Payment Webhook Setup

Learn how to handle payment webhooks from popular payment processors like Stripe, PayPal, and others.

Stripe Payment Webhooks

Setup

1. Go to Stripe Dashboard → Developers → Webhooks
2. Add your webhook endpoint URL
3. Select events: payment_intent.succeeded, payment_intent.payment_failed

Handler Implementation

const stripe = require('stripe')(process.env.STRIPE_SECRET_KEY);

app.post('/webhooks/stripe', express.raw({type: 'application/json'}), (req, res) => {
  const sig = req.headers['stripe-signature'];
  let event;

  try {
    event = stripe.webhooks.constructEvent(req.body, sig, process.env.STRIPE_ENDPOINT_SECRET);
  } catch (err) {
    console.log(`Webhook signature verification failed.`, err.message);
    return res.status(400).send(`Webhook Error: ${err.message}`);
  }

  switch (event.type) {
    case 'payment_intent.succeeded':
      await handlePaymentSuccess(event.data.object);
      break;
    case 'payment_intent.payment_failed':
      await handlePaymentFailure(event.data.object);
      break;
  }

  res.json({received: true});
});

PayPal Webhooks

PayPal IPN Handler

app.post('/webhooks/paypal', async (req, res) => {
  const verification = await verifyPayPalIPN(req.body);
  
  if (!verification) {
    return res.status(400).send('Invalid IPN');
  }
  
  const paymentStatus = req.body.payment_status;
  
  switch (paymentStatus) {
    case 'Completed':
      await handlePayPalPaymentSuccess(req.body);
      break;
    case 'Failed':
    case 'Denied':
      await handlePayPalPaymentFailure(req.body);
      break;
  }
  
  res.status(200).send('OK');
});

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This section is under development. More payment webhook examples coming soon.