# Twilio WordPress Plugin

A comprehensive WordPress plugin for Twilio voice and SMS integration with advanced call center functionality.

## ⚠️ IMPORTANT: SDK Required

This plugin **requires** the Twilio PHP SDK v8.7.0 to function. The plugin will not work without it.

## Quick Installation

1. **Install the Twilio SDK** (Required):
   ```bash
   chmod +x install-twilio-sdk.sh
   ./install-twilio-sdk.sh
   ```

2. **Test the SDK installation**:
   ```bash
   php test-sdk.php
   ```

3. **Configure Twilio Credentials** in WordPress admin:
   - Account SID
   - Auth Token  
   - Phone Number

4. **Test the installation** with a sample call.

## Requirements

- **PHP 8.0+** (required for Twilio SDK v8.7.0)
- **WordPress 5.0+**
- **Twilio Account** with active phone number
- **curl** and **tar** (for SDK installation)

## Key Features

- 📞 **Call Center Operations**: Agent groups, queues, call distribution
- 🕒 **Business Hours Management**: Automated routing based on schedules  
- 📱 **Outbound Calling**: Click-to-call with proper caller ID
- 💬 **SMS Integration**: Agent notifications and command system
- 🎛️ **Workflow Builder**: Visual call flow creation
- 🎤 **Voicemail System**: Recording, transcription, and notifications
- 📊 **Real-time Dashboard**: Queue management and statistics

## Installation Methods

### Option 1: Installation Script (Recommended)
```bash
# Run in plugin directory
./install-twilio-sdk.sh
```

### Option 2: Composer (For Development)
```bash
composer install
```

### Option 3: Manual Installation
1. Download Twilio SDK v8.7.0 from GitHub
2. Extract to `vendor/twilio/sdk/`  
3. Create autoloader (see install script for reference)

## Architecture

The plugin uses:
- **Official Twilio PHP SDK v8.7.0** for all API operations
- **Native TwiML classes** for response generation
- **WordPress hooks and filters** for integration
- **Custom database tables** for call management
- **REST API endpoints** for webhooks

## Configuration

1. Install the SDK using the provided script
2. Configure Twilio credentials in WordPress admin
3. Set up phone numbers and webhook URLs
4. Create agent groups and workflows
5. Test with sample calls

## Troubleshooting

### "Twilio SDK classes not available" Error

1. **Run the installation script**:
   ```bash
   chmod +x install-twilio-sdk.sh
   ./install-twilio-sdk.sh
   ```

2. **Test SDK installation**:
   ```bash
   php test-sdk.php
   ```

3. **Check file permissions**:
   ```bash
   ls -la vendor/
   ls -la vendor/twilio/sdk/
   ```

4. **Verify directory structure**:
   ```
   vendor/
   ├── autoload.php
   └── twilio/
       └── sdk/
           ├── Rest/Client.php
           ├── TwiML/VoiceResponse.php
           └── ... (other SDK files)
   ```

### Plugin Shows 500 Error

- Check WordPress error logs
- Enable WP_DEBUG in wp-config.php
- Look for TWP Plugin error messages in logs

### SDK Installation Fails

- Ensure `curl` and `tar` are installed
- Check internet connection
- Try manual installation (see Installation Methods)

## Support

- Check `CLAUDE.md` for detailed technical documentation
- Review `TWILIO_SDK_MIGRATION.md` for migration details  
- Enable WordPress debug logging for troubleshooting
- Use Twilio Console debugger for webhook testing

## License

This plugin integrates with Twilio services and requires a Twilio account.