How to create a Checkout Session with Stripe

1const express = require('express');
2const stripe = require('stripe')(process.env.STRIPE_SECRET_KEY);
3
4const app = express();
5app.use(express.static('public'));
6app.use(express.json());
7
8// Create a Checkout Session
9app.post('/create-checkout-session', async (req, res) => {
10  try {
11    const session = await stripe.checkout.sessions.create({
12      mode: 'payment',
13      line_items: [
14        {
15          price_data: {
16            currency: 'usd',
17            product_data: {
18              name: 'Premium Widget',
19              description: 'A high-quality widget',
20            },
21            unit_amount: 2000, // $20.00 in cents
22          },
23          quantity: 1,
24        },
25      ],
26      success_url: `${req.headers.origin}/success?session_id={CHECKOUT_SESSION_ID}`,
27      cancel_url: `${req.headers.origin}/cancel`,
28    });
29
30    res.json({ url: session.url });
31  } catch (err) {
32    console.error('Checkout session error:', err.message);
33    res.status(500).json({ error: err.message });
34  }
35});
36
37// Verify session after payment (optional but recommended)
38app.get('/session-status', async (req, res) => {
39  try {
40    const session = await stripe.checkout.sessions.retrieve(req.query.session_id);
41    res.json({
42      status: session.payment_status,
43      customer_email: session.customer_details?.email,
44    });
45  } catch (err) {
46    res.status(500).json({ error: err.message });
47  }
48});
49
50const PORT = process.env.PORT || 3000;
51app.listen(PORT, () => console.log(`Server running on port ${PORT}`));