How to redirect after successful Stripe Checkout payment

1const session = await stripe.checkout.sessions.create({
2  mode: 'payment',
3  line_items: [{ price: 'price_xxx', quantity: 1 }],
4  success_url: 'https://yoursite.com/success?session_id={CHECKOUT_SESSION_ID}',
5  cancel_url: 'https://yoursite.com/cancel',
6});

1app.get('/api/verify-session', async (req, res) => {
2  const { session_id } = req.query;
3
4  if (!session_id) {
5    return res.status(400).json({ error: 'Missing session_id' });
6  }
7
8  try {
9    const session = await stripe.checkout.sessions.retrieve(session_id);
10
11    res.json({
12      payment_status: session.payment_status, // 'paid', 'unpaid', 'no_payment_required'
13      customer_email: session.customer_details?.email,
14      amount_total: session.amount_total,
15      currency: session.currency,
16    });
17  } catch (err) {
18    res.status(500).json({ error: 'Invalid session' });
19  }
20});

1// On /success page
2const urlParams = new URLSearchParams(window.location.search);
3const sessionId = urlParams.get('session_id');
4
5if (!sessionId) {
6  window.location.href = '/'; // No session ID, redirect home
7} else {
8  const res = await fetch(`/api/verify-session?session_id=${sessionId}`);
9  const data = await res.json();
10
11  if (data.payment_status === 'paid') {
12    document.getElementById('status').textContent =
13      `Thank you! Payment of $${(data.amount_total / 100).toFixed(2)} confirmed.`;
14  } else {
15    document.getElementById('status').textContent =
16      'Payment not confirmed. Please contact support.';
17  }
18}

1// Webhook endpoint (see webhook tutorial for full setup)
2app.post('/webhook', express.raw({ type: 'application/json' }), (req, res) => {
3  const sig = req.headers['stripe-signature'];
4  let event;
5
6  try {
7    event = stripe.webhooks.constructEvent(
8      req.body,
9      sig,
10      process.env.STRIPE_WEBHOOK_SECRET
11    );
12  } catch (err) {
13    return res.status(400).send(`Webhook Error: ${err.message}`);
14  }
15
16  if (event.type === 'checkout.session.completed') {
17    const session = event.data.object;
18    // Fulfill the order here (e.g., grant access, send email)
19    console.log('Payment confirmed via webhook:', session.id);
20  }
21
22  res.json({ received: true });
23});