GenerateHash.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const functions = require("firebase-functions");
const admin = require("firebase-admin");
admin.initializeApp();

exports.getHash = functions.https.onRequest(async (request, response) => {
    const merchantKey = "oVWDEmPK";
    const salt = "cdrcf1cyTj";
    const txnId = request.query.txnId;
    const productInfo = request.query.productInfo;
    const amount = request.query.amount;
    const firstName = request.query.firstName;
    const email = request.query.email;
    const udf1 = request.query.udf1;
    const udf2 = request.query.udf2;
    const udf3 = request.query.udf3;
    const udf4 = request.query.udf4;
    const udf5 = request.query.udf5;
    /** You can add upto 10 user defined fields **/
    // const udf6 = request.query.udf6
    // const udf7 = request.query.udf7
    // const udf8 = request.query.udf8
    // const udf9 = request.query.udf9
    // const udf10 = request.query.udf10
    const hashSequence = merchantKey + "|" + txnId + "|" + amount + "|" + productInfo + "|" + firstName + "|" + email + "|" +
        udf1 + "|" + udf2 + "|" + udf3 + "|" + udf4 + "|" + udf5 + "|" + "|" + "|" + "|" + "|" + "|" + salt;
    const hash = require('crypto').createHash('sha512').update(hashSequence).digest('hex');
    console.log("Hash", hash);
    response.send({
        hash
    });
});