npm install gopay-sdk

import { Currency, createGoPayClient } from 'gopay-sdk';

const client = createGoPayClient({
    goid: 8123456789,
    clientId: process.env.GOPAY_CLIENT_ID!,
    clientSecret: process.env.GOPAY_CLIENT_SECRET!,
    gatewayUrl: 'https://gw.sandbox.gopay.com/api',
});

const payment = await client.createPayment({
    amount: 10000,
    currency: Currency.CZK,
    order_number: 'ORDER-123',
    payer: {
        contact: {
            email: 'john.doe@example.com',
        },
    },
    callback: {
        return_url: 'https://example.com/return',
        notification_url: 'https://example.com/notify',
    },
});

console.log(payment.id, payment.gw_url);