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// Create payment with Razorpay
const response = await fetch('/api/payments.php?action=create', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    amount: 999,
    currency: 'INR',
    gateway: 'razorpay',
    customer_name: 'John Doe',
    customer_email: 'john@example.com',
    gst_rate: 18,
    description: 'Premium Plan'
  })
});

const { razorpay_order_id, razorpay_key } = await response.json();

// Open Razorpay Checkout
const options = {
  key: razorpay_key,
  order_id: razorpay_order_id,
  handler: (response) => verifyPayment(response)
};
new Razorpay(options).open();

// Create Stripe checkout session
const response = await fetch('/api/payments.php?action=create', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    amount: 49.99,
    currency: 'USD',
    gateway: 'stripe',
    customer_name: 'John Doe',
    customer_email: 'john@example.com',
    description: 'Pro Subscription'
  })
});

const data = await response.json();
// Redirect to Stripe checkout or use Stripe.js

// Webhook endpoints for payment updates
POST /api/webhook/razorpay.php
POST /api/webhook/stripe.php
POST /api/webhook/cashfree.php
POST /api/webhook/paytm.php

// Telegram notifications - configure in settings
{
  "telegram_bot_token": "your-bot-token",
  "telegram_chat_id": "your-chat-id"
}

// All webhook events are logged for debugging