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krharsh17/paytm.js

Created December 8, 2019 19:05
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paytm.js
switch(request.url){
case '/':
console.log("/ has started");
response.writeHead(200 , {'Content-type':'text/html'});
response.write('<html><head><title>Paytmdddddd</title></head><body>');
response.write('</body></html>');
response.end();
break;
case '/generate_checksum':
if(request.method == 'POST'){
var paramarray = {};
paramarray['MID'] = 'xxxxxxxxxxxxxx'; //Provided by Paytm
paramarray['ORDER_ID'] = 'ORDER00001'; //unique OrderId for every request
paramarray['CUST_ID'] = 'CUST0001'; // unique customer identifier
paramarray['INDUSTRY_TYPE_ID'] = 'xxxxxxxxx'; //Provided by Paytm
paramarray['CHANNEL_ID'] = 'WAP'; //Provided by Paytm
paramarray['TXN_AMOUNT'] = '1.00'; // transaction amount
paramarray['WEBSITE'] = 'xxxxxxxxxxxx'; //Provided by Paytm
paramarray['CALLBACK_URL'] = 'https://pguat.paytm.com/paytmchecksum/paytmCallback.jsp';//Provided by Paytm
paramarray['EMAIL'] = 'abc@gmail.com'; // customer email id
paramarray['MOBILE_NO'] = '9999999999'; // customer 10 digit mobile no.
paytm_checksum.genchecksum(paramarray, paytm_config.MERCHANT_KEY, function (err, checksum) {
console.log('Checksum: ', checksum, "\n");
response.writeHead(200, {'Content-type' : 'text/json','Cache-Control': 'no-cache'});
response.write(JSON.stringify(checksum));
response.end();
});
}else{
response.writeHead(200, {'Content-type' : 'text/json'});
response.end();
}
break;
case '/verify_checksum':
if(request.method == 'POST'){
var fullBody = '';
request.on('data', function(chunk) {
fullBody += chunk.toString();
});
request.on('end', function() {
var decodedBody = querystring.parse(fullBody);
console.log(decodedBody);
// get received checksum
var checksum = decodedBody.CHECKSUMHASH;
// remove this from body, will be passed to function as separate argument
delete decodedBody.CHECKSUMHASH;
response.writeHead(200, {'Content-type' : 'text/html','Cache-Control': 'no-cache'});
if(paytm_checksum.verifychecksum(decodedBody, paytm_config.MERCHANT_KEY, checksum)) {
console.log("Checksum Verification => true");
response.write("Checksum Verification => true");
}else{
console.log("Checksum Verification => false");
response.write("Checksum Verification => false");
}
// if checksum is validated Kindly verify the amount and status
// if transaction is successful
// kindly call Paytm Transaction Status API and verify the transaction amount and status.
// If everything is fine then mark that transaction as successful into your DB.
response.end();
});
}else{
response.writeHead(200, {'Content-type' : 'text/json'});
response.end();
}
break;
}
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