مهاجرت بین درگاه‌ها

import { UnoPay, ZarinpalAdapter, type GatewayAdapter } from 'unopay';

const unopay = new UnoPay({
  zarinpal: new ZarinpalAdapter({ merchantId: process.env.ZARINPAL_MERCHANT_ID! }),
  idpay: myIdpayAdapter, // a GatewayAdapter you wrote yourself
});

// 'zarinpal' | 'idpay' — anything else fails to compile.
type Provider = 'zarinpal' | 'idpay';

app.post('/checkout/:provider', async (req, res) => {
  const provider = req.params.provider as Provider;
  const { amount, currency } = req.body;

  const payment = await unopay.createPayment(provider, {
    amount: Number(amount),
    currency,
    callbackUrl: 'https://yoursite.com/api/payment/callback',
    metadata: { description: 'Order ' + req.body.orderId },
  });

  await saveAuthority(req.body.orderId, provider, payment.transactionId);
  res.redirect(payment.redirectUrl);
});