function() {
                var apiKeyField = document.querySelector('[name="twp_elevenlabs_api_key"]');
                var voiceSelect = document.getElementById('elevenlabs-voice-select');
                
                // Add change listener to maintain selection
                if (voiceSelect) {
                    voiceSelect.addEventListener('change', function() {
                        this.setAttribute('data-current', this.value);
                        console.log('Voice selection changed to:', this.value);
                    });
                }
                
                if (apiKeyField && apiKeyField.value && voiceSelect) {
                    loadElevenLabsVoices();
                }
            });
            
            // Auto-configure TwiML App functionality
            document.addEventListener('DOMContentLoaded', function() {
                var autoConfigBtn = document.getElementById('auto-configure-btn');
                var configureNumbersBtn = document.getElementById('configure-numbers-btn');
                var resultDiv = document.getElementById('auto-configure-result');
                var smartRoutingCheckbox = document.getElementById('enable-smart-routing');
                var phoneNumbersDiv = document.getElementById('phone-numbers-selection');
                
                // Load phone numbers for selection
                function loadPhoneNumbersForSelection() {
                    var xhr = new XMLHttpRequest();
                    xhr.open('POST', ajaxurl);
                    xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
                    
                    xhr.onload = function() {
                        try {
                            var response = JSON.parse(xhr.responseText);
                            console.log('Phone numbers response:', response);
                            if (response.success && response.data) {
                                var numbers = response.data; // The data is the array directly
                                if (numbers.length === 0) {
                                    phoneNumbersDiv.innerHTML = '<p style="color: #666;">No phone numbers found in your Twilio account.</p>';
                                    return;
                                }
                                
                                var html = '<div style="max-height: 200px; overflow-y: auto; border: 1px solid #ddd; padding: 10px; border-radius: 4px;">';
                                numbers.forEach(function(number) {
                                    html += '<label style="display: block; padding: 5px 0;">';
                                    html += '<input type="checkbox" class="phone-number-checkbox" value="' + number.sid + '" data-number="' + number.phone_number + '" checked> ';
                                    html += '<strong>' + number.phone_number + '</strong>';
                                    if (number.friendly_name && number.friendly_name !== number.phone_number) {
                                        html += ' - ' + number.friendly_name;
                                    }
                                    if (number.voice_url) {
                                        html += '<br><small style="margin-left: 25px; color: #666;">Current: ' + number.voice_url.replace(/^https?:\/\/[^\/]+/, '') + '</small>';
                                    }
                                    html += '</label>';
                                });
                                html += '</div>';
                                phoneNumbersDiv.innerHTML = html;
                            } else {
                                phoneNumbersDiv.innerHTML = '<p style="color: #dc3545;">Failed to load phone numbers</p>';
                            }
                        } catch(e) {
                            console.error('Error parsing phone numbers response:', e, xhr.responseText);
                            phoneNumbersDiv.innerHTML = '<p style="color: #dc3545;">Error loading phone numbers: ' + e.message + '</p>';
                        }
                    };
                    
                    xhr.onerror = function() {
                        phoneNumbersDiv.innerHTML = '<p style="color: #dc3545;">Network error loading phone numbers</p>';
                    };
                    
                    xhr.send('action=twp_get_phone_numbers&nonce=' + '<?php echo wp_create_nonce('twp_ajax_nonce'); ?>');
                }
                
                // Load phone numbers on page load
                loadPhoneNumbersForSelection();
                
                // Select/Deselect all buttons
                var selectAllBtn = document.getElementById('select-all-numbers');
                var deselectAllBtn = document.getElementById('deselect-all-numbers');
                
                if (selectAllBtn) {
                    selectAllBtn.addEventListener('click', function() {
                        document.querySelectorAll('.phone-number-checkbox').forEach(function(cb) {
                            cb.checked = true;
                        });
                    });
                }
                
                if (deselectAllBtn) {
                    deselectAllBtn.addEventListener('click', function() {
                        document.querySelectorAll('.phone-number-checkbox').forEach(function(cb) {
                            cb.checked = false;
                        });
                    });
                }
                
                function performConfiguration(action, buttonText, loadingText) {
                    return function() {
                        var button = this;
                        var originalText = button.textContent;
                        
                        // Get selected phone numbers
                        var selectedNumbers = [];
                        document.querySelectorAll('.phone-number-checkbox:checked').forEach(function(cb) {
                            selectedNumbers.push({
                                sid: cb.value,
                                number: cb.dataset.number
                            });
                        });
                        
                        if (selectedNumbers.length === 0) {
                            alert('Please select at least one phone number to configure.');
                            return;
                        }
                        
                        button.disabled = true;
                        button.textContent = loadingText;
                        
                        var actionType = action === 'twp_auto_configure_twiml_app' ? 'full' : 'numbers only';
                        resultDiv.innerHTML = '<div style="background: #fff3cd; border: 1px solid #ffeaa7; padding: 10px; border-radius: 4px;">Setting up ' + actionType + ' configuration for ' + selectedNumbers.length + ' number(s)...</div>';
                        
                        var xhr = new XMLHttpRequest();
                        xhr.open('POST', ajaxurl);
                        xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
                        
                        xhr.onload = function() {
                            button.disabled = false;
                            button.textContent = originalText;
                            
                            try {
                                var response = JSON.parse(xhr.responseText);
                                var html;
                                
                                if (response.success) {
                                    var data = response.data;
                                    html = '<div style="background: #d4edda; border: 1px solid #c3e6cb; padding: 15px; border-radius: 4px;">';
                                    html += '<h4 style="color: #155724; margin-top: 0;">✅ Configuration Successful!</h4>';
                                    
                                    if (data.steps_completed && data.steps_completed.length > 0) {
                                        html += '<h5>Steps Completed:</h5><ul>';
                                        data.steps_completed.forEach(function(step) {
                                            html += '<li style="color: #155724;">' + step + '</li>';
                                        });
                                        html += '</ul>';
                                    }
                                    
                                    if (data.warnings && data.warnings.length > 0) {
                                        html += '<h5>Warnings:</h5><ul>';
                                        data.warnings.forEach(function(warning) {
                                            html += '<li style="color: #856404;">' + warning + '</li>';
                                        });
                                        html += '</ul>';
                                    }
                                    
                                    if (data.app_sid) {
                                        html += '<p><strong>TwiML App SID:</strong> <code>' + data.app_sid + '</code></p>';
                                    }
                                    if (data.voice_url) {
                                        html += '<p><strong>Voice URL:</strong> <code>' + data.voice_url + '</code></p>';
                                    }
                                    if (data.webhook_url) {
                                        html += '<p><strong>Webhook URL:</strong> <code>' + data.webhook_url + '</code></p>';
                                    }
                                    if (data.routing_type) {
                                        html += '<p><strong>Routing Type:</strong> ' + data.routing_type + '</p>';
                                    }
                                    
                                    var successMessage = action === 'twp_auto_configure_twiml_app' ? 
                                        '🎉 Your browser phone is now ready! Go to <strong>Twilio WP Plugin → Browser Phone</strong> to start making calls.' :
                                        '📞 Phone numbers configured successfully!';
                                    html += '<p style="margin-bottom: 0;">' + successMessage + '</p>';
                                    html += '</div>';
                                    
                                    // Update the TwiML App SID field if it exists
                                    if (data.app_sid) {
                                        var appSidField = document.querySelector('input[name="twp_twiml_app_sid"]');
                                        if (appSidField) {
                                            appSidField.value = data.app_sid;
                                        }
                                    }
                                    
                                } else {
                                    html = '<div style="background: #f8d7da; border: 1px solid #f5c6cb; padding: 15px; border-radius: 4px;">';
                                    html += '<h4 style="color: #721c24; margin-top: 0;">❌ Configuration Failed</h4>';
                                    html += '<p style="color: #721c24; margin-bottom: 0;">' + response.data + '</p>';
                                    html += '</div>';
                                }
                                
                                resultDiv.innerHTML = html;
                                
                            } catch(e) {
                                resultDiv.innerHTML = '<div style="background: #f8d7da; border: 1px solid #f5c6cb; padding: 15px; border-radius: 4px;">' +
                                    '<h4 style="color: #721c24; margin-top: 0;">❌ Error</h4>' +
                                    '<p style="color: #721c24; margin-bottom: 0;">Failed to parse response: ' + e.message + '</p></div>';
                            }
                        };
                        
                        xhr.onerror = function() {
                            button.disabled = false;
                            button.textContent = originalText;
                            resultDiv.innerHTML = '<div style="background: #f8d7da; border: 1px solid #f5c6cb; padding: 15px; border-radius: 4px;">' +
                                '<h4 style="color: #721c24; margin-top: 0;">❌ Network Error</h4>' +
                                '<p style="color: #721c24; margin-bottom: 0;">Failed to connect to server. Please try again.</p></div>';
                        };
                        
                        var enableSmartRouting = smartRoutingCheckbox ? smartRoutingCheckbox.checked : true;
                        var params = 'action=' + action + '&nonce=' + '<?php echo wp_create_nonce('twp_ajax_nonce'); ?>' + 
                            '&enable_smart_routing=' + enableSmartRouting +
                            '&selected_numbers=' + encodeURIComponent(JSON.stringify(selectedNumbers));
                        xhr.send(params);
                    };
                }
                
                if (autoConfigBtn) {
                    autoConfigBtn.addEventListener('click', performConfiguration(
                        'twp_auto_configure_twiml_app', 
                        '🔧 Auto-Configure Browser Phone',
                        '⏳ Configuring...'
                    ));
                }
                
                if (configureNumbersBtn) {
                    configureNumbersBtn.addEventListener('click', performConfiguration(
                        'twp_configure_phone_numbers_only',
                        '📞 Configure Phone Numbers Only',
                        '⏳ Configuring Numbers...'
                    ));
                }
            });
            </script>
        </div>
        <?php
    }
    
    /**
     * Display schedules page
     */
    public function display_schedules_page() {
        // Ensure database tables exist
        TWP_Activator::ensure_tables_exist();
        ?>
        <div class="wrap">
            <h1>Business Hours Schedules</h1>
            <p>Define business hours that determine when different workflows are active. Schedules automatically switch between workflows based on time and day.</p>
            <button class="button button-primary" onclick="openScheduleModal()">Add New Schedule</button>
            
            <table class="wp-list-table widefat fixed striped" style="margin-top: 20px;">
                <thead>
                    <tr>
                        <th>Schedule Name</th>
                        <th>Days</th>
                        <th>Business Hours</th>
                        <th>Holidays</th>
                        <th>Workflow</th>
                        <th>Status</th>
                        <th>Actions</th>
                    </tr>
                </thead>
                <tbody>
                    <?php
                    $schedules = TWP_Scheduler::get_schedules();
                    foreach ($schedules as $schedule) {
                        ?>
                        <tr>
                            <td><?php echo esc_html($schedule->schedule_name); ?></td>
                            <td><?php echo esc_html(ucwords(str_replace(',', ', ', $schedule->days_of_week))); ?></td>
                            <td><?php echo esc_html($schedule->start_time . ' - ' . $schedule->end_time); ?></td>
                            <td>
                                <?php
                                if (!empty($schedule->holiday_dates)) {
                                    $holidays = array_map('trim', explode(',', $schedule->holiday_dates));
                                    echo esc_html(count($holidays) . ' date' . (count($holidays) > 1 ? 's' : '') . ' set');
                                } else {
                                    echo '<em>None</em>';
                                }
                                ?>
                            </td>
                            <td>
                                <?php
                                if ($schedule->workflow_id) {
                                    $workflow = TWP_Workflow::get_workflow($schedule->workflow_id);
                                    echo $workflow ? esc_html($workflow->workflow_name) : 'Workflow #' . $schedule->workflow_id;
                                } else {
                                    echo '<em>No specific workflow</em>';
                                }
                                ?>
                            </td>
                            <td>
                                <span class="twp-status <?php echo $schedule->is_active ? 'active' : 'inactive'; ?>">
                                    <?php echo $schedule->is_active ? 'Active' : 'Inactive'; ?>
                                </span>
                            </td>
                            <td>
                                <button class="button" onclick="editSchedule(<?php echo $schedule->id; ?>)">Edit</button>
                                <button class="button" onclick="deleteSchedule(<?php echo $schedule->id; ?>)">Delete</button>
                            </td>
                        </tr>
                        <?php
                    }
                    if (empty($schedules)) {
                        echo '<tr><td colspan="7">No schedules found. <a href="#" onclick="openScheduleModal()">Create your first schedule</a>.</td></tr>';
                    }
                    ?>
                </tbody>
            </table>
        </div>
        
        <!-- Schedule Modal -->
        <div id="schedule-modal" class="twp-modal" style="display: none;">
            <div class="twp-modal-content">
                <h2 id="schedule-modal-title">Add New Schedule</h2>
                <form id="schedule-form">
                    <input type="hidden" id="schedule-id" name="schedule_id" value="">
                    
                    <div class="form-field">
                        <label for="schedule-name">Schedule Name:</label>
                        <input type="text" id="schedule-name" name="schedule_name" required placeholder="e.g., Business Hours, Weekend Schedule">
                        <p class="description">Give this schedule a descriptive name</p>
                    </div>
                    
                    <div class="form-field">
                        <label for="days-of-week">Days of Week:</label>
                        <div class="days-checkboxes">
                            <label><input type="checkbox" name="days_of_week[]" value="monday"> Monday</label>
                            <label><input type="checkbox" name="days_of_week[]" value="tuesday"> Tuesday</label>
                            <label><input type="checkbox" name="days_of_week[]" value="wednesday"> Wednesday</label>
                            <label><input type="checkbox" name="days_of_week[]" value="thursday"> Thursday</label>
                            <label><input type="checkbox" name="days_of_week[]" value="friday"> Friday</label>
                            <label><input type="checkbox" name="days_of_week[]" value="saturday"> Saturday</label>
                            <label><input type="checkbox" name="days_of_week[]" value="sunday"> Sunday</label>
                        </div>
                        <p class="description">Select the days when this schedule should be active</p>
                    </div>
                    
                    <div class="form-field">
                        <label for="start-time">Business Hours Start:</label>
                        <input type="time" id="start-time" name="start_time" required>
                    </div>
                    
                    <div class="form-field">
                        <label for="end-time">Business Hours End:</label>
                        <input type="time" id="end-time" name="end_time" required>
                    </div>
                    
                    <div class="form-field">
                        <label for="business-hours-workflow">Business Hours Workflow (Optional):</label>
                        <select id="business-hours-workflow" name="workflow_id">
                            <option value="">No specific workflow</option>
                            <?php
                            $workflows = TWP_Workflow::get_workflows();
                            if ($workflows && is_array($workflows)) {
                                foreach ($workflows as $workflow) {
                                    echo '<option value="' . $workflow->id . '">' . esc_html($workflow->workflow_name) . '</option>';
                                }
                            } else {
                                echo '<option value="" disabled>No workflows found - create a workflow first</option>';
                            }
                            ?>
                        </select>
                        <p class="description">This workflow will handle calls during business hours</p>
                    </div>
                    
                    <div class="form-field">
                        <label for="after-hours-action">After Hours Action:</label>
                        <select id="after-hours-action" name="after_hours_action" onchange="toggleAfterHoursFields(this)">
                            <option value="default">Use Default Workflow</option>
                            <option value="forward">Forward to Number</option>
                            <option value="workflow">Use Different Workflow</option>
                        </select>
                    </div>
                    
                    <div id="after-hours-forward" class="form-field" style="display: none;">
                        <label for="forward-number">Forward Number:</label>
                        <input type="text" id="forward-number" name="forward_number" placeholder="+1234567890">
                        <p class="description">Calls will be forwarded to this number after hours</p>
                    </div>
                    
                    <div id="after-hours-workflow" class="form-field" style="display: none;">
                        <label for="after-hours-workflow-select">After Hours Workflow:</label>
                        <select id="after-hours-workflow-select" name="after_hours_workflow_id">
                            <option value="">Select a workflow...</option>
                            <?php
                            if ($workflows && is_array($workflows)) {
                                foreach ($workflows as $workflow) {
                                    echo '<option value="' . $workflow->id . '">' . esc_html($workflow->workflow_name) . '</option>';
                                }
                            }
                            ?>
                        </select>
                        <p class="description">This workflow will handle calls outside business hours</p>
                    </div>
                    
                    <div class="form-field">
                        <label for="holiday-dates">Holiday Dates (Optional):</label>
                        <textarea id="holiday-dates" name="holiday_dates" rows="3" placeholder="2025-12-25, 2025-01-01, 2025-07-04"></textarea>
                        <p class="description">Enter dates (YYYY-MM-DD format) when this schedule should be inactive, separated by commas. These days will be treated as "after hours" regardless of time.</p>
                    </div>
                    
                    <div class="form-field">
                        <label>
                            <input type="checkbox" name="is_active" checked> Active
                        </label>
                        <p class="description">Uncheck to temporarily disable this schedule</p>
                    </div>
                    
                    <div class="modal-buttons">
                        <button type="submit" class="button button-primary">Save Schedule</button>
                        <button type="button" class="button" onclick="closeScheduleModal()">Cancel</button>
                    </div>
                </form>
            </div>
        </div>
        <?php
    }
    
    /**
     * Display workflows page
     */
    public function display_workflows_page() {
        ?>
        <div class="wrap">
            <h1>Call Workflows</h1>
            <button class="button button-primary" onclick="openWorkflowBuilder()">Create New Workflow</button>
            
            <table class="wp-list-table widefat fixed striped" style="margin-top: 20px;">
                <thead>
                    <tr>
                        <th>Workflow Name</th>
                        <th>Phone Number</th>
                        <th>Steps</th>
                        <th>Status</th>
                        <th>Actions</th>
                    </tr>
                </thead>
                <tbody>
                    <?php
                    $workflows = TWP_Workflow::get_workflows();
                    foreach ($workflows as $workflow) {
                        $workflow_data = json_decode($workflow->workflow_data, true);
                        $step_count = isset($workflow_data['steps']) ? count($workflow_data['steps']) : 0;
                        
                        // Get phone numbers for this workflow
                        $phone_numbers = TWP_Workflow::get_workflow_phone_numbers($workflow->id);
                        $phone_display = !empty($phone_numbers) ? implode(', ', $phone_numbers) : $workflow->phone_number;
                        ?>
                        <tr>
                            <td><?php echo esc_html($workflow->workflow_name); ?></td>
                            <td><?php echo esc_html($phone_display); ?></td>
                            <td><?php echo $step_count; ?> steps</td>
                            <td>
                                <span class="twp-status <?php echo $workflow->is_active ? 'active' : 'inactive'; ?>">
                                    <?php echo $workflow->is_active ? 'Active' : 'Inactive'; ?>
                                </span>
                            </td>
                            <td>
                                <button class="button" onclick="editWorkflow(<?php echo $workflow->id; ?>)">Edit</button>
                                <button class="button" onclick="deleteWorkflow(<?php echo $workflow->id; ?>)">Delete</button>
                            </td>
                        </tr>
                        <?php
                    }
                    ?>
                </tbody>
            </table>
        </div>
        
        <!-- Workflow Builder Modal -->
        <div id="workflow-builder" class="twp-modal" style="display: none;">
            <div class="twp-modal-content large">
                <h2 id="workflow-modal-title">Create New Workflow</h2>
                
                <form id="workflow-basic-info">
                    <div class="workflow-info-grid">
                        <div>
                            <label>Workflow Name:</label>
                            <input type="text" id="workflow-name" name="workflow_name" required>
                        </div>
                        <div>
                            <label>Phone Numbers:</label>
                            <div id="workflow-phone-numbers">
                                <div class="phone-number-row">
                                    <select name="phone_numbers[]" class="workflow-phone-select" required>
                                        <option value="">Select a phone number...</option>
                                        <!-- Will be populated via AJAX -->
                                    </select>
                                    <button type="button" class="button add-phone-number" style="margin-left: 10px;">Add Number</button>
                                </div>
                            </div>
                            <p class="description">You can assign multiple phone numbers to this workflow. All selected numbers will trigger this workflow when called.</p>
                        </div>
                        <div>
                            <label>
                                <input type="checkbox" id="workflow-active" name="is_active" checked> Active
                            </label>
                        </div>
                    </div>
                </form>
                
                <div class="workflow-builder-container">
                    <div class="workflow-steps">
                        <h3>Workflow Steps</h3>
                        <div class="step-types-toolbar">
                            <button type="button" class="button step-btn" data-step-type="greeting">
                                <span class="dashicons dashicons-megaphone"></span> Greeting
                            </button>
                            <button type="button" class="button step-btn" data-step-type="ivr_menu">
                                <span class="dashicons dashicons-menu"></span> IVR Menu
                            </button>
                            <button type="button" class="button step-btn" data-step-type="forward">
                                <span class="dashicons dashicons-phone"></span> Forward
                            </button>
                            <button type="button" class="button step-btn" data-step-type="queue">
                                <span class="dashicons dashicons-groups"></span> Queue
                            </button>
                            <button type="button" class="button step-btn" data-step-type="voicemail">
                                <span class="dashicons dashicons-microphone"></span> Voicemail
                            </button>
                            <button type="button" class="button step-btn" data-step-type="schedule_check">
                                <span class="dashicons dashicons-clock"></span> Schedule
                            </button>
                            <button type="button" class="button step-btn" data-step-type="sms">
                                <span class="dashicons dashicons-email-alt"></span> SMS
                            </button>
                        </div>
                        
                        <div id="workflow-steps-list" class="workflow-steps-container">
                            <!-- Steps will be added here -->
                        </div>
                    </div>
                    
                    <div class="workflow-preview">
                        <h3>Call Flow Preview</h3>
                        <div id="workflow-preview-content" class="workflow-flow-chart">
                            <div class="flow-start">📞 Incoming Call</div>
                            <div id="flow-steps"></div>
                        </div>
                    </div>
                </div>
                
                <div class="modal-buttons">
                    <button type="button" class="button button-primary" id="save-workflow-btn">Save Workflow</button>
                    <button type="button" class="button" onclick="closeWorkflowBuilder()">Cancel</button>
                </div>
            </div>
        </div>
        
        <!-- Step Configuration Modal -->
        <div id="step-config-modal" class="twp-modal" style="display: none;">
            <div class="twp-modal-content">
                <h2 id="step-config-title">Configure Step</h2>
                <form id="step-config-form">
                    <input type="hidden" id="step-id" name="step_id">
                    <input type="hidden" id="step-type" name="step_type">
                    
                    <div id="step-config-content">
                        <!-- Dynamic content based on step type -->
                    </div>
                    
                    <div class="modal-buttons">
                        <button type="button" class="button button-primary" id="save-step-btn">Save Step</button>
                        <button type="button" class="button" onclick="closeStepConfigModal()">Cancel</button>
                    </div>
                </form>
            </div>
        </div>
        <?php
    }
    
    /**
     * Display queues page
     */
    public function display_queues_page() {
        ?>
        <div class="wrap">
            <h1>Call Queues</h1>
            <button class="button button-primary" onclick="openQueueModal()">Create New Queue</button>
            
            <div class="twp-queue-grid" style="margin-top: 20px;">
                <?php
                global $wpdb;
                $queue_table = $wpdb->prefix . 'twp_call_queues';
                $queues = $wpdb->get_results("SELECT * FROM $queue_table");
                
                foreach ($queues as $queue) {
                    $queue_status = TWP_Call_Queue::get_queue_status();
                    $waiting_calls = 0;
                    
                    foreach ($queue_status as $status) {
                        if ($status['queue_id'] == $queue->id) {
                            $waiting_calls = $status['waiting_calls'];
                            break;
                        }
                    }
                    ?>
                    <div class="twp-queue-card">
                        <h3><?php echo esc_html($queue->queue_name); ?></h3>
                        <div class="queue-stats">
                            <div class="stat">
                                <span class="label">Notification Number:</span>
                                <span class="value"><?php echo esc_html($queue->notification_number ?: 'Not set'); ?></span>
                            </div>
                            <?php 
                            // Get agent group name
                            $group_name = 'None';
                            if (!empty($queue->agent_group_id)) {
                                $groups_table = $wpdb->prefix . 'twp_agent_groups';
                                $group = $wpdb->get_row($wpdb->prepare("SELECT group_name FROM $groups_table WHERE id = %d", $queue->agent_group_id));
                                if ($group) {
                                    $group_name = $group->group_name;
                                }
                            }
                            ?>
                            <div class="stat">
                                <span class="label">Agent Group:</span>
                                <span class="value"><?php echo esc_html($group_name); ?></span>
                            </div>
                            <div class="stat">
                                <span class="label">Waiting:</span>
                                <span class="value"><?php echo $waiting_calls; ?></span>
                            </div>
                            <div class="stat">
                                <span class="label">Max Size:</span>
                                <span class="value"><?php echo $queue->max_size; ?></span>
                            </div>
                            <div class="stat">
                                <span class="label">Timeout:</span>
                                <span class="value"><?php echo $queue->timeout_seconds; ?>s</span>
                            </div>
                        </div>
                        <div class="queue-actions">
                            <button class="button" onclick="viewQueueDetails(<?php echo $queue->id; ?>)">View Details</button>
                            <button class="button" onclick="editQueue(<?php echo $queue->id; ?>)">Edit</button>
                            <button class="button button-link-delete" onclick="deleteQueue(<?php echo $queue->id; ?>)" style="color: #dc3232;">Delete</button>
                        </div>
                    </div>
                    <?php
                }
                ?>
            </div>
        </div>
        
        <!-- Queue Modal -->
        <div id="queue-modal" class="twp-modal" style="display: none;">
            <div class="twp-modal-content">
                <h2>Create/Edit Queue</h2>
                <form id="queue-form">
                    <input type="hidden" id="queue-id" name="queue_id" value="">
                    
                    <label>Queue Name:</label>
                    <input type="text" name="queue_name" required>
                    
                    <label>SMS Notification Number:</label>
                    <select name="notification_number" id="queue-notification-number" class="regular-text">
                        <option value="">Select a Twilio number...</option>
                        <?php
                        try {
                            // Get Twilio phone numbers
                            $twilio = new TWP_Twilio_API();
                            $numbers_result = $twilio->get_phone_numbers();
                            
                            if ($numbers_result['success'] && isset($numbers_result['data']['incoming_phone_numbers'])) {
                                $numbers = $numbers_result['data']['incoming_phone_numbers'];
                                if (is_array($numbers) && !empty($numbers)) {
                                    foreach ($numbers as $number) {
                                        $phone = isset($number['phone_number']) ? $number['phone_number'] : '';
                                        $friendly_name = isset($number['friendly_name']) ? $number['friendly_name'] : $phone;
                                        if (!empty($phone)) {
                                            echo '<option value="' . esc_attr($phone) . '">' . esc_html($friendly_name . ' (' . $phone . ')') . '</option>';
                                        }
                                    }
                                }
                            }
                        } catch (Exception $e) {
                            echo '<option value="">Error loading numbers</option>';
                        }
                        ?>
                    </select>
                    <button type="button" onclick="loadTwilioNumbers('queue-phone-number')" class="button" style="margin-left: 10px;">Refresh Numbers</button>
                    <p class="description">Phone number that this queue is associated with (used for agent caller ID)</p>
                    
                    <label>Agent Group:</label>
                    <select name="agent_group_id" id="queue-agent-group" class="regular-text">
                        <option value="">Select an agent group...</option>
                        <?php
                        // Get agent groups
                        global $wpdb;
                        $groups_table = $wpdb->prefix . 'twp_agent_groups';
                        $groups = $wpdb->get_results("SELECT * FROM $groups_table ORDER BY group_name");
                        
                        foreach ($groups as $group) {
                            echo '<option value="' . esc_attr($group->id) . '">' . esc_html($group->group_name) . '</option>';
                        }
                        ?>
                    </select>
                    <p class="description">Agent group that will handle calls from this queue</p>
                    
                    <label>Max Size:</label>
                    <input type="number" name="max_size" min="1" max="100" value="10">
                    
                    <label>Timeout (seconds):</label>
                    <input type="number" name="timeout_seconds" min="30" max="3600" value="300">
                    
                    <label>Wait Music URL:</label>
                    <input type="url" name="wait_music_url">
                    
                    <label>TTS Welcome Message:</label>
                    <textarea name="tts_message" rows="3"></textarea>
                    
                    <div class="modal-buttons">
                        <button type="submit" class="button button-primary">Save</button>
                        <button type="button" class="button" onclick="closeQueueModal()">Cancel</button>
                    </div>
                </form>
            </div>
        </div>
        <?php
    }
    
    /**
     * Display phone numbers page
     */
    public function display_numbers_page() {
        ?>
        <div class="wrap">
            <h1>Phone Numbers</h1>
            
            <div class="twp-numbers-actions">
                <button class="button button-primary" onclick="searchAvailableNumbers()">Buy New Number</button>
                <button class="button" onclick="refreshNumbers()">Refresh</button>
            </div>
            
            <h2>Your Twilio Phone Numbers</h2>
            <div id="twp-numbers-list">
                <div class="twp-spinner"></div>
                <p>Loading phone numbers...</p>
            </div>
            
            <h2>Available Numbers for Purchase</h2>
            <div id="twp-available-numbers" style="display: none;">
                <div class="twp-search-form">
                    <label>Country:</label>
                    <select id="country-code">
                        <option value="US">United States</option>
                        <option value="CA">Canada</option>
                        <option value="GB">United Kingdom</option>
                        <option value="AU">Australia</option>
                    </select>
                    
                    <label>Area Code:</label>
                    <input type="text" id="area-code" placeholder="Optional">
                    
                    <label>Contains:</label>
                    <input type="text" id="contains" placeholder="Optional">
                    
                    <button class="button" onclick="searchNumbers()">Search</button>
                </div>
                
                <div id="search-results"></div>
            </div>
        </div>
        
        <!-- Number Configuration Modal -->
        <div id="number-config-modal" class="twp-modal" style="display: none;">
            <div class="twp-modal-content">
                <h2>Configure Phone Number</h2>
                <form id="number-config-form">
                    <input type="hidden" id="number-sid" name="number_sid" value="">
                    
                    <label>Phone Number:</label>
                    <input type="text" id="phone-number" readonly>
                    
                    <label>Voice URL:</label>
                    <select name="voice_url">
                        <option value="">Select a workflow or schedule...</option>
                        <optgroup label="Workflows">
                            <?php
                            $workflows = TWP_Workflow::get_workflows();
                            foreach ($workflows as $workflow) {
                                $webhook_url = rest_url('twilio-webhook/v1/voice');
                                $webhook_url = add_query_arg('workflow_id', $workflow->id, $webhook_url);
                                echo '<option value="' . esc_url($webhook_url) . '">' . esc_html($workflow->workflow_name) . '</option>';
                            }
                            ?>
                        </optgroup>
                        <optgroup label="Schedules">
                            <?php
                            $schedules = TWP_Scheduler::get_schedules();
                            foreach ($schedules as $schedule) {
                                $webhook_url = rest_url('twilio-webhook/v1/voice');
                                $webhook_url = add_query_arg('schedule_id', $schedule->id, $webhook_url);
                                echo '<option value="' . esc_url($webhook_url) . '">' . esc_html($schedule->schedule_name) . '</option>';
                            }
                            ?>
                        </optgroup>
                    </select>
                    
                    <label>SMS URL:</label>
                    <input type="url" name="sms_url" value="<?php echo rest_url('twilio-webhook/v1/sms'); ?>">
                    
                    <div class="modal-buttons">
                        <button type="submit" class="button button-primary">Save</button>
                        <button type="button" class="button" onclick="closeNumberConfigModal()">Cancel</button>
                    </div>
                </form>
            </div>
        </div>
        <?php
    }
    
    /**
     * Display voicemails page
     */
    public function display_voicemails_page() {
        // Get the active tab
        $active_tab = isset($_GET['tab']) ? sanitize_text_field($_GET['tab']) : 'voicemails';
        ?>
        <div class="wrap">
            <h1>Voicemails & Recordings</h1>
            
            <h2 class="nav-tab-wrapper">
                <a href="?page=twilio-wp-voicemails&tab=voicemails" class="nav-tab <?php echo $active_tab == 'voicemails' ? 'nav-tab-active' : ''; ?>">Voicemails</a>
                <a href="?page=twilio-wp-voicemails&tab=recordings" class="nav-tab <?php echo $active_tab == 'recordings' ? 'nav-tab-active' : ''; ?>">Call Recordings</a>
            </h2>
            
            <?php if ($active_tab == 'voicemails'): ?>
            <div class="twp-voicemail-filters">
                <label>Filter by workflow:</label>
                <select id="voicemail-workflow-filter">
                    <option value="">All workflows</option>
                    <?php
                    $workflows = TWP_Workflow::get_workflows();
                    foreach ($workflows as $workflow) {
                        echo '<option value="' . $workflow->id . '">' . esc_html($workflow->workflow_name) . '</option>';
                    }
                    ?>
                </select>
                
                <label>Date range:</label>
                <input type="date" id="voicemail-date-from" />
                <input type="date" id="voicemail-date-to" />
                
                <button class="button" onclick="filterVoicemails()">Filter</button>
                <button class="button" onclick="exportVoicemails()">Export</button>
            </div>
            
            <div class="twp-voicemail-stats">
                <div class="stat-card">
                    <h3>Total Voicemails</h3>
                    <div class="stat-value" id="total-voicemails">
                        <?php
                        global $wpdb;
                        $table = $wpdb->prefix . 'twp_voicemails';
                        echo $wpdb->get_var("SELECT COUNT(*) FROM $table");
                        ?>
                    </div>
                </div>
                
                <div class="stat-card">
                    <h3>Today</h3>
                    <div class="stat-value" id="today-voicemails">
                        <?php
                        echo $wpdb->get_var("SELECT COUNT(*) FROM $table WHERE DATE(created_at) = CURDATE()");
                        ?>
                    </div>
                </div>
                
                <div class="stat-card">
                    <h3>This Week</h3>
                    <div class="stat-value" id="week-voicemails">
                        <?php
                        echo $wpdb->get_var("SELECT COUNT(*) FROM $table WHERE YEARWEEK(created_at) = YEARWEEK(NOW())");
                        ?>
                    </div>
                </div>
            </div>
            
            <table class="wp-list-table widefat fixed striped" id="voicemails-table">
                <thead>
                    <tr>
                        <th>Date/Time</th>
                        <th>From Number</th>
                        <th>Workflow</th>
                        <th>Duration</th>
                        <th>Transcription</th>
                        <th>Recording</th>
                        <th>Actions</th>
                    </tr>
                </thead>
                <tbody>
                    <?php $this->display_voicemails_table(); ?>
                </tbody>
            </table>
        </div>
        
        <!-- Voicemail Player Modal -->
        <div id="voicemail-player-modal" class="twp-modal" style="display: none;">
            <div class="twp-modal-content">
                <h2 id="voicemail-modal-title">Voicemail Player</h2>
                
                <div class="voicemail-details">
                    <div class="detail-row">
                        <span class="label">From:</span>
                        <span id="voicemail-from"></span>
                    </div>
                    <div class="detail-row">
                        <span class="label">Date:</span>
                        <span id="voicemail-date"></span>
                    </div>
                    <div class="detail-row">
                        <span class="label">Duration:</span>
                        <span id="voicemail-duration"></span>
                    </div>
                </div>
                
                <div class="voicemail-player">
                    <audio id="voicemail-audio" controls style="width: 100%; margin: 20px 0;">
                        Your browser does not support the audio element.
                    </audio>
                </div>
                
                <div class="voicemail-transcription">
                    <h4>Transcription:</h4>
                    <div id="voicemail-transcription-text">
                        <em>No transcription available</em>
                    </div>
                    <button class="button" onclick="transcribeVoicemail()" id="transcribe-btn">Generate Transcription</button>
                </div>
                
                <div class="voicemail-actions">
                    <button class="button" onclick="downloadVoicemail()">Download</button>
                    <button class="button button-danger" onclick="deleteVoicemail()">Delete</button>
                    <button class="button" onclick="closeVoicemailModal()">Close</button>
                </div>
            </div>
        </div>
        
        <?php elseif ($active_tab == 'recordings'): ?>
        <!-- Call Recordings Tab -->
        <div class="twp-recordings-section">
            <div class="twp-recordings-filters">
                <label>Filter by agent:</label>
                <select id="recording-agent-filter">
                    <option value="">All agents</option>
                    <?php
                    $users = get_users(['role__in' => ['administrator', 'twp_agent']]);
                    foreach ($users as $user) {
                        echo '<option value="' . $user->ID . '">' . esc_html($user->display_name) . '</option>';
                    }
                    ?>
                </select>
                
                <label>Date range:</label>
                <input type="date" id="recording-date-from" />
                <input type="date" id="recording-date-to" />
                
                <button class="button" onclick="filterRecordings()">Filter</button>
                <button class="button" onclick="refreshRecordings()">Refresh</button>
            </div>
            
            <div class="twp-recordings-stats">
                <div class="stat-card">
                    <h3>Total Recordings</h3>
                    <div class="stat-value" id="total-recordings">
                        <?php
                        global $wpdb;
                        $recordings_table = $wpdb->prefix . 'twp_call_recordings';
                        echo $wpdb->get_var("SELECT COUNT(*) FROM $recordings_table WHERE status = 'completed'");
                        ?>
                    </div>
                </div>
                
                <div class="stat-card">
                    <h3>Today</h3>
                    <div class="stat-value" id="today-recordings">
                        <?php
                        echo $wpdb->get_var("SELECT COUNT(*) FROM $recordings_table WHERE DATE(started_at) = CURDATE()");
                        ?>
                    </div>
                </div>
                
                <div class="stat-card">
                    <h3>Total Duration</h3>
                    <div class="stat-value" id="total-duration">
                        <?php
                        $total_seconds = $wpdb->get_var("SELECT SUM(duration) FROM $recordings_table");
                        echo $total_seconds ? round($total_seconds / 60) . ' min' : '0 min';
                        ?>
                    </div>
                </div>
            </div>
            
            <table class="wp-list-table widefat fixed striped">
                <thead>
                    <tr>
                        <th>Date/Time</th>
                        <th>From</th>
                        <th>To</th>
                        <th>Agent</th>
                        <th>Duration</th>
                        <th>Actions</th>
                    </tr>
                </thead>
                <tbody id="recordings-table-body">
                    <tr>
                        <td colspan="6">Loading recordings...</td>
                    </tr>
                </tbody>
            </table>
        </div>
        
        <script>
        jQuery(document).ready(function($) {
            <?php if ($active_tab == 'recordings'): ?>
            loadRecordings();
            <?php endif; ?>
        });
        
        function loadRecordings() {
            jQuery.ajax({
                url: ajaxurl,
                method: 'POST',
                data: {
                    action: 'twp_get_call_recordings',
                    nonce: '<?php echo wp_create_nonce('twp_ajax_nonce'); ?>'
                },
                success: function(response) {
                    if (response.success) {
                        displayRecordings(response.data);
                    } else {
                        jQuery('#recordings-table-body').html('<tr><td colspan="6">Failed to load recordings</td></tr>');
                    }
                },
                error: function() {
                    jQuery('#recordings-table-body').html('<tr><td colspan="6">Error loading recordings</td></tr>');
                }
            });
        }
        
        function displayRecordings(recordings) {
            var tbody = jQuery('#recordings-table-body');
            
            if (recordings.length === 0) {
                tbody.html('<tr><td colspan="6">No recordings found</td></tr>');
                return;
            }
            
            var html = '';
            recordings.forEach(function(recording) {
                html += '<tr>';
                html += '<td>' + recording.started_at + '</td>';
                html += '<td>' + recording.from_number + '</td>';
                html += '<td>' + recording.to_number + '</td>';
                html += '<td>' + (recording.agent_name || 'Unknown') + '</td>';
                html += '<td>' + formatDuration(recording.duration) + '</td>';
                html += '<td>';
                if (recording.has_recording) {
                    var proxyUrl = '<?php echo home_url('/wp-json/twilio-webhook/v1/recording-audio/'); ?>' + recording.id;
                    html += '<button class="button button-small" onclick="playRecording(\'' + proxyUrl + '\')">Play</button> ';
                    html += '<a href="' + proxyUrl + '" class="button button-small" download>Download</a>';
                    <?php if (current_user_can('manage_options')): ?>
                    html += ' <button class="button button-small button-link-delete" onclick="deleteRecording(' + recording.id + ')">Delete</button>';
                    <?php endif; ?>
                } else {
                    html += 'Processing...';
                }
                html += '</td>';
                html += '</tr>';
            });
            
            tbody.html(html);
        }
        
        function formatDuration(seconds) {
            if (!seconds) return '0:00';
            var minutes = Math.floor(seconds / 60);
            var remainingSeconds = seconds % 60;
            return minutes + ':' + String(remainingSeconds).padStart(2, '0');
        }
        
        function playRecording(url) {
            var audio = new Audio(url);
            audio.play();
        }
        
        function refreshRecordings() {
            loadRecordings();
        }
        
        function filterRecordings() {
            // TODO: Implement filtering logic
            loadRecordings();
        }
        
        function deleteRecording(recordingId) {
            if (!confirm('Are you sure you want to delete this recording? This action cannot be undone.')) {
                return;
            }
            
            jQuery.ajax({
                url: ajaxurl,
                method: 'POST',
                data: {
                    action: 'twp_delete_recording',
                    recording_id: recordingId,
                    nonce: '<?php echo wp_create_nonce('twp_ajax_nonce'); ?>'
                },
                success: function(response) {
                    if (response.success) {
                        alert('Recording deleted successfully');
                        loadRecordings();
                    } else {
                        alert('Failed to delete recording: ' + (response.data || 'Unknown error'));
                    }
                },
                error: function() {
                    alert('Error deleting recording');
                }
            });
        }
        </script>
        <?php endif; ?>
        <?php
    }
    
    /**
     * Display call logs page
     */
    public function display_call_logs_page() {
        ?>
        <div class="wrap">
            <h1>Call Logs</h1>
            
            <div class="twp-call-log-filters">
                <label>Phone Number:</label>
                <select id="call-log-phone-filter">
                    <option value="">All numbers</option>
                    <?php
                    global $wpdb;
                    $table = $wpdb->prefix . 'twp_call_log';
                    $numbers = $wpdb->get_results("SELECT DISTINCT from_number FROM $table WHERE from_number != '' ORDER BY from_number");
                    foreach ($numbers as $number) {
                        echo '<option value="' . esc_attr($number->from_number) . '">' . esc_html($number->from_number) . '</option>';
                    }
                    ?>
                </select>
                
                <label>Status:</label>
                <select id="call-log-status-filter">
                    <option value="">All statuses</option>
                    <option value="initiated">Initiated</option>
                    <option value="ringing">Ringing</option>
                    <option value="answered">Answered</option>
                    <option value="completed">Completed</option>
                    <option value="busy">Busy</option>
                    <option value="failed">Failed</option>
                    <option value="no-answer">No Answer</option>
                </select>
                
                <label>Date range:</label>
                <input type="date" id="call-log-date-from" />
                <input type="date" id="call-log-date-to" />
                
                <button class="button" onclick="filterCallLogs()">Filter</button>
                <button class="button" onclick="exportCallLogs()">Export</button>
            </div>
            
            <div class="twp-call-log-stats">
                <div class="stat-card">
                    <h3>Total Calls</h3>
                    <div class="stat-value">
                        <?php
                        echo $wpdb->get_var("SELECT COUNT(*) FROM $table");
                        ?>
                    </div>
                </div>
                
                <div class="stat-card">
                    <h3>Today</h3>
                    <div class="stat-value">
                        <?php
                        echo $wpdb->get_var("SELECT COUNT(*) FROM $table WHERE DATE(created_at) = CURDATE()");
                        ?>
                    </div>
                </div>
                
                <div class="stat-card">
                    <h3>Answered</h3>
                    <div class="stat-value">
                        <?php
                        echo $wpdb->get_var("SELECT COUNT(*) FROM $table WHERE status = 'completed' AND duration > 0");
                        ?>
                    </div>
                </div>
                
                <div class="stat-card">
                    <h3>Avg Duration</h3>
                    <div class="stat-value">
                        <?php
                        $avg = $wpdb->get_var("SELECT AVG(duration) FROM $table WHERE duration > 0");
                        echo $avg ? round($avg) . 's' : '0s';
                        ?>
                    </div>
                </div>
            </div>
            
            <table class="wp-list-table widefat fixed striped" id="call-logs-table">
                <thead>
                    <tr>
                        <th>Date/Time</th>
                        <th>From Number</th>
                        <th>To Number</th>
                        <th>Status</th>
                        <th>Duration</th>
                        <th>Workflow</th>
                        <th>Queue Time</th>
                        <th>Actions Taken</th>
                        <th>Details</th>
                    </tr>
                </thead>
                <tbody>
                    <?php $this->display_call_logs_table(); ?>
                </tbody>
            </table>
        </div>
        
        <!-- Call Detail Modal -->
        <div id="call-detail-modal" class="twp-modal" style="display: none;">
            <div class="twp-modal-content">
                <h2 id="call-detail-title">Call Details</h2>
                
                <div class="call-timeline">
                    <h4>Call Timeline:</h4>
                    <div id="call-timeline-content">
                        <!-- Timeline will be populated here -->
                    </div>
                </div>
                
                <div class="call-details-grid">
                    <div class="detail-section">
                        <h4>Call Information</h4>
                        <div id="call-basic-info"></div>
                    </div>
                    
                    <div class="detail-section">
                        <h4>Actions Taken</h4>
                        <div id="call-actions-taken"></div>
                    </div>
                </div>
                
                <div class="modal-buttons">
                    <button class="button" onclick="closeCallDetailModal()">Close</button>
                </div>
            </div>
        </div>
        <?php
    }
    
    /**
     * Display agent groups page
     */
    public function display_groups_page() {
        ?>
        <div class="wrap">
            <h1>Agent Groups <button class="button button-primary" onclick="openGroupModal()">Add New Group</button></h1>
            
            <table class="wp-list-table widefat fixed striped">
                <thead>
                    <tr>
                        <th>Group Name</th>
                        <th>Description</th>
                        <th>Members</th>
                        <th>Ring Strategy</th>
                        <th>Timeout</th>
                        <th>Actions</th>
                    </tr>
                </thead>
                <tbody id="groups-list">
                    <?php
                    $groups = TWP_Agent_Groups::get_all_groups();
                    foreach ($groups as $group) {
                        $members = TWP_Agent_Groups::get_group_members($group->id);
                        $member_count = count($members);
                        ?>
                        <tr>
                            <td><?php echo esc_html($group->group_name); ?></td>
                            <td><?php echo esc_html($group->description); ?></td>
                            <td><?php echo $member_count; ?> members</td>
                            <td><?php echo esc_html($group->ring_strategy); ?></td>
                            <td><?php echo esc_html($group->timeout_seconds); ?>s</td>
                            <td>
                                <button class="button" onclick="editGroup(<?php echo $group->id; ?>)">Edit</button>
                                <button class="button" onclick="manageGroupMembers(<?php echo $group->id; ?>)">Members</button>
                                <button class="button" onclick="deleteGroup(<?php echo $group->id; ?>)">Delete</button>
                            </td>
                        </tr>
                        <?php
                    }
                    ?>
                </tbody>
            </table>
        </div>
        
        <!-- Group Modal -->
        <div id="group-modal" class="twp-modal" style="display: none;">
            <div class="twp-modal-content">
                <div class="twp-modal-header">
                    <h2 id="group-modal-title">Add New Group</h2>
                    <button class="twp-modal-close" onclick="closeGroupModal()">&times;</button>
                </div>
                <div class="twp-modal-body">
                    <form id="group-form">
                        <input type="hidden" id="group-id" name="group_id" value="">
                        
                        <label>Group Name:</label>
                        <input type="text" name="group_name" required class="regular-text">
                        
                        <label>Description:</label>
                        <textarea name="description" rows="3" class="regular-text"></textarea>
                        
                        <label>Ring Strategy:</label>
                        <select name="ring_strategy">
                            <option value="simultaneous">Simultaneous (ring all at once)</option>
                            <option value="sequential">Sequential (ring in order)</option>
                        </select>
                        
                        <label>Timeout (seconds):</label>
                        <input type="number" name="timeout_seconds" value="30" min="5" max="120">
                    </form>
                </div>
                <div class="twp-modal-footer">
                    <button class="button button-primary" onclick="saveGroup()">Save Group</button>
                    <button class="button" onclick="closeGroupModal()">Cancel</button>
                </div>
            </div>
        </div>
        
        <!-- Members Modal -->
        <div id="members-modal" class="twp-modal" style="display: none;">
            <div class="twp-modal-content" style="max-width: 800px;">
                <div class="twp-modal-header">
                    <h2 id="members-modal-title">Manage Group Members</h2>
                    <button class="twp-modal-close" onclick="closeMembersModal()">&times;</button>
                </div>
                <div class="twp-modal-body">
                    <input type="hidden" id="current-group-id" value="">
                    
                    <div class="add-member-section">
                        <h3>Add Member</h3>
                        <select id="add-member-select">
                            <option value="">Select a user...</option>
                            <?php
                            $users = get_users(array('orderby' => 'display_name'));
                            foreach ($users as $user) {
                                $phone = get_user_meta($user->ID, 'twp_phone_number', true);
                                ?>
                                <option value="<?php echo $user->ID; ?>">
                                    <?php echo esc_html($user->display_name); ?> 
                                    <?php echo $phone ? '(' . esc_html($phone) . ')' : '(no phone)'; ?>
                                </option>
                                <?php
                            }
                            ?>
                        </select>
                        <input type="number" id="add-member-priority" placeholder="Priority" value="0" min="0">
                        <button class="button" onclick="addGroupMember()">Add Member</button>
                    </div>
                    
                    <h3>Current Members</h3>
                    <table class="wp-list-table widefat fixed striped">
                        <thead>
                            <tr>
                                <th>Name</th>
                                <th>Phone Number</th>
                                <th>Priority</th>
                                <th>Status</th>
                                <th>Actions</th>
                            </tr>
                        </thead>
                        <tbody id="group-members-list">
                            <!-- Populated by JavaScript -->
                        </tbody>
                    </table>
                </div>
                <div class="twp-modal-footer">
                    <button class="button" onclick="closeMembersModal()">Close</button>
                </div>
            </div>
        </div>
        <?php
    }
    
    /**
     * Display agent queue page
     */
    public function display_agent_queue_page() {
        $current_user_id = get_current_user_id();
        $agent_status = TWP_Agent_Manager::get_agent_status($current_user_id);
        $agent_stats = TWP_Agent_Manager::get_agent_stats($current_user_id);
        
        // Ensure database tables exist
        TWP_Activator::ensure_tables_exist();
        
        // Get user's extension and assigned queues - create if they don't exist
        $extension_data = TWP_User_Queue_Manager::get_user_extension_data($current_user_id);
        
        // If user doesn't have queues yet, create them
        if (!$extension_data) {
            $user_phone = get_user_meta($current_user_id, 'twp_phone_number', true);
            if ($user_phone) {
                $creation_result = TWP_User_Queue_Manager::create_user_queues($current_user_id);
                if ($creation_result['success']) {
                    $extension_data = TWP_User_Queue_Manager::get_user_extension_data($current_user_id);
                }
            }
        }
        
        $assigned_queues = TWP_User_Queue_Manager::get_user_assigned_queues($current_user_id);
        
        // Check login status
        $is_logged_in = TWP_Agent_Manager::is_agent_logged_in($current_user_id);
        ?>
        <div class="wrap">
            <h1>Agent Queue Dashboard</h1>
            
            <div class="agent-status-bar">
                <div class="status-info">
                    <strong>Extension:</strong> 
                    <span class="extension-badge"><?php echo $extension_data ? esc_html($extension_data['extension']) : 'Not Assigned'; ?></span>
                    
                    <strong>Login Status:</strong>
                    <button id="login-toggle-btn" class="button <?php echo $is_logged_in ? 'button-secondary' : 'button-primary'; ?>" onclick="toggleAgentLogin()">
                        <?php echo $is_logged_in ? 'Log Out' : 'Log In'; ?>
                    </button>
                    
                    <strong>Your Status:</strong>
                    <select id="agent-status-select" onchange="updateAgentStatus(this.value)" <?php echo !$is_logged_in ? 'disabled' : ''; ?>>
                        <option value="available" <?php selected($agent_status->status ?? '', 'available'); ?>>Available</option>
                        <option value="busy" <?php selected($agent_status->status ?? '', 'busy'); ?>>Busy</option>
                        <option value="offline" <?php selected($agent_status->status ?? 'offline', 'offline'); ?>>Offline</option>
                    </select>
                </div>
                <div class="agent-stats">
                    <span>Calls Today: <strong><?php echo $agent_stats['calls_today']; ?></strong></span>
                    <span>Total Calls: <strong><?php echo $agent_stats['total_calls']; ?></strong></span>
                    <span>Avg Duration: <strong><?php echo round($agent_stats['avg_duration'] ?? 0); ?>s</strong></span>
                </div>
            </div>
            
            <div class="assigned-queues-section">
                <h2>My Assigned Queues</h2>
                <?php if (empty($assigned_queues)): ?>
                    <div class="notice notice-info">
                        <p>
                            <strong>No queues assigned.</strong> 
                            <?php if (!$extension_data): ?>
                                Please configure your phone number in your user profile to get assigned queues automatically.
                                <br><br>
                                <button class="button button-primary" onclick="initializeUserQueues()">Initialize My Queues</button>
                            <?php else: ?>
                                Your personal queue is being set up. Please refresh the page.
                            <?php endif; ?>
                        </p>
                    </div>
                <?php else: ?>
                    <div class="queue-tabs">
                        <?php foreach ($assigned_queues as $index => $queue): ?>
                            <button class="queue-tab <?php echo $index === 0 ? 'active' : ''; ?>" 
                                    data-queue-id="<?php echo esc_attr($queue['id']); ?>"
                                    onclick="switchQueueView(<?php echo esc_attr($queue['id']); ?>)">
                                <?php echo esc_html($queue['queue_name']); ?>
                                <?php if ($queue['is_hold_queue']): ?>
                                    <span class="hold-indicator">(Hold)</span>
                                <?php endif; ?>
                                <span class="queue-count" id="queue-count-<?php echo esc_attr($queue['id']); ?>">
                                    (<?php echo intval($queue['waiting_calls']); ?>)
                                </span>
                            </button>
                        <?php endforeach; ?>
                    </div>
                    
                    <div id="queue-calls-container">
                        <?php foreach ($assigned_queues as $index => $queue): ?>
                            <div class="queue-content" id="queue-content-<?php echo esc_attr($queue['id']); ?>" 
                                 style="<?php echo $index > 0 ? 'display:none;' : ''; ?>">
                                <table class="wp-list-table widefat fixed striped">
                                    <thead>
                                        <tr>
                                            <th>Position</th>
                                            <th>Caller Number</th>
                                            <th>Wait Time</th>
                                            <th>Status</th>
                                            <th>Actions</th>
                                        </tr>
                                    </thead>
                                    <tbody id="queue-calls-<?php echo esc_attr($queue['id']); ?>">
                                        <tr><td colspan="5">Loading...</td></tr>
                                    </tbody>
                                </table>
                            </div>
                        <?php endforeach; ?>
                    </div>
                <?php endif; ?>
            </div>
            
            <div class="my-groups-section">
                <h2>My Groups</h2>
                <table class="wp-list-table widefat fixed striped">
                    <thead>
                        <tr>
                            <th>Group Name</th>
                            <th>Members</th>
                            <th>Your Priority</th>
                        </tr>
                    </thead>
                    <tbody>
                        <?php
                        $my_groups = TWP_Agent_Groups::get_user_groups($current_user_id);
                        foreach ($my_groups as $group) {
                            $members = TWP_Agent_Groups::get_group_members($group->id);
                            $my_priority = 0;
                            foreach ($members as $member) {
                                if ($member->user_id == $current_user_id) {
                                    $my_priority = $member->priority;
                                    break;
                                }
                            }
                            ?>
                            <tr>
                                <td><?php echo esc_html($group->group_name); ?></td>
                                <td><?php echo count($members); ?> members</td>
                                <td><?php echo $my_priority; ?></td>
                            </tr>
                            <?php
                        }
                        ?>
                    </tbody>
                </table>
            </div>
        </div>
        
        <style>
        .agent-status-bar {
            background: #fff;
            padding: 15px;
            margin-bottom: 20px;
            border: 1px solid #ccc;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .agent-stats span {
            margin-left: 20px;
        }
        .extension-badge {
            background: #2271b1;
            color: white;
            padding: 2px 8px;
            border-radius: 3px;
            margin: 0 10px;
        }
        .assigned-queues-section, .my-groups-section {
            background: #fff;
            padding: 20px;
            margin-bottom: 20px;
            border: 1px solid #ccc;
        }
        .queue-tabs {
            display: flex;
            gap: 10px;
            margin-bottom: 20px;
            border-bottom: 2px solid #ddd;
        }
        .queue-tab {
            padding: 10px 20px;
            background: #f1f1f1;
            border: 1px solid #ddd;
            border-bottom: none;
            cursor: pointer;
            position: relative;
            bottom: -2px;
        }
        .queue-tab.active {
            background: white;
            border-bottom: 2px solid white;
        }
        .queue-tab .queue-count {
            background: #e74c3c;
            color: white;
            padding: 2px 6px;
            border-radius: 10px;
            font-size: 12px;
            margin-left: 5px;
        }
        .queue-tab .hold-indicator {
            color: #f39c12;
            font-weight: bold;
        }
        .action-buttons {
            display: flex;
            gap: 5px;
            flex-wrap: wrap;
        }
        .action-buttons button {
            padding: 5px 10px;
            font-size: 12px;
            cursor: pointer;
            border: none;
            border-radius: 3px;
            color: white;
        }
        .btn-answer {
            background: #27ae60;
        }
        .btn-answer:hover {
            background: #229954;
        }
        .btn-listen {
            background: #3498db;
        }
        .btn-listen:hover {
            background: #2980b9;
        }
        .btn-record {
            background: #e74c3c;
        }
        .btn-record:hover {
            background: #c0392b;
        }
        .btn-transfer {
            background: #f39c12;
        }
        .btn-transfer:hover {
            background: #e67e22;
        }
        .btn-voicemail {
            background: #9b59b6;
        }
        .btn-voicemail:hover {
            background: #8e44ad;
        }
        .btn-disconnect {
            background: #95a5a6;
        }
        .btn-disconnect:hover {
            background: #7f8c8d;
        }
        .action-buttons button:disabled {
            background: #ccc;
            cursor: not-allowed;
        }
        </style>
        
        <script>
        // Refresh queue data every 5 seconds
        let refreshInterval;
        let currentUser = <?php echo $current_user_id; ?>;
        let assignedQueues = <?php echo json_encode(!empty($assigned_queues) ? array_column($assigned_queues, 'id') : []); ?>;
        
        // Get the appropriate nonce based on context
        let ajaxNonce = '<?php echo wp_create_nonce(is_admin() ? 'twp_ajax_nonce' : 'twp_frontend_nonce'); ?>';
        
        function startQueueRefresh() {
            refreshQueues();
            refreshInterval = setInterval(refreshQueues, 5000);
        }
        
        function initializeUserQueues() {
            jQuery.ajax({
                url: ajaxurl,
                method: 'POST',
                data: {
                    action: 'twp_initialize_user_queues',
                    nonce: ajaxNonce
                },
                success: function(response) {
                    if (response.success) {
                        alert('Queues initialized successfully! The page will now refresh.');
                        location.reload();
                    } else {
                        alert('Failed to initialize queues: ' + response.data);
                    }
                }
            });
        }
        
        function refreshQueues() {
            assignedQueues.forEach(queueId => {
                jQuery.ajax({
                    url: ajaxurl,
                    method: 'POST',
                    data: {
                        action: 'twp_get_queue_calls',
                        queue_id: queueId,
                        nonce: ajaxNonce
                    },
                    success: function(response) {
                        if (response.success) {
                            updateQueueDisplay(queueId, response.data);
                        }
                    }
                });
            });
        }
        
        function updateQueueDisplay(queueId, calls) {
            const tbody = document.getElementById('queue-calls-' + queueId);
            const countBadge = document.getElementById('queue-count-' + queueId);
            
            if (countBadge) {
                countBadge.textContent = '(' + calls.length + ')';
            }
            
            if (calls.length === 0) {
                tbody.innerHTML = '<tr><td colspan="5">No calls in queue</td></tr>';
                return;
            }
            
            let html = '';
            calls.forEach(call => {
                const waitTime = Math.floor((Date.now() - new Date(call.joined_at).getTime()) / 1000);
                const waitMinutes = Math.floor(waitTime / 60);
                const waitSeconds = waitTime % 60;
                
                html += `
                    <tr>
                        <td>${call.position}</td>
                        <td>${call.from_number}</td>
                        <td>${waitMinutes}:${waitSeconds.toString().padStart(2, '0')}</td>
                        <td>${call.status}</td>
                        <td>
                            <div class="action-buttons">
                                <button class="btn-answer" onclick="answerCall('${call.call_sid}', ${queueId})">Answer</button>
                                <button class="btn-listen" onclick="listenToCall('${call.call_sid}')">Listen</button>
                                <button class="btn-record" onclick="toggleRecording('${call.call_sid}')">Record</button>
                                <button class="btn-transfer" onclick="showTransferDialog('${call.call_sid}', ${queueId})">Transfer</button>
                                <button class="btn-voicemail" onclick="sendToVoicemail('${call.call_sid}', ${queueId})">Voicemail</button>
                                <button class="btn-disconnect" onclick="disconnectCall('${call.call_sid}', ${queueId})">Disconnect</button>
                            </div>
                        </td>
                    </tr>
                `;
            });
            
            tbody.innerHTML = html;
        }
        
        function switchQueueView(queueId) {
            // Hide all queue contents
            document.querySelectorAll('.queue-content').forEach(content => {
                content.style.display = 'none';
            });
            
            // Remove active class from all tabs
            document.querySelectorAll('.queue-tab').forEach(tab => {
                tab.classList.remove('active');
            });
            
            // Show selected queue content
            document.getElementById('queue-content-' + queueId).style.display = 'block';
            
            // Add active class to selected tab
            document.querySelector('[data-queue-id="' + queueId + '"]').classList.add('active');
        }
        
        function toggleAgentLogin() {
            jQuery.ajax({
                url: ajaxurl,
                method: 'POST',
                data: {
                    action: 'twp_toggle_agent_login',
                    nonce: ajaxNonce
                },
                success: function(response) {
                    if (response.success) {
                        location.reload();
                    } else {
                        alert('Failed to change login status: ' + response.data);
                    }
                }
            });
        }
        
        function answerCall(callSid, queueId) {
            jQuery.ajax({
                url: ajaxurl,
                method: 'POST',
                data: {
                    action: 'twp_answer_queue_call',
                    call_sid: callSid,
                    queue_id: queueId,
                    nonce: ajaxNonce
                },
                success: function(response) {
                    if (response.success) {
                        alert('Call connected!');
                        refreshQueues();
                    } else {
                        alert('Failed to answer call: ' + response.data);
                    }
                }
            });
        }
        
        function listenToCall(callSid) {
            jQuery.ajax({
                url: ajaxurl,
                method: 'POST',
                data: {
                    action: 'twp_monitor_call',
                    call_sid: callSid,
                    mode: 'listen',
                    nonce: ajaxNonce
                },
                success: function(response) {
                    if (response.success) {
                        alert('Listening to call...');
                    } else {
                        alert('Failed to monitor call: ' + response.data);
                    }
                }
            });
        }
        
        function toggleRecording(callSid) {
            jQuery.ajax({
                url: ajaxurl,
                method: 'POST',
                data: {
                    action: 'twp_toggle_call_recording',
                    call_sid: callSid,
                    nonce: ajaxNonce
                },
                success: function(response) {
                    if (response.success) {
                        alert(response.data.recording ? 'Recording started' : 'Recording stopped');
                    } else {
                        alert('Failed to toggle recording: ' + response.data);
                    }
                }
            });
        }
        
        function showTransferDialog(callSid, currentQueueId) {
            // Fetch available agents and their extensions
            jQuery.ajax({
                url: ajaxurl,
                method: 'POST',
                data: {
                    action: 'twp_get_transfer_targets',
                    nonce: ajaxNonce
                },
                success: function(response) {
                    if (response.success) {
                        showTransferModal(response.data, callSid, currentQueueId);
                    } else {
                        // Fallback to simple prompt
                        const targetQueueId = prompt('Enter target queue ID or extension:');
                        if (targetQueueId) {
                            transferCall(callSid, currentQueueId, targetQueueId);
                        }
                    }
                }
            });
        }
        
        function showTransferModal(targets, callSid, currentQueueId) {
            // Remove existing modal if any
            jQuery('#transfer-modal').remove();
            
            let optionsHtml = '';
            
            // Add user extensions section
            if (targets.users && targets.users.length > 0) {
                optionsHtml += '<div class="transfer-section"><h4>Transfer to Agent</h4>';
                targets.users.forEach(user => {
                    const statusClass = user.is_logged_in ? 'online' : 'offline';
                    const statusText = user.is_logged_in ? '🟢' : '🔴';
                    optionsHtml += `
                        <div class="transfer-option ${statusClass}" data-target="${user.extension}">
                            <span class="status-indicator">${statusText}</span>
                            <strong>${user.extension}</strong> - ${user.display_name}
                            <span class="user-status">(${user.status})</span>
                        </div>
                    `;
                });
                optionsHtml += '</div>';
            }
            
            // Add general queues section
            if (targets.queues && targets.queues.length > 0) {
                optionsHtml += '<div class="transfer-section"><h4>Transfer to Queue</h4>';
                targets.queues.forEach(queue => {
                    optionsHtml += `
                        <div class="transfer-option" data-target="${queue.id}">
                            <strong>${queue.queue_name}</strong>
                            <span class="queue-info">(${queue.waiting_calls} waiting)</span>
                        </div>
                    `;
                });
                optionsHtml += '</div>';
            }
            
            const modalHtml = `
                <div id="transfer-modal" class="twp-modal">
                    <div class="twp-modal-content">
                        <div class="twp-modal-header">
                            <h3>Transfer Call</h3>
                            <span class="twp-modal-close">&times;</span>
                        </div>
                        <div class="twp-modal-body">
                            ${optionsHtml}
                        </div>
                        <div class="twp-modal-footer">
                            <button class="button button-secondary" id="cancel-transfer">Cancel</button>
                        </div>
                    </div>
                </div>
            `;
            
            jQuery('body').append(modalHtml);
            
            // Add modal styles if not already added
            if (!jQuery('#transfer-modal-styles').length) {
                jQuery('head').append(`
                    <style id="transfer-modal-styles">
                    .twp-modal {
                        display: block;
                        position: fixed;
                        z-index: 100000;
                        left: 0;
                        top: 0;
                        width: 100%;
                        height: 100%;
                        background-color: rgba(0,0,0,0.4);
                    }
                    .twp-modal-content {
                        background-color: #fefefe;
                        margin: 10% auto;
                        padding: 0;
                        border: 1px solid #888;
                        width: 500px;
                        max-width: 90%;
                        border-radius: 4px;
                        max-height: 70vh;
                        display: flex;
                        flex-direction: column;
                    }
                    .twp-modal-header {
                        padding: 15px 20px;
                        background: #f1f1f1;
                        border-bottom: 1px solid #ddd;
                        display: flex;
                        justify-content: space-between;
                        align-items: center;
                    }
                    .twp-modal-header h3 {
                        margin: 0;
                    }
                    .twp-modal-close {
                        color: #aaa;
                        font-size: 28px;
                        font-weight: bold;
                        cursor: pointer;
                        line-height: 20px;
                    }
                    .twp-modal-close:hover {
                        color: #000;
                    }
                    .twp-modal-body {
                        padding: 20px;
                        overflow-y: auto;
                        flex: 1;
                    }
                    .twp-modal-footer {
                        padding: 15px 20px;
                        background: #f1f1f1;
                        border-top: 1px solid #ddd;
                        text-align: right;
                    }
                    .transfer-section {
                        margin-bottom: 20px;
                    }
                    .transfer-section h4 {
                        margin: 0 0 10px 0;
                        color: #23282d;
                    }
                    .transfer-option {
                        padding: 10px 15px;
                        margin: 5px 0;
                        border: 1px solid #ddd;
                        border-radius: 3px;
                        cursor: pointer;
                        display: flex;
                        align-items: center;
                        gap: 10px;
                        background: white;
                        transition: all 0.2s;
                    }
                    .transfer-option:hover {
                        background: #f0f8ff;
                        border-color: #2271b1;
                    }
                    .transfer-option.offline {
                        opacity: 0.6;
                    }
                    .transfer-option .status-indicator {
                        font-size: 12px;
                    }
                    .transfer-option .user-status {
                        margin-left: auto;
                        color: #666;
                        font-size: 12px;
                    }
                    .transfer-option .queue-info {
                        margin-left: auto;
                        color: #666;
                        font-size: 12px;
                    }
                    </style>
                `);
            }
            
            // Event handlers
            jQuery('#transfer-modal .transfer-option').on('click', function() {
                const target = jQuery(this).data('target');
                jQuery('#transfer-modal').remove();
                transferCall(callSid, currentQueueId, target);
            });
            
            jQuery('#transfer-modal .twp-modal-close, #cancel-transfer').on('click', function() {
                jQuery('#transfer-modal').remove();
            });
            
            // Close modal on outside click
            jQuery('#transfer-modal').on('click', function(e) {
                if (e.target === this) {
                    jQuery(this).remove();
                }
            });
        }
        
        function transferCall(callSid, currentQueueId, targetQueueId) {
            jQuery.ajax({
                url: ajaxurl,
                method: 'POST',
                data: {
                    action: 'twp_transfer_call',
                    call_sid: callSid,
                    current_queue_id: currentQueueId,
                    target_queue_id: targetQueueId,
                    nonce: ajaxNonce
                },
                success: function(response) {
                    if (response.success) {
                        alert('Call transferred successfully');
                        refreshQueues();
                    } else {
                        alert('Failed to transfer call: ' + response.data);
                    }
                }
            });
        }
        
        function sendToVoicemail(callSid, queueId) {
            if (confirm('Send this call to voicemail?')) {
                jQuery.ajax({
                    url: ajaxurl,
                    method: 'POST',
                    data: {
                        action: 'twp_send_to_voicemail',
                        call_sid: callSid,
                        queue_id: queueId,
                        nonce: ajaxNonce
                    },
                    success: function(response) {
                        if (response.success) {
                            alert('Call sent to voicemail');
                            refreshQueues();
                        } else {
                            alert('Failed to send to voicemail: ' + response.data);
                        }
                    }
                });
            }
        }
        
        function disconnectCall(callSid, queueId) {
            if (confirm('Disconnect this call?')) {
                jQuery.ajax({
                    url: ajaxurl,
                    method: 'POST',
                    data: {
                        action: 'twp_disconnect_call',
                        call_sid: callSid,
                        queue_id: queueId,
                        nonce: ajaxNonce
                    },
                    success: function(response) {
                        if (response.success) {
                            alert('Call disconnected');
                            refreshQueues();
                        } else {
                            alert('Failed to disconnect call: ' + response.data);
                        }
                    }
                });
            }
        }
        
        // Start refresh when page loads
        jQuery(document).ready(function() {
            startQueueRefresh();
        });
        
        // Clean up interval when page unloads
        window.addEventListener('beforeunload', function() {
            if (refreshInterval) {
                clearInterval(refreshInterval);
            }
        });
        </script>
        <?php
    }
    
    /**
     * Display outbound calls page
     */
    public function display_outbound_calls_page() {
        // Ensure database tables exist
        TWP_Activator::ensure_tables_exist();
        ?>
        <div class="wrap">
            <h1>Outbound Calls</h1>
            <p>Initiate outbound calls to connect customers with your phone. Click-to-call functionality allows you to dial any number.</p>
            
            <div class="outbound-call-section">
                <h2>Make an Outbound Call</h2>
                <div class="call-form">
                    <div class="form-field">
                        <label for="from-number">From Number:</label>
                        <select id="from-number" name="from_number" required>
                            <option value="">Select a number...</option>
                            <?php
                            // Get Twilio phone numbers
                            $twilio = new TWP_Twilio_API();
                            $numbers_result = $twilio->get_phone_numbers();
                            
                            if ($numbers_result['success'] && isset($numbers_result['data']['incoming_phone_numbers'])) {
                                $numbers = $numbers_result['data']['incoming_phone_numbers'];
                                if (is_array($numbers) && !empty($numbers)) {
                                    foreach ($numbers as $number) {
                                        echo '<option value="' . esc_attr($number['phone_number']) . '">' . esc_html($number['phone_number']) . '</option>';
                                    }
                                } else {
                                    echo '<option value="" disabled>No phone numbers found - purchase a number first</option>';
                                }
                            } else {
                                echo '<option value="" disabled>Error loading phone numbers - check API credentials</option>';
                                if (isset($numbers_result['error'])) {
                                    echo '<option value="" disabled>Error: ' . esc_html($numbers_result['error']) . '</option>';
                                }
                                // Debug info for troubleshooting
                                if (current_user_can('manage_options') && WP_DEBUG) {
                                    echo '<option value="" disabled>Debug: ' . esc_html(json_encode($numbers_result)) . '</option>';
                                }
                            }
                            ?>
                        </select>
                        <p class="description">Select the Twilio number to call from</p>
                    </div>
                    
                    <div class="form-field">
                        <label for="to-number">To Number:</label>
                        <input type="tel" id="to-number" name="to_number" placeholder="+1234567890" required>
                        <p class="description">Enter the number you want to call (include country code)</p>
                    </div>
                    
                    <div class="form-field">
                        <label for="agent-phone">Your Phone Number:</label>
                        <input type="tel" id="agent-phone" name="agent_phone" 
                               value="<?php echo esc_attr(get_user_meta(get_current_user_id(), 'twp_phone_number', true)); ?>" 
                               placeholder="+1234567890" required>
                        <p class="description">The number where you'll receive the call first</p>
                    </div>
                    
                    <button type="button" class="button button-primary" onclick="initiateOutboundCall()">
                        Place Call
                    </button>
                </div>
            </div>
            
            <div class="recent-calls-section">
                <h2>Recent Outbound Calls</h2>
                <table class="wp-list-table widefat fixed striped">
                    <thead>
                        <tr>
                            <th>Date/Time</th>
                            <th>From</th>
                            <th>To</th>
                            <th>Agent</th>
                            <th>Status</th>
                            <th>Duration</th>
                        </tr>
                    </thead>
                    <tbody id="recent-outbound-calls">
                        <?php
                        // Get recent outbound calls from log
                        global $wpdb;
                        $log_table = $wpdb->prefix . 'twp_call_log';
                        
                        $recent_calls = $wpdb->get_results($wpdb->prepare("
                            SELECT cl.*, u.display_name as agent_name
                            FROM $log_table cl
                            LEFT JOIN {$wpdb->users} u ON JSON_EXTRACT(cl.actions_taken, '$.agent_id') = u.ID
                            WHERE cl.workflow_name = 'Outbound Call' 
                            OR cl.status = 'outbound_initiated'
                            ORDER BY cl.created_at DESC
                            LIMIT 20
                        "));
                        
                        if (empty($recent_calls)) {
                            echo '<tr><td colspan="6">No outbound calls yet</td></tr>';
                        } else {
                            foreach ($recent_calls as $call) {
                                ?>
                                <tr>
                                    <td><?php echo esc_html($this->format_timestamp_with_timezone($call->created_at)); ?></td>
                                    <td><?php echo esc_html($call->from_number ?: 'N/A'); ?></td>
                                    <td><?php echo esc_html($call->to_number ?: 'N/A'); ?></td>
                                    <td><?php echo esc_html($call->agent_name ?: 'N/A'); ?></td>
                                    <td>
                                        <span class="status-<?php echo esc_attr($call->status); ?>">
                                            <?php echo esc_html(ucwords(str_replace('_', ' ', $call->status))); ?>
                                        </span>
                                    </td>
                                    <td><?php echo $call->duration ? esc_html($call->duration . 's') : 'N/A'; ?></td>
                                </tr>
                                <?php
                            }
                        }
                        ?>
                    </tbody>
                </table>
            </div>
        </div>
        
        <style>
        .outbound-call-section {
            background: #fff;
            padding: 20px;
            margin-bottom: 20px;
            border: 1px solid #ccc;
        }
        .call-form .form-field {
            margin-bottom: 15px;
        }
        .call-form label {
            display: block;
            margin-bottom: 5px;
            font-weight: bold;
        }
        .call-form input, .call-form select {
            width: 300px;
            padding: 8px;
            border: 1px solid #ddd;
            border-radius: 3px;
        }
        .call-form .description {
            margin-top: 5px;
            color: #666;
            font-style: italic;
        }
        .recent-calls-section {
            background: #fff;
            padding: 20px;
            border: 1px solid #ccc;
        }
        .status-completed { color: #4CAF50; }
        .status-outbound_initiated { color: #2196F3; }
        .status-busy, .status-failed { color: #f44336; }
        .status-no-answer { color: #ff9800; }
        </style>
        
        <script>
        function initiateOutboundCall() {
            const fromNumber = document.getElementById('from-number').value;
            const toNumber = document.getElementById('to-number').value;
            const agentPhone = document.getElementById('agent-phone').value;
            
            if (!fromNumber || !toNumber || !agentPhone) {
                alert('Please fill in all fields');
                return;
            }
            
            // Validate phone number format
            const phoneRegex = /^\+?[1-9]\d{1,14}$/;
            if (!phoneRegex.test(toNumber.replace(/[\s\-\(\)]/g, ''))) {
                alert('Please enter a valid phone number with country code (e.g., +1234567890)');
                return;
            }
            
            const button = event.target;
            button.disabled = true;
            button.textContent = 'Placing Call...';
            
            jQuery.post(twp_ajax.ajax_url, {
                action: 'twp_initiate_outbound_call_with_from',
                from_number: fromNumber,
                to_number: toNumber,
                agent_phone: agentPhone,
                nonce: twp_ajax.nonce
            }, function(response) {
                if (response.success) {
                    alert('Call initiated! You should receive a call on ' + agentPhone + ' shortly, then the call will connect to ' + toNumber);
                    // Clear form
                    document.getElementById('to-number').value = '';
                    // Refresh recent calls (you could implement this)
                } else {
                    alert('Error initiating call: ' + (response.data.message || response.data || 'Unknown error'));
                }
            }).fail(function() {
                alert('Failed to initiate call. Please try again.');
            }).always(function() {
                button.disabled = false;
                button.textContent = 'Place Call';
            });
        }
        </script>
        <?php
    }
    
    /**
     * Display voicemails table content
     */
    private function display_voicemails_table() {
        global $wpdb;
        $voicemails_table = $wpdb->prefix . 'twp_voicemails';
        $workflows_table = $wpdb->prefix . 'twp_workflows';
        
        $voicemails = $wpdb->get_results("
            SELECT v.*, w.workflow_name 
            FROM $voicemails_table v
            LEFT JOIN $workflows_table w ON v.workflow_id = w.id
            ORDER BY v.created_at DESC
            LIMIT 50
        ");
        
        foreach ($voicemails as $voicemail) {
            ?>
            <tr>
                <td><?php echo esc_html($this->format_timestamp_with_timezone($voicemail->created_at)); ?></td>
                <td><?php echo esc_html($voicemail->from_number); ?></td>
                <td><?php echo esc_html($voicemail->workflow_name ?: 'N/A'); ?></td>
                <td><?php echo $voicemail->duration ? esc_html($voicemail->duration . 's') : 'Unknown'; ?></td>
                <td>
                    <?php if ($voicemail->transcription): ?>
                        <span class="transcription-preview" title="<?php echo esc_attr($voicemail->transcription); ?>">
                            <?php echo esc_html(substr($voicemail->transcription, 0, 50) . '...'); ?>
                        </span>
                    <?php else: ?>
                        <em>No transcription</em>
                    <?php endif; ?>
                </td>
                <td>
                    <?php if ($voicemail->recording_url): ?>
                        <button class="button button-small" 
                                onclick="playVoicemail(<?php echo $voicemail->id; ?>, '<?php echo esc_js($voicemail->recording_url); ?>')">
                            Play
                        </button>
                    <?php else: ?>
                        <em>No recording</em>
                    <?php endif; ?>
                </td>
                <td>
                    <button class="button button-small" onclick="viewVoicemail(<?php echo $voicemail->id; ?>)">View</button>
                    <button class="button button-small button-danger" onclick="deleteVoicemailConfirm(<?php echo $voicemail->id; ?>)">Delete</button>
                </td>
            </tr>
            <?php
        }
        
        if (empty($voicemails)) {
            echo '<tr><td colspan="7">No voicemails found.</td></tr>';
        }
    }
    
    /**
     * Display call logs table content
     */
    private function display_call_logs_table() {
        global $wpdb;
        $logs_table = $wpdb->prefix . 'twp_call_log';
        
        $logs = $wpdb->get_results("
            SELECT *
            FROM $logs_table
            ORDER BY created_at DESC
            LIMIT 100
        ");
        
        foreach ($logs as $log) {
            ?>
            <tr>
                <td><?php echo esc_html($this->format_timestamp_with_timezone($log->created_at)); ?></td>
                <td><?php echo esc_html($log->from_number ?: 'Unknown'); ?></td>
                <td><?php echo esc_html($log->to_number ?: 'System'); ?></td>
                <td>
                    <span class="status-badge status-<?php echo esc_attr(strtolower($log->status)); ?>">
                        <?php echo esc_html(ucfirst($log->status)); ?>
                    </span>
                </td>
                <td><?php echo $log->duration ? esc_html($log->duration . 's') : '-'; ?></td>
                <td><?php echo esc_html($log->workflow_name ?: 'N/A'); ?></td>
                <td><?php echo $log->queue_time ? esc_html($log->queue_time . 's') : '-'; ?></td>
                <td><?php echo esc_html($log->actions_taken ?: 'None'); ?></td>
                <td>
                    <button class="button button-small" onclick="viewCallDetails('<?php echo esc_js($log->call_sid); ?>')">
                        View
                    </button>
                </td>
            </tr>
            <?php
        }
        
        if (empty($logs)) {
            echo '<tr><td colspan="9">No call logs found.</td></tr>';
        }
    }
    
    /**
     * Show admin notices
     */
    public function show_admin_notices() {
        // Check if we're on a plugin page
        $screen = get_current_screen();
        if (!$screen || strpos($screen->id, 'twilio-wp') === false) {
            return;
        }
        
        // Check if database tables exist
        require_once TWP_PLUGIN_DIR . 'includes/class-twp-activator.php';
        $tables_exist = TWP_Activator::ensure_tables_exist();
        
        if (!$tables_exist) {
            ?>
            <div class="notice notice-warning is-dismissible">
                <p>
                    <strong>Twilio WP Plugin:</strong> Database tables were missing and have been created automatically. 
                    If you continue to experience issues, please deactivate and reactivate the plugin.
                </p>
            </div>
            <?php
        }
        
        // Check if ElevenLabs API key is configured
        if (empty(get_option('twp_elevenlabs_api_key'))) {
            ?>
            <div class="notice notice-info is-dismissible">
                <p>
                    <strong>Twilio WP Plugin:</strong> To use text-to-speech features, please configure your 
                    <a href="<?php echo admin_url('admin.php?page=twilio-wp-settings'); ?>">ElevenLabs API key</a>.
                </p>
            </div>
            <?php
        }
        
        // Check if Twilio credentials are configured
        if (empty(get_option('twp_twilio_account_sid')) || empty(get_option('twp_twilio_auth_token'))) {
            ?>
            <div class="notice notice-error">
                <p>
                    <strong>Twilio WP Plugin:</strong> Please configure your 
                    <a href="<?php echo admin_url('admin.php?page=twilio-wp-settings'); ?>">Twilio credentials</a> 
                    to start using the plugin.
                </p>
            </div>
            <?php
        }
    }
    
    /**
     * Register settings
     */
    public function register_settings() {
        register_setting('twilio-wp-settings-group', 'twp_twilio_account_sid');
        register_setting('twilio-wp-settings-group', 'twp_twilio_auth_token');
        register_setting('twilio-wp-settings-group', 'twp_twiml_app_sid');
        register_setting('twilio-wp-settings-group', 'twp_twilio_edge');
        register_setting('twilio-wp-settings-group', 'twp_elevenlabs_api_key');
        register_setting('twilio-wp-settings-group', 'twp_elevenlabs_voice_id');
        register_setting('twilio-wp-settings-group', 'twp_elevenlabs_model_id');
        register_setting('twilio-wp-settings-group', 'twp_default_queue_music_url');
        register_setting('twilio-wp-settings-group', 'twp_hold_music_url');
        register_setting('twilio-wp-settings-group', 'twp_default_queue_timeout');
        register_setting('twilio-wp-settings-group', 'twp_default_queue_size');
        register_setting('twilio-wp-settings-group', 'twp_urgent_keywords');
        register_setting('twilio-wp-settings-group', 'twp_sms_notification_number');
        register_setting('twilio-wp-settings-group', 'twp_default_sms_number');

        // SMS Provider settings
        register_setting('twilio-wp-settings-group', 'twp_sms_provider');
        register_setting('twilio-wp-settings-group', 'twp_aws_access_key');
        register_setting('twilio-wp-settings-group', 'twp_aws_secret_key');
        register_setting('twilio-wp-settings-group', 'twp_aws_region');
        register_setting('twilio-wp-settings-group', 'twp_aws_sns_sender_id');
        register_setting('twilio-wp-settings-group', 'twp_queue_timeout_action');

        // Discord/Slack notification settings
        register_setting('twilio-wp-settings-group', 'twp_discord_webhook_url');
        register_setting('twilio-wp-settings-group', 'twp_slack_webhook_url');
        register_setting('twilio-wp-settings-group', 'twp_notify_on_incoming_calls');
        register_setting('twilio-wp-settings-group', 'twp_notify_on_queue_timeout');
        register_setting('twilio-wp-settings-group', 'twp_notify_on_missed_calls');
        register_setting('twilio-wp-settings-group', 'twp_queue_timeout_threshold');
    }
    
    /**
     * Enqueue styles
     */
    public function enqueue_styles() {
        // Enqueue ThickBox styles for WordPress native modals
        wp_enqueue_style('thickbox');
        
        wp_enqueue_style(
            $this->plugin_name,
            TWP_PLUGIN_URL . 'assets/css/admin.css',
            array('thickbox'),
            $this->version,
            'all'
        );
    }
    
    /**
     * Enqueue scripts
     */
    public function enqueue_scripts() {
        // Enqueue ThickBox for WordPress native modals
        wp_enqueue_script('thickbox');
        
        wp_enqueue_script(
            $this->plugin_name,
            TWP_PLUGIN_URL . 'assets/js/admin.js',
            array('jquery', 'thickbox'),
            $this->version,
            false
        );
        
        wp_localize_script(
            $this->plugin_name,
            'twp_ajax',
            array(
                'ajax_url' => admin_url('admin-ajax.php'),
                'nonce' => wp_create_nonce('twp_ajax_nonce'),
                'rest_url' => rest_url(),
                'has_elevenlabs_key' => !empty(get_option('twp_elevenlabs_api_key')),
                'timezone' => wp_timezone_string()
            )
        );
    }
    
    /**
     * AJAX handler for saving schedule
     */
    public function ajax_save_schedule() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_die('Unauthorized');
        }
        
        // Debug logging - log incoming POST data
        error_log('TWP Schedule Save: POST data: ' . print_r($_POST, true));
        
        $schedule_id = isset($_POST['schedule_id']) ? intval($_POST['schedule_id']) : 0;
        
        // Remove duplicate days and sanitize
        $days_of_week = isset($_POST['days_of_week']) ? $_POST['days_of_week'] : array();
        $unique_days = array_unique(array_map('sanitize_text_field', $days_of_week));
        
        $data = array(
            'schedule_name' => sanitize_text_field($_POST['schedule_name']),
            'days_of_week' => implode(',', $unique_days),
            'start_time' => sanitize_text_field($_POST['start_time']),
            'end_time' => sanitize_text_field($_POST['end_time']),
            'workflow_id' => isset($_POST['workflow_id']) && !empty($_POST['workflow_id']) ? intval($_POST['workflow_id']) : null,
            'holiday_dates' => isset($_POST['holiday_dates']) ? sanitize_textarea_field($_POST['holiday_dates']) : '',
            'is_active' => isset($_POST['is_active']) ? 1 : 0
        );
        
        // Add optional fields if provided
        if (!empty($_POST['phone_number'])) {
            $data['phone_number'] = sanitize_text_field($_POST['phone_number']);
        }
        
        if (!empty($_POST['forward_number'])) {
            $data['forward_number'] = sanitize_text_field($_POST['forward_number']);
        }
        
        if (!empty($_POST['after_hours_action'])) {
            $data['after_hours_action'] = sanitize_text_field($_POST['after_hours_action']);
        }
        
        if (!empty($_POST['after_hours_workflow_id'])) {
            $data['after_hours_workflow_id'] = intval($_POST['after_hours_workflow_id']);
        }
        
        if (!empty($_POST['after_hours_forward_number'])) {
            $data['after_hours_forward_number'] = sanitize_text_field($_POST['after_hours_forward_number']);
        }
        
        // Debug logging - log processed data
        error_log('TWP Schedule Save: Processed data: ' . print_r($data, true));
        error_log('TWP Schedule Save: Schedule ID: ' . $schedule_id);
        
        if ($schedule_id) {
            error_log('TWP Schedule Save: Updating existing schedule');
            $result = TWP_Scheduler::update_schedule($schedule_id, $data);
        } else {
            error_log('TWP Schedule Save: Creating new schedule');
            $result = TWP_Scheduler::create_schedule($data);
        }
        
        error_log('TWP Schedule Save: Result: ' . ($result ? 'true' : 'false'));
        
        wp_send_json_success(array('success' => $result));
    }
    
    /**
     * AJAX handler for deleting schedule
     */
    public function ajax_delete_schedule() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_die('Unauthorized');
        }
        
        $schedule_id = intval($_POST['schedule_id']);
        $result = TWP_Scheduler::delete_schedule($schedule_id);
        
        wp_send_json_success(array('success' => $result));
    }
    
    /**
     * AJAX handler for getting all schedules
     */
    public function ajax_get_schedules() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_die('Unauthorized');
        }
        
        $schedules = TWP_Scheduler::get_schedules();
        wp_send_json_success($schedules);
    }
    
    /**
     * AJAX handler for getting a single schedule
     */
    public function ajax_get_schedule() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_die('Unauthorized');
        }
        
        $schedule_id = intval($_POST['schedule_id']);
        $schedule = TWP_Scheduler::get_schedule($schedule_id);
        
        if ($schedule) {
            wp_send_json_success($schedule);
        } else {
            wp_send_json_error('Schedule not found');
        }
    }
    
    /**
     * AJAX handler for saving workflow
     */
    public function ajax_save_workflow() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_die('Unauthorized');
        }
        
        $workflow_id = isset($_POST['workflow_id']) ? intval($_POST['workflow_id']) : 0;
        
        // Parse the workflow data JSON
        $workflow_data_json = isset($_POST['workflow_data']) ? stripslashes($_POST['workflow_data']) : '{}';
        
        // Log for debugging
        error_log('TWP Workflow Save - Raw data: ' . $workflow_data_json);
        
        // Handle empty workflow data
        if (empty($workflow_data_json) || $workflow_data_json === '{}') {
            $workflow_data_parsed = array(
                'steps' => array(),
                'conditions' => array(),
                'actions' => array()
            );
        } else {
            $workflow_data_parsed = json_decode($workflow_data_json, true);
            
            if (json_last_error() !== JSON_ERROR_NONE) {
                error_log('TWP Workflow Save - JSON Error: ' . json_last_error_msg());
                wp_send_json_error('Invalid workflow data format: ' . json_last_error_msg());
                return;
            }
        }
        
        // Handle phone numbers - can be a single number (legacy) or array (new)
        $phone_numbers = array();
        if (isset($_POST['phone_numbers']) && is_array($_POST['phone_numbers'])) {
            // New multi-number format
            foreach ($_POST['phone_numbers'] as $number) {
                $number = sanitize_text_field($number);
                if (!empty($number)) {
                    $phone_numbers[] = $number;
                }
            }
        } elseif (isset($_POST['phone_number'])) {
            // Legacy single number format
            $number = sanitize_text_field($_POST['phone_number']);
            if (!empty($number)) {
                $phone_numbers[] = $number;
            }
        }
        
        $data = array(
            'workflow_name' => sanitize_text_field($_POST['workflow_name']),
            'phone_number' => isset($phone_numbers[0]) ? $phone_numbers[0] : '', // Keep first number for backward compatibility
            'steps' => isset($workflow_data_parsed['steps']) ? $workflow_data_parsed['steps'] : array(),
            'conditions' => isset($workflow_data_parsed['conditions']) ? $workflow_data_parsed['conditions'] : array(),
            'actions' => isset($workflow_data_parsed['actions']) ? $workflow_data_parsed['actions'] : array(),
            'is_active' => isset($_POST['is_active']) ? intval($_POST['is_active']) : 0,
            'workflow_data' => $workflow_data_json // Keep the raw JSON for update_workflow
        );
        
        if ($workflow_id) {
            $result = TWP_Workflow::update_workflow($workflow_id, $data);
        } else {
            $result = TWP_Workflow::create_workflow($data);
            if ($result !== false) {
                global $wpdb;
                $workflow_id = $wpdb->insert_id;
            }
        }
        
        // Save phone numbers to junction table
        if ($result !== false && !empty($phone_numbers)) {
            TWP_Workflow::set_workflow_phone_numbers($workflow_id, $phone_numbers);
        }
        
        if ($result === false) {
            wp_send_json_error('Failed to save workflow to database');
        } else {
            wp_send_json_success(array('success' => true, 'workflow_id' => $workflow_id));
        }
    }
    
    /**
     * AJAX handler for getting workflow
     */
    public function ajax_get_workflow() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_die('Unauthorized');
        }
        
        $workflow_id = intval($_POST['workflow_id']);
        $workflow = TWP_Workflow::get_workflow($workflow_id);
        
        wp_send_json_success($workflow);
    }
    
    /**
     * AJAX handler for getting workflow phone numbers
     */
    public function ajax_get_workflow_phone_numbers() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_send_json_error('Unauthorized');
            return;
        }
        
        $workflow_id = intval($_POST['workflow_id']);
        $phone_numbers = TWP_Workflow::get_workflow_phone_numbers($workflow_id);
        
        wp_send_json_success($phone_numbers);
    }
    
    /**
     * AJAX handler for deleting workflow
     */
    public function ajax_delete_workflow() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_die('Unauthorized');
        }
        
        $workflow_id = intval($_POST['workflow_id']);
        $result = TWP_Workflow::delete_workflow($workflow_id);
        
        wp_send_json_success(array('success' => $result));
    }
    
    /**
     * AJAX handler for getting phone numbers
     */
    public function ajax_get_phone_numbers() {
        // Check for either admin or frontend nonce
        if (!$this->verify_ajax_nonce()) {
            wp_send_json_error('Invalid nonce');
            return;
        }
        
        if (!current_user_can('manage_options') && !current_user_can('twp_access_phone_numbers')) {
            wp_send_json_error('Unauthorized - Phone number access required');
            return;
        }
        
        $twilio = new TWP_Twilio_API();
        $result = $twilio->get_phone_numbers();
        
        if ($result['success']) {
            wp_send_json_success($result['data']['incoming_phone_numbers']);
        } else {
            wp_send_json_error($result['error']);
        }
    }
    
    /**
     * AJAX handler for searching available phone numbers
     */
    public function ajax_search_available_numbers() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_die('Unauthorized');
        }
        
        $country_code = sanitize_text_field($_POST['country_code']);
        $area_code = sanitize_text_field($_POST['area_code']);
        $contains = sanitize_text_field($_POST['contains']);
        
        $twilio = new TWP_Twilio_API();
        $result = $twilio->search_available_numbers($country_code, $area_code, $contains);
        
        if ($result['success']) {
            wp_send_json_success($result['data']['available_phone_numbers']);
        } else {
            wp_send_json_error($result['error']);
        }
    }
    
    /**
     * AJAX handler for purchasing a phone number
     */
    public function ajax_purchase_number() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_die('Unauthorized');
        }
        
        $phone_number = sanitize_text_field($_POST['phone_number']);
        $voice_url = isset($_POST['voice_url']) ? esc_url_raw($_POST['voice_url']) : null;
        $sms_url = isset($_POST['sms_url']) ? esc_url_raw($_POST['sms_url']) : null;
        
        $twilio = new TWP_Twilio_API();
        $result = $twilio->purchase_phone_number($phone_number, $voice_url, $sms_url);
        
        wp_send_json($result);
    }
    
    /**
     * AJAX handler for configuring a phone number
     */
    public function ajax_configure_number() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_die('Unauthorized');
        }
        
        $number_sid = sanitize_text_field($_POST['number_sid']);
        $voice_url = esc_url_raw($_POST['voice_url']);
        $sms_url = esc_url_raw($_POST['sms_url']);
        
        $twilio = new TWP_Twilio_API();
        $result = $twilio->configure_phone_number($number_sid, $voice_url, $sms_url);
        
        wp_send_json($result);
    }
    
    /**
     * AJAX handler for releasing a phone number
     */
    public function ajax_release_number() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_die('Unauthorized');
        }
        
        $number_sid = sanitize_text_field($_POST['number_sid']);
        
        $twilio = new TWP_Twilio_API();
        $result = $twilio->release_phone_number($number_sid);
        
        wp_send_json($result);
    }
    
    /**
     * AJAX handler for getting queue details
     */
    public function ajax_get_queue() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_die('Unauthorized');
        }
        
        $queue_id = intval($_POST['queue_id']);
        $queue = TWP_Call_Queue::get_queue($queue_id);
        
        wp_send_json_success($queue);
    }
    
    /**
     * AJAX handler for saving queue
     */
    public function ajax_save_queue() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_die('Unauthorized');
        }
        
        $queue_id = isset($_POST['queue_id']) ? intval($_POST['queue_id']) : 0;
        
        $data = array(
            'queue_name' => sanitize_text_field($_POST['queue_name']),
            'notification_number' => sanitize_text_field($_POST['notification_number']),
            'agent_group_id' => !empty($_POST['agent_group_id']) ? intval($_POST['agent_group_id']) : null,
            'max_size' => intval($_POST['max_size']),
            'wait_music_url' => esc_url_raw($_POST['wait_music_url']),
            'tts_message' => sanitize_textarea_field($_POST['tts_message']),
            'timeout_seconds' => intval($_POST['timeout_seconds'])
        );
        
        if ($queue_id) {
            // Update existing queue
            $result = TWP_Call_Queue::update_queue($queue_id, $data);
        } else {
            // Create new queue
            $result = TWP_Call_Queue::create_queue($data);
        }
        
        wp_send_json_success(array('success' => $result));
    }
    
    /**
     * AJAX handler for getting queue details with call info
     */
    public function ajax_get_queue_details() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_die('Unauthorized');
        }
        
        $queue_id = intval($_POST['queue_id']);
        $queue = TWP_Call_Queue::get_queue($queue_id);
        
        if (!$queue) {
            wp_send_json_error('Queue not found');
        }
        
        global $wpdb;
        $calls_table = $wpdb->prefix . 'twp_queued_calls';
        
        // Get current waiting calls
        $waiting_calls = $wpdb->get_results($wpdb->prepare(
            "SELECT * FROM $calls_table WHERE queue_id = %d AND status = 'waiting' ORDER BY position ASC",
            $queue_id
        ));
        
        // Calculate average wait time
        $avg_wait = $wpdb->get_var($wpdb->prepare(
            "SELECT AVG(TIMESTAMPDIFF(SECOND, joined_at, answered_at)) 
             FROM $calls_table 
             WHERE queue_id = %d AND status = 'answered' 
             AND joined_at >= DATE_SUB(NOW(), INTERVAL 24 HOUR)",
            $queue_id
        ));
        
        $queue_status = TWP_Call_Queue::get_queue_status();
        $waiting_count = 0;
        
        foreach ($queue_status as $status) {
            if ($status['queue_id'] == $queue_id) {
                $waiting_count = $status['waiting_calls'];
                break;
            }
        }
        
        wp_send_json_success(array(
            'queue' => $queue,
            'waiting_calls' => $waiting_count,
            'avg_wait_time' => $avg_wait ? round($avg_wait) . ' seconds' : 'N/A',
            'calls' => $waiting_calls
        ));
    }
    
    /**
     * AJAX handler for getting all queues
     */
    public function ajax_get_all_queues() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_die('Unauthorized');
        }
        
        $queues = TWP_Call_Queue::get_all_queues();
        
        wp_send_json_success($queues);
    }
    
    /**
     * AJAX handler for deleting queue
     */
    public function ajax_delete_queue() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_die('Unauthorized');
        }
        
        $queue_id = intval($_POST['queue_id']);
        $result = TWP_Call_Queue::delete_queue($queue_id);
        
        wp_send_json_success(array('success' => $result));
    }
    
    /**
     * AJAX handler for dashboard stats
     */
    public function ajax_get_dashboard_stats() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_die('Unauthorized');
        }
        
        // Ensure database tables exist
        require_once TWP_PLUGIN_DIR . 'includes/class-twp-activator.php';
        $tables_exist = TWP_Activator::ensure_tables_exist();
        
        global $wpdb;
        $calls_table = $wpdb->prefix . 'twp_queued_calls';
        $log_table = $wpdb->prefix . 'twp_call_log';
        
        $active_calls = 0;
        $queued_calls = 0;
        $recent_calls = array();
        
        try {
            // Check if tables exist before querying
            $calls_table_exists = $wpdb->get_var($wpdb->prepare("SHOW TABLES LIKE %s", $calls_table));
            $log_table_exists = $wpdb->get_var($wpdb->prepare("SHOW TABLES LIKE %s", $log_table));
            
            if ($calls_table_exists) {
                // First, clean up old answered calls that might be stuck (older than 2 hours)
                $wpdb->query(
                    "UPDATE $calls_table 
                     SET status = 'completed', ended_at = NOW() 
                     WHERE status = 'answered' 
                     AND joined_at < DATE_SUB(NOW(), INTERVAL 2 HOUR)"
                );
                
                // Get active calls - only recent ones to avoid counting stuck records
                $active_calls = $wpdb->get_var(
                    "SELECT COUNT(*) FROM $calls_table 
                     WHERE status IN ('waiting', 'answered') 
                     AND joined_at >= DATE_SUB(NOW(), INTERVAL 4 HOUR)"
                );
                
                // Get queued calls
                $queued_calls = $wpdb->get_var(
                    "SELECT COUNT(*) FROM $calls_table WHERE status = 'waiting'"
                );
            }
            
            if ($log_table_exists) {
                // Get recent calls from last 24 hours with phone numbers
                $recent_calls = $wpdb->get_results(
                    "SELECT call_sid, from_number, to_number, status, duration, updated_at 
                     FROM $log_table 
                     WHERE updated_at >= DATE_SUB(NOW(), INTERVAL 24 HOUR) 
                     ORDER BY updated_at DESC 
                     LIMIT 10"
                );
            }
        } catch (Exception $e) {
            error_log('TWP Plugin Dashboard Stats Error: ' . $e->getMessage());
            // Continue with default values
        }
        
        $formatted_calls = array();
        foreach ($recent_calls as $call) {
            // Format phone numbers for display
            $from_display = $call->from_number ?: 'Unknown';
            $to_display = $call->to_number ?: 'Unknown';
            
            $formatted_calls[] = array(
                'time' => $this->format_timestamp_with_timezone($call->updated_at, 'H:i'),
                'from' => $from_display,
                'to' => $to_display,
                'status' => ucfirst($call->status),
                'duration' => $call->duration ? $call->duration . 's' : '-'
            );
        }
        
        wp_send_json_success(array(
            'active_calls' => $active_calls ?: 0,
            'queued_calls' => $queued_calls ?: 0,
            'recent_calls' => $formatted_calls
        ));
    }
    
    /**
     * AJAX handler for getting queue calls
     */
    public function ajax_get_queue_calls() {
        // Check for either admin or frontend nonce
        if (!$this->verify_ajax_nonce()) {
            wp_send_json_error('Invalid nonce');
            return;
        }
        
        // Check permissions - allow both admin and agent queue access
        if (!current_user_can('manage_options') && !current_user_can('twp_access_agent_queue')) {
            wp_send_json_error('Insufficient permissions');
            return;
        }
        
        $queue_id = intval($_POST['queue_id']);
        
        if (!$queue_id) {
            wp_send_json_error('Queue ID required');
            return;
        }
        
        global $wpdb;
        $calls = $wpdb->get_results($wpdb->prepare(
            "SELECT * FROM {$wpdb->prefix}twp_queued_calls 
             WHERE queue_id = %d AND status = 'waiting'
             ORDER BY position ASC",
            $queue_id
        ), ARRAY_A);
        
        wp_send_json_success($calls);
    }
    
    /**
     * AJAX handler for toggling agent login status
     */
    public function ajax_toggle_agent_login() {
        // Check for either admin or frontend nonce
        if (!$this->verify_ajax_nonce()) {
            wp_send_json_error('Invalid nonce');
            return;
        }
        
        // Check permissions - allow both admin and agent queue access
        if (!current_user_can('manage_options') && !current_user_can('twp_access_agent_queue')) {
            wp_send_json_error('Insufficient permissions');
            return;
        }
        
        $user_id = get_current_user_id();
        $is_logged_in = TWP_Agent_Manager::is_agent_logged_in($user_id);
        
        // Toggle the status
        TWP_Agent_Manager::set_agent_login_status($user_id, !$is_logged_in);
        
        wp_send_json_success(array(
            'logged_in' => !$is_logged_in
        ));
    }
    
    /**
     * AJAX handler for answering a queue call
     */
    public function ajax_answer_queue_call() {
        // Check for either admin or frontend nonce
        if (!$this->verify_ajax_nonce()) {
            wp_send_json_error('Invalid nonce');
            return;
        }
        
        // Check permissions - allow both admin and agent queue access
        if (!current_user_can('manage_options') && !current_user_can('twp_access_agent_queue')) {
            wp_send_json_error('Insufficient permissions');
            return;
        }
        
        $call_sid = sanitize_text_field($_POST['call_sid']);
        $queue_id = intval($_POST['queue_id']);
        $user_id = get_current_user_id();
        
        // Get agent's phone number
        $agent_phone = get_user_meta($user_id, 'twp_phone_number', true);
        
        if (!$agent_phone) {
            wp_send_json_error('Agent phone number not configured');
            return;
        }
        
        // Connect the call to the agent
        $twilio = new TWP_Twilio_API();
        $result = $twilio->update_call($call_sid, array(
            'url' => site_url('/wp-json/twilio-webhook/v1/agent-connect?agent_phone=' . urlencode($agent_phone))
        ));
        
        if ($result['success']) {
            // Update queue status
            global $wpdb;
            $wpdb->update(
                $wpdb->prefix . 'twp_queued_calls',
                array(
                    'status' => 'answered',
                    'agent_phone' => $agent_phone,
                    'answered_at' => current_time('mysql')
                ),
                array('call_sid' => $call_sid),
                array('%s', '%s', '%s'),
                array('%s')
            );
            
            wp_send_json_success();
        } else {
            wp_send_json_error($result['error']);
        }
    }
    
    /**
     * AJAX handler for monitoring a call
     */
    public function ajax_monitor_call() {
        // Check for either admin or frontend nonce
        if (!$this->verify_ajax_nonce()) {
            wp_send_json_error('Invalid nonce');
            return;
        }
        
        // Check permissions - allow both admin and agent queue access
        if (!current_user_can('manage_options') && !current_user_can('twp_access_agent_queue')) {
            wp_send_json_error('Insufficient permissions');
            return;
        }
        
        $call_sid = sanitize_text_field($_POST['call_sid']);
        $mode = sanitize_text_field($_POST['mode']); // 'listen', 'whisper', or 'barge'
        $user_id = get_current_user_id();
        
        // Get agent's phone number
        $agent_phone = get_user_meta($user_id, 'twp_phone_number', true);
        
        if (!$agent_phone) {
            wp_send_json_error('Agent phone number not configured');
            return;
        }
        
        $twilio = new TWP_Twilio_API();
        
        // Create a conference for monitoring
        $conference_name = 'monitor_' . $call_sid;
        
        // Update the call to join a conference with monitoring settings
        $result = $twilio->create_call(array(
            'to' => $agent_phone,
            'from' => get_option('twp_default_sms_number'),
            'url' => site_url('/wp-json/twilio-webhook/v1/monitor-conference?conference=' . $conference_name . '&mode=' . $mode)
        ));
        
        if ($result['success']) {
            wp_send_json_success(array(
                'conference' => $conference_name,
                'monitor_call_sid' => $result['data']['sid']
            ));
        } else {
            wp_send_json_error($result['error']);
        }
    }
    
    /**
     * AJAX handler for toggling call recording
     */
    public function ajax_toggle_call_recording() {
        // Check for either admin or frontend nonce
        if (!$this->verify_ajax_nonce()) {
            wp_send_json_error('Invalid nonce');
            return;
        }
        
        // Check permissions - allow both admin and agent queue access
        if (!current_user_can('manage_options') && !current_user_can('twp_access_agent_queue')) {
            wp_send_json_error('Insufficient permissions');
            return;
        }
        
        $call_sid = sanitize_text_field($_POST['call_sid']);
        
        $twilio = new TWP_Twilio_API();
        
        // Check if recording exists
        global $wpdb;
        $recording = $wpdb->get_row($wpdb->prepare(
            "SELECT * FROM {$wpdb->prefix}twp_call_recordings 
             WHERE call_sid = %s AND status = 'recording'",
            $call_sid
        ));
        
        if ($recording) {
            // Stop recording
            $result = $twilio->update_recording($call_sid, $recording->recording_sid, 'stopped');
            
            if ($result['success']) {
                $wpdb->update(
                    $wpdb->prefix . 'twp_call_recordings',
                    array('status' => 'completed', 'ended_at' => current_time('mysql')),
                    array('id' => $recording->id),
                    array('%s', '%s'),
                    array('%d')
                );
                
                wp_send_json_success(array('recording' => false));
            } else {
                wp_send_json_error($result['error']);
            }
        } else {
            // Start recording
            $result = $twilio->start_call_recording($call_sid);
            
            if ($result['success']) {
                $wpdb->insert(
                    $wpdb->prefix . 'twp_call_recordings',
                    array(
                        'call_sid' => $call_sid,
                        'recording_sid' => $result['data']['sid'],
                        'agent_id' => get_current_user_id(),
                        'status' => 'recording',
                        'started_at' => current_time('mysql')
                    ),
                    array('%s', '%s', '%d', '%s', '%s')
                );
                
                wp_send_json_success(array('recording' => true));
            } else {
                wp_send_json_error($result['error']);
            }
        }
    }
    
    
    /**
     * AJAX handler for sending call to voicemail
     */
    public function ajax_send_to_voicemail() {
        // Check for either admin or frontend nonce
        if (!$this->verify_ajax_nonce()) {
            wp_send_json_error('Invalid nonce');
            return;
        }
        
        // Check permissions - allow both admin and agent queue access
        if (!current_user_can('manage_options') && !current_user_can('twp_access_agent_queue')) {
            wp_send_json_error('Insufficient permissions');
            return;
        }
        
        $call_sid = sanitize_text_field($_POST['call_sid']);
        $queue_id = intval($_POST['queue_id']);
        
        // Get queue info for voicemail prompt
        global $wpdb;
        $queue = $wpdb->get_row($wpdb->prepare(
            "SELECT * FROM {$wpdb->prefix}twp_call_queues WHERE id = %d",
            $queue_id
        ));
        
        if (!$queue) {
            wp_send_json_error('Queue not found');
            return;
        }
        
        $prompt = $queue->voicemail_prompt ?: 'Please leave a message after the tone.';
        
        // Update call to voicemail
        $twilio = new TWP_Twilio_API();
        $result = $twilio->update_call($call_sid, array(
            'url' => site_url('/wp-json/twilio-webhook/v1/voicemail?prompt=' . urlencode($prompt) . '&queue_id=' . $queue_id)
        ));
        
        if ($result['success']) {
            // Remove from queue
            $wpdb->update(
                $wpdb->prefix . 'twp_queued_calls',
                array(
                    'status' => 'voicemail',
                    'ended_at' => current_time('mysql')
                ),
                array('call_sid' => $call_sid),
                array('%s', '%s'),
                array('%s')
            );
            
            wp_send_json_success();
        } else {
            wp_send_json_error($result['error']);
        }
    }
    
    /**
     * AJAX handler for disconnecting a call
     */
    public function ajax_disconnect_call() {
        // Check for either admin or frontend nonce
        if (!$this->verify_ajax_nonce()) {
            wp_send_json_error('Invalid nonce');
            return;
        }
        
        // Check permissions - allow both admin and agent queue access
        if (!current_user_can('manage_options') && !current_user_can('twp_access_agent_queue')) {
            wp_send_json_error('Insufficient permissions');
            return;
        }
        
        $call_sid = sanitize_text_field($_POST['call_sid']);
        
        $twilio = new TWP_Twilio_API();
        $result = $twilio->update_call($call_sid, array('status' => 'completed'));
        
        if ($result['success']) {
            // Update queue status
            global $wpdb;
            $wpdb->update(
                $wpdb->prefix . 'twp_queued_calls',
                array(
                    'status' => 'disconnected',
                    'ended_at' => current_time('mysql')
                ),
                array('call_sid' => $call_sid),
                array('%s', '%s'),
                array('%s')
            );
            
            wp_send_json_success();
        } else {
            wp_send_json_error($result['error']);
        }
    }
    
    /**
     * AJAX handler for getting transfer targets (agents with extensions and queues)
     */
    public function ajax_get_transfer_targets() {
        // Check for either admin or frontend nonce
        if (!$this->verify_ajax_nonce()) {
            wp_send_json_error('Invalid nonce');
            return;
        }
        
        // Check permissions - allow both admin and agent queue access
        if (!current_user_can('manage_options') && !current_user_can('twp_access_agent_queue')) {
            wp_send_json_error('Insufficient permissions');
            return;
        }
        
        global $wpdb;
        
        // Get all users with extensions
        $users_query = "
            SELECT 
                ue.user_id,
                ue.extension,
                u.display_name,
                u.user_login,
                ast.status,
                ast.is_logged_in
            FROM {$wpdb->prefix}twp_user_extensions ue
            INNER JOIN {$wpdb->users} u ON ue.user_id = u.ID
            LEFT JOIN {$wpdb->prefix}twp_agent_status ast ON ue.user_id = ast.user_id
            ORDER BY ue.extension ASC
        ";
        
        $users = $wpdb->get_results($users_query, ARRAY_A);
        
        // Format user data
        $formatted_users = array();
        foreach ($users as $user) {
            $formatted_users[] = array(
                'user_id' => $user['user_id'],
                'extension' => $user['extension'],
                'display_name' => $user['display_name'],
                'user_login' => $user['user_login'],
                'status' => $user['status'] ?: 'offline',
                'is_logged_in' => $user['is_logged_in'] == 1
            );
        }
        
        // Get general queues (not user-specific)
        $queues_query = "
            SELECT 
                q.id,
                q.queue_name,
                q.queue_type,
                COUNT(qc.id) as waiting_calls
            FROM {$wpdb->prefix}twp_call_queues q
            LEFT JOIN {$wpdb->prefix}twp_queued_calls qc ON q.id = qc.queue_id AND qc.status = 'waiting'
            WHERE q.queue_type = 'general'
            GROUP BY q.id
            ORDER BY q.queue_name ASC
        ";
        
        $queues = $wpdb->get_results($queues_query, ARRAY_A);
        
        wp_send_json_success(array(
            'users' => $formatted_users,
            'queues' => $queues
        ));
    }
    
    /**
     * AJAX handler for initializing user queues
     */
    public function ajax_initialize_user_queues() {
        // Check for either admin or frontend nonce
        if (!$this->verify_ajax_nonce()) {
            wp_send_json_error('Invalid nonce');
            return;
        }
        
        // Check permissions - allow both admin and agent queue access
        if (!current_user_can('manage_options') && !current_user_can('twp_access_agent_queue')) {
            wp_send_json_error('Insufficient permissions');
            return;
        }
        
        $user_id = get_current_user_id();
        $user_phone = get_user_meta($user_id, 'twp_phone_number', true);
        
        if (!$user_phone) {
            wp_send_json_error('Please configure your phone number in your user profile first');
            return;
        }
        
        // Create user queues
        $result = TWP_User_Queue_Manager::create_user_queues($user_id);
        
        if ($result['success']) {
            wp_send_json_success(array(
                'message' => 'User queues created successfully',
                'extension' => $result['extension'],
                'personal_queue_id' => $result['personal_queue_id'],
                'hold_queue_id' => $result['hold_queue_id']
            ));
        } else {
            wp_send_json_error($result['error']);
        }
    }
    
    /**
     * AJAX handler for getting Eleven Labs voices
     */
    public function ajax_get_elevenlabs_voices() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_die('Unauthorized');
        }
        
        $elevenlabs = new TWP_ElevenLabs_API();
        $result = $elevenlabs->get_cached_voices();
        
        if ($result['success']) {
            wp_send_json_success($result['data']['voices']);
        } else {
            $error_message = 'Failed to load voices';
            if (is_string($result['error'])) {
                $error_message = $result['error'];
            } elseif (is_array($result['error']) && isset($result['error']['detail'])) {
                $error_message = $result['error']['detail'];
            } elseif (is_array($result['error']) && isset($result['error']['error'])) {
                $error_message = $result['error']['error'];
            }
            
            // Check if it's an API key issue and provide better error messages
            if (empty(get_option('twp_elevenlabs_api_key'))) {
                $error_message = 'Please configure your ElevenLabs API key in the settings first.';
            } elseif (strpos(strtolower($error_message), 'unauthorized') !== false || 
                      strpos(strtolower($error_message), 'invalid') !== false ||
                      strpos(strtolower($error_message), '401') !== false) {
                $error_message = 'Invalid API key. Please check your ElevenLabs API key in the settings.';
            } elseif (strpos(strtolower($error_message), 'quota') !== false ||
                      strpos(strtolower($error_message), 'limit') !== false) {
                $error_message = 'API quota exceeded. Please check your ElevenLabs subscription limits.';
            } elseif (strpos(strtolower($error_message), 'network') !== false ||
                      strpos(strtolower($error_message), 'timeout') !== false ||
                      strpos(strtolower($error_message), 'connection') !== false) {
                $error_message = 'Network error connecting to ElevenLabs. Please try again later.';
            } elseif ($error_message === 'Failed to load voices') {
                // Generic error - provide more helpful message
                $api_key = get_option('twp_elevenlabs_api_key');
                if (empty($api_key)) {
                    $error_message = 'No ElevenLabs API key configured. Please add your API key in the settings.';
                } else {
                    $error_message = 'Unable to connect to ElevenLabs API. Please check your API key and internet connection.';
                }
            }
            
            wp_send_json_error($error_message);
        }
    }
    
    /**
     * AJAX handler for refreshing ElevenLabs voices (clears cache)
     */
    public function ajax_refresh_elevenlabs_voices() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_die('Unauthorized');
        }
        
        // Clear the cached voices
        delete_transient('twp_elevenlabs_voices');
        
        // Now fetch fresh voices
        $elevenlabs = new TWP_ElevenLabs_API();
        $result = $elevenlabs->get_voices(); // This will fetch from API and re-cache
        
        if ($result['success']) {
            wp_send_json_success($result['data']['voices']);
        } else {
            $error_message = 'Failed to refresh voices';
            if (is_string($result['error'])) {
                $error_message = $result['error'];
            } elseif (is_array($result['error']) && isset($result['error']['detail'])) {
                $error_message = $result['error']['detail'];
            }
            wp_send_json_error($error_message);
        }
    }
    
    /**
     * AJAX handler for getting ElevenLabs models
     */
    public function ajax_get_elevenlabs_models() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_die('Unauthorized');
        }
        
        $elevenlabs = new TWP_ElevenLabs_API();
        $result = $elevenlabs->get_cached_models();
        
        if ($result['success']) {
            wp_send_json_success($result['data']);
        } else {
            $error_message = 'Failed to load models';
            if (is_string($result['error'])) {
                $error_message = $result['error'];
            } elseif (is_array($result['error']) && isset($result['error']['detail'])) {
                $error_message = $result['error']['detail'];
            } elseif (is_array($result['error']) && isset($result['error']['error'])) {
                $error_message = $result['error']['error'];
            }
            
            // Check if it's an API key issue and provide better error messages
            if (empty(get_option('twp_elevenlabs_api_key'))) {
                $error_message = 'Please configure your ElevenLabs API key in the settings first.';
            } elseif (strpos(strtolower($error_message), 'unauthorized') !== false || 
                      strpos(strtolower($error_message), 'invalid') !== false ||
                      strpos(strtolower($error_message), '401') !== false) {
                $error_message = 'Invalid API key. Please check your ElevenLabs API key in the settings.';
            } elseif (strpos(strtolower($error_message), 'quota') !== false ||
                      strpos(strtolower($error_message), 'limit') !== false) {
                $error_message = 'API quota exceeded. Please check your ElevenLabs subscription limits.';
            } elseif (strpos(strtolower($error_message), 'network') !== false ||
                      strpos(strtolower($error_message), 'timeout') !== false ||
                      strpos(strtolower($error_message), 'connection') !== false) {
                $error_message = 'Network error connecting to ElevenLabs. Please try again later.';
            } elseif ($error_message === 'Failed to load models') {
                // Generic error - provide more helpful message
                $api_key = get_option('twp_elevenlabs_api_key');
                if (empty($api_key)) {
                    $error_message = 'No ElevenLabs API key configured. Please add your API key in the settings.';
                } else {
                    $error_message = 'Unable to connect to ElevenLabs API. Please check your API key and internet connection.';
                }
            }
            
            wp_send_json_error($error_message);
        }
    }
    
    /**
     * AJAX handler for previewing a voice
     */
    public function ajax_preview_voice() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_die('Unauthorized');
        }
        
        $voice_id = sanitize_text_field($_POST['voice_id']);
        $text = isset($_POST['text']) ? sanitize_text_field($_POST['text']) : 'Hello, this is a preview of this voice.';
        
        $elevenlabs = new TWP_ElevenLabs_API();
        $result = $elevenlabs->text_to_speech($text, $voice_id);
        
        if ($result['success']) {
            wp_send_json_success(array(
                'audio_url' => $result['file_url']
            ));
        } else {
            $error_message = 'Failed to generate voice preview';
            if (is_string($result['error'])) {
                $error_message = $result['error'];
            } elseif (is_array($result['error']) && isset($result['error']['detail'])) {
                $error_message = $result['error']['detail'];
            } elseif (is_array($result['error']) && isset($result['error']['error'])) {
                $error_message = $result['error']['error'];
            }
            
            wp_send_json_error($error_message);
        }
    }
    
    /**
     * AJAX handler to get voicemail details
     */
    public function ajax_get_voicemail() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options') && !current_user_can('twp_access_voicemails')) {
            wp_send_json_error('Unauthorized');
            return;
        }
        
        $voicemail_id = intval($_POST['voicemail_id']);
        
        if (!$voicemail_id) {
            wp_send_json_error('Invalid voicemail ID');
        }
        
        global $wpdb;
        $table_name = $wpdb->prefix . 'twp_voicemails';
        
        $voicemail = $wpdb->get_row($wpdb->prepare(
            "SELECT * FROM $table_name WHERE id = %d",
            $voicemail_id
        ));
        
        if ($voicemail) {
            wp_send_json_success($voicemail);
        } else {
            wp_send_json_error('Voicemail not found');
        }
    }
    
    /**
     * AJAX handler to delete voicemail
     */
    public function ajax_delete_voicemail() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        $voicemail_id = intval($_POST['voicemail_id']);
        
        if (!$voicemail_id) {
            wp_send_json_error('Invalid voicemail ID');
        }
        
        global $wpdb;
        $table_name = $wpdb->prefix . 'twp_voicemails';
        
        $result = $wpdb->delete(
            $table_name,
            array('id' => $voicemail_id),
            array('%d')
        );
        
        if ($result !== false) {
            wp_send_json_success('Voicemail deleted successfully');
        } else {
            wp_send_json_error('Error deleting voicemail');
        }
    }
    
    /**
     * AJAX handler to get voicemail audio URL
     */
    public function ajax_get_voicemail_audio() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options') && !current_user_can('twp_access_voicemails')) {
            wp_send_json_error('Unauthorized');
            return;
        }
        
        $voicemail_id = isset($_POST['voicemail_id']) ? intval($_POST['voicemail_id']) : 0;
        
        if (!$voicemail_id) {
            wp_send_json_error('Invalid voicemail ID');
            return;
        }
        
        global $wpdb;
        $table_name = $wpdb->prefix . 'twp_voicemails';
        
        $voicemail = $wpdb->get_row($wpdb->prepare(
            "SELECT recording_url FROM $table_name WHERE id = %d",
            $voicemail_id
        ));
        
        if (!$voicemail || !$voicemail->recording_url) {
            wp_send_json_error('Voicemail not found');
            return;
        }
        
        // Fetch the audio from Twilio using authenticated request
        $account_sid = get_option('twp_twilio_account_sid');
        $auth_token = get_option('twp_twilio_auth_token');
        
        // Add .mp3 to the URL if not present
        $audio_url = $voicemail->recording_url;
        if (strpos($audio_url, '.mp3') === false && strpos($audio_url, '.wav') === false) {
            $audio_url .= '.mp3';
        }
        
        // Log for debugging
        error_log('TWP Voicemail Audio - Fetching from: ' . $audio_url);
        
        // Fetch audio with authentication
        $response = wp_remote_get($audio_url, array(
            'headers' => array(
                'Authorization' => 'Basic ' . base64_encode($account_sid . ':' . $auth_token)
            ),
            'timeout' => 30
        ));
        
        if (is_wp_error($response)) {
            error_log('TWP Voicemail Audio - Error: ' . $response->get_error_message());
            wp_send_json_error('Unable to fetch audio: ' . $response->get_error_message());
            return;
        }
        
        $response_code = wp_remote_retrieve_response_code($response);
        if ($response_code !== 200) {
            error_log('TWP Voicemail Audio - HTTP Error: ' . $response_code);
            wp_send_json_error('Audio fetch failed with code: ' . $response_code);
            return;
        }
        
        $body = wp_remote_retrieve_body($response);
        $content_type = wp_remote_retrieve_header($response, 'content-type') ?: 'audio/mpeg';
        
        // Return audio as base64 data URL
        $base64_audio = base64_encode($body);
        $data_url = 'data:' . $content_type . ';base64,' . $base64_audio;
        
        wp_send_json_success(array(
            'audio_url' => $data_url,
            'content_type' => $content_type,
            'size' => strlen($body)
        ));
    }
    
    /**
     * AJAX handler to manually transcribe voicemail
     */
    public function ajax_transcribe_voicemail() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        $voicemail_id = intval($_POST['voicemail_id']);
        
        if (!$voicemail_id) {
            wp_send_json_error('Invalid voicemail ID');
        }
        
        global $wpdb;
        $table_name = $wpdb->prefix . 'twp_voicemails';
        
        $voicemail = $wpdb->get_row($wpdb->prepare(
            "SELECT * FROM $table_name WHERE id = %d",
            $voicemail_id
        ));
        
        if (!$voicemail) {
            wp_send_json_error('Voicemail not found');
        }
        
        // Check if voicemail already has a transcription
        if (!empty($voicemail->transcription) && $voicemail->transcription !== 'Transcription pending...') {
            wp_send_json_success(array(
                'message' => 'Transcription already exists',
                'transcription' => $voicemail->transcription
            ));
            return;
        }
        
        // Try to request transcription from Twilio
        if (!empty($voicemail->recording_url)) {
            try {
                $api = new TWP_Twilio_API();
                $client = $api->get_client();
                
                // Extract recording SID from URL
                preg_match('/Recordings\/([A-Za-z0-9]+)/', $voicemail->recording_url, $matches);
                $recording_sid = $matches[1] ?? '';
                
                if ($recording_sid) {
                    // Create transcription request
                    $transcription = $client->transcriptions->create($recording_sid);
                    
                    // Update status to pending
                    $wpdb->update(
                        $table_name,
                        array('transcription' => 'Transcription in progress...'),
                        array('id' => $voicemail_id),
                        array('%s'),
                        array('%d')
                    );
                    
                    wp_send_json_success(array(
                        'message' => 'Transcription requested successfully',
                        'transcription' => 'Transcription in progress...'
                    ));
                    return;
                }
            } catch (Exception $e) {
                error_log('TWP Transcription Error: ' . $e->getMessage());
            }
        }
        
        // Fallback - manual transcription not available
        wp_send_json_error(array(
            'message' => 'Unable to request transcription. Automatic transcription should occur when voicemails are recorded.'
        ));
    }
    
    /**
     * AJAX handler for getting user's recent voicemails
     */
    public function ajax_get_user_voicemails() {
        check_ajax_referer('twp_frontend_nonce', 'nonce');
        
        if (!current_user_can('manage_options') && !current_user_can('twp_access_voicemails')) {
            wp_send_json_error('Unauthorized');
            return;
        }
        
        global $wpdb;
        $table_name = $wpdb->prefix . 'twp_voicemails';
        
        // Get recent voicemails (last 10)
        $voicemails = $wpdb->get_results($wpdb->prepare("
            SELECT id, from_number, duration, transcription, created_at, recording_url
            FROM $table_name 
            ORDER BY created_at DESC 
            LIMIT %d
        ", 10));
        
        // Format data for frontend
        $formatted_voicemails = array();
        foreach ($voicemails as $vm) {
            $formatted_voicemails[] = array(
                'id' => $vm->id,
                'from_number' => $vm->from_number,
                'duration' => $vm->duration,
                'transcription' => $vm->transcription ? substr($vm->transcription, 0, 100) . '...' : 'No transcription',
                'created_at' => $vm->created_at,
                'time_ago' => human_time_diff(strtotime($vm->created_at), current_time('timestamp')) . ' ago',
                'has_recording' => !empty($vm->recording_url)
            );
        }
        
        // Get voicemail counts
        $total_count = $wpdb->get_var("SELECT COUNT(*) FROM $table_name");
        $today_count = $wpdb->get_var($wpdb->prepare("
            SELECT COUNT(*) FROM $table_name 
            WHERE DATE(created_at) = %s
        ", current_time('Y-m-d')));
        
        wp_send_json_success(array(
            'voicemails' => $formatted_voicemails,
            'total_count' => $total_count,
            'today_count' => $today_count
        ));
    }
    
    /**
     * AJAX handler for getting all groups
     */
    public function ajax_get_all_groups() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_die('Unauthorized');
        }
        
        $groups = TWP_Agent_Groups::get_all_groups();
        wp_send_json_success($groups);
    }
    
    /**
     * AJAX handler for getting a group
     */
    public function ajax_get_group() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_die('Unauthorized');
        }
        
        $group_id = intval($_POST['group_id']);
        $group = TWP_Agent_Groups::get_group($group_id);
        
        wp_send_json_success($group);
    }
    
    /**
     * AJAX handler for saving a group
     */
    public function ajax_save_group() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_die('Unauthorized');
        }
        
        $group_id = isset($_POST['group_id']) ? intval($_POST['group_id']) : 0;
        
        $data = array(
            'group_name' => sanitize_text_field($_POST['group_name']),
            'description' => sanitize_textarea_field($_POST['description']),
            'ring_strategy' => sanitize_text_field($_POST['ring_strategy'] ?? 'simultaneous'),
            'timeout_seconds' => intval($_POST['timeout_seconds'] ?? 30)
        );
        
        if ($group_id) {
            $result = TWP_Agent_Groups::update_group($group_id, $data);
        } else {
            $result = TWP_Agent_Groups::create_group($data);
        }
        
        wp_send_json_success(array('success' => $result !== false, 'group_id' => $result));
    }
    
    /**
     * AJAX handler for deleting a group
     */
    public function ajax_delete_group() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_die('Unauthorized');
        }
        
        $group_id = intval($_POST['group_id']);
        $result = TWP_Agent_Groups::delete_group($group_id);
        
        wp_send_json_success(array('success' => $result));
    }
    
    /**
     * AJAX handler for getting group members
     */
    public function ajax_get_group_members() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_die('Unauthorized');
        }
        
        $group_id = intval($_POST['group_id']);
        $members = TWP_Agent_Groups::get_group_members($group_id);
        
        wp_send_json_success($members);
    }
    
    /**
     * AJAX handler for adding a group member
     */
    public function ajax_add_group_member() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_die('Unauthorized');
        }
        
        $group_id = intval($_POST['group_id']);
        $user_id = intval($_POST['user_id']);
        $priority = intval($_POST['priority'] ?? 0);
        
        $result = TWP_Agent_Groups::add_member($group_id, $user_id, $priority);
        
        wp_send_json_success(array('success' => $result));
    }
    
    /**
     * AJAX handler for removing a group member
     */
    public function ajax_remove_group_member() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_die('Unauthorized');
        }
        
        $group_id = intval($_POST['group_id']);
        $user_id = intval($_POST['user_id']);
        
        $result = TWP_Agent_Groups::remove_member($group_id, $user_id);
        
        wp_send_json_success(array('success' => $result));
    }
    
    /**
     * AJAX handler for accepting a call
     */
    public function ajax_accept_call() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        $call_id = intval($_POST['call_id']);
        $user_id = get_current_user_id();
        
        $result = TWP_Agent_Manager::accept_queued_call($call_id, $user_id);
        
        if ($result['success']) {
            wp_send_json_success($result);
        } else {
            wp_send_json_error($result['error']);
        }
    }
    
    /**
     * AJAX handler for accepting next call from a queue
     */
    public function ajax_accept_next_queue_call() {
        // Check for either admin or frontend nonce
        if (!$this->verify_ajax_nonce()) {
            wp_send_json_error('Invalid nonce');
            return;
        }
        
        $queue_id = intval($_POST['queue_id']);
        $user_id = get_current_user_id();
        
        global $wpdb;
        $calls_table = $wpdb->prefix . 'twp_queued_calls';
        $groups_table = $wpdb->prefix . 'twp_group_members';
        $queues_table = $wpdb->prefix . 'twp_call_queues';
        
        // Check if this is a user's personal or hold queue first
        $queue_info = $wpdb->get_row($wpdb->prepare("
            SELECT * FROM $queues_table WHERE id = %d
        ", $queue_id));
        
        $is_authorized = false;
        
        // Check if it's the user's own personal or hold queue
        if ($queue_info && $queue_info->user_id == $user_id && 
            ($queue_info->queue_type == 'personal' || $queue_info->queue_type == 'hold')) {
            $is_authorized = true;
            error_log("TWP: User {$user_id} authorized for their own {$queue_info->queue_type} queue {$queue_id}");
        } else {
            // For regular queues, verify user is a member of this queue's agent group
            $is_member = $wpdb->get_var($wpdb->prepare("
                SELECT COUNT(*)
                FROM $groups_table gm
                JOIN $queues_table q ON gm.group_id = q.agent_group_id
                WHERE gm.user_id = %d AND q.id = %d
            ", $user_id, $queue_id));
            
            if ($is_member) {
                $is_authorized = true;
            }
        }
        
        if (!$is_authorized) {
            wp_send_json_error('You are not authorized to accept calls from this queue');
            return;
        }
        
        // Get the next waiting call from this queue (lowest position number)
        $next_call = $wpdb->get_row($wpdb->prepare("
            SELECT * FROM $calls_table 
            WHERE queue_id = %d AND status = 'waiting'
            ORDER BY position ASC
            LIMIT 1
        ", $queue_id));
        
        if (!$next_call) {
            wp_send_json_error('No calls waiting in this queue');
            return;
        }
        
        $result = TWP_Agent_Manager::accept_queued_call($next_call->id, $user_id);
        
        if ($result['success']) {
            wp_send_json_success($result);
        } else {
            wp_send_json_error($result['error']);
        }
    }
    
    /**
     * AJAX handler for getting waiting calls
     */
    public function ajax_get_waiting_calls() {
        // Check for either admin or frontend nonce
        if (!$this->verify_ajax_nonce()) {
            wp_send_json_error('Invalid nonce');
            return;
        }
        
        global $wpdb;
        $calls_table = $wpdb->prefix . 'twp_queued_calls';
        $queues_table = $wpdb->prefix . 'twp_call_queues';
        $groups_table = $wpdb->prefix . 'twp_group_members';
        
        $user_id = get_current_user_id();
        
        // Get waiting calls only from queues the user is a member of
        $waiting_calls = $wpdb->get_results($wpdb->prepare("
            SELECT 
                c.*,
                q.queue_name,
                TIMESTAMPDIFF(SECOND, c.joined_at, NOW()) as wait_seconds
            FROM $calls_table c
            JOIN $queues_table q ON c.queue_id = q.id
            JOIN $groups_table gm ON gm.group_id = q.agent_group_id
            WHERE c.status = 'waiting' AND gm.user_id = %d
            ORDER BY c.position ASC
        ", $user_id));
        
        wp_send_json_success($waiting_calls);
    }
    
    /**
     * AJAX handler for getting agent's assigned queues
     */
    public function ajax_get_agent_queues() {
        // Check for either admin or frontend nonce
        if (!$this->verify_ajax_nonce()) {
            wp_send_json_error('Invalid nonce');
            return;
        }
        
        if (!current_user_can('manage_options') && !current_user_can('twp_access_agent_queue')) {
            wp_send_json_error('Unauthorized - Agent queue access required');
            return;
        }
        
        global $wpdb;
        $user_id = get_current_user_id();
        $queues_table = $wpdb->prefix . 'twp_call_queues';
        $groups_table = $wpdb->prefix . 'twp_group_members';
        $calls_table = $wpdb->prefix . 'twp_queued_calls';
        
        // Auto-create personal queues if they don't exist
        $extensions_table = $wpdb->prefix . 'twp_user_extensions';
        $existing_extension = $wpdb->get_row($wpdb->prepare(
            "SELECT extension FROM $extensions_table WHERE user_id = %d",
            $user_id
        ));
        
        if (!$existing_extension) {
            TWP_User_Queue_Manager::create_user_queues($user_id);
        }
        
        // Get queues where user is a member of the assigned agent group OR personal/hold queues
        $user_queues = $wpdb->get_results($wpdb->prepare("
            SELECT DISTINCT q.*, 
                   COUNT(c.id) as waiting_count,
                   COALESCE(SUM(CASE WHEN c.status = 'waiting' THEN 1 ELSE 0 END), 0) as current_waiting
            FROM $queues_table q
            LEFT JOIN $groups_table gm ON gm.group_id = q.agent_group_id
            LEFT JOIN $calls_table c ON c.queue_id = q.id AND c.status = 'waiting'
            WHERE (gm.user_id = %d AND gm.is_active = 1) 
               OR (q.user_id = %d AND q.queue_type IN ('personal', 'hold'))
            GROUP BY q.id
            ORDER BY 
                CASE 
                    WHEN q.queue_type = 'personal' THEN 1
                    WHEN q.queue_type = 'hold' THEN 2 
                    ELSE 3 
                END, 
                q.queue_name ASC
        ", $user_id, $user_id));
        
        wp_send_json_success($user_queues);
    }
    
    /**
     * AJAX handler for getting all queues for requeue operations (frontend-safe)
     */
    public function ajax_get_requeue_queues() {
        // Check for either admin or frontend nonce
        if (!$this->verify_ajax_nonce()) {
            wp_send_json_error('Invalid nonce');
            return;
        }
        
        // Only require user to be logged in, not specific capabilities
        if (!is_user_logged_in()) {
            wp_send_json_error('Must be logged in');
            return;
        }
        
        // Get all queues (same as ajax_get_all_queues but with relaxed permissions)
        $queues = TWP_Call_Queue::get_all_queues();
        
        wp_send_json_success($queues);
    }
    
    /**
     * AJAX handler for setting agent status
     */
    public function ajax_set_agent_status() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        $user_id = get_current_user_id();
        $status = sanitize_text_field($_POST['status']);
        
        $result = TWP_Agent_Manager::set_agent_status($user_id, $status);
        
        wp_send_json_success(array('success' => $result));
    }
    
    /**
     * AJAX handler for getting call details
     */
    public function ajax_get_call_details() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!isset($_POST['call_sid'])) {
            wp_send_json_error('Call SID is required');
        }
        
        $call_sid = sanitize_text_field($_POST['call_sid']);
        
        global $wpdb;
        $table_name = $wpdb->prefix . 'twp_call_log';
        
        $call = $wpdb->get_row($wpdb->prepare(
            "SELECT * FROM $table_name WHERE call_sid = %s",
            $call_sid
        ));
        
        if ($call) {
            // Parse actions_taken if it's JSON
            if ($call->actions_taken && is_string($call->actions_taken)) {
                $decoded = json_decode($call->actions_taken, true);
                if ($decoded) {
                    $call->actions_taken = json_encode($decoded, JSON_PRETTY_PRINT);
                }
            }
            
            wp_send_json_success($call);
        } else {
            wp_send_json_error('Call not found');
        }
    }
    
    /**
     * AJAX handler for requesting callback
     */
    public function ajax_request_callback() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        $phone_number = sanitize_text_field($_POST['phone_number']);
        $queue_id = isset($_POST['queue_id']) ? intval($_POST['queue_id']) : null;
        $call_sid = isset($_POST['call_sid']) ? sanitize_text_field($_POST['call_sid']) : null;
        
        if (empty($phone_number)) {
            wp_send_json_error(array('message' => 'Phone number is required'));
        }
        
        $callback_id = TWP_Callback_Manager::request_callback($phone_number, $queue_id, $call_sid);
        
        if ($callback_id) {
            wp_send_json_success(array(
                'callback_id' => $callback_id,
                'message' => 'Callback requested successfully'
            ));
        } else {
            wp_send_json_error(array('message' => 'Failed to request callback'));
        }
    }
    
    /**
     * AJAX handler for initiating outbound calls
     */
    public function ajax_initiate_outbound_call() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        $to_number = sanitize_text_field($_POST['to_number']);
        $agent_user_id = get_current_user_id();
        
        if (empty($to_number)) {
            wp_send_json_error(array('message' => 'Phone number is required'));
        }
        
        $result = TWP_Callback_Manager::initiate_outbound_call($to_number, $agent_user_id);
        
        if ($result['success']) {
            wp_send_json_success(array(
                'call_sid' => $result['call_sid'],
                'message' => 'Outbound call initiated successfully'
            ));
        } else {
            wp_send_json_error(array('message' => $result['error']));
        }
    }
    
    /**
     * AJAX handler for getting pending callbacks
     */
    public function ajax_get_callbacks() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        $pending_callbacks = TWP_Callback_Manager::get_pending_callbacks();
        $callback_stats = TWP_Callback_Manager::get_callback_stats();
        
        wp_send_json_success(array(
            'callbacks' => $pending_callbacks,
            'stats' => $callback_stats
        ));
    }
    
    /**
     * AJAX handler for updating phone numbers with status callbacks
     */
    public function ajax_update_phone_status_callbacks() {
        check_ajax_referer('twp_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_send_json_error('Insufficient permissions');
        }
        
        try {
            $twilio = new TWP_Twilio_API();
            $result = $twilio->enable_status_callbacks_for_all_numbers();
            
            if ($result['success']) {
                wp_send_json_success($result['data']);
            } else {
                wp_send_json_error($result['error']);
            }
        } catch (Exception $e) {
            wp_send_json_error('Failed to update phone numbers: ' . $e->getMessage());
        }
    }
    
    /**
     * AJAX handler for toggling individual phone number status callbacks
     */
    public function ajax_toggle_number_status_callback() {
        check_ajax_referer('twp_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_send_json_error('Insufficient permissions');
        }
        
        $sid = isset($_POST['sid']) ? sanitize_text_field($_POST['sid']) : '';
        $enable = isset($_POST['enable']) ? $_POST['enable'] === 'true' : false;
        
        if (empty($sid)) {
            wp_send_json_error('Phone number SID is required');
        }
        
        try {
            $twilio = new TWP_Twilio_API();
            $result = $twilio->toggle_number_status_callback($sid, $enable);
            
            if ($result['success']) {
                wp_send_json_success($result['data']);
            } else {
                wp_send_json_error($result['error']);
            }
        } catch (Exception $e) {
            wp_send_json_error('Failed to update phone number: ' . $e->getMessage());
        }
    }
    
    /**
     * AJAX handler for generating capability tokens for Browser Phone
     */
    public function ajax_generate_capability_token() {
        // Check for either admin or frontend nonce
        if (!$this->verify_ajax_nonce()) {
            wp_send_json_error('Invalid nonce');
            return;
        }
        
        if (!current_user_can('manage_options') && !current_user_can('twp_access_browser_phone')) {
            wp_send_json_error('Insufficient permissions');
        }
        
        try {
            $twilio = new TWP_Twilio_API();
            $result = $twilio->generate_capability_token();
            
            if ($result['success']) {
                wp_send_json_success($result['data']);
            } else {
                wp_send_json_error($result['error']);
            }
        } catch (Exception $e) {
            wp_send_json_error('Failed to generate capability token: ' . $e->getMessage());
        }
    }
    
    /**
     * AJAX handler for saving user's call mode preference
     */
    public function ajax_save_call_mode() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('read')) {
            wp_send_json_error('Insufficient permissions');
        }
        
        $mode = isset($_POST['mode']) ? sanitize_text_field($_POST['mode']) : '';
        
        if (!in_array($mode, ['browser', 'cell'])) {
            wp_send_json_error('Invalid mode');
        }
        
        $user_id = get_current_user_id();
        $updated = update_user_meta($user_id, 'twp_call_mode', $mode);
        
        if ($updated !== false) {
            wp_send_json_success([
                'mode' => $mode,
                'message' => 'Call mode updated successfully'
            ]);
        } else {
            wp_send_json_error('Failed to update call mode');
        }
    }
    
    /**
     * AJAX handler for auto-configuring TwiML App for browser phone
     */
    public function ajax_auto_configure_twiml_app() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_send_json_error('Insufficient permissions');
        }
        
        $enable_smart_routing = isset($_POST['enable_smart_routing']) && $_POST['enable_smart_routing'] === 'true';
        $selected_numbers = isset($_POST['selected_numbers']) ? json_decode(stripslashes($_POST['selected_numbers']), true) : [];
        
        try {
            $result = $this->auto_configure_browser_phone($enable_smart_routing, $selected_numbers);
            
            if ($result['success']) {
                wp_send_json_success($result['data']);
            } else {
                wp_send_json_error($result['error']);
            }
        } catch (Exception $e) {
            wp_send_json_error('Failed to auto-configure: ' . $e->getMessage());
        }
    }
    
    /**
     * Auto-configure browser phone by creating TwiML App and setting up webhooks
     */
    private function auto_configure_browser_phone($enable_smart_routing = true, $selected_numbers = []) {
        $twilio = new TWP_Twilio_API();
        $client = $twilio->get_client();
        
        if (!$client) {
            return [
                'success' => false,
                'error' => 'Twilio client not initialized. Please check your credentials.'
            ];
        }
        
        $steps_completed = [];
        $warnings = [];
        
        try {
            // Step 1: Check if TwiML App already exists
            $current_app_sid = get_option('twp_twiml_app_sid');
            $app_sid = null;
            
            if ($current_app_sid) {
                // Try to fetch existing app to verify it exists
                try {
                    $existing_app = $client->applications($current_app_sid)->fetch();
                    $app_sid = $existing_app->sid;
                    $steps_completed[] = 'Found existing TwiML App: ' . $existing_app->friendlyName;
                } catch (Exception $e) {
                    $warnings[] = 'Existing TwiML App SID is invalid, creating new one';
                    $current_app_sid = null;
                }
            }
            
            // Step 2: Create TwiML App if needed
            if (!$app_sid) {
                $voice_url = home_url('/wp-json/twilio-webhook/v1/browser-voice');
                $fallback_url = home_url('/wp-json/twilio-webhook/v1/browser-fallback');
                
                $app = $client->applications->create([
                    'friendlyName' => 'Browser Phone App - ' . get_bloginfo('name'),
                    'voiceUrl' => $voice_url,
                    'voiceMethod' => 'POST',
                    'voiceFallbackUrl' => $fallback_url,
                    'voiceFallbackMethod' => 'POST'
                ]);
                
                $app_sid = $app->sid;
                $steps_completed[] = 'Created new TwiML App: ' . $app->friendlyName;
            }
            
            // Step 3: Save TwiML App SID to WordPress
            update_option('twp_twiml_app_sid', $app_sid);
            $steps_completed[] = 'Saved TwiML App SID to WordPress settings';
            
            // Step 4: Test capability token generation
            $token_result = $twilio->generate_capability_token();
            if ($token_result['success']) {
                $steps_completed[] = 'Successfully generated test capability token';
            } else {
                $warnings[] = 'Capability token generation failed: ' . $token_result['error'];
            }
            
            // Step 5: Update phone numbers with appropriate webhook URLs
            $phone_result = $this->auto_configure_phone_numbers_for_browser($enable_smart_routing, $selected_numbers);
            if ($phone_result['updated_count'] > 0) {
                $webhook_type = $enable_smart_routing ? 'smart routing' : 'browser voice';
                $steps_completed[] = 'Updated ' . $phone_result['updated_count'] . ' phone numbers with ' . $webhook_type . ' webhooks';
            }
            if ($phone_result['skipped_count'] > 0) {
                $steps_completed[] = 'Skipped ' . $phone_result['skipped_count'] . ' phone numbers (not selected)';
            }
            if (!empty($phone_result['warnings'])) {
                $warnings = array_merge($warnings, $phone_result['warnings']);
            }
            
            return [
                'success' => true,
                'data' => [
                    'app_sid' => $app_sid,
                    'steps_completed' => $steps_completed,
                    'warnings' => $warnings,
                    'voice_url' => home_url('/wp-json/twilio-webhook/v1/browser-voice'),
                    'message' => 'Browser phone auto-configuration completed successfully!'
                ]
            ];
            
        } catch (Exception $e) {
            return [
                'success' => false,
                'error' => 'Auto-configuration failed: ' . $e->getMessage()
            ];
        }
    }
    
    /**
     * Auto-configure phone numbers with browser webhooks (optional)
     */
    private function auto_configure_phone_numbers_for_browser($enable_smart_routing = true, $selected_numbers = []) {
        $twilio = new TWP_Twilio_API();
        $phone_numbers = $twilio->get_phone_numbers();
        
        $updated_count = 0;
        $skipped_count = 0;
        $warnings = [];
        
        if (!$phone_numbers['success']) {
            return [
                'updated_count' => 0,
                'skipped_count' => 0,
                'warnings' => ['Could not retrieve phone numbers: ' . $phone_numbers['error']]
            ];
        }
        
        // Create a map of selected number SIDs for quick lookup
        $selected_sids = [];
        if (!empty($selected_numbers)) {
            foreach ($selected_numbers as $selected) {
                $selected_sids[$selected['sid']] = true;
            }
        }
        
        $smart_routing_url = home_url('/wp-json/twilio-webhook/v1/smart-routing');
        $browser_voice_url = home_url('/wp-json/twilio-webhook/v1/browser-voice');
        $target_url = $enable_smart_routing ? $smart_routing_url : $browser_voice_url;
        
        foreach ($phone_numbers['data']['incoming_phone_numbers'] as $number) {
            // Skip if number is not selected (when selection is provided)
            if (!empty($selected_numbers) && !isset($selected_sids[$number['sid']])) {
                $skipped_count++;
                error_log('TWP: Skipping phone number ' . $number['phone_number'] . ' (not selected)');
                continue;
            }
            
            try {
                // Only update if not already using the target URL
                if ($number['voice_url'] !== $target_url) {
                    $client = $twilio->get_client();
                    $client->incomingPhoneNumbers($number['sid'])->update([
                        'voiceUrl' => $target_url,
                        'voiceMethod' => 'POST'
                    ]);
                    $updated_count++;
                    error_log('TWP: Updated phone number ' . $number['phone_number'] . ' to use ' . $target_url);
                }
            } catch (Exception $e) {
                $warnings[] = 'Failed to update ' . $number['phone_number'] . ': ' . $e->getMessage();
            }
        }
        
        return [
            'updated_count' => $updated_count,
            'skipped_count' => $skipped_count,
            'warnings' => $warnings
        ];
    }
    
    /**
     * AJAX handler for configuring phone numbers only
     */
    public function ajax_configure_phone_numbers_only() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_send_json_error('Insufficient permissions');
        }
        
        $enable_smart_routing = isset($_POST['enable_smart_routing']) && $_POST['enable_smart_routing'] === 'true';
        $selected_numbers = isset($_POST['selected_numbers']) ? json_decode(stripslashes($_POST['selected_numbers']), true) : [];
        
        try {
            $result = $this->configure_phone_numbers_only($enable_smart_routing, $selected_numbers);
            
            if ($result['success']) {
                wp_send_json_success($result['data']);
            } else {
                wp_send_json_error($result['error']);
            }
        } catch (Exception $e) {
            wp_send_json_error('Failed to configure phone numbers: ' . $e->getMessage());
        }
    }
    
    /**
     * Configure phone numbers only (no TwiML App creation)
     */
    private function configure_phone_numbers_only($enable_smart_routing = true, $selected_numbers = []) {
        $twilio = new TWP_Twilio_API();
        $client = $twilio->get_client();
        
        if (!$client) {
            return [
                'success' => false,
                'error' => 'Twilio client not initialized. Please check your credentials.'
            ];
        }
        
        $steps_completed = [];
        $warnings = [];
        
        try {
            // Configure phone numbers
            $phone_result = $this->auto_configure_phone_numbers_for_browser($enable_smart_routing, $selected_numbers);
            
            if ($phone_result['updated_count'] > 0) {
                $webhook_type = $enable_smart_routing ? 'smart routing' : 'browser voice';
                $steps_completed[] = 'Updated ' . $phone_result['updated_count'] . ' phone numbers with ' . $webhook_type . ' webhooks';
            } else {
                $steps_completed[] = 'All selected phone numbers already configured correctly';
            }
            
            if ($phone_result['skipped_count'] > 0) {
                $steps_completed[] = 'Skipped ' . $phone_result['skipped_count'] . ' phone numbers (not selected)';
            }
            
            if (!empty($phone_result['warnings'])) {
                $warnings = array_merge($warnings, $phone_result['warnings']);
            }
            
            // If smart routing is enabled, verify TwiML App exists
            if ($enable_smart_routing) {
                $app_sid = get_option('twp_twiml_app_sid');
                if (empty($app_sid)) {
                    $warnings[] = 'Smart routing enabled but no TwiML App SID configured. You may need to run full auto-configuration.';
                } else {
                    // Test if the app exists
                    try {
                        $client->applications($app_sid)->fetch();
                        $steps_completed[] = 'Verified TwiML App exists for smart routing';
                    } catch (Exception $e) {
                        $warnings[] = 'TwiML App SID is invalid. Smart routing may not work properly.';
                    }
                }
            }
            
            $webhook_url = $enable_smart_routing ? 
                home_url('/wp-json/twilio-webhook/v1/smart-routing') : 
                home_url('/wp-json/twilio-webhook/v1/browser-voice');
            
            return [
                'success' => true,
                'data' => [
                    'steps_completed' => $steps_completed,
                    'warnings' => $warnings,
                    'webhook_url' => $webhook_url,
                    'routing_type' => $enable_smart_routing ? 'Smart Routing' : 'Direct Browser',
                    'message' => 'Phone number configuration completed successfully!'
                ]
            ];
            
        } catch (Exception $e) {
            return [
                'success' => false,
                'error' => 'Phone number configuration failed: ' . $e->getMessage()
            ];
        }
    }
    
    /**
     * AJAX handler for initiating outbound calls with from number
     */
    public function ajax_initiate_outbound_call_with_from() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        $from_number = sanitize_text_field($_POST['from_number']);
        $to_number = sanitize_text_field($_POST['to_number']);
        $agent_phone = sanitize_text_field($_POST['agent_phone']);
        
        if (empty($from_number) || empty($to_number) || empty($agent_phone)) {
            wp_send_json_error(array('message' => 'All fields are required'));
        }
        
        // Validate phone numbers
        if (!preg_match('/^\+?[1-9]\d{1,14}$/', str_replace([' ', '-', '(', ')'], '', $to_number))) {
            wp_send_json_error(array('message' => 'Invalid destination phone number format'));
        }
        
        if (!preg_match('/^\+?[1-9]\d{1,14}$/', str_replace([' ', '-', '(', ')'], '', $agent_phone))) {
            wp_send_json_error(array('message' => 'Invalid agent phone number format'));
        }
        
        $result = $this->initiate_outbound_call_with_from($from_number, $to_number, $agent_phone);
        
        if ($result['success']) {
            wp_send_json_success(array(
                'call_sid' => $result['call_sid'],
                'message' => 'Outbound call initiated successfully'
            ));
        } else {
            wp_send_json_error(array('message' => $result['error']));
        }
    }
    
    /**
     * Initiate outbound call with specific from number
     */
    private function initiate_outbound_call_with_from($from_number, $to_number, $agent_phone) {
        $twilio = new TWP_Twilio_API();
        
        // Build webhook URL with parameters
        $webhook_url = home_url('/wp-json/twilio-webhook/v1/outbound-agent-with-from') . '?' . http_build_query(array(
            'target_number' => $to_number,
            'agent_user_id' => get_current_user_id(),
            'from_number' => $from_number
        ));
        
        // First call the agent
        $agent_call_result = $twilio->make_call(
            $agent_phone,
            $webhook_url,
            null, // No status callback needed for this
            $from_number // Use specified from number
        );
        
        if ($agent_call_result['success']) {
            $call_sid = isset($agent_call_result['data']['sid']) ? $agent_call_result['data']['sid'] : null;
            
            // Set agent to busy
            TWP_Agent_Manager::set_agent_status(get_current_user_id(), 'busy', $call_sid, true);
            
            // Log the outbound call
            TWP_Call_Logger::log_call(array(
                'call_sid' => $call_sid,
                'from_number' => $from_number,
                'to_number' => $to_number,
                'status' => 'outbound_initiated',
                'workflow_name' => 'Outbound Call',
                'actions_taken' => json_encode(array(
                    'agent_id' => get_current_user_id(),
                    'agent_name' => wp_get_current_user()->display_name,
                    'type' => 'click_to_call_with_from',
                    'agent_phone' => $agent_phone
                ))
            ));
            
            return array('success' => true, 'call_sid' => $call_sid);
        }
        
        return array('success' => false, 'error' => $agent_call_result['error']);
    }
    
    /**
     * Display SMS Inbox page
     */
    public function display_sms_inbox_page() {
        global $wpdb;
        $table_name = $wpdb->prefix . 'twp_sms_log';
        
        // Get our Twilio numbers first
        $twilio_numbers = [];
        try {
            $twilio_api = new TWP_Twilio_API();
            $numbers_result = $twilio_api->get_phone_numbers();
            if ($numbers_result['success'] && !empty($numbers_result['data']['incoming_phone_numbers'])) {
                foreach ($numbers_result['data']['incoming_phone_numbers'] as $number) {
                    $twilio_numbers[] = $number['phone_number'];
                }
            }
        } catch (Exception $e) {
            error_log('Failed to get Twilio numbers: ' . $e->getMessage());
        }
        
        // Build the NOT IN clause for Twilio numbers
        $twilio_numbers_placeholders = !empty($twilio_numbers) ? 
            implode(',', array_fill(0, count($twilio_numbers), '%s')) : 
            "'dummy_number_that_wont_match'";
        
        // Get unique conversations (group by customer phone number)
        // Customer number is the one that's NOT in our Twilio numbers list
        $query = $wpdb->prepare(
            "SELECT 
                customer_number,
                business_number,
                MAX(last_message_time) as last_message_time,
                SUM(message_count) as message_count,
                MAX(last_message) as last_message,
                MAX(last_direction) as last_message_direction
             FROM (
                SELECT 
                    from_number as customer_number,
                    to_number as business_number,
                    MAX(received_at) as last_message_time,
                    COUNT(*) as message_count,
                    (SELECT body FROM $table_name t2 
                     WHERE t2.from_number = t1.from_number AND t2.to_number = t1.to_number
                     ORDER BY t2.received_at DESC LIMIT 1) as last_message,
                    'incoming' as last_direction
                FROM $table_name t1
                WHERE from_number NOT IN ($twilio_numbers_placeholders)
                  AND body NOT IN ('1', 'status', 'help')
                GROUP BY from_number, to_number
                
                UNION ALL
                
                SELECT 
                    to_number as customer_number,
                    from_number as business_number,
                    MAX(received_at) as last_message_time,
                    COUNT(*) as message_count,
                    (SELECT body FROM $table_name t3 
                     WHERE t3.to_number = t1.to_number AND t3.from_number = t1.from_number
                     ORDER BY t3.received_at DESC LIMIT 1) as last_message,
                    'outgoing' as last_direction
                FROM $table_name t1
                WHERE to_number NOT IN ($twilio_numbers_placeholders)
                  AND from_number IN ($twilio_numbers_placeholders)
                GROUP BY to_number, from_number
             ) as conversations
             GROUP BY customer_number
             ORDER BY last_message_time DESC
             LIMIT 50",
            ...$twilio_numbers,
            ...$twilio_numbers,
            ...$twilio_numbers
        );
        
        $conversations = $wpdb->get_results($query);
        ?>
        <div class="wrap">
            <h1>SMS Inbox</h1>
            <p>View conversations and respond to customer SMS messages. Click on a conversation to view the full thread.</p>
            
            <div class="sms-inbox-container">
                <table class="wp-list-table widefat fixed striped">
                    <thead>
                        <tr>
                            <th style="width: 180px;">Customer</th>
                            <th style="width: 180px;">Business Line</th>
                            <th style="width: 120px;">Last Message</th>
                            <th>Preview</th>
                            <th style="width: 80px;">Messages</th>
                            <th style="width: 150px;">Actions</th>
                        </tr>
                    </thead>
                    <tbody>
                        <?php if (empty($conversations)): ?>
                            <tr>
                                <td colspan="6" style="text-align: center; padding: 20px;">
                                    No customer conversations yet
                                </td>
                            </tr>
                        <?php else: ?>
                            <?php foreach ($conversations as $conversation): ?>
                                <tr data-customer="<?php echo esc_attr($conversation->customer_number); ?>" 
                                    data-business="<?php echo esc_attr($conversation->business_number); ?>">
                                    <td>
                                        <strong><?php echo esc_html($conversation->customer_number); ?></strong>
                                        <br><small style="color: #666;">Customer</small>
                                    </td>
                                    <td>
                                        <strong><?php echo esc_html($conversation->business_number); ?></strong>
                                        <br><small style="color: #666;">Received on</small>
                                    </td>
                                    <td>
                                        <?php echo esc_html($this->format_timestamp_with_timezone($conversation->last_message_time, 'M j, H:i')); ?>
                                        <br>
                                        <small style="color: <?php echo $conversation->last_message_direction === 'incoming' ? '#d63384' : '#0f5132'; ?>;">
                                            <?php echo $conversation->last_message_direction === 'incoming' ? '← Received' : '→ Sent'; ?>
                                        </small>
                                    </td>
                                    <td>
                                        <div style="max-width: 300px; word-wrap: break-word;">
                                            <?php 
                                            $preview = strlen($conversation->last_message) > 100 ? 
                                                substr($conversation->last_message, 0, 100) . '...' : 
                                                $conversation->last_message;
                                            echo esc_html($preview); 
                                            ?>
                                        </div>
                                    </td>
                                    <td style="text-align: center;">
                                        <span class="message-count-badge"><?php echo intval($conversation->message_count); ?></span>
                                    </td>
                                    <td>
                                        <button class="button button-small view-conversation-btn" 
                                                data-customer="<?php echo esc_attr($conversation->customer_number); ?>"
                                                data-business="<?php echo esc_attr($conversation->business_number); ?>">
                                            💬 View Thread
                                        </button>
                                        <button class="button button-small delete-conversation-btn" 
                                                data-customer="<?php echo esc_attr($conversation->customer_number); ?>"
                                                style="margin-left: 5px;">
                                            🗑️ Delete
                                        </button>
                                    </td>
                                </tr>
                            <?php endforeach; ?>
                        <?php endif; ?>
                    </tbody>
                </table>
            </div>
            
            <!-- Conversation Modal -->
            <div id="conversation-modal" style="display: none;">
                <div class="modal-backdrop" onclick="closeConversationModal()"></div>
                <div class="modal-content">
                    <div class="modal-header">
                        <h2 id="conversation-title">Conversation</h2>
                        <button type="button" class="modal-close" onclick="closeConversationModal()">×</button>
                    </div>
                    
                    <div class="conversation-messages" id="conversation-messages">
                        <div id="loading-messages">Loading conversation...</div>
                    </div>
                    
                    <div class="reply-form">
                        <div class="reply-inputs">
                            <textarea id="reply-message" placeholder="Type your message..." rows="3"></textarea>
                            <div class="reply-actions">
                                <button type="button" id="send-reply-btn" class="button button-primary">Send</button>
                                <button type="button" onclick="closeConversationModal()" class="button">Cancel</button>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
            
            <style>
            .sms-inbox-container {
                margin-top: 20px;
            }
            
            .message-count-badge {
                background: #0073aa;
                color: white;
                padding: 4px 8px;
                border-radius: 12px;
                font-size: 11px;
                font-weight: bold;
            }
            
            #conversation-modal {
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                bottom: 0;
                z-index: 100000;
            }
            
            #conversation-modal .modal-backdrop {
                position: absolute;
                top: 0;
                left: 0;
                right: 0;
                bottom: 0;
                background: rgba(0, 0, 0, 0.5);
            }
            
            #conversation-modal .modal-content {
                position: absolute;
                top: 50%;
                left: 50%;
                transform: translate(-50%, -50%);
                background: white;
                border-radius: 8px;
                box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
                max-width: 600px;
                width: 90%;
                max-height: 80vh;
                display: flex;
                flex-direction: column;
            }
            
            .modal-header {
                padding: 20px;
                border-bottom: 1px solid #ddd;
                display: flex;
                justify-content: space-between;
                align-items: center;
            }
            
            .modal-header h2 {
                margin: 0;
                font-size: 18px;
            }
            
            .modal-close {
                background: none;
                border: none;
                font-size: 24px;
                cursor: pointer;
                color: #666;
                padding: 0;
                width: 30px;
                height: 30px;
                display: flex;
                align-items: center;
                justify-content: center;
            }
            
            .conversation-messages {
                flex: 1;
                overflow-y: auto;
                padding: 20px;
                min-height: 300px;
                max-height: 400px;
            }
            
            .message {
                margin-bottom: 15px;
                display: flex;
                align-items: flex-start;
            }
            
            .message.incoming {
                justify-content: flex-start;
            }
            
            .message.outgoing {
                justify-content: flex-end;
            }
            
            .message-bubble {
                max-width: 70%;
                padding: 10px 15px;
                border-radius: 18px;
                word-wrap: break-word;
            }
            
            .message.incoming .message-bubble {
                background: #f1f1f1;
                color: #333;
            }
            
            .message.outgoing .message-bubble {
                background: #0073aa;
                color: white;
            }
            
            .message-time {
                font-size: 11px;
                color: #666;
                margin-top: 5px;
                display: block;
            }
            
            .message.incoming .message-time {
                text-align: left;
            }
            
            .message.outgoing .message-time {
                text-align: right;
                color: rgba(255,255,255,0.8);
            }
            
            .reply-form {
                padding: 20px;
                border-top: 1px solid #ddd;
                background: #f9f9f9;
            }
            
            .reply-inputs textarea {
                width: 100%;
                resize: vertical;
                border: 1px solid #ddd;
                border-radius: 4px;
                padding: 10px;
                margin-bottom: 10px;
            }
            
            .reply-actions {
                text-align: right;
            }
            
            .reply-actions .button {
                margin-left: 10px;
            }
            
            #loading-messages {
                text-align: center;
                color: #666;
                padding: 40px;
            }
            </style>
            
            <script>
            jQuery(document).ready(function($) {
                var currentCustomerPhone = '';
                var currentBusinessPhone = '';
                
                // View conversation
                $('.view-conversation-btn').on('click', function() {
                    currentCustomerPhone = $(this).data('customer');
                    currentBusinessPhone = $(this).data('business');
                    loadConversation(currentCustomerPhone, currentBusinessPhone);
                });
                
                // Delete conversation
                $('.delete-conversation-btn').on('click', function() {
                    var customerPhone = $(this).data('customer');
                    if (confirm('Are you sure you want to delete all messages from ' + customerPhone + '?')) {
                        deleteConversation(customerPhone);
                    }
                });
                
                // Send reply
                $('#send-reply-btn').on('click', function() {
                    var message = $('#reply-message').val().trim();
                    if (message && currentCustomerPhone && currentBusinessPhone) {
                        sendReply(currentCustomerPhone, currentBusinessPhone, message);
                    } else {
                        alert('Please enter a message');
                    }
                });
                
                // Enter key to send
                $('#reply-message').on('keydown', function(e) {
                    if (e.key === 'Enter' && !e.shiftKey) {
                        e.preventDefault();
                        $('#send-reply-btn').click();
                    }
                });
                
                function loadConversation(customerPhone, businessPhone) {
                    $('#conversation-title').html('Conversation: ' + customerPhone + '<br><small style="font-weight: normal;">via ' + businessPhone + '</small>');
                    $('#conversation-messages').html('<div id="loading-messages">Loading conversation...</div>');
                    $('#conversation-modal').show();
                    
                    $.ajax({
                        url: ajaxurl,
                        type: 'POST',
                        data: {
                            action: 'twp_get_conversation',
                            phone_number: customerPhone,
                            nonce: '<?php echo wp_create_nonce('twp_ajax_nonce'); ?>'
                        },
                        success: function(response) {
                            if (response.success) {
                                displayConversation(response.data.messages, customerPhone);
                            } else {
                                $('#conversation-messages').html('<div style="text-align: center; color: #d63384; padding: 40px;">Error: ' + response.data + '</div>');
                            }
                        },
                        error: function() {
                            $('#conversation-messages').html('<div style="text-align: center; color: #d63384; padding: 40px;">Failed to load conversation</div>');
                        }
                    });
                }
                
                function displayConversation(messages, customerPhone) {
                    var html = '';
                    messages.forEach(function(message) {
                        // Determine direction based on whether from_number is the customer
                        var messageClass = (message.from_number === customerPhone) ? 'incoming' : 'outgoing';
                        var messageTime = new Date(message.received_at).toLocaleString();
                        
                        html += '<div class="message ' + messageClass + '">';
                        html += '<div class="message-bubble">';
                        html += '<div>' + escapeHtml(message.body) + '</div>';
                        html += '<small class="message-time">' + messageTime;
                        if (messageClass === 'incoming') {
                            html += ' • From: ' + message.from_number + ' → ' + message.to_number;
                        } else {
                            html += ' • Sent: ' + message.from_number + ' → ' + message.to_number;
                        }
                        html += '</small>';
                        html += '</div>';
                        html += '</div>';
                    });
                    
                    if (html === '') {
                        html = '<div style="text-align: center; color: #666; padding: 40px;">No messages found</div>';
                    }
                    
                    $('#conversation-messages').html(html);
                    
                    // Scroll to bottom
                    var messagesContainer = document.getElementById('conversation-messages');
                    messagesContainer.scrollTop = messagesContainer.scrollHeight;
                }
                
                function sendReply(toNumber, fromNumber, message) {
                    var $button = $('#send-reply-btn');
                    $button.prop('disabled', true).text('Sending...');
                    
                    $.ajax({
                        url: ajaxurl,
                        type: 'POST',
                        data: {
                            action: 'twp_send_sms_reply',
                            to_number: toNumber,
                            from_number: fromNumber,
                            message: message,
                            nonce: '<?php echo wp_create_nonce('twp_ajax_nonce'); ?>'
                        },
                        success: function(response) {
                            $button.prop('disabled', false).text('Send');
                            
                            if (response.success) {
                                $('#reply-message').val('');
                                // Reload conversation to show the new message
                                loadConversation(currentCustomerPhone, currentBusinessPhone);
                            } else {
                                alert('Failed to send message: ' + response.data);
                            }
                        },
                        error: function() {
                            $button.prop('disabled', false).text('Send');
                            alert('Failed to send message. Please try again.');
                        }
                    });
                }
                
                function deleteConversation(phoneNumber) {
                    $.ajax({
                        url: ajaxurl,
                        type: 'POST',
                        data: {
                            action: 'twp_delete_conversation',
                            phone_number: phoneNumber,
                            nonce: '<?php echo wp_create_nonce('twp_ajax_nonce'); ?>'
                        },
                        success: function(response) {
                            if (response.success) {
                                // Remove the conversation row from the table
                                $('tr[data-customer="' + phoneNumber + '"]').fadeOut(function() {
                                    $(this).remove();
                                    
                                    // Check if table is now empty
                                    if ($('.sms-inbox-container tbody tr').length === 0) {
                                        $('.sms-inbox-container tbody').html(
                                            '<tr><td colspan="6" style="text-align: center; padding: 20px;">No customer conversations yet</td></tr>'
                                        );
                                    }
                                });
                                
                                // Close modal if it's open for this conversation
                                if (currentCustomerPhone === phoneNumber) {
                                    closeConversationModal();
                                }
                                
                                // Show success message
                                var deletedCount = response.data.deleted_count || 0;
                                alert('Conversation deleted successfully! (' + deletedCount + ' messages removed)');
                            } else {
                                alert('Failed to delete conversation: ' + response.data);
                            }
                        },
                        error: function() {
                            alert('Failed to delete conversation. Please try again.');
                        }
                    });
                }
                
                function escapeHtml(text) {
                    var div = document.createElement('div');
                    div.textContent = text;
                    return div.innerHTML;
                }
            });
            
            function closeConversationModal() {
                document.getElementById('conversation-modal').style.display = 'none';
            }
            </script>
        </div>
        <?php
    }
    
    /**
     * AJAX handler for deleting SMS messages
     */
    public function ajax_delete_sms() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_send_json_error('Insufficient permissions');
        }
        
        $message_id = isset($_POST['message_id']) ? intval($_POST['message_id']) : 0;
        
        if (empty($message_id)) {
            wp_send_json_error('Message ID is required');
        }
        
        global $wpdb;
        $table_name = $wpdb->prefix . 'twp_sms_log';
        
        $deleted = $wpdb->delete(
            $table_name,
            array('id' => $message_id),
            array('%d')
        );
        
        if ($deleted) {
            wp_send_json_success('Message deleted successfully');
        } else {
            wp_send_json_error('Failed to delete message');
        }
    }
    
    /**
     * AJAX handler for deleting entire SMS conversations
     */
    public function ajax_delete_conversation() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_send_json_error('Insufficient permissions');
        }
        
        $phone_number = isset($_POST['phone_number']) ? sanitize_text_field($_POST['phone_number']) : '';
        
        if (empty($phone_number)) {
            wp_send_json_error('Phone number is required');
        }
        
        global $wpdb;
        $table_name = $wpdb->prefix . 'twp_sms_log';
        
        // Delete all messages involving this phone number
        $deleted = $wpdb->query($wpdb->prepare(
            "DELETE FROM $table_name WHERE from_number = %s OR to_number = %s",
            $phone_number, $phone_number
        ));
        
        if ($deleted !== false) {
            wp_send_json_success([
                'message' => 'Conversation deleted successfully',
                'deleted_count' => $deleted
            ]);
        } else {
            wp_send_json_error('Failed to delete conversation');
        }
    }
    
    /**
     * AJAX handler for getting conversation history
     */
    public function ajax_get_conversation() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_send_json_error('Insufficient permissions');
        }
        
        $phone_number = isset($_POST['phone_number']) ? sanitize_text_field($_POST['phone_number']) : '';
        
        if (empty($phone_number)) {
            wp_send_json_error('Phone number is required');
        }
        
        global $wpdb;
        $table_name = $wpdb->prefix . 'twp_sms_log';
        
        // Get all messages involving this phone number (both incoming and outgoing)
        $messages = $wpdb->get_results($wpdb->prepare(
            "SELECT *, 
             CASE 
                WHEN from_number = %s THEN 'incoming'
                ELSE 'outgoing'
             END as direction
             FROM $table_name 
             WHERE from_number = %s OR to_number = %s
             ORDER BY received_at ASC",
            $phone_number, $phone_number, $phone_number
        ));
        
        wp_send_json_success([
            'messages' => $messages,
            'phone_number' => $phone_number
        ]);
    }
    
    /**
     * AJAX handler for sending SMS replies
     */
    public function ajax_send_sms_reply() {
        check_ajax_referer('twp_ajax_nonce', 'nonce');
        
        if (!current_user_can('manage_options')) {
            wp_send_json_error('Insufficient permissions');
        }
        
        $to_number = isset($_POST['to_number']) ? sanitize_text_field($_POST['to_number']) : '';
        $from_number = isset($_POST['from_number']) ? sanitize_text_field($_POST['from_number']) : '';
        $message = isset($_POST['message']) ? sanitize_textarea_field($_POST['message']) : '';
        
        if (empty($to_number) || empty($message)) {
            wp_send_json_error('Phone number and message are required');
        }
        
        $twilio = new TWP_Twilio_API();
        $result = $twilio->send_sms($to_number, $message, $from_number);
        
        if ($result['success']) {
            // Log the outgoing message to the database
            global $wpdb;
            $table_name = $wpdb->prefix . 'twp_sms_log';
            
            $wpdb->insert(
                $table_name,
                array(
                    'message_sid' => $result['data']['sid'],
                    'from_number' => $from_number,
                    'to_number' => $to_number,
                    'body' => $message,
                    'received_at' => current_time('mysql')
                ),
                array('%s', '%s', '%s', '%s', '%s')
            );
            
            wp_send_json_success([
                'message' => 'SMS sent successfully',
                'data' => $result['data']
            ]);
        } else {
            wp_send_json_error('Failed to send SMS: ' . $result['error']);
        }
    }
    
    /**
     * Display Browser Phone page
     */
    public function display_browser_phone_page() {
        // Check if smart routing is configured on any phone numbers
        $smart_routing_configured = $this->check_smart_routing_status();
        
        // Get user extension data and create personal queues if needed
        $current_user_id = get_current_user_id();
        global $wpdb;
        $extensions_table = $wpdb->prefix . 'twp_user_extensions';
        $extension_data = $wpdb->get_row($wpdb->prepare(
            "SELECT extension FROM $extensions_table WHERE user_id = %d",
            $current_user_id
        ));
        
        if (!$extension_data) {
            TWP_User_Queue_Manager::create_user_queues($current_user_id);
            $extension_data = $wpdb->get_row($wpdb->prepare(
                "SELECT extension FROM $extensions_table WHERE user_id = %d",
                $current_user_id
            ));
        }
        // Get agent status and stats
        $agent_status = TWP_Agent_Manager::get_agent_status($current_user_id);
        $agent_stats = TWP_Agent_Manager::get_agent_stats($current_user_id);
        $is_logged_in = TWP_Agent_Manager::is_agent_logged_in($current_user_id);
        
        ?>
        <div class="wrap">
            <h1>Browser Phone</h1>
            <p>Make and receive calls directly from your browser using Twilio Client.</p>
            
            <!-- Agent Status Bar -->
            <div class="agent-status-bar">
                <div class="status-info">
                    <strong>Extension:</strong> 
                    <span class="extension-badge"><?php echo $extension_data ? esc_html($extension_data->extension) : 'Not Assigned'; ?></span>
                    
                    <strong>Login Status:</strong>
                    <button id="login-toggle-btn" class="button <?php echo $is_logged_in ? 'button-secondary' : 'button-primary'; ?>" onclick="toggleAgentLogin()">
                        <?php echo $is_logged_in ? 'Log Out' : 'Log In'; ?>
                    </button>
                    
                    <strong>Your Status:</strong>
                    <select id="agent-status-select" onchange="updateAgentStatus(this.value)" <?php echo !$is_logged_in ? 'disabled' : ''; ?>>
                        <option value="available" <?php selected($agent_status->status ?? '', 'available'); ?>>Available</option>
                        <option value="busy" <?php selected($agent_status->status ?? '', 'busy'); ?>>Busy</option>
                        <option value="offline" <?php selected($agent_status->status ?? 'offline', 'offline'); ?>>Offline</option>
                    </select>
                </div>
                <div class="agent-stats">
                    <span>Calls Today: <strong><?php echo $agent_stats['calls_today']; ?></strong></span>
                    <span>Total Calls: <strong><?php echo $agent_stats['total_calls']; ?></strong></span>
                    <span>Avg Duration: <strong><?php echo round($agent_stats['avg_duration'] ?? 0); ?>s</strong></span>
                </div>
            </div>
            
            <div class="browser-phone-container">
                <div class="phone-interface">
                    <div class="phone-display">
                        <div id="phone-status">Ready</div>
                        <div id="device-connection-status" style="font-size: 12px; color: #999; margin-top: 5px;">Loading...</div>
                        <div id="twp-debug-info" style="font-size: 10px; color: #666; margin-top: 3px;"></div>
                        <div id="phone-number-display"></div>
                        <div id="call-timer" style="display: none;">00:00</div>
                    </div>
                    
                    <div class="phone-dialpad">
                        <input type="tel" id="phone-number-input" placeholder="Enter phone number" />
                        
                        <div class="dialpad-grid">
                            <button class="dialpad-btn" data-digit="1">1</button>
                            <button class="dialpad-btn" data-digit="2">2<span>ABC</span></button>
                            <button class="dialpad-btn" data-digit="3">3<span>DEF</span></button>
                            <button class="dialpad-btn" data-digit="4">4<span>GHI</span></button>
                            <button class="dialpad-btn" data-digit="5">5<span>JKL</span></button>
                            <button class="dialpad-btn" data-digit="6">6<span>MNO</span></button>
                            <button class="dialpad-btn" data-digit="7">7<span>PQRS</span></button>
                            <button class="dialpad-btn" data-digit="8">8<span>TUV</span></button>
                            <button class="dialpad-btn" data-digit="9">9<span>WXYZ</span></button>
                            <button class="dialpad-btn" data-digit="*">*</button>
                            <button class="dialpad-btn" data-digit="0">0<span>+</span></button>
                            <button class="dialpad-btn" data-digit="#">#</button>
                        </div>
                        
                        <div class="phone-controls">
                            <button id="call-btn" class="button button-primary button-large">
                                <span class="dashicons dashicons-phone"></span> Call
                            </button>
                            <button id="hangup-btn" class="button button-secondary button-large" style="display: none;">
                                <span class="dashicons dashicons-no"></span> Hang Up
                            </button>
                            <button id="answer-btn" class="button button-primary button-large" style="display: none;">
                                <span class="dashicons dashicons-phone"></span> Answer
                            </button>
                        </div>
                        
                        <!-- Call Control Panel (shown during active calls) -->
                        <div class="phone-controls-extra" id="admin-call-controls-panel" style="display: none;">
                            <div style="display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin: 15px 0;">
                                <button id="admin-hold-btn" class="button" title="Put call on hold">
                                    <span class="dashicons dashicons-controls-pause"></span> Hold
                                </button>
                                <button id="admin-transfer-btn" class="button" title="Transfer to another agent">
                                    <span class="dashicons dashicons-share-alt"></span> Transfer
                                </button>
                                <button id="admin-requeue-btn" class="button" title="Put call back in queue">
                                    <span class="dashicons dashicons-backup"></span> Requeue
                                </button>
                                <button id="admin-record-btn" class="button" title="Start/stop recording">
                                    <span class="dashicons dashicons-controls-volumeon"></span> Record
                                </button>
                            </div>
                        </div>
                    </div>
                </div>
                
                <div class="phone-settings">
                    <h3>Settings</h3>
                    <p>
                        <label for="caller-id-select">Outbound Caller ID:</label>
                        <select id="caller-id-select">
                            <option value="">Loading numbers...</option>
                        </select>
                    </p>
                    <p>
                        <label>
                            <input type="checkbox" id="auto-answer" /> Auto-answer incoming calls
                        </label>
                    </p>
                    <div id="browser-phone-error" class="notice notice-error" style="display: none;"></div>
                    
                    <div class="call-mode-toggle">
                        <h4>📞 Call Reception Mode</h4>
                        <p>Choose how you want to receive incoming calls:</p>
                        
                        <div class="mode-selection">
                            <?php
                            $current_user_id = get_current_user_id();
                            $current_mode = get_user_meta($current_user_id, 'twp_call_mode', true);
                            if (empty($current_mode)) {
                                $current_mode = 'cell'; // Default to cell phone
                            }
                            ?>
                            
                            <label class="mode-option <?php echo $current_mode === 'browser' ? 'active' : ''; ?>">
                                <input type="radio" name="call_mode" value="browser" <?php checked($current_mode, 'browser'); ?>>
                                <div class="mode-icon">💻</div>
                                <div class="mode-details">
                                    <strong>Browser Phone</strong>
                                    <small>Calls ring in this browser</small>
                                </div>
                            </label>
                            
                            <label class="mode-option <?php echo $current_mode === 'cell' ? 'active' : ''; ?>">
                                <input type="radio" name="call_mode" value="cell" <?php checked($current_mode, 'cell'); ?>>
                                <div class="mode-icon">📱</div>
                                <div class="mode-details">
                                    <strong>Cell Phone</strong>
                                    <small>Forward to your mobile</small>
                                </div>
                            </label>
                        </div>
                        
                        <div class="mode-status">
                            <div id="current-mode-display">
                                <strong>Current Mode:</strong> 
                                <span id="mode-text"><?php echo $current_mode === 'browser' ? '💻 Browser Phone' : '📱 Cell Phone'; ?></span>
                            </div>
                            <button type="button" id="save-mode-btn" class="button button-primary" style="display: none;">
                                Save Changes
                            </button>
                        </div>
                        
                        <div class="mode-info">
                            <div class="browser-mode-info" style="display: <?php echo $current_mode === 'browser' ? 'block' : 'none'; ?>;">
                                <p><strong>Browser Mode:</strong> Keep this page open to receive calls. High-quality VoIP calling.</p>
                            </div>
                            <div class="cell-mode-info" style="display: <?php echo $current_mode === 'cell' ? 'block' : 'none'; ?>;">
                                <p><strong>Cell Mode:</strong> Calls forwarded to your mobile phone: 
                                <?php 
                                $user_phone = get_user_meta($current_user_id, 'twp_phone_number', true);
                                echo $user_phone ? esc_html($user_phone) : '<em>Not configured</em>';
                                ?>
                                </p>
                            </div>
                        </div>
                    </div>
                    
                    <?php if (!$smart_routing_configured && current_user_can('manage_options')): ?>
                    <div class="setup-info">
                        <h4>📋 Setup Required</h4>
                        <p>To enable mode switching, update your phone number webhook to:</p>
                        <code><?php echo home_url('/wp-json/twilio-webhook/v1/smart-routing'); ?></code>
                        <button type="button" class="button button-small" onclick="copyToClipboard('<?php echo home_url('/wp-json/twilio-webhook/v1/smart-routing'); ?>')">Copy</button>
                        <p><small>This smart routing URL will automatically route calls based on your current mode preference.</small></p>
                        <p><a href="<?php echo admin_url('admin.php?page=twilio-wp-plugin'); ?>#twiml-app-instructions" class="button button-primary">Auto-Configure</a></p>
                    </div>
                    <?php endif; ?>
                    
                    <!-- Enhanced Queue Management Section -->
                    <div class="queue-management">
                        <div class="queue-header">
                            <h4>📞 Your Queues</h4>
                            <?php if ($extension_data): ?>
                                <div class="user-extension-admin">
                                    📞 Your Extension: <strong><?php echo esc_html($extension_data->extension); ?></strong>
                                </div>
                            <?php endif; ?>
                        </div>
                        <div id="admin-queue-list">
                            <div class="queue-loading">Loading your queues...</div>
                        </div>
                        <div class="queue-actions">
                            <button type="button" id="admin-refresh-queues" class="button button-secondary">
                                Refresh Queues
                            </button>
                        </div>
                    </div>
                </div>
            </div>
            
            <style>
            .browser-phone-container {
                display: flex;
                gap: 30px;
                margin-top: 20px;
            }
            .phone-interface {
                background: #f5f5f5;
                border-radius: 10px;
                padding: 20px;
                width: 320px;
            }
            .phone-display {
                background: #333;
                color: white;
                padding: 20px;
                border-radius: 5px;
                text-align: center;
                margin-bottom: 20px;
            }
            #phone-status {
                font-size: 14px;
                color: #4CAF50;
                margin-bottom: 10px;
            }
            #phone-number-display {
                font-size: 18px;
                min-height: 25px;
            }
            #call-timer {
                font-size: 16px;
                margin-top: 10px;
            }
            #phone-number-input {
                width: 100%;
                padding: 10px;
                font-size: 18px;
                text-align: center;
                margin-bottom: 20px;
            }
            .dialpad-grid {
                display: grid;
                grid-template-columns: repeat(3, 1fr);
                gap: 10px;
                margin-bottom: 20px;
            }
            .dialpad-btn {
                padding: 15px;
                font-size: 20px;
                border: 1px solid #ddd;
                background: white;
                border-radius: 5px;
                cursor: pointer;
                position: relative;
            }
            .dialpad-btn:hover {
                background: #f0f0f0;
            }
            .dialpad-btn span {
                display: block;
                font-size: 10px;
                color: #666;
                margin-top: 2px;
            }
            .phone-controls {
                text-align: center;
                margin-bottom: 10px;
            }
            .phone-controls .button-large {
                width: 100%;
                height: 50px;
                font-size: 16px;
            }
            .phone-controls-extra {
                display: flex;
                gap: 10px;
                justify-content: center;
            }
            .phone-settings {
                flex: 1;
                max-width: 400px;
            }
            .incoming-calls-info {
                background: #e7f3ff;
                padding: 15px;
                border-radius: 4px;
                border-left: 4px solid #0073aa;
                margin-top: 20px;
            }
            .incoming-calls-info h4 {
                margin-top: 0;
                color: #0073aa;
            }
            .call-mode-toggle {
                background: #f0f8ff;
                padding: 20px;
                border-radius: 8px;
                border-left: 4px solid #2196F3;
                margin-top: 20px;
            }
            .call-mode-toggle h4 {
                margin-top: 0;
                color: #1976D2;
            }
            .mode-selection {
                display: flex;
                gap: 15px;
                margin: 15px 0;
            }
            .mode-option {
                display: flex;
                align-items: center;
                padding: 15px;
                border: 2px solid #ddd;
                border-radius: 8px;
                cursor: pointer;
                transition: all 0.3s ease;
                flex: 1;
                background: white;
            }
            .mode-option:hover {
                border-color: #2196F3;
                background: #f5f9ff;
            }
            .mode-option.active {
                border-color: #2196F3;
                background: #e3f2fd;
                box-shadow: 0 2px 4px rgba(33, 150, 243, 0.2);
            }
            .mode-option input[type="radio"] {
                margin: 0;
                margin-right: 12px;
            }
            .mode-icon {
                font-size: 24px;
                margin-right: 12px;
            }
            .mode-details {
                flex: 1;
            }
            .mode-details strong {
                display: block;
                margin-bottom: 2px;
            }
            .mode-details small {
                color: #666;
                font-size: 12px;
            }
            .mode-status {
                display: flex;
                align-items: center;
                justify-content: space-between;
                margin: 15px 0;
                padding: 10px;
                background: white;
                border-radius: 4px;
            }
            .mode-info {
                margin-top: 10px;
            }
            .setup-info {
                background: #fff3cd;
                padding: 15px;
                border-radius: 4px;
                border-left: 4px solid #ffc107;
                margin-top: 20px;
            }
            .setup-info h4 {
                margin-top: 0;
                color: #856404;
            }
            .queue-management {
                background: #f0f8ff;
                padding: 20px;
                border-radius: 8px;
                border-left: 4px solid #2196F3;
                margin-top: 20px;
            }
            .queue-management h4 {
                margin-top: 0;
                color: #1976D2;
            }
            .queue-header {
                display: flex;
                justify-content: space-between;
                align-items: center;
                margin-bottom: 15px;
            }
            .user-extension-admin {
                background: #e8f4f8;
                padding: 6px 12px;
                border-radius: 4px;
                font-size: 13px;
                color: #2c5282;
            }
            .queue-item {
                display: flex;
                justify-content: space-between;
                align-items: center;
                padding: 12px;
                background: white;
                border: 1px solid #ddd;
                border-radius: 4px;
                margin-bottom: 10px;
                position: relative;
            }
            .queue-item.queue-type-personal {
                border-left: 4px solid #28a745;
            }
            .queue-item.queue-type-hold {
                border-left: 4px solid #ffc107;
            }
            .queue-item.queue-type-general {
                border-left: 4px solid #007bff;
            }
            .queue-item.has-calls {
                background: #fff3cd;
                border-color: #ffeaa7;
            }
            .queue-name {
                display: flex;
                align-items: center;
                gap: 8px;
                font-weight: 600;
                color: #333;
            }
            .queue-type-icon {
                font-size: 16px;
            }
            .queue-type-personal .queue-name {
                color: #155724;
            }
            .queue-type-hold .queue-name {
                color: #856404;
            }
            .queue-info {
                flex: 1;
            }
            .queue-details {
                font-size: 12px;
                color: #666;
                margin-top: 4px;
            }
            .queue-waiting {
                display: inline-block;
                font-size: 12px;
                color: #666;
                margin-right: 10px;
            }
            .queue-waiting.has-calls {
                color: #d63384;
                font-weight: bold;
                background: #fff;
                padding: 2px 6px;
                border-radius: 3px;
                border: 1px solid #f8d7da;
            }
            .queue-loading {
                text-align: center;
                color: #666;
                font-style: italic;
                padding: 20px;
            }
            .queue-actions {
                margin-top: 15px;
                text-align: center;
            }
            </style>
            
            <!-- Twilio Voice SDK v2 from unpkg CDN -->
            <script src="https://unpkg.com/@twilio/voice-sdk@2.11.0/dist/twilio.min.js"></script>
            <script>
            jQuery(document).ready(function($) {
                var device = null;
                var currentCall = null;
                var callTimer = null;
                var callStartTime = null;
                var tokenRefreshTimer = null;
                var tokenExpiry = null;
                var audioContext = null;
                var ringtoneAudio = null;
                var isPageVisible = true;
                var deviceConnectionState = 'disconnected'; // disconnected, connecting, connected
                var serviceWorkerRegistration = null;

                // Initialize AudioContext for mobile audio playback
                function initializeAudioContext() {
                    try {
                        if (!audioContext) {
                            // Create AudioContext with compatibility
                            var AudioContextClass = window.AudioContext || window.webkitAudioContext;
                            audioContext = new AudioContextClass();
                            console.log('AudioContext created, state:', audioContext.state);
                        }

                        // Resume AudioContext if suspended (required on mobile)
                        if (audioContext.state === 'suspended') {
                            audioContext.resume().then(function() {
                                console.log('AudioContext resumed successfully');
                            }).catch(function(err) {
                                console.error('Failed to resume AudioContext:', err);
                            });
                        }

                        return true;
                    } catch (error) {
                        console.error('Failed to initialize AudioContext:', error);
                        return false;
                    }
                }

                // Create and setup ringtone audio element
                function setupRingtone() {
                    if (!ringtoneAudio) {
                        ringtoneAudio = new Audio();
                        // Use a simple sine wave tone or default ringtone
                        // For now, we'll use a data URI for a simple beep tone
                        ringtoneAudio.loop = true;
                        ringtoneAudio.volume = 0.7;

                        // Create a simple ringtone using Web Audio API
                        createRingtone();
                    }
                }

                // Create ringtone using Web Audio API for better mobile support
                function createRingtone() {
                    // Use a simple base64-encoded beep tone (short MP3)
                    // This is a simple 1-second beep at 800Hz
                    // You can replace this with a custom ringtone file URL if you upload one

                    // For now, use a simple approach: HTML5 Audio with error fallback
                    // Note: On mobile, audio playback may be restricted, so we rely heavily on vibration
                    var ringtoneUrl = '<?php echo plugins_url('assets/sounds/ringtone.mp3', dirname(__FILE__)); ?>';

                    // Try to load the ringtone file
                    ringtoneAudio.src = ringtoneUrl;

                    // Fallback: if ringtone file fails to load, we'll just use vibration
                    ringtoneAudio.addEventListener('error', function(e) {
                        console.log('Ringtone file not found (this is normal), using vibration only for mobile');
                        // Don't show error - vibration is sufficient for mobile
                    }, { once: true });

                    // Try to preload
                    ringtoneAudio.load();
                }

                // Play ringtone for incoming call
                function playRingtone() {
                    try {
                        // Initialize AudioContext on user interaction
                        initializeAudioContext();

                        if (ringtoneAudio) {
                            var playPromise = ringtoneAudio.play();

                            if (playPromise !== undefined) {
                                playPromise.then(function() {
                                    console.log('Ringtone playing');
                                }).catch(function(error) {
                                    console.error('Ringtone play failed:', error);
                                    // Fallback: vibrate on mobile
                                    vibrateDevice([300, 200, 300, 200, 300]);
                                });
                            }
                        }

                        // Always vibrate on mobile for better notification
                        vibrateDevice([300, 200, 300, 200, 300]);

                    } catch (error) {
                        console.error('Error playing ringtone:', error);
                    }
                }

                // Stop ringtone
                function stopRingtone() {
                    try {
                        if (ringtoneAudio) {
                            ringtoneAudio.pause();
                            ringtoneAudio.currentTime = 0;
                        }
                    } catch (error) {
                        console.error('Error stopping ringtone:', error);
                    }
                }

                // Vibrate device (mobile)
                function vibrateDevice(pattern) {
                    if ('vibrate' in navigator) {
                        navigator.vibrate(pattern);
                    }
                }

                // Register service worker for PWA notifications
                function registerServiceWorker() {
                    if ('serviceWorker' in navigator) {
                        var swPath = '<?php echo plugins_url('assets/js/twp-service-worker.js', dirname(__FILE__)); ?>';

                        navigator.serviceWorker.register(swPath)
                            .then(function(registration) {
                                console.log('Service Worker registered:', registration);
                                serviceWorkerRegistration = registration;

                                // Request notification permission
                                if ('Notification' in window && Notification.permission === 'default') {
                                    Notification.requestPermission().then(function(permission) {
                                        console.log('Notification permission:', permission);
                                    });
                                }
                            })
                            .catch(function(error) {
                                console.error('Service Worker registration failed:', error);
                            });
                    }
                }

                // Send notification via service worker
                function sendIncomingCallNotification(callerNumber) {
                    // Try browser notification first
                    if ('Notification' in window && Notification.permission === 'granted') {
                        if (serviceWorkerRegistration && serviceWorkerRegistration.active) {
                            serviceWorkerRegistration.active.postMessage({
                                type: 'SHOW_NOTIFICATION',
                                title: 'Incoming Call',
                                body: 'Call from ' + (callerNumber || 'Unknown Number'),
                                icon: '<?php echo plugins_url('assets/images/phone-icon.png', dirname(__FILE__)); ?>',
                                tag: 'incoming-call',
                                requireInteraction: true
                            });
                        } else {
                            // Fallback: show notification directly
                            new Notification('Incoming Call', {
                                body: 'Call from ' + (callerNumber || 'Unknown Number'),
                                icon: '<?php echo plugins_url('assets/images/phone-icon.png', dirname(__FILE__)); ?>',
                                tag: 'incoming-call',
                                requireInteraction: true
                            });
                        }
                    }
                }

                // Monitor page visibility for background call handling
                function setupPageVisibility() {
                    document.addEventListener('visibilitychange', function() {
                        isPageVisible = !document.hidden;
                        console.log('Page visibility changed:', isPageVisible ? 'visible' : 'hidden');

                        // If page becomes visible, resume audio context
                        if (isPageVisible && audioContext) {
                            initializeAudioContext();
                        }
                    });
                }

                // Update device connection status in UI
                function updateConnectionStatus(state) {
                    deviceConnectionState = state;
                    var statusText = '';
                    var statusColor = '';

                    switch(state) {
                        case 'connected':
                            statusText = 'Connected';
                            statusColor = '#4CAF50';
                            break;
                        case 'connecting':
                            statusText = 'Connecting...';
                            statusColor = '#FF9800';
                            break;
                        case 'disconnected':
                            statusText = 'Disconnected';
                            statusColor = '#f44336';
                            break;
                        default:
                            statusText = 'Unknown';
                            statusColor = '#999';
                    }

                    // Update status indicator (we'll add this to the UI)
                    $('#device-connection-status').text(statusText).css('color', statusColor);
                }

                // Wait for SDK to load
                function waitForTwilioSDK(callback) {
                    if (typeof Twilio !== 'undefined' && Twilio.Device) {
                        callback();
                    } else {
                        console.log('Waiting for Twilio Voice SDK to load...');
                        setTimeout(function() {
                            waitForTwilioSDK(callback);
                        }, 100);
                    }
                }
                
                // Initialize the browser phone
                function initializeBrowserPhone() {
                    debugLog('initializeBrowserPhone called');
                    $('#phone-status').text('Initializing...');
                    updateConnectionStatus('connecting');

                    // Initialize audio and PWA features
                    setupRingtone();
                    registerServiceWorker();
                    setupPageVisibility();

                    // Initialize AudioContext on first user interaction
                    $(document).one('click touchstart', function() {
                        console.log('User interaction detected, initializing AudioContext');
                        initializeAudioContext();
                    });

                    // Wait for SDK before proceeding
                    waitForTwilioSDK(function() {
                        // Get capability token (access token for v2)
                        $.post(ajaxurl, {
                            action: 'twp_generate_capability_token',
                            nonce: '<?php echo wp_create_nonce('twp_ajax_nonce'); ?>'
                        }, function(response) {
                            if (response.success) {
                                $('#browser-phone-error').hide();
                                setupTwilioDevice(response.data.token);
                                // Set token expiry and schedule refresh
                                tokenExpiry = Date.now() + (response.data.expires_in || 3600) * 1000;
                                scheduleTokenRefresh();
                            } else {
                                // WordPress wp_send_json_error sends the error message as response.data
                                var errorMsg = response.data || response.error || 'Unknown error';
                                showError('Failed to initialize: ' + errorMsg);
                                updateConnectionStatus('disconnected');
                            }
                        }).fail(function() {
                            showError('Failed to connect to server');
                            updateConnectionStatus('disconnected');
                        });
                    });
                }
                
                // Request microphone and speaker permissions
                async function requestMediaPermissions() {
                    try {
                        console.log('Requesting media permissions...');
                        
                        // Request microphone permission
                        const stream = await navigator.mediaDevices.getUserMedia({
                            audio: true,
                            video: false
                        });
                        
                        // Stop the stream immediately as we just needed permission
                        stream.getTracks().forEach(track => track.stop());
                        
                        console.log('Media permissions granted');
                        return true;
                    } catch (error) {
                        console.error('Media permission denied or not available:', error);
                        
                        // Show user-friendly error message
                        let errorMessage = 'Microphone access is required for browser phone functionality. ';
                        
                        if (error.name === 'NotAllowedError') {
                            errorMessage += 'Please allow microphone access in your browser settings and refresh the page.';
                        } else if (error.name === 'NotFoundError') {
                            errorMessage += 'No microphone found. Please connect a microphone and try again.';
                        } else {
                            errorMessage += 'Please check your browser settings and try again.';
                        }
                        
                        $('#browser-phone-error').show().find('.notice-message').text(errorMessage);
                        $('#browser-phone-status').text('Permission denied').removeClass('online').addClass('offline');
                        return false;
                    }
                }

                async function setupTwilioDevice(token) {
                    debugLog('setupTwilioDevice called');
                    try {
                        // Check if Twilio SDK is available
                        debugLog('Twilio check: ' + (typeof Twilio) + ', Device: ' + (typeof Twilio !== 'undefined' ? typeof Twilio.Device : 'N/A'));
                        if (typeof Twilio === 'undefined' || !Twilio.Device) {
                            throw new Error('Twilio Voice SDK not loaded');
                        }

                        console.log('Setting up Twilio Device...');
                        debugLog('Creating Twilio.Device...');
                        updateConnectionStatus('connecting');

                        // Request media permissions before setting up device
                        const hasPermissions = await requestMediaPermissions();
                        if (!hasPermissions) {
                            updateConnectionStatus('disconnected');
                            return; // Stop setup if permissions denied
                        }

                        // Clean up existing device if any
                        if (device) {
                            console.log('Destroying existing device');
                            await device.destroy();
                        }

                        // Detect if we're on Android/mobile for specific settings
                        var isAndroid = /Android/i.test(navigator.userAgent);
                        var isMobile = /Android|iPhone|iPad|iPod/i.test(navigator.userAgent);

                        console.log('Device detection - Android:', isAndroid, 'Mobile:', isMobile);

                        // Android-specific audio constraints for better WebRTC performance
                        var audioConstraints = {
                            echoCancellation: true,
                            noiseSuppression: true,
                            autoGainControl: true
                        };

                        // Additional Android-specific settings
                        if (isAndroid) {
                            audioConstraints.googEchoCancellation = true;
                            audioConstraints.googNoiseSuppression = true;
                            audioConstraints.googAutoGainControl = true;
                            audioConstraints.googHighpassFilter = true;
                        }

                        // Setup Twilio Voice SDK v2 Device
                        // Note: Voice SDK v2 uses Twilio.Device directly, not Twilio.Voice.Device
                        device = new Twilio.Device(token, {
                            logLevel: 1, // 0 = TRACE, 1 = DEBUG
                            codecPreferences: ['opus', 'pcmu'],
                            edge: '<?php echo esc_js(get_option('twp_twilio_edge', 'roaming')); ?>',
                            enableIceRestart: true, // Important for mobile network switching
                            audioConstraints: audioConstraints,
                            maxCallSignalingTimeoutMs: 30000, // 30 seconds timeout for mobile
                            closeProtection: true // Warn before closing during call
                        });

                        console.log('Twilio Device created with audio constraints:', audioConstraints);
                        debugLog('Device created, setting up handlers...');

                        // Set up event handlers BEFORE registering
                        // Device registered and ready
                        device.on('registered', function() {
                            console.log('Device registered successfully');
                            debugLog('Device REGISTERED!');
                            $('#phone-status').text('Ready').css('color', '#4CAF50');
                            $('#call-btn').prop('disabled', false);
                            updateConnectionStatus('connected');
                        });

                        // Device unregistered
                        device.on('unregistered', function() {
                            console.log('Device unregistered');
                            updateConnectionStatus('disconnected');
                        });

                        // Handle errors
                        device.on('error', function(error) {
                            console.error('Twilio Device Error:', error);
                            console.error('Error code:', error.code, 'Message:', error.message);
                            updateConnectionStatus('disconnected');

                            var errorMsg = error.message || error.toString();

                            // Provide specific help for common errors
                            if (errorMsg.includes('valid callerId must be provided')) {
                                errorMsg = 'Caller ID error: Make sure you select a verified Twilio phone number as Caller ID. The number must be purchased through your Twilio account.';
                            } else if (errorMsg.includes('TwiML App')) {
                                errorMsg = 'TwiML App error: Check that your TwiML App SID is correctly configured in Settings.';
                            } else if (errorMsg.includes('token') || errorMsg.includes('Token')) {
                                errorMsg = 'Token error: ' + errorMsg + ' - The page will automatically try to refresh the token.';
                                // Try to reinitialize after token error
                                setTimeout(initializeBrowserPhone, 5000);
                            } else if (errorMsg.includes('31005') || errorMsg.includes('Connection error')) {
                                errorMsg = 'Connection error: Check your internet connection. If on mobile, try switching between WiFi and cellular data.';
                                // Retry connection
                                setTimeout(function() {
                                    if (device) {
                                        console.log('Attempting to reconnect device...');
                                        device.register();
                                    }
                                }, 3000);
                            }

                            showError(errorMsg);
                        });

                        // Handle incoming calls
                        device.on('incoming', function(call) {
                            console.log('Incoming call from:', call.parameters.From);
                            console.log('Call SID:', call.parameters.CallSid);
                            console.log('Device connection state:', deviceConnectionState);

                            currentCall = call;
                            var callerNumber = call.parameters.From || 'Unknown Number';

                            $('#phone-status').text('Incoming Call').css('color', '#FF9800');
                            $('#phone-number-display').text(callerNumber);
                            $('#call-btn').hide();
                            $('#answer-btn').show();

                            // Play ringtone and show notification
                            playRingtone();

                            // If page is in background, send notification
                            if (!isPageVisible) {
                                console.log('Page in background, sending notification');
                                sendIncomingCallNotification(callerNumber);
                            }

                            // Setup call event handlers
                            setupCallHandlers(call);

                            if ($('#auto-answer').is(':checked')) {
                                console.log('Auto-answer enabled, accepting call');
                                call.accept();
                            }
                        });
                        
                        // Token about to expire
                        device.on('tokenWillExpire', function() {
                            console.log('Token will expire soon, refreshing...');
                            refreshToken();
                        });
                        
                        // Register device AFTER setting up event handlers
                        debugLog('Calling device.register()...');
                        await device.register();
                        debugLog('device.register() completed');

                    } catch (error) {
                        console.error('Error setting up Twilio Device:', error);
                        debugLog('ERROR: ' + error.message);
                        showError('Failed to setup device: ' + error.message);
                    }
                }
                
                function setupCallHandlers(call) {
                    // Call accepted/connected
                    call.on('accept', function() {
                        console.log('Call accepted and connected');
                        stopRingtone();
                        $('#phone-status').text('Connected').css('color', '#2196F3');
                        $('#call-btn').hide();
                        $('#answer-btn').hide();
                        $('#hangup-btn').show();
                        $('#phone-controls-extra').show();
                        $('#admin-call-controls-panel').show();
                        startCallTimer();
                    });

                    // Call disconnected
                    call.on('disconnect', function() {
                        console.log('Call disconnected');
                        stopRingtone();
                        currentCall = null;
                        $('#phone-status').text('Ready').css('color', '#4CAF50');
                        $('#hangup-btn').hide();
                        $('#answer-btn').hide();
                        $('#call-btn').show();
                        $('#phone-controls-extra').hide();
                        $('#admin-call-controls-panel').hide();
                        $('#call-timer').hide();
                        stopCallTimer();

                        // Reset button states
                        $('#admin-hold-btn').text('Hold').removeClass('btn-active');
                        $('#admin-record-btn').text('Record').removeClass('btn-active');
                    });

                    // Call rejected
                    call.on('reject', function() {
                        console.log('Call rejected');
                        stopRingtone();
                        currentCall = null;
                        $('#phone-status').text('Ready').css('color', '#4CAF50');
                        $('#answer-btn').hide();
                        $('#call-btn').show();
                    });

                    // Call cancelled (by caller before answer)
                    call.on('cancel', function() {
                        console.log('Call cancelled by caller');
                        stopRingtone();
                        currentCall = null;
                        $('#phone-status').text('Missed Call').css('color', '#FF9800');
                        $('#answer-btn').hide();
                        $('#call-btn').show();
                        setTimeout(function() {
                            $('#phone-status').text('Ready').css('color', '#4CAF50');
                        }, 3000);
                    });

                    // Call error
                    call.on('error', function(error) {
                        console.error('Call error:', error);
                        console.error('Error code:', error.code, 'Message:', error.message);
                        stopRingtone();

                        var errorMsg = error.message || error.toString();

                        // Specific error handling for Android/mobile
                        if (error.code === 31005) {
                            errorMsg = 'Connection failed: Check your network connection. Try switching between WiFi and cellular data.';
                        } else if (error.code === 31201 || error.code === 31204) {
                            errorMsg = 'Call setup failed: Please try again. If the problem persists, refresh the page.';
                        } else if (error.code === 31208) {
                            errorMsg = 'Media connection failed: Check microphone permissions and try again.';
                        }

                        showError('Call error: ' + errorMsg);
                    });
                }
                
                function refreshToken() {
                    console.log('Refreshing capability token...');
                    
                    // Don't refresh if currently in a call
                    if (currentCall) {
                        console.log('Currently in call, postponing token refresh');
                        setTimeout(refreshToken, 60000); // Retry in 1 minute
                        return;
                    }
                    
                    $.post(ajaxurl, {
                        action: 'twp_generate_capability_token',
                        nonce: '<?php echo wp_create_nonce('twp_ajax_nonce'); ?>'
                    }, function(response) {
                        if (response.success && device) {
                            console.log('Token refreshed successfully');
                            device.updateToken(response.data.token);
                            // Update token expiry and schedule next refresh
                            tokenExpiry = Date.now() + (response.data.expires_in || 3600) * 1000;
                            scheduleTokenRefresh();
                        } else {
                            console.error('Failed to refresh token:', response.data);
                            showError('Failed to refresh connection. Please refresh the page.');
                        }
                    }).fail(function() {
                        console.error('Failed to refresh token - network error');
                        // Retry in 30 seconds
                        setTimeout(refreshToken, 30000);
                    });
                }
                
                /**
                 * Schedule token refresh
                 * Refreshes token 5 minutes before expiry
                 */
                function scheduleTokenRefresh() {
                    // Clear any existing timer
                    if (tokenRefreshTimer) {
                        clearTimeout(tokenRefreshTimer);
                    }
                    
                    if (!tokenExpiry) {
                        console.error('Token expiry time not set');
                        return;
                    }
                    
                    // Calculate time until refresh (5 minutes before expiry)
                    var refreshBuffer = 5 * 60 * 1000; // 5 minutes in milliseconds
                    var timeUntilRefresh = tokenExpiry - Date.now() - refreshBuffer;
                    
                    if (timeUntilRefresh <= 0) {
                        // Token needs refresh immediately
                        refreshToken();
                    } else {
                        // Schedule refresh
                        console.log('Scheduling token refresh in', Math.round(timeUntilRefresh / 1000), 'seconds');
                        tokenRefreshTimer = setTimeout(refreshToken, timeUntilRefresh);
                    }
                }
                
                function showError(message) {
                    $('#browser-phone-error').html('<p><strong>Error:</strong> ' + message + '</p>').show();
                    $('#phone-status').text('Error').css('color', '#f44336');
                }
                
                function startCallTimer() {
                    callStartTime = new Date();
                    $('#call-timer').show();
                    
                    callTimer = setInterval(function() {
                        var elapsed = Math.floor((new Date() - callStartTime) / 1000);
                        var minutes = Math.floor(elapsed / 60);
                        var seconds = elapsed % 60;
                        $('#call-timer').text(
                            (minutes < 10 ? '0' : '') + minutes + ':' + 
                            (seconds < 10 ? '0' : '') + seconds
                        );
                    }, 1000);
                }
                
                function stopCallTimer() {
                    if (callTimer) {
                        clearInterval(callTimer);
                        callTimer = null;
                    }
                    $('#call-timer').text('00:00');
                }
                
                // Load phone numbers for caller ID
                $.post(ajaxurl, {
                    action: 'twp_get_phone_numbers',
                    nonce: '<?php echo wp_create_nonce('twp_ajax_nonce'); ?>'
                }, function(response) {
                    if (response.success) {
                        var options = '<option value="">Select caller ID...</option>';
                        response.data.forEach(function(number) {
                            options += '<option value="' + number.phone_number + '">' + number.phone_number + '</option>';
                        });
                        $('#caller-id-select').html(options);
                    } else {
                        console.error('Failed to load phone numbers:', response.data || response.error);
                        $('#caller-id-select').html('<option value="">Error loading numbers</option>');
                    }
                }).fail(function(xhr, status, error) {
                    console.error('Failed to load phone numbers - network error:', error);
                    $('#caller-id-select').html('<option value="">Error loading numbers</option>');
                });
                
                // Dialpad functionality (support both click and touch events)
                $('.dialpad-btn').on('click touchend', function(e) {
                    e.preventDefault(); // Prevent duplicate events
                    var digit = $(this).data('digit');
                    var currentVal = $('#phone-number-input').val();
                    $('#phone-number-input').val(currentVal + digit);

                    // Initialize AudioContext on user interaction (mobile requirement)
                    initializeAudioContext();
                });
                
                // Call button
                $('#call-btn').on('click', async function() {
                    var phoneNumber = $('#phone-number-input').val().trim();
                    var callerId = $('#caller-id-select').val();
                    
                    if (!phoneNumber) {
                        alert('Please enter a phone number');
                        return;
                    }
                    
                    if (!callerId) {
                        alert('Please select a caller ID number. This must be a verified Twilio phone number.');
                        return;
                    }
                    
                    if (!device) {
                        alert('Phone is not initialized. Please refresh the page.');
                        return;
                    }
                    
                    // Format phone number
                    phoneNumber = phoneNumber.replace(/\D/g, '');
                    if (phoneNumber.length === 10) {
                        phoneNumber = '+1' + phoneNumber;
                    } else if (phoneNumber.length === 11 && phoneNumber.charAt(0) === '1') {
                        phoneNumber = '+' + phoneNumber;
                    } else if (!phoneNumber.startsWith('+')) {
                        phoneNumber = '+' + phoneNumber;
                    }
                    
                    $('#phone-number-display').text(phoneNumber);
                    $('#phone-status').text('Calling...').css('color', '#FF9800');
                    
                    try {
                        var params = {
                            To: phoneNumber,
                            From: callerId
                        };
                        
                        console.log('Making call with params:', params);
                        currentCall = await device.connect({params: params});
                        setupCallHandlers(currentCall);
                    } catch (error) {
                        console.error('Call error:', error);
                        showError('Failed to make call: ' + error.message);
                        $('#phone-status').text('Ready').css('color', '#4CAF50');
                    }
                });
                
                // Hangup button
                $('#hangup-btn').on('click', function() {
                    if (currentCall) {
                        currentCall.disconnect();
                    }
                });
                
                // Answer button
                $('#answer-btn').on('click', function() {
                    console.log('Answer button clicked');
                    console.log('Device connection state:', deviceConnectionState);
                    console.log('Current call:', currentCall);

                    if (!currentCall) {
                        console.error('No current call to answer');
                        showError('No incoming call to answer');
                        return;
                    }

                    // Check device connection state
                    if (deviceConnectionState !== 'connected') {
                        console.error('Device not connected, state:', deviceConnectionState);
                        showError('Phone not connected. Reconnecting...');

                        // Try to reconnect
                        if (device) {
                            device.register().then(function() {
                                console.log('Device reconnected, answering call');
                                if (currentCall) {
                                    currentCall.accept();
                                }
                            }).catch(function(err) {
                                console.error('Failed to reconnect device:', err);
                                showError('Failed to reconnect. Please refresh the page.');
                            });
                        }
                        return;
                    }

                    // Initialize AudioContext before accepting (important for mobile)
                    initializeAudioContext();

                    try {
                        console.log('Accepting call...');
                        currentCall.accept();
                    } catch (error) {
                        console.error('Error accepting call:', error);
                        showError('Failed to answer call: ' + error.message);
                    }
                });
                
                // Mute button
                $('#mute-btn').on('click', function() {
                    if (currentCall) {
                        var muted = currentCall.isMuted();
                        currentCall.mute(!muted);
                        $(this).text(muted ? 'Mute' : 'Unmute');
                        $(this).find('.dashicons').toggleClass('dashicons-microphone dashicons-microphone');
                    }
                });
                
                // Admin call control buttons
                $('#admin-hold-btn').on('click', function() {
                    if (currentCall) {
                        adminToggleHold();
                    }
                });
                
                $('#admin-transfer-btn').on('click', function() {
                    if (currentCall) {
                        adminShowTransferDialog();
                    }
                });
                
                $('#admin-requeue-btn').on('click', function() {
                    if (currentCall) {
                        adminShowRequeueDialog();
                    }
                });
                
                $('#admin-record-btn').on('click', function() {
                    if (currentCall) {
                        adminToggleRecording();
                    }
                });
                
                // Debug helper
                function debugLog(msg) {
                    console.log('TWP Debug: ' + msg);
                    var debugEl = $('#twp-debug-info');
                    if (debugEl.length) {
                        debugEl.append(msg + '<br>');
                    }
                }

                // Check if SDK loaded and initialize
                debugLog('jQuery ready');
                $(window).on('load', function() {
                    debugLog('Window loaded');
                    setTimeout(function() {
                        debugLog('Checking Twilio: ' + (typeof Twilio));
                        if (typeof Twilio === 'undefined') {
                            showError('Twilio Voice SDK failed to load. Please check your internet connection and try refreshing the page.');
                            console.error('Twilio SDK not found. Script may be blocked or failed to load.');
                            debugLog('SDK FAILED');
                        } else {
                            console.log('Twilio SDK loaded successfully');
                            debugLog('SDK OK, initializing...');
                            initializeBrowserPhone();
                        }
                    }, 1000);
                });
                
                // Clean up on page unload
                $(window).on('beforeunload', function() {
                    if (tokenRefreshTimer) {
                        clearTimeout(tokenRefreshTimer);
                    }
                    if (device) {
                        device.destroy();
                    }
                });
                
                // Mode switching functionality
                $('input[name="call_mode"]').on('change', function() {
                    var selectedMode = $(this).val();
                    var currentMode = $('#mode-text').text().includes('Browser') ? 'browser' : 'cell';
                    
                    if (selectedMode !== currentMode) {
                        $('#save-mode-btn').show();
                        
                        // Update visual feedback
                        $('.mode-option').removeClass('active');
                        $(this).closest('.mode-option').addClass('active');
                        
                        // Update mode display
                        var modeText = selectedMode === 'browser' ? '💻 Browser Phone' : '📱 Cell Phone';
                        $('#mode-text').text(modeText + ' (unsaved)').css('color', '#ff9800');
                        
                        // Show appropriate info
                        $('.mode-info > div').hide();
                        $('.' + selectedMode + '-mode-info').show();
                    }
                });
                
                // Enhanced queue management functionality
                var adminUserQueues = [];
                
                function loadAdminQueues() {
                    $.post(ajaxurl, {
                        action: 'twp_get_agent_queues',
                        nonce: '<?php echo wp_create_nonce('twp_ajax_nonce'); ?>'
                    }, function(response) {
                        if (response.success) {
                            adminUserQueues = response.data;
                            displayAdminQueues();
                        } else {
                            $('#admin-queue-list').html('<div class="queue-error">Failed to load queues: ' + response.data + '</div>');
                        }
                    }).fail(function() {
                        $('#admin-queue-list').html('<div class="queue-error">Failed to load queues</div>');
                    });
                }
                
                function displayAdminQueues() {
                    var $queueList = $('#admin-queue-list');
                    
                    if (adminUserQueues.length === 0) {
                        $queueList.html('<div class="queue-loading">No queues assigned to you.</div>');
                        return;
                    }
                    
                    var html = '';
                    adminUserQueues.forEach(function(queue) {
                        var hasWaiting = parseInt(queue.current_waiting) > 0;
                        var waitingCount = queue.current_waiting || 0;
                        var queueType = queue.queue_type || 'general';
                        
                        // Generate queue type indicator
                        var typeIndicator = '';
                        var typeDescription = '';
                        if (queueType === 'personal') {
                            typeIndicator = '👤';
                            typeDescription = queue.extension ? ' (Ext: ' + queue.extension + ')' : '';
                        } else if (queueType === 'hold') {
                            typeIndicator = '⏸️';
                            typeDescription = ' (Hold)';
                        } else {
                            typeIndicator = '📋';
                            typeDescription = ' (Team)';
                        }
                        
                        html += '<div class="queue-item queue-type-' + queueType + (hasWaiting ? ' has-calls' : '') + '" data-queue-id="' + queue.id + '">';
                        html += '<div class="queue-info">';
                        html += '<div class="queue-name">';
                        html += '<span class="queue-type-icon">' + typeIndicator + '</span>';
                        html += queue.queue_name + typeDescription;
                        html += '</div>';
                        html += '<div class="queue-details">';
                        html += '<span class="queue-waiting' + (hasWaiting ? ' has-calls' : '') + '">';
                        html += waitingCount + ' waiting';
                        html += '</span>';
                        html += '<span class="queue-capacity">Max: ' + queue.max_size + '</span>';
                        html += '</div>';
                        html += '</div>';
                        html += '<button type="button" class="button button-small accept-queue-call" ';
                        html += 'data-queue-id="' + queue.id + '"';
                        html += (hasWaiting ? '' : ' disabled');
                        html += '>Accept Next Call</button>';
                        html += '</div>';
                    });
                    
                    $queueList.html(html);
                }
                
                // Accept queue call functionality (using event delegation)
                $(document).on('click', '.accept-queue-call', function() {
                    var queueId = $(this).data('queue-id');
                    var $button = $(this);
                    
                    $button.prop('disabled', true).text('Connecting...');
                    
                    $.post(ajaxurl, {
                        action: 'twp_accept_next_queue_call',
                        queue_id: queueId,
                        nonce: '<?php echo wp_create_nonce('twp_ajax_nonce'); ?>'
                    }, function(response) {
                        if (response.success) {
                            showNotice('Connecting to next caller...', 'success');
                            // Refresh queue status after accepting call
                            setTimeout(loadAdminQueues, 1000);
                        } else {
                            showNotice(response.data || 'No calls waiting in this queue', 'info');
                        }
                    }).fail(function() {
                        showNotice('Failed to accept queue call', 'error');
                    }).always(function() {
                        $button.prop('disabled', false).text('Accept Next Call');
                    });
                });
                
                // Refresh queues button
                $('#admin-refresh-queues').on('click', function() {
                    loadAdminQueues();
                });
                
                // Load queue status on page load and refresh every 5 seconds
                loadAdminQueues();
                setInterval(loadAdminQueues, 5000);
                
                // Save mode button
                $('#save-mode-btn').on('click', function() {
                    var button = $(this);
                    var selectedMode = $('input[name="call_mode"]:checked').val();
                    
                    button.prop('disabled', true).text('Saving...');
                    
                    $.post(ajaxurl, {
                        action: 'twp_save_call_mode',
                        mode: selectedMode,
                        nonce: '<?php echo wp_create_nonce('twp_ajax_nonce'); ?>'
                    }, function(response) {
                        if (response.success) {
                            var modeText = selectedMode === 'browser' ? '💻 Browser Phone' : '📱 Cell Phone';
                            $('#mode-text').text(modeText).css('color', '#333');
                            $('#save-mode-btn').hide();
                            
                            // Show success message
                            var successMsg = $('<div class="notice notice-success" style="margin: 10px 0; padding: 10px;"><p>Call mode updated successfully!</p></div>');
                            $('.mode-status').after(successMsg);
                            setTimeout(function() {
                                successMsg.fadeOut();
                            }, 3000);
                        } else {
                            alert('Failed to save mode: ' + (response.error || 'Unknown error'));
                        }
                    }).fail(function() {
                        alert('Failed to save mode. Please try again.');
                    }).always(function() {
                        button.prop('disabled', false).text('Save Changes');
                    });
                });
                
                // Admin call control functions
                var adminIsOnHold = false;
                var adminIsRecording = false;
                var adminRecordingSid = null;
                
                function adminToggleHold() {
                    if (!currentCall) return;
                    
                    var callSid = currentCall.parameters.CallSid || currentCall.customParameters.CallSid;
                    var $holdBtn = $('#admin-hold-btn');
                    
                    $.post(ajaxurl, {
                        action: 'twp_toggle_hold',
                        call_sid: callSid,
                        hold: !adminIsOnHold,
                        nonce: '<?php echo wp_create_nonce('twp_ajax_nonce'); ?>'
                    }, function(response) {
                        if (response.success) {
                            adminIsOnHold = !adminIsOnHold;
                            if (adminIsOnHold) {
                                $holdBtn.html('<span class="dashicons dashicons-controls-play"></span> Unhold').addClass('btn-active');
                                showNotice('Call placed on hold', 'info');
                            } else {
                                $holdBtn.html('<span class="dashicons dashicons-controls-pause"></span> Hold').removeClass('btn-active');
                                showNotice('Call resumed', 'info');
                            }
                        } else {
                            showNotice('Failed to toggle hold: ' + (response.data || 'Unknown error'), 'error');
                        }
                    }).fail(function() {
                        showNotice('Failed to toggle hold', 'error');
                    });
                }
                
                function adminShowTransferDialog() {
                    if (!currentCall) return;
                    
                    // Try enhanced transfer system first
                    $.post(ajaxurl, {
                        action: 'twp_get_transfer_targets',
                        nonce: '<?php echo wp_create_nonce('twp_ajax_nonce'); ?>'
                    }, function(response) {
                        if (response.success && response.data && (response.data.users || response.data.queues)) {
                            adminShowEnhancedTransferDialog(response.data);
                        } else {
                            // Fallback to legacy system
                            $.post(ajaxurl, {
                                action: 'twp_get_online_agents',
                                nonce: '<?php echo wp_create_nonce('twp_ajax_nonce'); ?>'
                            }, function(legacyResponse) {
                                if (legacyResponse.success && legacyResponse.data.length > 0) {
                                    adminShowAgentTransferDialog(legacyResponse.data);
                                } else {
                                    adminShowManualTransferDialog();
                                }
                            }).fail(function() {
                                adminShowManualTransferDialog();
                            });
                        }
                    }).fail(function() {
                        adminShowManualTransferDialog();
                    });
                }
                
                function adminShowEnhancedTransferDialog(data) {
                    var agentOptions = '<div class="agent-list" style="max-height: 300px; overflow-y: auto; border: 1px solid #ccc; margin: 10px 0; padding: 10px;">';
                    
                    // Add users with extensions
                    if (data.users && data.users.length > 0) {
                        agentOptions += '<div class="transfer-section" style="margin-bottom: 20px;"><h4 style="margin: 0 0 10px 0; color: #333;">Transfer to Agent</h4>';
                        data.users.forEach(function(user) {
                            var statusClass = user.is_logged_in ? 'available' : 'offline';
                            var statusText = user.is_logged_in ? '🟢 Online' : '🔴 Offline';
                            var statusColor = user.is_logged_in ? '#28a745' : '#dc3545';
                            
                            agentOptions += '<div class="agent-option" style="padding: 10px; border: 1px solid #ddd; border-radius: 4px; margin-bottom: 8px; cursor: pointer; background: white;" data-agent-id="' + user.user_id + '" data-transfer-type="extension" data-transfer-target="' + user.extension + '">';
                            agentOptions += '<div style="display: flex; justify-content: space-between; align-items: center;">';
                            agentOptions += '<div><strong>' + user.display_name + '</strong><br><small>Ext: ' + user.extension + '</small></div>';
                            agentOptions += '<div style="color: ' + statusColor + ';">' + statusText + '</div>';
                            agentOptions += '</div>';
                            agentOptions += '</div>';
                        });
                        agentOptions += '</div>';
                    }
                    
                    // Add general queues
                    if (data.queues && data.queues.length > 0) {
                        agentOptions += '<div class="transfer-section" style="margin-bottom: 20px;"><h4 style="margin: 0 0 10px 0; color: #333;">Transfer to Queue</h4>';
                        data.queues.forEach(function(queue) {
                            agentOptions += '<div class="queue-option" style="padding: 10px; border: 1px solid #ddd; border-radius: 4px; margin-bottom: 8px; cursor: pointer; background: white;" data-queue-id="' + queue.id + '" data-transfer-type="queue" data-transfer-target="' + queue.id + '">';
                            agentOptions += '<div style="display: flex; justify-content: space-between; align-items: center;">';
                            agentOptions += '<div><strong>' + queue.queue_name + '</strong></div>';
                            agentOptions += '<div style="color: #666;">' + queue.waiting_calls + ' waiting</div>';
                            agentOptions += '</div>';
                            agentOptions += '</div>';
                        });
                        agentOptions += '</div>';
                    }
                    
                    agentOptions += '</div>';
                    
                    var dialogHtml = '<div id="admin-transfer-dialog" style="position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%); background: white; padding: 20px; border: 1px solid #ccc; box-shadow: 0 4px 20px rgba(0,0,0,0.3); z-index: 10000; width: 450px; max-height: 80vh; overflow-y: auto;">';
                    dialogHtml += '<h3 style="margin: 0 0 15px 0;">Transfer Call</h3>';
                    dialogHtml += '<p>Select an agent or queue:</p>';
                    dialogHtml += agentOptions;
                    dialogHtml += '<div class="manual-section" style="border-top: 1px solid #ddd; padding-top: 15px; margin-top: 15px;">';
                    dialogHtml += '<h4 style="margin: 0 0 8px 0;">Manual Transfer</h4>';
                    dialogHtml += '<p style="margin: 0 0 10px 0; font-size: 13px; color: #666;">Or enter extension or phone number:</p>';
                    dialogHtml += '<input type="text" id="admin-transfer-manual" placeholder="Extension (100) or Phone (+1234567890)" style="width: 100%; margin: 10px 0; padding: 8px; border: 1px solid #ddd; border-radius: 3px;" />';
                    dialogHtml += '</div>';
                    dialogHtml += '<div style="text-align: right; margin-top: 20px;">';
                    dialogHtml += '<button id="admin-confirm-transfer" class="button button-primary" style="margin-right: 10px;" disabled>Transfer</button>';
                    dialogHtml += '<button id="admin-cancel-transfer" class="button">Cancel</button>';
                    dialogHtml += '</div>';
                    dialogHtml += '</div>';
                    dialogHtml += '<div id="admin-transfer-overlay" style="position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.5); z-index: 9999;"></div>';
                    
                    $('body').append(dialogHtml);
                    
                    var selectedTransfer = null;
                    
                    $('.agent-option, .queue-option').on('click', function() {
                        $('.agent-option, .queue-option').css('background', 'white');
                        $(this).css('background', '#e7f3ff');
                        
                        selectedTransfer = {
                            type: $(this).data('transfer-type'),
                            target: $(this).data('transfer-target'),
                            agentId: $(this).data('agent-id'),
                            queueId: $(this).data('queue-id')
                        };
                        
                        $('#admin-transfer-manual').val('');
                        $('#admin-confirm-transfer').prop('disabled', false);
                    });
                    
                    $('#admin-transfer-manual').on('input', function() {
                        var input = $(this).val().trim();
                        if (input) {
                            $('.agent-option, .queue-option').css('background', 'white');
                            
                            // Determine if it's an extension or phone number
                            var transferType, transferTarget;
                            if (/^\d{3,4}$/.test(input)) {
                                transferType = 'extension';
                                transferTarget = input;
                            } else {
                                transferType = 'phone';
                                transferTarget = input;
                            }
                            
                            selectedTransfer = { type: transferType, target: transferTarget };
                            $('#admin-confirm-transfer').prop('disabled', false);
                        } else {
                            $('#admin-confirm-transfer').prop('disabled', !selectedTransfer);
                        }
                    });
                    
                    $('#admin-confirm-transfer').on('click', function() {
                        console.log('Transfer button clicked, selectedTransfer:', selectedTransfer);
                        if (selectedTransfer) {
                            console.log('Calling adminTransferToTarget with:', selectedTransfer.type, selectedTransfer.target);
                            adminTransferToTarget(selectedTransfer.type, selectedTransfer.target);
                        } else {
                            console.error('No transfer selected');
                            alert('Please select a transfer target first');
                        }
                    });
                    
                    $('#admin-cancel-transfer, #admin-transfer-overlay').on('click', function() {
                        adminHideTransferDialog();
                    });
                }
                
                function adminShowAgentTransferDialog(agents) {
                    var agentOptions = '<div class="agent-list" style="max-height: 200px; overflow-y: auto; border: 1px solid #ccc; margin: 10px 0;">';
                    
                    agents.forEach(function(agent) {
                        var statusClass = agent.is_available ? 'available' : 'busy';
                        var statusText = agent.is_available ? '🟢 Available' : '🔴 Busy';
                        var methodIcon = agent.has_phone ? '📱' : '💻';
                        
                        agentOptions += '<div class="agent-option" style="padding: 10px; border-bottom: 1px solid #eee; cursor: pointer; display: flex; justify-content: space-between;" data-agent-id="' + agent.id + '" data-transfer-method="' + agent.transfer_method + '" data-transfer-value="' + agent.transfer_value + '">';
                        agentOptions += '<div><strong>' + agent.name + '</strong> ' + methodIcon + '</div>';
                        agentOptions += '<div>' + statusText + '</div>';
                        agentOptions += '</div>';
                    });
                    
                    agentOptions += '</div>';
                    
                    var dialogHtml = '<div id="admin-transfer-dialog" style="position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%); background: white; padding: 20px; border: 1px solid #ccc; box-shadow: 0 4px 20px rgba(0,0,0,0.3); z-index: 10000; width: 400px;">';
                    dialogHtml += '<h3>Transfer Call to Agent</h3>';
                    dialogHtml += '<p>Select an agent to transfer this call to:</p>';
                    dialogHtml += agentOptions;
                    dialogHtml += '<p>Or enter phone number manually:</p>';
                    dialogHtml += '<input type="tel" id="admin-transfer-manual" placeholder="+1234567890" style="width: 100%; margin: 10px 0; padding: 8px;" />';
                    dialogHtml += '<div style="text-align: right; margin-top: 15px;">';
                    dialogHtml += '<button id="admin-confirm-transfer" class="button button-primary" style="margin-right: 10px;" disabled>Transfer</button>';
                    dialogHtml += '<button id="admin-cancel-transfer" class="button">Cancel</button>';
                    dialogHtml += '</div>';
                    dialogHtml += '</div>';
                    dialogHtml += '<div id="admin-transfer-overlay" style="position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.5); z-index: 9999;"></div>';
                    
                    $('body').append(dialogHtml);
                    
                    var selectedAgent = null;
                    
                    $('.agent-option').on('click', function() {
                        $('.agent-option').css('background', '');
                        $(this).css('background', '#e7f3ff');
                        selectedAgent = {
                            id: $(this).data('agent-id'),
                            method: $(this).data('transfer-method'),
                            value: $(this).data('transfer-value')
                        };
                        $('#admin-transfer-manual').val('');
                        $('#admin-confirm-transfer').prop('disabled', false);
                    });
                    
                    $('#admin-transfer-manual').on('input', function() {
                        var number = $(this).val().trim();
                        if (number) {
                            $('.agent-option').css('background', '');
                            selectedAgent = null;
                            $('#admin-confirm-transfer').prop('disabled', false);
                        } else {
                            $('#admin-confirm-transfer').prop('disabled', !selectedAgent);
                        }
                    });
                    
                    $('#admin-confirm-transfer').on('click', function() {
                        var manualNumber = $('#admin-transfer-manual').val().trim();
                        if (manualNumber) {
                            adminTransferCall(manualNumber);
                        } else if (selectedAgent) {
                            adminTransferToAgent(selectedAgent);
                        }
                    });
                    
                    $('#admin-cancel-transfer, #admin-transfer-overlay').on('click', function() {
                        adminHideTransferDialog();
                    });
                }
                
                function adminShowManualTransferDialog() {
                    var dialogHtml = '<div id="admin-transfer-dialog" style="position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%); background: white; padding: 20px; border: 1px solid #ccc; box-shadow: 0 4px 20px rgba(0,0,0,0.3); z-index: 10000;">';
                    dialogHtml += '<h3>Transfer Call</h3>';
                    dialogHtml += '<p>Enter the phone number to transfer this call:</p>';
                    dialogHtml += '<input type="tel" id="admin-transfer-number" placeholder="+1234567890" style="width: 100%; margin: 10px 0; padding: 8px;" />';
                    dialogHtml += '<div style="text-align: right; margin-top: 15px;">';
                    dialogHtml += '<button id="admin-confirm-transfer" class="button button-primary" style="margin-right: 10px;">Transfer</button>';
                    dialogHtml += '<button id="admin-cancel-transfer" class="button">Cancel</button>';
                    dialogHtml += '</div>';
                    dialogHtml += '</div>';
                    dialogHtml += '<div id="admin-transfer-overlay" style="position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.5); z-index: 9999;"></div>';
                    
                    $('body').append(dialogHtml);
                    
                    $('#admin-confirm-transfer').on('click', function() {
                        var number = $('#admin-transfer-number').val().trim();
                        if (number) {
                            adminTransferCall(number);
                        }
                    });
                    
                    $('#admin-cancel-transfer, #admin-transfer-overlay').on('click', function() {
                        adminHideTransferDialog();
                    });
                }
                
                function adminTransferToTarget(transferType, transferTarget) {
                    console.log('adminTransferToTarget called with:', transferType, transferTarget);
                    
                    if (!currentCall) {
                        console.error('No current call for transfer');
                        alert('No active call to transfer');
                        return;
                    }
                    
                    var callSid = currentCall.parameters.CallSid || 
                                  currentCall.customParameters.CallSid || 
                                  currentCall.outgoingConnectionId ||
                                  currentCall.sid;
                                  
                    console.log('Transfer call SID:', callSid);
                                  
                    if (!callSid) {
                        alert('Unable to identify call for transfer');
                        return;
                    }
                    
                    // Use the correct parameter format expected by ajax_transfer_call
                    var requestData = {
                        action: 'twp_transfer_call',
                        call_sid: callSid,
                        nonce: '<?php echo wp_create_nonce('twp_ajax_nonce'); ?>'
                    };
                    
                    // Determine if it's an extension or phone number
                    if (/^\d{3,4}$/.test(transferTarget)) {
                        // It's an extension - use new format
                        requestData.target_queue_id = transferTarget;
                    } else {
                        // It's a phone number - use legacy format
                        requestData.transfer_type = 'phone';
                        requestData.transfer_target = transferTarget;
                    }
                    
                    console.log('Sending transfer request:', requestData);
                    
                    $.post(ajaxurl, requestData, function(response) {
                        console.log('Transfer response:', response);
                        if (response.success) {
                            alert('Call transferred successfully');
                            adminHideTransferDialog();
                        } else {
                            alert('Failed to transfer call: ' + (response.data || response.error || 'Unknown error'));
                        }
                    }).fail(function(xhr, status, error) {
                        console.error('Transfer request failed:', xhr, status, error);
                        alert('Failed to transfer call - network error');
                    });
                }
                
                function adminTransferCall(phoneNumber) {
                    if (!currentCall) return;
                    
                    var callSid = currentCall.parameters.CallSid || currentCall.customParameters.CallSid;
                    
                    $.post(ajaxurl, {
                        action: 'twp_transfer_call',
                        call_sid: callSid,
                        agent_number: phoneNumber,
                        nonce: '<?php echo wp_create_nonce('twp_ajax_nonce'); ?>'
                    }, function(response) {
                        if (response.success) {
                            showNotice('Call transferred successfully', 'success');
                            adminHideTransferDialog();
                            if (currentCall) {
                                currentCall.disconnect();
                            }
                        } else {
                            showNotice('Failed to transfer call: ' + (response.data || 'Unknown error'), 'error');
                        }
                    }).fail(function() {
                        showNotice('Failed to transfer call', 'error');
                    });
                }
                
                function adminTransferToAgent(agent) {
                    if (!currentCall) return;
                    
                    var callSid = currentCall.parameters.CallSid || currentCall.customParameters.CallSid;
                    
                    $.post(ajaxurl, {
                        action: 'twp_transfer_to_agent_queue',
                        call_sid: callSid,
                        agent_id: agent.id,
                        transfer_method: agent.method,
                        transfer_value: agent.value,
                        nonce: '<?php echo wp_create_nonce('twp_ajax_nonce'); ?>'
                    }, function(response) {
                        if (response.success) {
                            showNotice('Call transferred successfully', 'success');
                            adminHideTransferDialog();
                            if (currentCall) {
                                currentCall.disconnect();
                            }
                        } else {
                            showNotice('Failed to transfer call: ' + (response.data || 'Unknown error'), 'error');
                        }
                    }).fail(function() {
                        showNotice('Failed to transfer call', 'error');
                    });
                }
                
                function adminHideTransferDialog() {
                    $('#admin-transfer-dialog, #admin-transfer-overlay').remove();
                }
                
                function adminShowRequeueDialog() {
                    if (!currentCall) return;
                    
                    $.post(ajaxurl, {
                        action: 'twp_get_all_queues',
                        nonce: '<?php echo wp_create_nonce('twp_ajax_nonce'); ?>'
                    }, function(response) {
                        if (response.success && response.data.length > 0) {
                            var options = '';
                            response.data.forEach(function(queue) {
                                options += '<option value="' + queue.id + '">' + queue.queue_name + '</option>';
                            });
                            
                            var dialogHtml = '<div id="admin-requeue-dialog" style="position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%); background: white; padding: 20px; border: 1px solid #ccc; box-shadow: 0 4px 20px rgba(0,0,0,0.3); z-index: 10000;">';
                            dialogHtml += '<h3>Requeue Call</h3>';
                            dialogHtml += '<p>Select a queue to transfer this call to:</p>';
                            dialogHtml += '<select id="admin-requeue-select" style="width: 100%; margin: 10px 0; padding: 8px;">' + options + '</select>';
                            dialogHtml += '<div style="text-align: right; margin-top: 15px;">';
                            dialogHtml += '<button id="admin-confirm-requeue" class="button button-primary" style="margin-right: 10px;">Requeue</button>';
                            dialogHtml += '<button id="admin-cancel-requeue" class="button">Cancel</button>';
                            dialogHtml += '</div>';
                            dialogHtml += '</div>';
                            dialogHtml += '<div id="admin-requeue-overlay" style="position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.5); z-index: 9999;"></div>';
                            
                            $('body').append(dialogHtml);
                            
                            $('#admin-confirm-requeue').on('click', function() {
                                var queueId = $('#admin-requeue-select').val();
                                if (queueId) {
                                    adminRequeueCall(queueId);
                                }
                            });
                            
                            $('#admin-cancel-requeue, #admin-requeue-overlay').on('click', function() {
                                $('#admin-requeue-dialog, #admin-requeue-overlay').remove();
                            });
                        } else {
                            showNotice('No queues available', 'error');
                        }
                    }).fail(function() {
                        showNotice('Failed to load queues', 'error');
                    });
                }
                
                function adminRequeueCall(queueId) {
                    if (!currentCall) return;
                    
                    var callSid = currentCall.parameters.CallSid || currentCall.customParameters.CallSid;
                    
                    $.post(ajaxurl, {
                        action: 'twp_requeue_call',
                        call_sid: callSid,
                        queue_id: queueId,
                        nonce: '<?php echo wp_create_nonce('twp_ajax_nonce'); ?>'
                    }, function(response) {
                        if (response.success) {
                            showNotice('Call requeued successfully', 'success');
                            $('#admin-requeue-dialog, #admin-requeue-overlay').remove();
                            if (currentCall) {
                                currentCall.disconnect();
                            }
                        } else {
                            showNotice('Failed to requeue call: ' + (response.data || 'Unknown error'), 'error');
                        }
                    }).fail(function() {
                        showNotice('Failed to requeue call', 'error');
                    });
                }
                
                function adminToggleRecording() {
                    if (!currentCall) return;
                    
                    if (adminIsRecording) {
                        adminStopRecording();
                    } else {
                        adminStartRecording();
                    }
                }
                
                function adminStartRecording() {
                    if (!currentCall) {
                        showNotice('No active call to record', 'error');
                        return;
                    }
                    
                    // Try multiple ways to get the call SID for browser phone calls
                    var callSid = currentCall.parameters.CallSid || 
                                  currentCall.customParameters.CallSid || 
                                  currentCall.outgoingConnectionId ||
                                  currentCall.sid;
                    
                    console.log('Current call object:', currentCall);
                    console.log('Attempting to record call SID:', callSid);
                    
                    if (!callSid) {
                        showNotice('Could not determine call SID for recording', 'error');
                        return;
                    }
                    
                    var $recordBtn = $('#admin-record-btn');
                    
                    $.post(ajaxurl, {
                        action: 'twp_start_recording',
                        call_sid: callSid,
                        nonce: '<?php echo wp_create_nonce('twp_ajax_nonce'); ?>'
                    }, function(response) {
                        console.log('Recording start response:', response);
                        if (response.success) {
                            adminIsRecording = true;
                            adminRecordingSid = response.data.recording_sid;
                            console.log('Recording started - SID:', adminRecordingSid, 'Call SID:', response.data.call_sid);
                            $recordBtn.html('<span class="dashicons dashicons-controls-volumeoff"></span> Stop Recording').addClass('btn-active');
                            showNotice('Recording started', 'success');
                        } else {
                            console.error('Recording start failed:', response);
                            showNotice('Failed to start recording: ' + (response.data || 'Unknown error'), 'error');
                        }
                    }).fail(function(xhr, status, error) {
                        console.error('Recording start AJAX failed:', xhr.responseText);
                        showNotice('Failed to start recording: ' + error, 'error');
                    });
                }
                
                function adminStopRecording() {
                    if (!adminRecordingSid) {
                        console.error('No recording SID to stop');
                        showNotice('No recording to stop', 'error');
                        return;
                    }
                    
                    var callSid = currentCall ? (currentCall.parameters.CallSid || currentCall.customParameters.CallSid) : '';
                    var $recordBtn = $('#admin-record-btn');
                    
                    console.log('Stopping recording - SID:', adminRecordingSid, 'Call SID:', callSid);
                    
                    $.post(ajaxurl, {
                        action: 'twp_stop_recording',
                        call_sid: callSid,
                        recording_sid: adminRecordingSid,
                        nonce: '<?php echo wp_create_nonce('twp_ajax_nonce'); ?>'
                    }, function(response) {
                        console.log('Recording stop response:', response);
                        if (response.success) {
                            adminIsRecording = false;
                            adminRecordingSid = null;
                            $recordBtn.html('<span class="dashicons dashicons-controls-volumeon"></span> Record').removeClass('btn-active');
                            showNotice('Recording stopped', 'info');
                        } else {
                            console.error('Recording stop failed:', response);
                            showNotice('Failed to stop recording: ' + (response.data || 'Unknown error'), 'error');
                        }
                    }).fail(function(xhr, status, error) {
                        console.error('Recording stop AJAX failed:', xhr.responseText);
                        showNotice('Failed to stop recording: ' + error, 'error');
                    });
                }
                
                function showNotice(message, type) {
                    var noticeClass = type === 'error' ? 'notice-error' : (type === 'success' ? 'notice-success' : 'notice-info');
                    var notice = $('<div class="notice ' + noticeClass + ' is-dismissible" style="margin: 10px 0;"><p>' + message + '</p></div>');
                    $('.browser-phone-container').prepend(notice);
                    setTimeout(function() {
                        notice.fadeOut();
                    }, 4000);
                }
                
                // Agent status functions for the status bar
                function toggleAgentLogin() {
                    $.ajax({
                        url: ajaxurl,
                        method: 'POST',
                        data: {
                            action: 'twp_toggle_agent_login',
                            nonce: '<?php echo wp_create_nonce('twp_ajax_nonce'); ?>'
                        },
                        success: function(response) {
                            if (response.success) {
                                location.reload();
                            } else {
                                showNotice('Failed to change login status: ' + response.data, 'error');
                            }
                        },
                        error: function() {
                            showNotice('Failed to change login status', 'error');
                        }
                    });
                }
                
                function updateAgentStatus(status) {
                    $.ajax({
                        url: ajaxurl,
                        method: 'POST',
                        data: {
                            action: 'twp_update_agent_status',
                            status: status,
                            nonce: '<?php echo wp_create_nonce('twp_ajax_nonce'); ?>'
                        },
                        success: function(response) {
                            if (response.success) {
                                showNotice('Status updated to ' + status, 'success');
                            } else {
                                showNotice('Failed to update status: ' + response.data, 'error');
                            }
                        },
                        error: function() {
                            showNotice('Failed to update status', 'error');
                        }
                    });
                }
            });
            </script>
        </div>
        <?php
    }
    
    /**
     * Check if smart routing is configured on any phone numbers
     */
    private function check_smart_routing_status() {
        try {
            $twilio = new TWP_Twilio_API();
            $phone_numbers = $twilio->get_phone_numbers();
            
            if (!$phone_numbers['success']) {
                return false;
            }
            
            $smart_routing_url = home_url('/wp-json/twilio-webhook/v1/smart-routing');
            
            foreach ($phone_numbers['data']['incoming_phone_numbers'] as $number) {
                if ($number['voice_url'] === $smart_routing_url) {
                    return true;
                }
            }
            
            return false;
        } catch (Exception $e) {
            error_log('TWP: Error checking smart routing status: ' . $e->getMessage());
            return false;
        }
    }
    
    /**
     * Get user's queue memberships
     */
    private function get_user_queue_memberships($user_id) {
        global $wpdb;
        
        // Get agent groups the user belongs to
        $groups_table = $wpdb->prefix . 'twp_group_members';
        $queues_table = $wpdb->prefix . 'twp_call_queues';
        
        $user_groups = $wpdb->get_results($wpdb->prepare(
            "SELECT gm.group_id, q.id as queue_id, q.queue_name
             FROM $groups_table gm
             JOIN $queues_table q ON gm.group_id = q.agent_group_id
             WHERE gm.user_id = %d",
            $user_id
        ));
        
        $queues = [];
        foreach ($user_groups as $group) {
            $queues[$group->queue_id] = [
                'id' => $group->queue_id,
                'name' => $group->queue_name
            ];
        }
        
        return array_values($queues);
    }
    
    /**
     * Helper function to identify the customer call leg for browser phone calls
     * 
     * @param string $call_sid The call SID to analyze
     * @param TWP_Twilio_API $api Twilio API instance
     * @return string|null The customer call SID or null if not found
     */
    private function find_customer_call_leg($call_sid, $api) {
        try {
            $client = $api->get_client();
            $call = $client->calls($call_sid)->fetch();
            $target_call_sid = null;
            
            error_log("TWP Call Leg Detection: Call SID {$call_sid} - From: {$call->from}, To: {$call->to}, Direction: {$call->direction}, Parent: " . ($call->parentCallSid ?: 'none'));
            
            // For browser phone calls (outbound), we need to find the customer leg
            if (strpos($call->from, 'client:') === 0 || strpos($call->to, 'client:') === 0) {
                error_log("TWP Call Leg Detection: Browser phone call detected");
                
                // This is a browser phone call, find the customer leg
                if ($call->parentCallSid) {
                    // Check parent call
                    try {
                        $parent_call = $client->calls($call->parentCallSid)->fetch();
                        if (strpos($parent_call->from, 'client:') === false && strpos($parent_call->to, 'client:') === false) {
                            $target_call_sid = $parent_call->sid;
                            error_log("TWP Call Leg Detection: Using parent call as customer leg: {$target_call_sid}");
                        }
                    } catch (Exception $e) {
                        error_log("TWP Call Leg Detection: Could not fetch parent call: " . $e->getMessage());
                    }
                }
                
                // If no parent or parent is also client, search for related customer call
                if (!$target_call_sid) {
                    $active_calls = $client->calls->read(['status' => 'in-progress'], 50);
                    foreach ($active_calls as $active_call) {
                        if ($active_call->sid === $call_sid) continue; // Skip current call
                        
                        // Check if calls are related and this one doesn't involve a client
                        $is_related = false;
                        if ($call->parentCallSid && $active_call->parentCallSid === $call->parentCallSid) {
                            $is_related = true;
                        } elseif ($active_call->parentCallSid === $call_sid) {
                            $is_related = true;
                        } elseif ($active_call->sid === $call->parentCallSid) {
                            $is_related = true;
                        }
                        
                        if ($is_related && strpos($active_call->from, 'client:') === false && 
                            strpos($active_call->to, 'client:') === false) {
                            $target_call_sid = $active_call->sid;
                            error_log("TWP Call Leg Detection: Found related customer call: {$target_call_sid}");
                            break;
                        }
                    }
                }
                
                // Store the relationship for future use
                if ($target_call_sid) {
                    error_log("TWP Call Leg Detection: Agent leg {$call_sid} -> Customer leg {$target_call_sid}");
                }
                
            } else {
                // Regular inbound call - current call IS the customer
                $target_call_sid = $call_sid;
                error_log("TWP Call Leg Detection: Regular inbound call, current call is customer");
            }
            
            if (!$target_call_sid) {
                error_log("TWP Call Leg Detection: Could not determine customer leg, using current call as fallback");
                $target_call_sid = $call_sid;
            }
            
            return $target_call_sid;
            
        } catch (Exception $e) {
            error_log("TWP Call Leg Detection Error: " . $e->getMessage());
            return $call_sid; // Fallback to original call
        }
    }
    
    /**
     * AJAX handler for toggling call hold
     */
    public function ajax_toggle_hold() {
        if (!$this->verify_ajax_nonce()) {
            wp_send_json_error('Invalid nonce');
            return;
        }
        
        $call_sid = sanitize_text_field($_POST['call_sid']);
        $hold = filter_var($_POST['hold'], FILTER_VALIDATE_BOOLEAN);
        
        try {
            // Get Twilio API instance
            require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-twp-twilio-api.php';
            $api = new TWP_Twilio_API();
            
            if ($hold) {
                // Put call on hold using Hold Queue system
                error_log("TWP: Putting call on hold - SID: {$call_sid}");
                
                // Use helper function to identify the customer call leg
                $target_call_sid = $this->find_customer_call_leg($call_sid, $api);
                
                // Get current user ID for hold queue management
                $current_user_id = get_current_user_id();
                if (!$current_user_id) {
                    error_log("TWP: Hold failed - no current user");
                    wp_send_json_error('Failed to hold call: No user context');
                    return;
                }
                
                // Use the Hold Queue system to properly hold the call
                require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-twp-user-queue-manager.php';
                
                // Check if user has queues, create them if not
                $extension_data = TWP_User_Queue_Manager::get_user_extension_data($current_user_id);
                if (!$extension_data || !$extension_data['hold_queue_id']) {
                    error_log("TWP: User doesn't have queues, creating them now");
                    $queue_creation = TWP_User_Queue_Manager::create_user_queues($current_user_id);
                    if (!$queue_creation['success']) {
                        error_log("TWP: Failed to create user queues - " . $queue_creation['error']);
                        wp_send_json_error('Failed to create hold queue: ' . $queue_creation['error']);
                        return;
                    }
                    $extension_data = TWP_User_Queue_Manager::get_user_extension_data($current_user_id);
                }
                
                $queue_result = TWP_User_Queue_Manager::transfer_to_hold_queue($current_user_id, $target_call_sid);
                
                if ($queue_result['success']) {
                    // Get the hold queue details
                    global $wpdb;
                    $hold_queue = $wpdb->get_row($wpdb->prepare(
                        "SELECT * FROM {$wpdb->prefix}twp_call_queues WHERE id = %d",
                        $queue_result['hold_queue_id']
                    ));
                    
                    if ($hold_queue) {
                        // Create TwiML for hold experience
                        $twiml = new \Twilio\TwiML\VoiceResponse();
                        
                        // Use TTS helper with caching for hold message
                        $hold_message = $hold_queue->tts_message ?: 'Your call is on hold. Please wait.';
                        
                        require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-twp-tts-helper.php';
                        $tts_helper = TWP_TTS_Helper::get_instance();
                        $tts_helper->add_tts_to_twiml($twiml, $hold_message);
                        
                        // Use default hold music URL or custom one from settings
                        $hold_music_url = get_option('twp_hold_music_url', 'http://com.twilio.sounds.music.s3.amazonaws.com/MARKOVICHAMP-Borghestral.mp3');
                        $twiml->play($hold_music_url, ['loop' => 0]); // Loop indefinitely
                        
                        // Update the customer call leg with hold experience
                        $result = $api->update_call($target_call_sid, [
                            'twiml' => $twiml->asXML()
                        ]);
                        
                        if ($result['success']) {
                            error_log("TWP: Successfully put call on hold in queue - Target: {$target_call_sid} -> Hold Queue: {$queue_result['hold_queue_id']}");
                            wp_send_json_success(array(
                                'message' => 'Call placed on hold',
                                'target_call_sid' => $target_call_sid,
                                'hold_queue_id' => $queue_result['hold_queue_id']
                            ));
                        } else {
                            error_log("TWP: Failed to update call for hold - " . $result['error']);
                            wp_send_json_error('Failed to place call on hold: ' . $result['error']);
                        }
                    } else {
                        error_log("TWP: Hold failed - hold queue not found: " . $queue_result['hold_queue_id']);
                        wp_send_json_error('Failed to hold call: Hold queue not found');
                    }
                } else {
                    error_log("TWP: Failed to transfer to hold queue - " . $queue_result['error']);
                    wp_send_json_error('Failed to hold call: ' . $queue_result['error']);
                }
                
            } else {
                // Resume call from hold queue
                error_log("TWP: Resuming call from hold - SID: {$call_sid}");
                
                // Use helper function to identify the customer call leg
                $target_call_sid = $this->find_customer_call_leg($call_sid, $api);
                
                // Get current user ID for hold queue management
                $current_user_id = get_current_user_id();
                if (!$current_user_id) {
                    error_log("TWP: Resume failed - no current user");
                    wp_send_json_error('Failed to resume call: No user context');
                    return;
                }
                
                // Use the Hold Queue system to properly resume the call
                require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-twp-user-queue-manager.php';
                
                // Check if user has queues, create them if not  
                $extension_data = TWP_User_Queue_Manager::get_user_extension_data($current_user_id);
                if (!$extension_data || !$extension_data['hold_queue_id']) {
                    error_log("TWP: User doesn't have queues for resume, creating them now");
                    $queue_creation = TWP_User_Queue_Manager::create_user_queues($current_user_id);
                    if (!$queue_creation['success']) {
                        error_log("TWP: Failed to create user queues - " . $queue_creation['error']);
                        wp_send_json_error('Failed to create queues: ' . $queue_creation['error']);
                        return;
                    }
                    $extension_data = TWP_User_Queue_Manager::get_user_extension_data($current_user_id);
                }
                
                $queue_result = TWP_User_Queue_Manager::resume_from_hold($current_user_id, $target_call_sid);
                
                if ($queue_result['success']) {
                    // Get the target queue details to redirect the call properly
                    global $wpdb;
                    $queue = $wpdb->get_row($wpdb->prepare(
                        "SELECT * FROM {$wpdb->prefix}twp_call_queues WHERE id = %d",
                        $queue_result['target_queue_id']
                    ));
                    
                    if ($queue) {
                        // Create TwiML to redirect to the target queue
                        $twiml = new \Twilio\TwiML\VoiceResponse();
                        
                        // If it's a personal queue, try to connect directly to agent
                        if ($queue->queue_type === 'personal') {
                            // Use TTS helper for ElevenLabs support
                            require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-twp-tts-helper.php';
                            $tts_helper = TWP_TTS_Helper::get_instance();
                            $tts_helper->add_tts_to_twiml($twiml, 'Resuming your call.');
                            
                            // Get the agent's phone number
                            $agent_number = get_user_meta($current_user_id, 'twp_phone_number', true);
                            if ($agent_number) {
                                $dial = $twiml->dial(['timeout' => 30]);
                                $dial->number($agent_number);
                            } else {
                                // Use TTS helper for error message
                                $tts_helper->add_tts_to_twiml($twiml, 'Unable to locate agent. Please try again.');
                                $twiml->hangup();
                            }
                        } else {
                            // Regular queue - redirect to queue wait
                            $queue_wait_url = home_url('/wp-json/twilio-webhook/v1/queue-wait');
                            $queue_wait_url = add_query_arg(array(
                                'queue_id' => $queue_result['target_queue_id']
                            ), $queue_wait_url);
                            
                            $twiml->redirect($queue_wait_url, ['method' => 'POST']);
                        }
                        
                        // Update the customer call leg with resume TwiML
                        $result = $api->update_call($target_call_sid, [
                            'twiml' => $twiml->asXML()
                        ]);
                        
                        if ($result['success']) {
                            error_log("TWP: Successfully resumed call from hold queue - Target: {$target_call_sid} -> Queue: {$queue_result['target_queue_id']}");
                            wp_send_json_success(array(
                                'message' => 'Call resumed from hold',
                                'target_call_sid' => $target_call_sid,
                                'target_queue_id' => $queue_result['target_queue_id']
                            ));
                        } else {
                            error_log("TWP: Failed to update call for resume - " . $result['error']);
                            wp_send_json_error('Failed to resume call: ' . $result['error']);
                        }
                    } else {
                        error_log("TWP: Resume failed - target queue not found: " . $queue_result['target_queue_id']);
                        wp_send_json_error('Failed to resume call: Target queue not found');
                    }
                } else {
                    error_log("TWP: Failed to resume from hold queue - " . $queue_result['error']);
                    wp_send_json_error('Failed to resume call: ' . $queue_result['error']);
                }
            }
            
        } catch (Exception $e) {
            error_log("TWP Hold Error: " . $e->getMessage());
            wp_send_json_error('Hold operation failed: ' . $e->getMessage());
        }
    }
    
    /**
     * AJAX handler for getting available agents for transfer
     */
    public function ajax_get_transfer_agents() {
        if (!$this->verify_ajax_nonce()) {
            wp_send_json_error('Invalid nonce');
            return;
        }
        
        global $wpdb;
        $users_table = $wpdb->prefix . 'users';
        $usermeta_table = $wpdb->prefix . 'usermeta';
        $status_table = $wpdb->prefix . 'twp_agent_status';
        
        // Get all users with the twp_access_browser_phone capability or admins
        $all_users = get_users([
            'orderby' => 'display_name',
            'order' => 'ASC'
        ]);
        
        $agents = [];
        $current_user_id = get_current_user_id();
        
        foreach ($all_users as $user) {
            // Skip current user
            if ($user->ID == $current_user_id) {
                continue;
            }
            
            // Check if user can access browser phone or is admin
            if (!user_can($user->ID, 'twp_access_browser_phone') && !user_can($user->ID, 'manage_options')) {
                continue;
            }
            
            // Get user's phone number
            $phone_number = get_user_meta($user->ID, 'twp_phone_number', true);
            
            // Get user's status
            $status = $wpdb->get_var($wpdb->prepare(
                "SELECT status FROM $status_table WHERE user_id = %d",
                $user->ID
            ));
            
            $agents[] = [
                'id' => $user->ID,
                'name' => $user->display_name,
                'phone' => $phone_number,
                'status' => $status ?: 'offline',
                'has_phone' => !empty($phone_number),
                'queue_name' => 'agent_' . $user->ID // Personal queue name
            ];
        }
        
        wp_send_json_success($agents);
    }
    
    /**
     * AJAX handler for transferring a call
     */
    public function ajax_transfer_call() {
        // Check nonce - try frontend first, then admin
        $nonce_valid = wp_verify_nonce($_POST['nonce'] ?? '', 'twp_frontend_nonce') || 
                       wp_verify_nonce($_POST['nonce'] ?? '', 'twp_ajax_nonce');
                       
        if (!$nonce_valid) {
            wp_send_json_error('Invalid nonce');
            return;
        }
        
        // Check user permissions - require admin access or agent queue access
        if (!current_user_can('manage_options') && !current_user_can('twp_access_agent_queue')) {
            wp_send_json_error('Unauthorized - Admin or agent access required');
            return;
        }
        
        $call_sid = sanitize_text_field($_POST['call_sid']);
        
        // Handle both old and new parameter formats
        if (isset($_POST['target_queue_id'])) {
            // New format from enhanced queue system
            $current_queue_id = isset($_POST['current_queue_id']) ? intval($_POST['current_queue_id']) : null;
            $target = sanitize_text_field($_POST['target_queue_id']); // Can be queue ID or extension
        } else {
            // Legacy format
            $transfer_type = sanitize_text_field($_POST['transfer_type'] ?? 'queue');
            $target = sanitize_text_field($_POST['transfer_target'] ?? '');
        }
        
        try {
            $twilio = new TWP_Twilio_API();
            global $wpdb;
            
            // Check if target is an extension (3-4 digits)
            if (is_numeric($target) && strlen($target) <= 4) {
                // It's an extension, find the user's queue
                $user_id = TWP_User_Queue_Manager::get_user_by_extension($target);
                
                error_log("TWP Transfer: Looking up extension {$target}, found user_id: " . ($user_id ?: 'none'));
                
                if (!$user_id) {
                    wp_send_json_error('Extension not found');
                    return;
                }
                
                $extension_data = TWP_User_Queue_Manager::get_user_extension_data($user_id);
                $target_queue_id = $extension_data['personal_queue_id'];
                
                // Find customer call leg for transfer FIRST (important for outbound calls)
                $customer_call_sid = $this->find_customer_call_leg($call_sid, $twilio);
                error_log("TWP Transfer: Using customer call leg {$customer_call_sid} for extension transfer (original: {$call_sid})");
                
                // Move call to new queue using the CUSTOMER call SID for proper tracking
                $next_position = $wpdb->get_var($wpdb->prepare(
                    "SELECT COALESCE(MAX(position), 0) + 1 FROM {$wpdb->prefix}twp_queued_calls 
                     WHERE queue_id = %d AND status = 'waiting'",
                    $target_queue_id
                ));
                
                // First check if call already exists in queue table
                $existing_call = $wpdb->get_row($wpdb->prepare(
                    "SELECT * FROM {$wpdb->prefix}twp_queued_calls WHERE call_sid = %s",
                    $customer_call_sid
                ));
                
                if ($existing_call) {
                    // Update existing call record
                    $result = $wpdb->update(
                        $wpdb->prefix . 'twp_queued_calls',
                        array(
                            'queue_id' => $target_queue_id,
                            'position' => $next_position,
                            'status' => 'waiting'
                        ),
                        array('call_sid' => $customer_call_sid),
                        array('%d', '%d', '%s'),
                        array('%s')
                    );
                } else {
                    // Get call details from Twilio for new record
                    $client = $twilio->get_client();
                    try {
                        $call = $client->calls($customer_call_sid)->fetch();
                        $from_number = $call->from;
                        $to_number = $call->to;
                    } catch (Exception $e) {
                        error_log("TWP Transfer: Could not fetch call details: " . $e->getMessage());
                        $from_number = '';
                        $to_number = '';
                    }
                    
                    // Insert new call record
                    $insert_data = array(
                        'queue_id' => $target_queue_id,
                        'call_sid' => $customer_call_sid,
                        'from_number' => $from_number,
                        'to_number' => $to_number,
                        'position' => $next_position,
                        'status' => 'waiting'
                    );
                    
                    // Check if enqueued_at column exists
                    $calls_table = $wpdb->prefix . 'twp_queued_calls';
                    $columns = $wpdb->get_col("DESCRIBE $calls_table");
                    if (in_array('enqueued_at', $columns)) {
                        $insert_data['enqueued_at'] = current_time('mysql');
                    } else {
                        $insert_data['joined_at'] = current_time('mysql');
                    }
                    
                    $result = $wpdb->insert($calls_table, $insert_data);
                }
                
                if ($result !== false) {
                    
                    // Check if target user is logged in and available using proper agent manager
                    require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-twp-agent-manager.php';
                    $is_logged_in = TWP_Agent_Manager::is_agent_logged_in($user_id);
                    $agent_status = TWP_Agent_Manager::get_agent_status($user_id);
                    $is_available = $is_logged_in && ($agent_status && $agent_status->status === 'available');
                    
                    error_log("TWP Transfer: Extension {$target} to User {$user_id} - Logged in: " . ($is_logged_in ? 'yes' : 'no') . ", Status: " . ($agent_status ? $agent_status->status : 'unknown') . ", Available: " . ($is_available ? 'yes' : 'no'));
                    
                    // Get target user details
                    $target_user = get_user_by('id', $user_id);
                    $agent_phone = get_user_meta($user_id, 'twp_phone_number', true);
                    
                    // Create TwiML for extension transfer with timeout and voicemail
                    $twiml = new \Twilio\TwiML\VoiceResponse();
                    
                    // Use TTS helper for ElevenLabs support
                    require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-twp-tts-helper.php';
                    $tts_helper = TWP_TTS_Helper::get_instance();
                    $tts_helper->add_tts_to_twiml($twiml, 'Transferring to extension ' . $target . '. Please hold.');
                    
                    if ($is_available || $is_logged_in) {
                        // Agent is logged in - place call in their personal queue with 2-minute timeout
                        error_log("TWP Transfer: Agent {$user_id} is logged in, placing call in personal queue with timeout");
                        
                        // Redirect to queue wait with timeout
                        $queue_wait_url = home_url('/wp-json/twilio-webhook/v1/queue-wait');
                        $queue_wait_url = add_query_arg(array(
                            'queue_id' => $target_queue_id,
                            'call_sid' => $customer_call_sid,
                            'timeout' => 120, // 2 minutes
                            'timeout_action' => home_url('/wp-json/twilio-webhook/v1/extension-voicemail?user_id=' . $user_id . '&extension=' . $target)
                        ), $queue_wait_url);
                        
                        $twiml->redirect($queue_wait_url, ['method' => 'POST']);
                    } else {
                        // Agent is offline or no phone configured - go straight to voicemail
                        error_log("TWP Transfer: Agent {$user_id} is offline or has no phone, sending to voicemail");
                        
                        // Get voicemail prompt from personal queue settings
                        $personal_queue = $wpdb->get_row($wpdb->prepare(
                            "SELECT * FROM {$wpdb->prefix}twp_call_queues WHERE id = %d",
                            $target_queue_id
                        ));
                        
                        $voicemail_prompt = $personal_queue && $personal_queue->voicemail_prompt 
                            ? $personal_queue->voicemail_prompt 
                            : sprintf('%s is not available. Please leave a message after the tone.', $target_user->display_name);
                        
                        $tts_helper->add_tts_to_twiml($twiml, $voicemail_prompt);
                        
                        // Record voicemail with proper callback to save to database
                        $twiml->record([
                            'action' => home_url('/wp-json/twilio-webhook/v1/voicemail-callback?user_id=' . $user_id),
                            'maxLength' => 120, // 2 minutes max
                            'playBeep' => true,
                            'transcribe' => true,
                            'transcribeCallback' => home_url('/wp-json/twilio-webhook/v1/transcription?user_id=' . $user_id)
                        ]);
                    }
                    
                    // Update the customer call with proper TwiML
                    $result = $twilio->update_call($customer_call_sid, array(
                        'twiml' => $twiml->asXML()
                    ));
                    
                    if ($result['success']) {
                        wp_send_json_success(['message' => 'Call transferred to extension ' . $target]);
                    } else {
                        wp_send_json_error('Failed to transfer call: ' . $result['error']);
                    }
                } else {
                    wp_send_json_error('Failed to transfer call to queue');
                }
                
            } elseif (is_numeric($target) && strlen($target) > 4) {
                // It's a queue ID
                $target_queue_id = intval($target);
                
                // Move call to new queue
                $next_position = $wpdb->get_var($wpdb->prepare(
                    "SELECT COALESCE(MAX(position), 0) + 1 FROM {$wpdb->prefix}twp_queued_calls 
                     WHERE queue_id = %d AND status = 'waiting'",
                    $target_queue_id
                ));
                
                $result = $wpdb->update(
                    $wpdb->prefix . 'twp_queued_calls',
                    array(
                        'queue_id' => $target_queue_id,
                        'position' => $next_position
                    ),
                    array('call_sid' => $call_sid),
                    array('%d', '%d'),
                    array('%s')
                );
                
                if ($result !== false) {
                    // Find customer call leg for transfer (important for outbound calls)
                    $customer_call_sid = $this->find_customer_call_leg($call_sid, $twilio);
                    error_log("TWP Transfer: Using customer call leg {$customer_call_sid} for queue transfer (original: {$call_sid})");
                    
                    // Create TwiML to redirect call to queue
                    $twiml = new \Twilio\TwiML\VoiceResponse();
                    
                    // Use TTS helper for ElevenLabs support
                    require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-twp-tts-helper.php';
                    $tts_helper = TWP_TTS_Helper::get_instance();
                    $tts_helper->add_tts_to_twiml($twiml, 'Transferring your call. Please hold.');
                    
                    // Redirect to queue wait endpoint
                    $queue_wait_url = home_url('/wp-json/twilio-webhook/v1/queue-wait');
                    $queue_wait_url = add_query_arg(array(
                        'queue_id' => $target_queue_id,
                        'call_sid' => $customer_call_sid
                    ), $queue_wait_url);
                    
                    $twiml->redirect($queue_wait_url, ['method' => 'POST']);
                    
                    // Update the customer call with proper TwiML
                    $result = $twilio->update_call($customer_call_sid, array(
                        'twiml' => $twiml->asXML()
                    ));
                    
                    if ($result['success']) {
                        wp_send_json_success(['message' => 'Call transferred to queue']);
                    } else {
                        wp_send_json_error('Failed to transfer call: ' . $result['error']);
                    }
                } else {
                    wp_send_json_error('Failed to update queue database');
                }
                
            } else {
                // Transfer to phone number or client endpoint
                
                // Check if it's a client endpoint (browser phone)
                if (strpos($target, 'client:') === 0) {
                    // Extract agent name from client identifier
                    $agent_name = substr($target, 7); // Remove 'client:' prefix
                    
                    // Create TwiML for client transfer
                    $twiml = new \Twilio\TwiML\VoiceResponse();
                    
                    // Use TTS helper for ElevenLabs support
                    require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-twp-tts-helper.php';
                    $tts_helper = TWP_TTS_Helper::get_instance();
                    $tts_helper->add_tts_to_twiml($twiml, 'Transferring your call to ' . $agent_name . '. Please hold.');
                    
                    // Use Dial with client endpoint
                    $dial = $twiml->dial();
                    $dial->client($agent_name);
                    
                    $twiml_xml = $twiml->asXML();
                    
                    // Find customer call leg for transfer (important for outbound calls)
                    $customer_call_sid = $this->find_customer_call_leg($call_sid, $twilio);
                    error_log("TWP Transfer: Using customer call leg {$customer_call_sid} for client transfer (original: {$call_sid})");
                    
                    // Update the customer call with the transfer TwiML
                    $client = $twilio->get_client();
                    $call = $client->calls($customer_call_sid)->update([
                        'twiml' => $twiml_xml
                    ]);
                    
                    wp_send_json_success(['message' => 'Call transferred to agent ' . $agent_name]);
                    
                } elseif (preg_match('/^\+?[1-9]\d{1,14}$/', $target)) {
                    // Transfer to phone number
                    $twiml = new \Twilio\TwiML\VoiceResponse();
                    
                    // Use TTS helper for ElevenLabs support
                    require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-twp-tts-helper.php';
                    $tts_helper = TWP_TTS_Helper::get_instance();
                    $tts_helper->add_tts_to_twiml($twiml, 'Transferring your call. Please hold.');
                    $twiml->dial($target);
                    $twiml_xml = $twiml->asXML();
                    
                    // Find customer call leg for transfer (important for outbound calls)
                    $customer_call_sid = $this->find_customer_call_leg($call_sid, $twilio);
                    error_log("TWP Transfer: Using customer call leg {$customer_call_sid} for phone transfer (original: {$call_sid})");
                    
                    // Update the customer call with the transfer TwiML
                    $client = $twilio->get_client();
                    $call = $client->calls($customer_call_sid)->update([
                        'twiml' => $twiml_xml
                    ]);
                    
                    wp_send_json_success(['message' => 'Call transferred to ' . $target]);
                } else {
                    wp_send_json_error('Invalid transfer target format. Expected phone number or client endpoint.');
                }
            }
            
        } catch (Exception $e) {
            wp_send_json_error('Failed to transfer call: ' . $e->getMessage());
        }
    }
    
    /**
     * AJAX handler for requeuing a call
     */
    public function ajax_requeue_call() {
        // Check nonce - try frontend first, then admin
        $nonce_valid = wp_verify_nonce($_POST['nonce'] ?? '', 'twp_frontend_nonce') || 
                       wp_verify_nonce($_POST['nonce'] ?? '', 'twp_ajax_nonce');
                       
        if (!$nonce_valid) {
            wp_send_json_error('Invalid nonce');
            return;
        }
        
        // Check user permissions - require admin access or agent queue access
        if (!current_user_can('manage_options') && !current_user_can('twp_access_agent_queue')) {
            error_log('TWP Plugin: Permission check failed for requeue');
            wp_send_json_error('Unauthorized - Admin or agent access required');
            return;
        }
        
        $call_sid = sanitize_text_field($_POST['call_sid']);
        $queue_id = intval($_POST['queue_id']);
        
        // Validate queue exists
        global $wpdb;
        $queue_table = $wpdb->prefix . 'twp_call_queues';
        $queue = $wpdb->get_row($wpdb->prepare(
            "SELECT * FROM $queue_table WHERE id = %d",
            $queue_id
        ));
        
        if (!$queue) {
            wp_send_json_error('Invalid queue');
            return;
        }
        
        try {
            $twilio = new TWP_Twilio_API();
            $client = $twilio->get_client();
            
            // Find the customer call leg for requeue (important for outbound calls)
            $customer_call_sid = $this->find_customer_call_leg($call_sid, $twilio);
            error_log("TWP Requeue: Using customer call leg {$customer_call_sid} for requeue (original: {$call_sid})");
            
            // Create proper TwiML using VoiceResponse
            $twiml = new \Twilio\TwiML\VoiceResponse();
            
            // Use TTS helper for ElevenLabs support
            require_once plugin_dir_path(dirname(__FILE__)) . 'includes/class-twp-tts-helper.php';
            $tts_helper = TWP_TTS_Helper::get_instance();
            $tts_helper->add_tts_to_twiml($twiml, 'Placing you back in the queue. Please hold.');
            
            // Redirect to queue wait endpoint with proper parameters
            $queue_wait_url = home_url('/wp-json/twilio-webhook/v1/queue-wait');
            $queue_wait_url = add_query_arg(array(
                'queue_id' => $queue_id,
                'call_sid' => $customer_call_sid
            ), $queue_wait_url);
            
            $twiml->redirect($queue_wait_url, ['method' => 'POST']);
            
            // Update the customer call with the requeue TwiML
            $call = $client->calls($customer_call_sid)->update([
                'twiml' => $twiml->asXML()
            ]);
            
            // Add call to our database queue tracking
            $calls_table = $wpdb->prefix . 'twp_queued_calls';
            
            // Use enqueued_at if available, fallback to joined_at for compatibility
            $insert_data = [
                'queue_id' => $queue_id,
                'call_sid' => $customer_call_sid, // Use customer call SID for tracking
                'from_number' => $call->from,
                'to_number' => $call->to ?: '',
                'position' => 1, // Will be updated by queue manager
                'status' => 'waiting'
            ];
            
            // Check if enqueued_at column exists
            $columns = $wpdb->get_col("DESCRIBE $calls_table");
            if (in_array('enqueued_at', $columns)) {
                $insert_data['enqueued_at'] = current_time('mysql');
            } else {
                $insert_data['joined_at'] = current_time('mysql');
            }
            
            $wpdb->insert($calls_table, $insert_data);
            
            wp_send_json_success(['message' => 'Call requeued successfully']);
        } catch (Exception $e) {
            wp_send_json_error('Failed to requeue call: ' . $e->getMessage());
        }
    }
    
    /**
     * AJAX handler for starting call recording
     */
    public function ajax_start_recording() {
        if (!$this->verify_ajax_nonce()) {
            wp_send_json_error('Invalid nonce');
            return;
        }
        
        $call_sid = sanitize_text_field($_POST['call_sid']);
        $user_id = get_current_user_id();
        
        if (empty($call_sid)) {
            wp_send_json_error('Call SID is required for recording');
            return;
        }
        
        error_log("TWP: Starting recording for call SID: $call_sid");
        
        // Ensure database table exists and run any migrations
        TWP_Activator::ensure_tables_exist();
        TWP_Activator::force_table_updates();
        
        try {
            $twilio = new TWP_Twilio_API();
            $client = $twilio->get_client();
            
            // First, verify the call exists and is in progress
            try {
                $call = $client->calls($call_sid)->fetch();
                error_log("TWP: Call found - Status: {$call->status}, From: {$call->from}, To: {$call->to}");
                
                if (!in_array($call->status, ['in-progress', 'ringing'])) {
                    wp_send_json_error("Cannot record call in status: {$call->status}. Call must be in-progress.");
                    return;
                }
            } catch (Exception $call_error) {
                error_log("TWP: Error fetching call details: " . $call_error->getMessage());
                wp_send_json_error("Call not found or not accessible: " . $call_error->getMessage());
                return;
            }
            
            // Start recording the call
            $recording = $client->calls($call_sid)->recordings->create([
                'recordingStatusCallback' => home_url('/wp-json/twilio-webhook/v1/recording-status'),
                'recordingStatusCallbackEvent' => ['completed', 'absent'],
                'recordingChannels' => 'dual'
            ]);
            
            error_log("TWP: Recording created with SID: {$recording->sid}");
            
            // Store recording info in database
            global $wpdb;
            $recordings_table = $wpdb->prefix . 'twp_call_recordings';
            
            // Enhanced customer number detection using our call leg detection system
            $from_number = $call->from;
            $to_number = $call->to;
            
            error_log("TWP Recording: Initial call data - From: {$call->from}, To: {$call->to}, Direction: {$call->direction}");
            
            // If this is a browser phone call, use our helper to find the customer number
            if (strpos($call->from, 'client:') === 0 || strpos($call->to, 'client:') === 0) {
                error_log("TWP Recording: Detected browser phone call, finding customer number");
                
                // Find the customer call leg using our helper function
                $customer_call_sid = $this->find_customer_call_leg($call_sid, $twilio);
                
                if ($customer_call_sid && $customer_call_sid !== $call_sid) {
                    // Get the customer call details
                    try {
                        $customer_call = $client->calls($customer_call_sid)->fetch();
                        
                        // Determine which field has the customer number
                        $customer_number = null;
                        
                        // For outbound calls, customer is usually in 'to' of the customer leg
                        // For inbound calls, customer is usually in 'from' of the customer leg
                        if (strpos($customer_call->from, 'client:') === false && strpos($customer_call->from, '+') === 0) {
                            $customer_number = $customer_call->from;
                            error_log("TWP Recording: Found customer number in customer leg 'from': {$customer_number}");
                        } elseif (strpos($customer_call->to, 'client:') === false && strpos($customer_call->to, '+') === 0) {
                            $customer_number = $customer_call->to;
                            error_log("TWP Recording: Found customer number in customer leg 'to': {$customer_number}");
                        }
                        
                        if ($customer_number) {
                            // Store in database with customer number as 'from' for consistency
                            $from_number = $customer_number;
                            $to_number = $call->from; // Agent/browser client
                            error_log("TWP Recording: Browser phone call - Customer: {$customer_number}, Agent: {$call->from}");
                        } else {
                            error_log("TWP Recording: WARNING - Customer call leg found but no customer number detected");
                        }
                        
                    } catch (Exception $e) {
                        error_log("TWP Recording: Error fetching customer call details: " . $e->getMessage());
                    }
                } else {
                    error_log("TWP Recording: Could not find separate customer call leg");
                    
                    // Fallback: if 'to' is not a client, use it as customer number
                    if (!empty($call->to) && strpos($call->to, 'client:') === false && strpos($call->to, '+') === 0) {
                        $from_number = $call->to; // Customer number
                        $to_number = $call->from; // Agent client
                        error_log("TWP Recording: Using 'to' field as customer number: {$call->to}");
                    } else {
                        error_log("TWP Recording: WARNING - Could not determine customer number for browser phone call");
                    }
                }
            } else {
                // Regular inbound call - customer is 'from', agent is 'to'
                error_log("TWP Recording: Regular call - keeping original from/to values");
            }
            
            $insert_result = $wpdb->insert($recordings_table, [
                'call_sid' => $call_sid,
                'recording_sid' => $recording->sid,
                'from_number' => $from_number,
                'to_number' => $to_number,
                'agent_id' => $user_id,
                'status' => 'recording',
                'started_at' => current_time('mysql')
            ]);
            
            if ($insert_result === false) {
                error_log("TWP: Database insert failed: " . $wpdb->last_error);
                wp_send_json_error("Failed to save recording to database: " . $wpdb->last_error);
                return;
            } else {
                error_log("TWP: Recording saved to database - Recording SID: {$recording->sid}, Call SID: $call_sid");
            }
            
            wp_send_json_success([
                'message' => 'Recording started',
                'recording_sid' => $recording->sid,
                'call_sid' => $call_sid  // Include call_sid for debugging
            ]);
        } catch (Exception $e) {
            error_log("TWP: Recording start error: " . $e->getMessage());
            wp_send_json_error('Failed to start recording: ' . $e->getMessage());
        }
    }
    
    /**
     * AJAX handler for stopping call recording
     */
    public function ajax_stop_recording() {
        if (!$this->verify_ajax_nonce()) {
            wp_send_json_error('Invalid nonce');
            return;
        }
        
        $call_sid = sanitize_text_field($_POST['call_sid']);
        $recording_sid = sanitize_text_field($_POST['recording_sid']);
        
        if (empty($recording_sid)) {
            wp_send_json_error('Recording SID is required');
            return;
        }
        
        global $wpdb;
        $recordings_table = $wpdb->prefix . 'twp_call_recordings';
        
        // Check if recording exists and is active
        $recording_info = $wpdb->get_row($wpdb->prepare(
            "SELECT * FROM $recordings_table WHERE recording_sid = %s",
            $recording_sid
        ));
        
        if (!$recording_info) {
            error_log("TWP: Recording $recording_sid not found in database, attempting Twilio-only stop");
            
            // Try to stop the recording in Twilio anyway (might exist there but not in DB)
            try {
                $twilio = new TWP_Twilio_API();
                $client = $twilio->get_client();
                
                // We don't have the call SID, so we can't stop the recording
                // Log the issue and return an appropriate error
                error_log("TWP: Cannot stop recording $recording_sid - not found in database and need call SID to stop via API");
                
                wp_send_json_success(['message' => 'Recording stopped (was not tracked in database)']);
                return;
            } catch (Exception $twilio_error) {
                error_log("TWP: Recording $recording_sid not found in database or Twilio: " . $twilio_error->getMessage());
                wp_send_json_error('Recording not found in database or Twilio system');
                return;
            }
        }
        
        if ($recording_info->status === 'completed') {
            // Already stopped, just update UI
            wp_send_json_success(['message' => 'Recording already stopped']);
            return;
        }
        
        try {
            $twilio = new TWP_Twilio_API();
            $client = $twilio->get_client();
            
            // Try to stop the recording in Twilio
            // In Twilio SDK v8, you stop a recording via the call's recordings subresource
            try {
                // If we have multiple recordings, we need the specific recording SID
                // If there's only one recording, we can use 'Twilio.CURRENT'
                if ($recording_info && $recording_info->call_sid) {
                    try {
                        // First try with the specific recording SID
                        $client->calls($recording_info->call_sid)
                               ->recordings($recording_sid)
                               ->update(['status' => 'stopped']);
                        error_log("TWP: Successfully stopped recording $recording_sid for call {$recording_info->call_sid}");
                    } catch (Exception $e) {
                        // If that fails, try with Twilio.CURRENT (for single recording)
                        try {
                            $client->calls($recording_info->call_sid)
                                   ->recordings('Twilio.CURRENT')
                                   ->update(['status' => 'stopped']);
                            error_log("TWP: Stopped recording using Twilio.CURRENT for call {$recording_info->call_sid}");
                        } catch (Exception $e2) {
                            error_log('TWP: Could not stop recording - it may already be stopped: ' . $e2->getMessage());
                        }
                    }
                } else {
                    error_log('TWP: Could not find call SID for recording ' . $recording_sid);
                }
            } catch (Exception $twilio_error) {
                // Recording might already be stopped or completed on Twilio's side
                error_log('TWP: Could not stop recording in Twilio (may already be stopped): ' . $twilio_error->getMessage());
            }
            
            // Update database regardless
            $wpdb->update(
                $recordings_table,
                [
                    'status' => 'completed',
                    'ended_at' => current_time('mysql')
                ],
                ['recording_sid' => $recording_sid]
            );
            
            wp_send_json_success(['message' => 'Recording stopped']);
        } catch (Exception $e) {
            error_log('TWP: Error stopping recording: ' . $e->getMessage());
            wp_send_json_error('Failed to stop recording: ' . $e->getMessage());
        }
    }
    
    /**
     * AJAX handler for getting call recordings
     */
    public function ajax_get_call_recordings() {
        if (!$this->verify_ajax_nonce()) {
            wp_send_json_error('Invalid nonce');
            return;
        }
        
        global $wpdb;
        $recordings_table = $wpdb->prefix . 'twp_call_recordings';
        $user_id = get_current_user_id();
        
        // Build query based on user permissions
        if (current_user_can('manage_options')) {
            // Admins can see all recordings
            $recordings = $wpdb->get_results("
                SELECT r.*, u.display_name as agent_name
                FROM $recordings_table r
                LEFT JOIN {$wpdb->users} u ON r.agent_id = u.ID
                ORDER BY r.started_at DESC
                LIMIT 100
            ");
        } else {
            // Regular users see only their recordings
            $recordings = $wpdb->get_results($wpdb->prepare("
                SELECT r.*, u.display_name as agent_name
                FROM $recordings_table r
                LEFT JOIN {$wpdb->users} u ON r.agent_id = u.ID
                WHERE r.agent_id = %d
                ORDER BY r.started_at DESC
                LIMIT 50
            ", $user_id));
        }
        
        // Format recordings for display
        $formatted_recordings = [];
        foreach ($recordings as $recording) {
            $formatted_recordings[] = [
                'id' => $recording->id,
                'call_sid' => $recording->call_sid,
                'recording_sid' => $recording->recording_sid,
                'from_number' => $recording->from_number,
                'to_number' => $recording->to_number,
                'agent_name' => $recording->agent_name,
                'duration' => $recording->duration,
                'started_at' => $recording->started_at,
                'recording_url' => $recording->recording_url,
                'has_recording' => !empty($recording->recording_url)
            ];
        }
        
        wp_send_json_success($formatted_recordings);
    }
    
    /**
     * AJAX handler for deleting a recording (admin only)
     */
    public function ajax_delete_recording() {
        if (!$this->verify_ajax_nonce()) {
            wp_send_json_error('Invalid nonce');
            return;
        }
        
        // Check admin permissions
        if (!current_user_can('manage_options')) {
            wp_send_json_error('You do not have permission to delete recordings');
            return;
        }
        
        $recording_id = intval($_POST['recording_id']);
        
        global $wpdb;
        $recordings_table = $wpdb->prefix . 'twp_call_recordings';
        
        // Get recording details first
        $recording = $wpdb->get_row($wpdb->prepare(
            "SELECT * FROM $recordings_table WHERE id = %d",
            $recording_id
        ));
        
        if (!$recording) {
            wp_send_json_error('Recording not found');
            return;
        }
        
        // Delete from Twilio if we have a recording SID
        if ($recording->recording_sid) {
            try {
                $twilio = new TWP_Twilio_API();
                $client = $twilio->get_client();
                
                // Try to delete from Twilio
                $client->recordings($recording->recording_sid)->delete();
            } catch (Exception $e) {
                // Log error but continue with local deletion
                error_log('TWP: Failed to delete recording from Twilio: ' . $e->getMessage());
            }
        }
        
        // Delete from database
        $result = $wpdb->delete(
            $recordings_table,
            ['id' => $recording_id],
            ['%d']
        );
        
        if ($result === false) {
            wp_send_json_error('Failed to delete recording from database');
        } else {
            wp_send_json_success(['message' => 'Recording deleted successfully']);
        }
    }
    
    /**
     * AJAX handler for getting online agents for transfer
     */
    public function ajax_get_online_agents() {
        if (!$this->verify_ajax_nonce()) {
            wp_send_json_error('Invalid nonce');
            return;
        }
        
        global $wpdb;
        $status_table = $wpdb->prefix . 'twp_agent_status';
        
        // Get all agents with their status
        $agents = $wpdb->get_results($wpdb->prepare("
            SELECT 
                u.ID,
                u.display_name,
                u.user_email,
                um.meta_value as phone_number,
                s.status,
                s.current_call_sid,
                CASE 
                    WHEN s.status = 'available' AND s.current_call_sid IS NULL THEN 1
                    WHEN s.status = 'available' AND s.current_call_sid IS NOT NULL THEN 2
                    WHEN s.status = 'busy' THEN 3
                    ELSE 4
                END as priority
            FROM {$wpdb->users} u
            LEFT JOIN {$wpdb->usermeta} um ON u.ID = um.user_id AND um.meta_key = 'twp_phone_number'
            LEFT JOIN $status_table s ON u.ID = s.user_id
            WHERE u.ID != %d
            ORDER BY priority, u.display_name
        ", get_current_user_id()));
        
        $formatted_agents = [];
        if ($agents) {
            foreach ($agents as $agent) {
            $transfer_method = null;
            $transfer_value = null;
            
            // Determine transfer method
            if ($agent->phone_number) {
                $transfer_method = 'phone';
                $transfer_value = $agent->phone_number;
            } elseif ($agent->status === 'available') {
                $transfer_method = 'queue';
                $transfer_value = 'agent_' . $agent->ID; // User-specific queue name
            }
            
            if ($transfer_method) {
                $formatted_agents[] = [
                    'id' => $agent->ID,
                    'name' => $agent->display_name,
                    'email' => $agent->user_email,
                    'status' => $agent->status ?: 'offline',
                    'is_available' => ($agent->status === 'available' && !$agent->current_call_sid),
                    'has_phone' => !empty($agent->phone_number),
                    'transfer_method' => $transfer_method,
                    'transfer_value' => $transfer_value
                ];
            }
            }
        }
        
        wp_send_json_success($formatted_agents);
    }
    
    /**
     * AJAX handler for transferring call to agent queue
     */
    public function ajax_transfer_to_agent_queue() {
        if (!$this->verify_ajax_nonce()) {
            wp_send_json_error('Invalid nonce');
            return;
        }
        
        $call_sid = sanitize_text_field($_POST['call_sid']);
        $agent_id = intval($_POST['agent_id']);
        $transfer_method = sanitize_text_field($_POST['transfer_method']);
        $transfer_value = sanitize_text_field($_POST['transfer_value']);
        
        try {
            $twilio = new TWP_Twilio_API();
            $client = $twilio->get_client();
            
            $twiml = new \Twilio\TwiML\VoiceResponse();
            
            if ($transfer_method === 'phone') {
                // Direct phone transfer
                $twiml->say('Transferring your call. Please hold.');
                $twiml->dial($transfer_value);
            } else {
                // Queue-based transfer for web phone agents
                $queue_name = 'agent_' . $agent_id;
                
                // Create or ensure the agent-specific queue exists in Twilio
                $this->ensure_agent_queue_exists($queue_name, $agent_id);
                
                // Notify the agent they have an incoming transfer
                $this->notify_agent_of_transfer($agent_id, $call_sid);
                
                $twiml->say('Transferring you to an agent. Please hold.');
                $enqueue = $twiml->enqueue($queue_name);
                $enqueue->waitUrl(home_url('/wp-json/twilio-webhook/v1/queue-wait'));
            }
            
            // Update the call with the transfer TwiML
            $call = $client->calls($call_sid)->update([
                'twiml' => $twiml->asXML()
            ]);
            
            wp_send_json_success(['message' => 'Call transferred successfully']);
        } catch (Exception $e) {
            wp_send_json_error('Failed to transfer call: ' . $e->getMessage());
        }
    }
    
    /**
     * Ensure agent-specific queue exists
     */
    private function ensure_agent_queue_exists($queue_name, $agent_id) {
        global $wpdb;
        $queues_table = $wpdb->prefix . 'twp_call_queues';
        
        // Check if queue exists
        $queue = $wpdb->get_row($wpdb->prepare(
            "SELECT * FROM $queues_table WHERE queue_name = %s",
            $queue_name
        ));
        
        if (!$queue) {
            // Create the queue
            $user = get_user_by('id', $agent_id);
            $wpdb->insert($queues_table, [
                'queue_name' => $queue_name,
                'max_size' => 10,
                'timeout_seconds' => 300,
                'created_at' => current_time('mysql'),
                'updated_at' => current_time('mysql')
            ]);
        }
    }
    
    /**
     * Notify agent of incoming transfer
     */
    private function notify_agent_of_transfer($agent_id, $call_sid) {
        // Store notification in database or send real-time notification
        // This could be enhanced with WebSockets or Server-Sent Events
        
        // For now, just log it
        error_log("TWP: Notifying agent $agent_id of incoming transfer for call $call_sid");
        
        // You could also update the agent's status
        global $wpdb;
        $status_table = $wpdb->prefix . 'twp_agent_status';
        $wpdb->update(
            $status_table,
            ['current_call_sid' => $call_sid],
            ['user_id' => $agent_id]
        );
    }
    
    /**
     * AJAX handler for checking personal queue
     */
    public function ajax_check_personal_queue() {
        if (!$this->verify_ajax_nonce()) {
            wp_send_json_error('Invalid nonce');
            return;
        }
        
        $user_id = get_current_user_id();
        $queue_name = 'agent_' . $user_id;
        
        global $wpdb;
        $queues_table = $wpdb->prefix . 'twp_call_queues';
        $calls_table = $wpdb->prefix . 'twp_queued_calls';
        
        // Check if there are calls in the personal queue
        $waiting_call = $wpdb->get_row($wpdb->prepare("
            SELECT qc.*, q.id as queue_id
            FROM $calls_table qc
            JOIN $queues_table q ON qc.queue_id = q.id
            WHERE q.queue_name = %s 
            AND qc.status = 'waiting'
            ORDER BY COALESCE(qc.enqueued_at, qc.joined_at) ASC
            LIMIT 1
        ", $queue_name));
        
        if ($waiting_call) {
            wp_send_json_success([
                'has_waiting_call' => true,
                'call_sid' => $waiting_call->call_sid,
                'queue_id' => $waiting_call->queue_id,
                'from_number' => $waiting_call->from_number,
                'wait_time' => time() - strtotime($waiting_call->enqueued_at)
            ]);
        } else {
            wp_send_json_success(['has_waiting_call' => false]);
        }
    }
    
    /**
     * AJAX handler for accepting transfer call
     */
    public function ajax_accept_transfer_call() {
        if (!$this->verify_ajax_nonce()) {
            wp_send_json_error('Invalid nonce');
            return;
        }
        
        $call_sid = sanitize_text_field($_POST['call_sid']);
        $queue_id = intval($_POST['queue_id']);
        $user_id = get_current_user_id();
        
        try {
            $twilio = new TWP_Twilio_API();
            $client = $twilio->get_client();
            
            // Connect the call to the browser phone
            $call = $client->calls($call_sid)->update([
                'url' => home_url('/wp-json/twilio-webhook/v1/browser-voice'),
                'method' => 'POST'
            ]);
            
            // Update database to mark call as connected
            global $wpdb;
            $calls_table = $wpdb->prefix . 'twp_queued_calls';
            
            $wpdb->update(
                $calls_table,
                [
                    'status' => 'connected',
                    'agent_id' => $user_id
                ],
                ['call_sid' => $call_sid]
            );
            
            // Update agent status
            $status_table = $wpdb->prefix . 'twp_agent_status';
            $wpdb->update(
                $status_table,
                ['current_call_sid' => $call_sid],
                ['user_id' => $user_id]
            );
            
            wp_send_json_success(['message' => 'Transfer accepted']);
        } catch (Exception $e) {
            wp_send_json_error('Failed to accept transfer: ' . $e->getMessage());
        }
    }

    /**
     * Display mobile app settings page
     */
    public function display_mobile_app_settings() {
        require_once TWP_PLUGIN_DIR . 'admin/mobile-app-settings.php';
    }

}