How to handle chargebacks in Stripe

1const express = require('express');
2const stripe = require('stripe')(process.env.STRIPE_SECRET_KEY);
3
4const app = express();
5
6// Webhook handler
7app.post('/webhook',
8  express.raw({ type: 'application/json' }),
9  async (req, res) => {
10    const sig = req.headers['stripe-signature'];
11    let event;
12
13    try {
14      event = stripe.webhooks.constructEvent(
15        req.body,
16        sig,
17        process.env.STRIPE_WEBHOOK_SECRET
18      );
19    } catch (err) {
20      return res.status(400).send(`Webhook Error: ${err.message}`);
21    }
22
23    switch (event.type) {
24      case 'charge.dispute.created': {
25        const dispute = event.data.object;
26        console.log(`Dispute created: ${dispute.id}`);
27        console.log(`Amount: $${dispute.amount / 100}`);
28        console.log(`Reason: ${dispute.reason}`);
29        const deadline = new Date(dispute.evidence_details.due_by * 1000);
30        console.log(`Evidence due by: ${deadline.toISOString()}`);
31        // TODO: alert team, auto-gather evidence
32        break;
33      }
34      case 'charge.dispute.closed': {
35        const result = event.data.object;
36        console.log(`Dispute ${result.id} closed: ${result.status}`);
37        if (result.status === 'won') {
38          console.log('Funds and $15 fee returned.');
39        } else if (result.status === 'lost') {
40          console.log('Funds lost. Consider process improvements.');
41        }
42        break;
43      }
44    }
45
46    res.json({ received: true });
47  }
48);
49
50app.use(express.json());
51
52// Submit evidence for a dispute
53app.post('/api/disputes/:disputeId/evidence', async (req, res) => {
54  try {
55    const { disputeId } = req.params;
56    const { evidence, submit } = req.body;
57
58    const dispute = await stripe.disputes.update(disputeId, {
59      evidence,
60      submit: submit || false,
61    });
62
63    res.json({
64      id: dispute.id,
65      status: dispute.status,
66      evidenceSubmitted: submit,
67    });
68  } catch (err) {
69    res.status(500).json({ error: err.message });
70  }
71});
72
73const PORT = process.env.PORT || 3000;
74app.listen(PORT, () => console.log(`Server on port ${PORT}`));