Added a script to recalculate all gems purchased.

scripts/recalculatePayments.coffee

@@ -0,0 +1,55 @@
+database = require '../server/commons/database'
+mongoose = require 'mongoose'
+log = require 'winston'
+async = require 'async'
+
+### SET UP ###
+do (setupLodash = this) ->
+  GLOBAL._ = require 'lodash'
+  _.str = require 'underscore.string'
+  _.mixin _.str.exports()
+  GLOBAL.tv4 = require('tv4').tv4
+
+database.connect()
+
+User = require '../server/users/User'
+Payment = require '../server/payments/Payment'
+PaymentHandler = require '../server/payments/payment_handler'
+
+t0 = new Date().getTime()
+total = 100000
+#testUsers = ['livelily+test31@gmail.com', 'livelily+test37@gmail.com']
+if testUsers?
+  userQuery = emailLower: {$in: testUsers}
+else
+  userQuery = $or: [
+    {stripe: {$exists: true}}
+    {'purchased.gems': {$gt: 0}}
+  ]
+User.count userQuery, (err, count) -> total = count
+
+onFinished = ->
+  t1 = new Date().getTime()
+  runningTime = ((t1-t0)/1000/60/60).toFixed(2)
+  console.log "we finished in #{runningTime} hours"
+  process.exit()
+
+userStream = User.find(userQuery).sort('_id').stream()
+streamFinished = false
+usersTotal = 0
+usersFinished = 0
+numberRunning = 0
+doneWithUser = ->
+  ++usersFinished
+  numberRunning -= 1
+  userStream.resume()
+  onFinished?() if streamFinished and usersFinished is usersTotal
+
+userStream.on 'error', (err) -> log.error err
+userStream.on 'close', -> streamFinished = true
+userStream.on 'data', (user) ->
+  ++usersTotal
+  numberRunning += 1
+  userStream.pause() if numberRunning > 20
+  user._id = user.get('_id')
+  PaymentHandler.recalculateGemsFor user, doneWithUser, true

server/achievements/earned_achievement_handler.coffee

@@ -124,6 +124,7 @@ class EarnedAchievementHandler extends Handler
       res.send(earnedAchievements)
 
   recalculate: (req, res) ->
+    return @sendForbiddenError(res) unless req.user?.isAdmin()
     onSuccess = (data) => log.debug 'Finished recalculating achievements'
     if 'achievements' of req.body # Support both slugs and IDs separated by commas
       achievementSlugsOrIDs = req.body.achievements

server/payments/payment_handler.coffee

@@ -351,16 +351,20 @@ PaymentHandler = class PaymentHandler extends Handler
     else
       user.update({$inc: {'purchased.gems': gems}}, {}, (err) -> done(err))
 
-  recalculateGemsFor: (user, done) ->
+  recalculateGemsFor: (user, done, saveIfUnchanged=true) ->
 
     Payment.find({recipient: user._id}).select('gems').exec((err, payments) ->
       gems = _.reduce payments, ((sum, p) -> sum + p.get('gems')), 0
       purchased = _.clone(user.get('purchased'))
       purchased ?= {}
+      if (purchased.gems or 0) isnt gems
+        log.debug "Updating #{user.get('_id')} gems from #{purchased.gems} to #{gems} from #{payments.length} payments; #{user.get('email')} #{user.get('name')}"
+      else unless saveIfUnchanged
+        log.debug "#{user.get('_id')} already had #{purchased.gems} #{gems} from #{payments.length} payments; #{user.get('email')} #{user.get('name')}"
+        return done()
       purchased.gems = gems
       user.set('purchased', purchased)
       user.save((err) -> done(err))
-
     )
 
   sendPaymentHipChatMessage: (options) ->