// In your fee payment endpoint
app.post('/api/fees/pay', async (req, res) => {
  const { studentId, parentPhone, feeAmount, month, year } = req.body;

  // Process fee payment
  const feeRecord = await Fee.create({
    studentId,
    amount: feeAmount,
    month,
    year,
    paidAt: new Date(),
  });

  // Trigger WhatsApp message to parent
  const message = `Fee Receipt

Student: [${studentId}]
Amount: ₹${feeAmount}
Month: ${month} ${year}
Paid: ${new Date().toLocaleDateString()}

Thank you!`;

  const response = await fetch('https://yourdomain.com/api/send-message', {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify({
      phone: parentPhone,
      message,
      channel: 'whatsapp',
      messageType: 'text',
      idempotencyKey: `fee-${feeRecord._id}`,
    }),
  });

  if (response.ok) {
    res.json({ success: true, message: 'Fee recorded and parent notified' });
  } else {
    res.status(500).json({ error: 'Failed to notify parent' });
  }
});

# views.py
import requests
from django.http import JsonResponse
from .models import Fee

def pay_fee(request):
    if request.method == 'POST':
        data = request.POST
        student_id = data.get('student_id')
        parent_phone = data.get('parent_phone')
        fee_amount = data.get('fee_amount')
        month = data.get('month')
        year = data.get('year')

        # Save fee record
        fee = Fee.objects.create(
            student_id=student_id,
            amount=fee_amount,
            month=month,
            year=year,
        )

        # Send WhatsApp message
        message = f"""Fee Receipt

Student: {student_id}
Amount: ₹{fee_amount}
Month: {month} {year}
Paid: {fee.created_at.strftime('%d-%m-%Y')}

Thank you!"""

        payload = {
            'phone': parent_phone,
            'message': message,
            'channel': 'whatsapp',
            'messageType': 'text',
            'idempotencyKey': f'fee-{fee.id}',
        }

        response = requests.post(
            'https://yourdomain.com/api/send-message',
            json=payload
        )

        return JsonResponse({'success': True})

curl -X POST https://yourdomain.com/api/send-message \
  -H "Content-Type: application/json" \
  -d '{
    "phone": "+919876543210",
    "message": "Fee Receipt\n\nStudent: ABC123\nAmount: ₹5000\nMonth: November 2024\nPaid: 20-11-2024\n\nThank you!",
    "channel": "whatsapp",
    "messageType": "text",
    "idempotencyKey": "fee-student-abc123-nov2024"
  }'