Add healthcheck route

server/routes/index.coffee

@@ -1,2 +1,36 @@
 module.exports.setup = (app) ->
-  app.get('/db/products', require('./db/product').get)
+  app.get '/db/products', require('./db/product').get
+
+  app.get '/healthcheck', (req, res) ->
+    try
+      async = require 'async'
+      User = require '../users/User'
+      async.waterfall [
+        (callback) ->
+          User.find({}).limit(1).exec(callback)
+        , (last, callback) ->
+          return("No users found") unless callback.length > 0
+          User.findOne(slug: 'healthcheck').exec(callback)
+        , (hcuser, callback) ->
+          # Create health check user if it doesnt exist
+          return callback(null, hcuser) if hcuser
+          user = new User
+            anonymous: false
+            name: 'healthcheck'
+            nameLower: 'healthcheck'
+            slug: 'healthcheck'
+            email: 'rob+healthcheck@codecombat.com'
+            emailLower: 'rob+healthcheck@codecombat.com'
+          user.set 'testGroupNumber', Math.floor(Math.random() * 256)  # also in app/core/auth
+          user.save (err) ->
+            return callback(err) if err
+            callback(null, user)
+
+        , (hcuser, callback) ->
+          activity = hcuser.trackActivity 'healthcheck', 1
+          hcuser.update {activity: activity}, callback
+      ], (err) ->
+        return res.status(500).send(err.toString()) if err
+        res.send("OK")
+    catch error
+      res.status(500).send(error.toString())