How to retrieve a customer from Stripe API

1const express = require('express');
2const stripe = require('stripe')(process.env.STRIPE_SECRET_KEY);
3
4const app = express();
5app.use(express.json());
6
7// Retrieve customer by ID
8app.get('/api/customers/:id', async (req, res) => {
9  try {
10    const customer = await stripe.customers.retrieve(req.params.id, {
11      expand: ['subscriptions', 'default_source'],
12    });
13
14    if (customer.deleted) {
15      return res.status(404).json({ error: 'Customer has been deleted' });
16    }
17
18    res.json({
19      id: customer.id,
20      email: customer.email,
21      name: customer.name,
22      metadata: customer.metadata,
23      subscriptions: customer.subscriptions?.data || [],
24    });
25  } catch (err) {
26    if (err.code === 'resource_missing') {
27      return res.status(404).json({ error: 'Customer not found' });
28    }
29    res.status(500).json({ error: err.message });
30  }
31});
32
33// Search customer by email
34app.get('/api/customers', async (req, res) => {
35  try {
36    const { email, limit = 10 } = req.query;
37
38    if (!email) {
39      return res.status(400).json({ error: 'Email query parameter is required' });
40    }
41
42    const customers = await stripe.customers.list({
43      email,
44      limit: parseInt(limit, 10),
45    });
46
47    res.json(customers.data);
48  } catch (err) {
49    res.status(500).json({ error: err.message });
50  }
51});
52
53const PORT = process.env.PORT || 3000;
54app.listen(PORT, () => console.log(`Server on port ${PORT}`));