Pembayaran GoPay

import { GopayProvider } from "merchantid";

const gopay = new GopayProvider({
  merchantId: "G000000001",
  staticQris: "000201010211...",
  session: sessionFromSecretStore,
  onTokenRefreshed: async (session) => {
    await saveSecret("gopay-session", session);
  },
});

const payments = gopay.payments();
payments.on("paid", (payment) => {
  console.log("lunas", payment.reference, payment.uniqueAmount);
});
payments.on("expired", (payment) => {
  console.log("kedaluwarsa", payment.reference);
});
payments.on("error", (error) => {
  console.error("polling gagal", error);
});
payments.start();

const payment = await gopay.createPayment({
  amount: 10_000,
  reference: "order-42",
});

console.log(payment.uniqueAmount); // 10001, pembeli harus membayar persis
await displayQrLocally(payment.qrString); // jangan tulis payload QRIS mentah ke log

const { paid, expired } = await gopay.payments().tick();