add server cron for preening stale accounts

package.json

@@ -20,7 +20,8 @@
     "lodash": "*",
     "coffee-script": "*",
     "toobusy": "~0.2.0",
-    "underscore": "*"
+    "underscore": "*",
+    "mongoskin": "*"
   },
   "private": true,
   "subdomain": "habitrpg",

src/server/cron.coffee

@@ -0,0 +1,35 @@
+moment = require('moment')
+mongo = require("mongoskin")
+_ = require('underscore')
+
+module.exports.deleteStaleAccounts = () ->
+
+  unRegistered = { "auth.local": {$exists: false} , "auth.facebook": {$exists: false} }
+  registered = registered = { $or: [
+    { 'auth.local': { $exists: true } },
+    { 'auth.facebook': { $exists: true} }
+  ]};
+
+  collection = mongo.db(process.env.NODE_DB_URI, {safe:true}).collection("users")
+
+  collection.count registered, (err, result) -> console.log("#{result} registered users [before]")
+  collection.count unRegistered, (err, result) -> console.log("#{result} un-registered users [before]")
+
+  isValidDate = (d) ->
+    return false  if Object::toString.call(d) isnt "[object Date]"
+    not isNaN(d.getTime())
+
+  today = +new Date
+  collection.findEach unRegistered, (err, user) ->
+    throw err if err
+    return unless user?
+    lastCron = new Date(user.lastCron)
+    unless isValidDate(lastCron)
+      console.log user.lastCron
+      return
+    diff = Math.abs(moment(today).sod().diff(moment(lastCron).sod(), "days"))
+    if diff > 30
+      collection.remove {_id: user._id}, (err, res) -> throw err if err
+
+  collection.count registered, (err, result) -> console.log("#{result} registered users [after]")
+  collection.count unRegistered, (err, result) -> console.log("#{result} un-registered users [after]")