Adds PayPal SDK sample to the API controller

controllers/api.js

@@ -11,6 +11,7 @@ var tumblr = require('tumblr.js');
 var foursquare = require('node-foursquare')({ secrets: secrets.foursquare });
 var Github = require('github-api');
 var Twit = require('twit');
+var paypal = require('paypal-rest-sdk');
 
 /**
  * GET /api
@@ -254,3 +255,77 @@ exports.getTwitter = function(req, res, next) {
     });
   });
 };
+
+/**
+ * GET /api/paypal
+ * PayPal SDK example
+ */
+exports.getPayPal = function(req, res, next) {
+  paypal.configure(secrets.paypal);
+  var payment_details = {
+    'intent': 'sale',
+    'payer': {
+      'payment_method': 'paypal'
+    },
+    'redirect_urls': {
+      'return_url': secrets.paypal.returnUrl,
+      'cancel_url': secrets.paypal.cancelUrl
+    },
+    'transactions': [{
+      'description': 'Node.js Boilerplate',
+      'amount': {
+        'currency': 'USD',
+        'total': '2.99'
+      }
+    }]
+  };
+  paypal.payment.create(payment_details, function (error, payment) {
+    if(error){
+      console.log(error);
+    } else {
+      req.session.payment_id = payment.id;
+      var links = payment.links;
+      for (var i = 0; i < links.length; i++) {
+        if (links[i].rel === 'approval_url') {
+          res.render('api/paypal', {
+            approval_url: links[i].href
+          });
+        }
+      }
+    }
+  });
+};
+
+/**
+ * GET /api/paypal/success
+ * PayPal SDK example
+ */
+exports.getPayPalSuccess = function(req, res, next) {
+  var payment_id = req.session.payment_id;
+  var payment_details = { 'payer_id': req.query.PayerID };
+  paypal.payment.execute(payment_id, payment_details, function(error, payment){
+    if(error){
+      res.render('api/paypal', {
+        result: true,
+        success: false
+      });
+    } else {
+      res.render('api/paypal', {
+        result: true,
+        success: true
+      });
+    }
+  });
+};
+
+/**
+ * GET /api/paypal/cancel
+ * PayPal SDK example
+ */
+exports.getPayPalCancel = function(req, res, next) {
+  req.session.payment_id = null;
+  res.render('api/paypal', {
+    result: true,
+    canceled: true
+  });
+};