amalj07/initiateTransaction.js

## initiateTransaction.js
let body = ''

const orderId = 'TEST_' + new Date().getTime()

req.on('error', (err) => {
    console.error(err.stack)
}).on('data', (chunk) => {
    body += chunk
}).on('end', () => {
    let data = qs.parse(body)

    const paytmParams = {}

    paytmParams.body = {
        "requestType": "Payment",
        "mid": PaytmConfig.PaytmConfig.mid,
        "websiteName": PaytmConfig.PaytmConfig.website,
        "orderId": orderId,
        "callbackUrl": "http://localhost:3000/callback",
        "txnAmount": {
            "value": data.amount,
            "currency": "INR",
        },
        "userInfo": {
            "custId": data.email,
        },
    };

    PaytmChecksum.generateSignature(JSON.stringify(paytmParams.body), PaytmConfig.PaytmConfig.key).then(function (checksum) {

        paytmParams.head = {
            "signature": checksum
        };

        var post_data = JSON.stringify(paytmParams);

        var options = {

            /* for Staging */
            hostname: 'securegw-stage.paytm.in',

            /* for Production */
            // hostname: 'securegw.paytm.in',

            port: 443,
            path: `/theia/api/v1/initiateTransaction?mid=${PaytmConfig.PaytmConfig.mid}&orderId=${orderId}`,
            method: 'POST',
            headers: {
                'Content-Type': 'application/json',
                'Content-Length': post_data.length
            }
        };

        var response = "";
        var post_req = https.request(options, function (post_res) {
            post_res.on('data', function (chunk) {
                response += chunk;
            });

            post_res.on('end', function () {
                response = JSON.parse(response)
                console.log('txnToken:', response);

                res.writeHead(200, { 'Content-Type': 'text/html' })
                res.write(`<html>
                    <head>
                        <title>Show Payment Page</title>
                    </head>
                    <body>
                        <center>
                            <h1>Please do not refresh this page...</h1>
                        </center>
                        <form method="post" action="https://securegw-stage.paytm.in/theia/api/v1/showPaymentPage?mid=${PaytmConfig.PaytmConfig.mid}&orderId=${orderId}" name="paytm">
                            <table border="1">
                                <tbody>
                                    <input type="hidden" name="mid" value="${PaytmConfig.PaytmConfig.mid}">
                                        <input type="hidden" name="orderId" value="${orderId}">
                                        <input type="hidden" name="txnToken" value="${response.body.txnToken}">
                             </tbody>
                          </table>
                                        <script type="text/javascript"> document.paytm.submit(); </script>
                       </form>
                    </body>
                 </html>`)
                res.end()
            });
        });

        post_req.write(post_data);
        post_req.end();
    });
})
	let body = ''

	const orderId = 'TEST_' + new Date().getTime()

	req.on('error', (err) => {
	console.error(err.stack)
	}).on('data', (chunk) => {
	body += chunk
	}).on('end', () => {
	let data = qs.parse(body)

	const paytmParams = {}

	paytmParams.body = {
	"requestType": "Payment",
	"mid": PaytmConfig.PaytmConfig.mid,
	"websiteName": PaytmConfig.PaytmConfig.website,
	"orderId": orderId,
	"callbackUrl": "http://localhost:3000/callback",
	"txnAmount": {
	"value": data.amount,
	"currency": "INR",
	},
	"userInfo": {
	"custId": data.email,
	},
	};

	PaytmChecksum.generateSignature(JSON.stringify(paytmParams.body), PaytmConfig.PaytmConfig.key).then(function (checksum) {

	paytmParams.head = {
	"signature": checksum
	};

	var post_data = JSON.stringify(paytmParams);

	var options = {

	/* for Staging */
	hostname: 'securegw-stage.paytm.in',

	/* for Production */
	// hostname: 'securegw.paytm.in',

	port: 443,
	path: `/theia/api/v1/initiateTransaction?mid=${PaytmConfig.PaytmConfig.mid}&orderId=${orderId}`,
	method: 'POST',
	headers: {
	'Content-Type': 'application/json',
	'Content-Length': post_data.length
	}
	};

	var response = "";
	var post_req = https.request(options, function (post_res) {
	post_res.on('data', function (chunk) {
	response += chunk;
	});

	post_res.on('end', function () {
	response = JSON.parse(response)
	console.log('txnToken:', response);

	res.writeHead(200, { 'Content-Type': 'text/html' })
	res.write(`<html>
	<head>
	<title>Show Payment Page</title>
	</head>
	<body>
	<center>
	<h1>Please do not refresh this page...</h1>
	</center>
	<form method="post" action="https://securegw-stage.paytm.in/theia/api/v1/showPaymentPage?mid=${PaytmConfig.PaytmConfig.mid}&orderId=${orderId}" name="paytm">
	<table border="1">
	<tbody>
	<input type="hidden" name="mid" value="${PaytmConfig.PaytmConfig.mid}">
	<input type="hidden" name="orderId" value="${orderId}">
	<input type="hidden" name="txnToken" value="${response.body.txnToken}">
	</tbody>
	</table>
	<script type="text/javascript"> document.paytm.submit(); </script>
	</form>
	</body>
	</html>`)
	res.end()
	});
	});

	post_req.write(post_data);
	post_req.end();
	});
	})