Momo Wallet API-SDK

The module will make it easier for you to integrate with Momo Wallet payments by QR code

Process flow

Installation

Requires successful registration of Momo partner first Use the package manager npm to install.

npm i momo-payment-sdk

Usage

const MomoPayment = require('momo-payment-sdk');

/* HOST_WEBHOOK => MoMo system will call to your URL for alert the result */
const HOST_WEBHOOK = process.env.HOST_WEBHOOK;

/*
 constructor: partnerCode, accessKey, secretKey => provided from Momo
 constructor: environment = "live" || "sandbox"
*/
class MomoPaymentService {
  constructor(partnerCode, accessKey, secretKey, environment) {
    this.momoPayment = new MomoPayment({
      partnerCode,
      accessKey,
      secretKey,
      environment,
    });
  }
  
/* Return the URL payment by QR code */
  async createPayment({
    orderId,
    amount,
    orderInfo = 'Your message',
    returnUrl = 'https://your-website.com',
  }) {
    try {
      if (!orderId || !amount || !message || !orderInfo) {
        throw new Error('invalid input');
      }
      const result = await this.momoPayment.createPayment({
        requestId: `ID-${orderId}`,
        orderId,
        amount: amount.toString(),
        orderInfo,
        returnUrl,
        notifyUrl: HOST_WEBHOOK,
      });
      return result.data;
    } catch (error) {
      console.error(error)
      throw error;
    }
  }
  
/* Rollback the transaction */
  async refundPayment({ requestId, orderId, amount, transId }) {
    try {
      if (!orderId || !amount || !transId) {
        throw new Error('invalid input');
      }
      const result = await this.momoPayment.refundPayment({
        requestId,
        orderId,
        amount,
        transId,
      });
      return result.data;
    } catch (error) {
      console.error(error)
      throw error;
    }
  }

/* The function for verify webhook request */
  verifySignature({
    signature,
    requestId,
    orderId,
    amount,
    orderInfo,
    orderType,
    transId,
    message,
    localMessage,
    responseTime,
    errorCode,
    payType,
  }) {
    try {
      const result = this.momoPayment.verifySignature({
        signature,
        requestId,
        orderId,
        amount,
        orderInfo,
        orderType,
        transId,
        message,
        localMessage,
        responseTime,
        errorCode,
        payType,
      });
      return result;
    } catch (error) {
      console.error(error)
      throw error;
    }
  }
}
module.exports = MomoPaymentService;