Integra InvoCash con Shopify

// Registrar webhook via Shopify Admin API
await fetch(`https://${SHOP}/admin/api/2024-01/webhooks.json`, {
  method:  'POST',
  headers: {
    'Content-Type':           'application/json',
    'X-Shopify-Access-Token': ACCESS_TOKEN,
  },
  body: JSON.stringify({
    webhook: {
      topic:   'orders/paid',
      address: 'https://tu-backend.com/webhooks/shopify/orders-paid',
      format:  'json',
    }
  }),
});

// Express endpoint para recibir el webhook de Shopify
app.post('/webhooks/shopify/orders-paid', async (req, res) => {
  const order    = req.body;
  const taxBase  = parseFloat(order.subtotal_price);
  const taxAmt   = parseFloat(order.total_tax);
  const taxPctge = taxBase > 0 ? Math.round(taxAmt / taxBase * 100) : 21;

  await fetch('https://{su-tenant}.invo.cash/api/invoices', {
    method:  'POST',
    headers: { 'Content-Type': 'application/json', 'X-API-Key': API_KEY },
    body: JSON.stringify({
      verifactu_issuer_territory: 'MAINLAND',
      simplified:                 false,
      lines: order.line_items.map(item => ({
        description:             item.name,
        quantity:                item.quantity,
        unit_price:              parseFloat(item.price),
        tax_base:                parseFloat(item.price) * item.quantity,
        tax_pctge:               taxPctge,
        tax_amount:              parseFloat(item.price) * item.quantity * taxPctge / 100,
        tax_withholding_pctge:   0,
        tax_withholding_amount:  0,
        tax_type:                'IVA',
        clave_regimen:           '01',
        qualification_operation: 'S1',
        exempt_operation:        null,
        total:                   parseFloat(item.price) * item.quantity,
      })),
      total: parseFloat(order.total_price),
    }),
  });
  res.status(200).send('OK');
});