#!/bin/bash

# Script to install Twilio PHP SDK without Composer
# This is REQUIRED for the plugin to work properly

echo "Installing Twilio PHP SDK v8.7.0..."
echo "IMPORTANT: This SDK is required for the plugin to function."

# Check if we can download files
if ! command -v curl &> /dev/null; then
    echo "ERROR: curl is required to download the SDK"
    echo "Please install curl and try again"
    exit 1
fi

if ! command -v tar &> /dev/null; then
    echo "ERROR: tar is required to extract the SDK"
    echo "Please install tar and try again"
    exit 1
fi

# Create vendor directory if it doesn't exist
mkdir -p vendor/twilio/sdk

# Download the latest release (8.7.0)
echo "Downloading Twilio SDK from GitHub..."
if ! curl -L https://github.com/twilio/twilio-php/archive/refs/tags/8.7.0.tar.gz -o twilio-sdk.tar.gz; then
    echo "ERROR: Failed to download Twilio SDK"
    echo "Please check your internet connection and try again"
    exit 1
fi

# Extract the archive
echo "Extracting SDK files..."
if ! tar -xzf twilio-sdk.tar.gz; then
    echo "ERROR: Failed to extract SDK files"
    exit 1
fi

# Check if the extracted directory exists
if [ ! -d "twilio-php-8.7.0/src" ]; then
    echo "ERROR: Extracted SDK directory structure is unexpected"
    exit 1
fi

# Create the Twilio directory structure
echo "Setting up SDK directory structure..."
mkdir -p vendor/twilio

# Remove existing SDK if it exists
if [ -d "vendor/twilio/sdk" ]; then
    rm -rf vendor/twilio/sdk
fi

# Move the entire src directory to be the sdk
echo "Installing SDK files..."
if ! mv twilio-php-8.7.0/src vendor/twilio/sdk; then
    echo "ERROR: Failed to move SDK files"
    exit 1
fi

# Create a comprehensive autoloader
cat > vendor/autoload.php << 'EOF'
<?php
/**
 * Twilio SDK v8.7.0 Autoloader
 * This file loads the Twilio PHP SDK classes
 */

// Prevent multiple registrations
if (!defined('TWILIO_AUTOLOADER_REGISTERED')) {
    define('TWILIO_AUTOLOADER_REGISTERED', true);
    
    // Register the autoloader
    spl_autoload_register(function ($class) {
        // Only handle Twilio classes
        if (strpos($class, 'Twilio\\') !== 0) {
            return false;
        }
        
        // Convert class name to file path
        $relative_class = substr($class, 7); // Remove 'Twilio\'
        $file = __DIR__ . '/twilio/sdk/' . str_replace('\\', '/', $relative_class) . '.php';
        
        if (file_exists($file)) {
            require_once $file;
            return true;
        }
        
        return false;
    });
    
    // Try to load the SDK's own autoloader if it exists
    $sdk_autoloader = __DIR__ . '/twilio/sdk/autoload.php';
    if (file_exists($sdk_autoloader)) {
        require_once $sdk_autoloader;
    }
    
    // Load essential Twilio classes manually to ensure they're available
    $essential_classes = [
        __DIR__ . '/twilio/sdk/Rest/Client.php',
        __DIR__ . '/twilio/sdk/TwiML/VoiceResponse.php',
        __DIR__ . '/twilio/sdk/Exceptions/TwilioException.php',
        __DIR__ . '/twilio/sdk/Security/RequestValidator.php'
    ];
    
    foreach ($essential_classes as $class_file) {
        if (file_exists($class_file)) {
            require_once $class_file;
        }
    }
}
EOF

# Clean up
rm -rf twilio-php-8.7.0
rm twilio-sdk.tar.gz

# Verify installation
echo ""
echo "Verifying installation..."
if [ -f "vendor/autoload.php" ] && [ -d "vendor/twilio/sdk" ]; then
    echo "✓ Twilio SDK v8.7.0 installed successfully!"
    echo "✓ Autoloader created"
    echo "✓ Installation complete"
    echo ""
    echo "The Twilio WordPress Plugin is now ready to use."
    echo ""
    echo "Next steps:"
    echo "1. Configure your Twilio credentials in WordPress admin"
    echo "2. Set up your phone numbers and webhooks"
    echo "3. Test the installation with a sample call"
else
    echo "✗ Installation failed - files not found"
    exit 1
fi