Enviar eventos do Muda para sua API

import express from 'express';
import { verifyMudaWebhook } from './verify-muda-webhook.js';

const app = express();
app.post(
  '/webhooks/muda',
  express.raw({ type: 'application/json', limit: '256kb' }),
  async (req, res) => {
  const rawBody = req.body.toString('utf8');
  const signature = req.header('x-muda-webhook-signature');
  const idempotencyKey = req.header('idempotency-key');

  if (!verifyMudaWebhook(rawBody, signature, process.env.MUDA_WEBHOOK_SECRET)) {
    return res.status(401).json({ error: 'invalid_signature' });
  }
  if (!idempotencyKey) {
    return res.status(400).json({ error: 'missing_idempotency_key' });
  }

  try {
    const event = JSON.parse(rawBody);
    // Use uma restricao unica por Idempotency-Key. A funcao deve retornar
    // "duplicate" (sem erro) quando a chave ja tiver sido persistida.
    const result = await persistWebhookEvent({ idempotencyKey, event });
    if (result === 'duplicate') {
      return res.status(200).json({ received: true, duplicate: true });
    }
    return res.status(202).json({ received: true });
  } catch (error) {
    return res.status(503).json({ error: 'durable_persistence_failed' });
  }
});