This is unofficial SDK to use LINE Pay inside the node.js based application on top of express framework.

Go to LINE Pay Developers and create your sandbox. You can retrieve Channel Id and Channel Secret Key after successful login to LINE Pay Console. You also need to configure white lists of server ip addresses which access to LINE Pay API.

$ npm install --save line-pay

Here is extremely basic server configuration to start payment flow.

"use strict";

const app = require("express")();
const uuid = require("uuid/v4");
const line_pay = require("line-pay");

const pay = new line_pay({
    channelId: process.env.LINE_PAY_CHANNEL_ID,
    channelSecret: process.env.LINE_PAY_CHANNEL_SECRET,
    isSandbox: true
});

app.listen(process.env.PORT || 5000, () => {
    console.log(`server is listening to ${process.env.PORT || 5000}...`);
});

app.use("/pay", pay.middleware({
    productName: "demo product",
    amount: 1,
    currency: "JPY",
    orderId: uuid()
}), (req, res, next) => {
    // Now payment should have been completed.
    res.send("Payment has been completed.");
});

When you open browser and access to https://YOUR_HOSTNAME/pay, it starts payment flow by reserving payment and redirect you to authorization screen.

When you approve the payment, you redirect back to https://YOUR_HOSTNAME/pay/confirm and the server actually captures the payment.

You can control the flow by using individual methods like reserve() or confirm() in the SDK.

For more methods, refer to API reference. Demo & Sample code to use LINE Pay inside chatbot would be a good reference for Bot developers.

MIT