# WhatsApp Migration Summary

## Overview
Successfully migrated from Twilio SMS to Twilio WhatsApp messaging.

## Changes Made

### 1. Core Service Files
- **TwilioService.php**: Updated to send WhatsApp messages instead of SMS
  - Changed message type from `sms` to `whatsapp` in logs
  - Updated `formatPhoneNumber()` to `formatWhatsAppNumber()` with `whatsapp:` prefix
  - Added `getFromNumber()` method to handle WhatsApp number formatting

### 2. Models
- **SmsSetting.php**: Updated to support WhatsApp configuration
  - Added `twilio_whatsapp_number` to fillable fields
  - Added `use_whatsapp` cast
  - Updated `isEnabled()` to check for WhatsApp number
  - Updated `getFromNumber()` to return WhatsApp number with prefix

- **NotificationLog.php**: Added `whatsapp()` scope for filtering WhatsApp notifications

### 3. Controllers
- **SmsSettingController.php**: Updated for WhatsApp
  - Changed all references from SMS to WhatsApp
  - Updated validation to require `twilio_whatsapp_number` instead of `twilio_phone_number`
  - Updated statistics to track WhatsApp instead of SMS
  - Updated test connection to send WhatsApp test message

### 4. Views
- **sms.blade.php**: Completely updated for WhatsApp
  - Changed title to "WhatsApp Settings"
  - Updated breadcrumbs and icons (WhatsApp icon)
  - Changed input field from `twilio_phone_number` to `twilio_whatsapp_number`
  - Updated color scheme to WhatsApp green (#25D366)
  - Updated JavaScript function `testSms()` to `testWhatsApp()`
  - Updated all text references to WhatsApp

- **index.blade.php**: Updated settings card for WhatsApp
  - Changed label to "WhatsApp Settings"
  - Changed icon to `fab fa-whatsapp`
  - Updated color scheme to WhatsApp green

- **notification.blade.php**: Updated notification channel label to "WhatsApp Notifications (Twilio)"

### 5. Environment Configuration (.env.example)
- Added WhatsApp configuration:
  ```
  TWILIO_ACCOUNT_SID=your_twilio_account_sid_here
  TWILIO_AUTH_TOKEN=your_twilio_auth_token_here
  TWILIO_WHATSAPP_FROM=whatsapp:+14155238886
  ```

### 6. Database
- **Migration**: Created `2026_04_25_170001_add_whatsapp_fields_to_sms_settings.php`
  - Adds `twilio_whatsapp_number` column
  - Adds `use_whatsapp` boolean column (default: true)

## Setup Instructions

### 1. Get Twilio WhatsApp Sandbox Number
1. Login to your Twilio account: https://www.twilio.com/console
2. Navigate to: Messaging → Try it out → Send a WhatsApp message
3. You'll see your sandbox number (e.g., `whatsapp:+14155238886`)
4. Copy the number with the `whatsapp:` prefix

### 2. Configure Environment Variables
Add/update these in your `.env` file:
```env
TWILIO_ACCOUNT_SID=ACxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
TWILIO_AUTH_TOKEN=your_auth_token_here
TWILIO_WHATSAPP_FROM=whatsapp:+14155238886
```

### 3. Test Recipients Must Join Sandbox
For testing, recipients must send a message to your sandbox number with the join code shown in the Twilio console.

### 4. Update via Admin Panel
1. Go to Settings → WhatsApp Settings
2. Enter your Twilio Account SID and Auth Token
3. Enter your WhatsApp sandbox number (e.g., `whatsapp:+14155238886`)
4. Click "Save WhatsApp Settings"
5. Test with "Send Test WhatsApp" button

## Production Setup
For production, you'll need to:
1. Apply for a WhatsApp Business Profile through Twilio
2. Get your own WhatsApp sender number approved
3. Update the `TWILIO_WHATSAPP_FROM` with your production number

## Backward Compatibility
- The `sendSms()` method name is kept for backward compatibility
- The `sms()` scope on NotificationLog now queries WhatsApp messages
- Database table names remain unchanged (`sms_settings`, `sms_templates`)

## Files Modified
1. app/Services/TwilioService.php
2. app/Services/NotificationService.php
3. app/Models/SmsSetting.php
4. app/Models/NotificationLog.php
5. app/Http/Controllers/Admin/SmsSettingController.php
6. app/Helpers/NotificationHelper.php
7. resources/views/backend/layout/settings/sms.blade.php
8. resources/views/backend/layout/settings/index.blade.php
9. resources/views/backend/layout/settings/notification.blade.php
10. .env.example
11. database/migrations/2026_04_25_170001_add_whatsapp_fields_to_sms_settings.php

## Testing Checklist
- [ ] Configure Twilio credentials in .env
- [ ] Update settings via admin panel
- [ ] Test WhatsApp message to a phone that has joined sandbox
- [ ] Check notification logs for WhatsApp entries
- [ ] Test all notification templates
- [ ] Verify booking confirmations send via WhatsApp
- [ ] Verify OTP messages send via WhatsApp