How to create a Payment Intent in 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 PaymentIntent
9app.post('/create-payment-intent', async (req, res) => {
10  try {
11    const { amount, currency = 'usd' } = req.body;
12
13    if (!amount || amount < 50) {
14      return res.status(400).json({ error: 'Amount must be at least 50 cents' });
15    }
16
17    const paymentIntent = await stripe.paymentIntents.create({
18      amount: Math.round(amount), // Ensure integer cents
19      currency,
20      automatic_payment_methods: { enabled: true },
21      metadata: {
22        integration: 'custom_payment_form',
23      },
24    });
25
26    res.json({ clientSecret: paymentIntent.client_secret });
27  } catch (err) {
28    console.error('PaymentIntent error:', err.message);
29    res.status(500).json({ error: err.message });
30  }
31});
32
33// Check PaymentIntent status
34app.get('/payment-status/:id', async (req, res) => {
35  try {
36    const paymentIntent = await stripe.paymentIntents.retrieve(req.params.id);
37    res.json({
38      status: paymentIntent.status,
39      amount: paymentIntent.amount,
40      currency: paymentIntent.currency,
41    });
42  } catch (err) {
43    res.status(500).json({ error: err.message });
44  }
45});
46
47const PORT = process.env.PORT || 3000;
48app.listen(PORT, () => console.log(`Server on port ${PORT}`));