From 123f8192f4be1e52fc2b3283794d380b9a0b8260 Mon Sep 17 00:00:00 2001
From: Tyler Renelle <tylerrenelle@gmail.com>
Date: Mon, 24 Mar 2014 21:51:49 -0600
Subject: [PATCH] feat(subscriptions): add misc. IPN handler. For this case, it
 will catch off-site cancelled subscriptions

---
 src/controllers/payments.js | 25 +++++++++++++++++++++++++
 src/routes/payments.js      |  1 +
 2 files changed, 26 insertions(+)

diff --git a/src/controllers/payments.js b/src/controllers/payments.js
index a5c69f3116..7956a7db8c 100644
--- a/src/controllers/payments.js
+++ b/src/controllers/payments.js
@@ -212,4 +212,29 @@ api.paypalCheckoutSuccess = function(req,res,next) {
       });
     });
   });
+}
+
+/**
+ * General IPN handler. We could use this for all paypal transaction handling (instead of the above functions), but I've
+ * found it extremely unreliable. Instead, here we'll cancel HabitRPG subscriptions for users who manually cancel their
+ * recurring paypal payments.
+ */
+api.paypalIPN = function(req, res, next) {
+  // Must respond to PayPal IPN request with an empty 200 first, if using Express uncomment the following:
+  res.send(200);
+  ipn.verify(req.body, function callback(err, msg) {
+    if (err) return logger.error(msg);
+    switch (req.body.txn_type) {
+      // TODO what's the diff b/w the two data.txn_types below? The docs recommend subscr_cancel, but I'm getting the other one instead...
+      case 'recurring_payment_profile_cancel':
+      case 'subscr_cancel':
+        User.findOne({'purchased.plan.customerId':req.body.recurring_payment_id},function(err, user){
+          if (err) return logger.error(err);
+          if (_.isEmpty(user)) return; // looks like the cancellation was already handled properly above (see api.paypalSubscribeCancel)
+          cancelSubscription(user);
+          user.save();
+        });
+        break;
+    }
+  });
 }
\ No newline at end of file
diff --git a/src/routes/payments.js b/src/routes/payments.js
index 1109f85c5c..bc10df5f84 100644
--- a/src/routes/payments.js
+++ b/src/routes/payments.js
@@ -9,6 +9,7 @@ router.get('/paypal/checkout/success', payments.paypalCheckoutSuccess);
 router.get('/paypal/subscribe', auth.authWithUrl, payments.paypalSubscribe);
 router.get('/paypal/subscribe/success', payments.paypalSubscribeSuccess);
 router.get('/paypal/subscribe/cancel', auth.authWithUrl, payments.paypalSubscribeCancel);
+router.post('/paypal/ipn', payments.paypalIPN); // misc ipn handling
 
 router.post("/stripe/checkout", auth.auth, payments.stripeCheckout);
 //router.get("/stripe/subscribe", auth.authWithUrl, payments.stripeSubscribe); // checkout route is used (above) with ?plan= instead