# 📱 Bank Transaction SMS Notification Fix

This solution fixes the issue where automatic SMS notifications are not being sent when bank transactions are verified at `http://localhost/bidda/fees/verify_bank_transactions.php`.

## 🔧 Files Created

1. **`fix_sms_notifications.php`** - Main fix script that configures all required settings
2. **`diagnose_sms_issues.php`** - Diagnostic tool to check current configuration
3. **`test_sms_functionality.php`** - Test script to verify SMS sending works
4. **`check_sms_settings.php`** - Simple settings checker

## 🚀 Quick Start

### Step 1: Run the Fix Script
Access this URL in your browser:
```
http://localhost/bidda/fix_sms_notifications.php
```

This will:
- ✅ Create/configure all required database settings
- ✅ Set up SMS templates
- ✅ Enable SMS services
- ✅ Verify configuration

### Step 2: Test the System
Access this URL to test SMS functionality:
```
http://localhost/bidda/test_sms_functionality.php
```

This will:
- ✅ Test sending actual SMS messages
- ✅ Check configuration
- ✅ Verify student phone numbers
- ✅ Display message logs

### Step 3: Diagnose Issues (if needed)
If problems persist, use the diagnostic tool:
```
http://localhost/bidda/diagnose_sms_issues.php
```

This will show detailed information about:
- ❌ Missing settings
- ❌ Configuration issues
- ❌ Student data problems
- ❌ API connection status

## 📋 What Gets Fixed

### Database Settings Added/Updated:
- `non_musking_enabled` = 1 (enables SMS service)
- `sms_send_bank_transaction_notifications` = 1 (enables bank notifications)
- `non_musking_api_key` = YOUR_MRAM_API_KEY_HERE (you need to update this)
- `non_musking_api_url` = https://esms.mram.com.bd/smsapi
- `non_musking_sender_id` = SCHOOL
- `sms_tpl_bank_transaction` = Template for successful transactions
- `sms_tpl_bank_transaction_rejection` = Template for rejected transactions

### Code Improvements:
- Enhanced error logging for debugging
- Better template handling with fallbacks
- Improved phone number normalization
- More robust SMS sending logic

## ⚙️ Manual Configuration Required

After running the fix script, you MUST update these settings in your admin panel:

1. **MRAM API Key**: Replace `YOUR_MRAM_API_KEY_HERE` with your actual MRAM API key
2. **Sender ID**: Update if you want a custom sender name
3. **API URL**: Update if MRAM changes their endpoint

Admin Panel Location: `Admin → SMS Settings`

## 🧪 Testing Process

1. **Verify Settings**: Run `fix_sms_notifications.php`
2. **Test SMS**: Run `test_sms_functionality.php` 
3. **Real Transaction**: Go to `verify_bank_transactions.php` and verify a real transaction
4. **Check Logs**: Look at message logs in database or error logs

## 📊 Expected Results

When everything works correctly:
- ✅ Verified transactions send SMS: "Dear [Name], your bank transaction of ৳[Amount] has been successfully verified..."
- ✅ Rejected transactions send SMS: "Dear [Name], your bank transaction of ৳[Amount] has been rejected..."
- ✅ Messages are logged in `messages_log` table
- ✅ Error logs show successful API calls

## 🔍 Troubleshooting

### If SMS Still Doesn't Send:

1. **Check Student Data**:
   - Ensure students have valid phone numbers
   - Phone numbers should be in format: 01XXXXXXXXX or +8801XXXXXXXXX

2. **Check MRAM Credentials**:
   - Verify API key is correct
   - Check if MRAM account has sufficient balance
   - Confirm IP address is whitelisted

3. **Check Server Logs**:
   - Look for error messages in PHP error log
   - Check Apache/Nginx error logs
   - Look for curl errors or timeouts

4. **Test Network Connectivity**:
   - Ensure server can reach MRAM API endpoint
   - Check firewall settings
   - Verify DNS resolution

### Common Error Messages:

- **"Missing API configuration"**: MRAM API key or URL not set
- **"IP Address not whitelisted"**: Contact MRAM to whitelist your server IP
- **"Failed to send SMS"**: Network issue or MRAM service down
- **"No student or empty phone number"**: Student profile missing phone number

## 🛠️ Technical Details

### How It Works:
1. When admin verifies a bank transaction, the system checks if SMS is enabled
2. If enabled, it retrieves student phone number and constructs message
3. Uses `SmsNotificationSystem` class to send SMS via MRAM API
4. Logs all attempts in `messages_log` table
5. Shows success/failure status to admin user

### Key Components:
- `verify_bank_transactions.php` - Main verification page
- `includes/sms_notification_system.php` - SMS sending logic
- `includes/sms_helper.php` - Low-level SMS functions
- `settings` table - Stores configuration
- `messages_log` table - Stores SMS history

## 📞 Support

If you continue having issues:
1. Run the diagnostic script and save the output
2. Check server error logs
3. Verify MRAM account status and credentials
4. Contact system administrator with detailed error information

---
**Note**: This fix ensures that when you verify bank transactions at `http://localhost/bidda/fees/verify_bank_transactions.php`, automatic SMS notifications will be sent to students/parents.