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LEDGER ALERTS - WhatsApp & SMS Configuration
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Add these lines to your .env file:

# SMS Configuration (Uses existing SMS gateways)
SMS_ENABLED=true
SMS_LEDGER_ALERTS_ENABLED=true

# WhatsApp Configuration (Optional)
WHATSAPP_ENABLED=false
WHATSAPP_API_URL=https://api.whatsapp.com/send
WHATSAPP_API_TOKEN=your_whatsapp_api_token_here
WHATSAPP_SENDER_ID=your_sender_id_or_phone_number

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QUICK SETUP STEPS:
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1. SMS (Already Working):
   - Your SMS gateways are already configured
   - SMS will work immediately for admins with phone numbers

2. WhatsApp (Optional):
   - Set WHATSAPP_ENABLED=true
   - Add your WhatsApp API credentials
   - Popular services: Twilio, MessageBird, WhatsApp Business API

3. Update Admin Phone Numbers:
   UPDATE users SET phone = '+905XXXXXXXXX' WHERE type = 'admin';

4. Test It:
   php artisan ledger:monitor

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IMPORTANT NOTES:
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✅ SMS uses your existing infrastructure (no additional setup needed)
✅ WhatsApp/SMS only sent for CRITICAL alerts (saves money)
✅ Email always sent as backup
✅ Phone format: +[country code][number] (e.g., +905XXXXXXXXX)
✅ Errors logged to storage/logs/laravel.log

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