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routes.js
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routes.js
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const checksumLib = require("./Paytm/checksum");
// A checksum is a string of numbers and letters that acts as a fingerprint for a file
// against which comparisons can be made later to detect errors in the data
// They are important because we use them to check file for integrity (Authentication purposes)
const port = process.env.PORT || 3000;
var today = new Date();
module.export = function(app){
app.get("./payment",function(req,res){
let params = {};
params['MID'] = "TaYuBb99934306879481",
params['WEBSITE'] = "WEBSTAGING",
params['CHANNEL_ID'] = "WEB",
params["INDUSTRY_TYPE_ID"] = "Retail",
//params["ORDER_ID"] = "ORDER_ID_0001",
//params["CUSTOMER_ID"] = "CUST_ID_0001",
params["ORDER_ID"] = "ORD"+today.getDate()+today.getHours()+today.getMinutes()+today.getSeconds(),
params["CUSTOMER_ID"] = "CUS"+today.getDate()+today.getHours()+today.getMinutes()+today.getSeconds(),
params["TXN_AMOUNT"] = "1",
params["CALLBACK_URL"] = "http://localhost:"+port+"/callback",
params["EMAIL"] = "k.yukt.07@gmail.com",
params["MOBILE_NO"] = "9915008166"
checksumLib.genchecksum(params,"CgZfIojFtOlS8%ve",function(err,checksum){
let txn_url = "https://securegw-stage.paytm.in/order/process";
let formFields= "";
for(x in params){
formFields += "<input type='hidden' name='"+x+"' value='"+params[x]+"'/>"
}
formFields += "<input type='hidden' name='CHECKSUMHASH' value='"+checksum+"'>"
var html = '<html><body><center> Donating for a good cause. Transaction in process</center><form method="post" action="'+txn_url+'" name="paymentForm">'+formFields+'</form><script type="text/javascript">document.paymentForm.submit()</script></body></html>'
res.writeHead(200,{'Content-Type':'text/html'});
res.write(html);
res.end();
})
})
}