PayPal IPN / PDT Handler

paypal.js

var express = require('express');
var request = require('request');
var app = express();

var ipn = require('paypal-ipn');
var bodyParser = require('body-parser');

app.use(bodyParser.json());
app.use(bodyParser.urlencoded({
    extended: true
}));

app.post('/paypal', function(req, res) {
    var params = req.body;
    res.sendStatus(200);

    ipn.verify(params, {
        'allow_sandbox': true
    }, function callback(err, msg) {
        if (err) {
            console.log(err);
        } else {
            console.log(params);
            console.log('Verify no error.');
            if (params.payment_status == 'Completed') {
                console.log('Payment completed.');
            }
        }
    });
});

app.get('/paypal', function(req, res) {
    res.sendStatus(200);
    console.log('received GET (PDT)');
    console.log(req.query);

    var tx = req.query.tx;
    var token = "ZT9dZUWueDV9hxqfGr_A8cE7bXvrmONGk-mTFxIay8LirIBG5t0V1T0v2tC";

    request.post({
        url: 'https://www.sandbox.paypal.com/cgi-bin/webscr',
        form: {
            'cmd': '_notify-synch',
            'tx': tx,
            'at': token
        }
    }, function(err, httpResponse, body) {
        console.log(body);
    });
});

app.listen(9090, function() {
    console.log('PayPal handler running...')
});