一次接入，面向全球的收银台。

const waffo = Waffo.fromEnv();

const res = await waffo.order().create({
  paymentRequestId: genRequestId(), // idempotency
  orderAmount: '12.90',
  orderCurrency: 'SGD',
  notifyUrl: 'https://yourstore.com/webhooks/waffo',
  successRedirectUrl: 'https://yourstore.com/paid',
});

// Waffo hosts the page — hand the shopper the link.
redirect(webUrlOf(res.getData().orderAction));

const waffo = await loadWaffo(PUBLISHABLE_KEY);

// orderId comes from your own /api/orders route,
// which runs the server snippet above.
const checkout = await waffo.checkout.mount('#pay', {
  orderId,
  appearance: { theme: 'light', layout: 'split' },
  onComplete: ({ status }) => {
    if (status === 'SUCCESS') router.push('/paid');
  },
});

export async function POST(req: Request) {
  const event = await waffo.webhooks.verify(
    await req.text(),
    req.headers.get('waffo-signature'),
  );

  if (event.eventType === 'PAYMENT_NOTIFICATION') {
    await fulfil(event.paymentRequestId, event.status);
  }

  return new Response(null, { status: 200 });
}