BufPay Node.js SDK 🚀

Easily integrate with BufPay's payment gateway using this simple-to-use Node.js SDK. 💳💻

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🌟 Features

• Payment Creation: Generate payment links with various parameters.
• Payment Query: Check the status of payments.
• Notification Verification: Securely validate webhook notifications from BufPay.
• Express Middleware: Seamlessly handle notifications in your Node.js apps.

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📦 Installation

npm install bufpay-sdk

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🚀 Getting Started

1️⃣ Import and Initialize

const { BufPay, createBufPayMiddleware } = require('bufpay.js');

const bufpay = new BufPay('your_app_id', 'your_app_secret');

2️⃣ Create Payments

async function createPaymentExample() {
    try {
        const payment = await bufpay.createPayment({
            name: 'Test Product',
            payType: 'alipay', // or 'wechat'
            price: '100.00',
            orderId: 'order123',
            orderUid: 'user123',
            notifyUrl: 'https://your-domain.com/bufpay/notify',
            returnUrl: 'https://your-domain.com/success'
        });

        console.log('Payment created:', payment);
    } catch (error) {
        console.error('Payment creation failed:', error);
    }
}

3️⃣ Verify Notifications

const express = require('express');
const app = express();

app.use(createBufPayMiddleware(bufpay, (paymentData) => {
    console.log('Payment received:', paymentData);
}));

app.listen(3000, () => {
    console.log('Server is running on port 3000');
});

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🔑 Methods

BufPay Class

1. createPayment(params)

Creates a new payment.

• Parameters:
  • name (string): Product or service name.
  • payType (string): Payment type ('alipay' or 'wechat').
  • price (string): Payment amount.
  • orderId (string): Unique order ID.
  • orderUid (string): User ID or email.
  • notifyUrl (string): Webhook URL.
  • returnUrl (string, optional): URL to redirect after payment.
  • feedbackUrl (string, optional): URL for payment feedback.
• Returns: Promise with payment details.

2. queryPayment(aoid)

Queries payment status.

• Parameters:
  • aoid (string): BufPay order ID.
• Returns: Promise with payment status.

3. verifyNotification(params)

Verifies webhook notification signature.

• Parameters:
  • params (object): Notification parameters including aoid, order_id, order_uid, price, pay_price, and sign.
• Returns: Boolean indicating validity.

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⚙️ Middleware

createBufPayMiddleware(bufpay, onPaymentSuccess)

Creates an Express router for handling BufPay notifications.

• Parameters:
  • bufpay (BufPay): Instance of the BufPay class.
  • onPaymentSuccess (Function, optional): Callback for successful payments.

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🛡️ Security

Ensure your appId and appSecret are kept confidential. 🔒