codecombat/server/plugins/achievements.coffee
2014-12-09 13:41:44 -08:00

48 lines
2.2 KiB
CoffeeScript

mongoose = require 'mongoose'
EarnedAchievement = require '../achievements/EarnedAchievement'
LocalMongo = require '../../app/lib/LocalMongo'
util = require '../../app/core/utils'
log = require 'winston'
# Warning: To ensure proper functioning one must always `find` documents before saving them.
# Otherwise the schema's `post init` won't be triggered and the plugin can't keep track of changes
# TODO if this is still a common scenario I could implement a database hit after all, but only
# on the condition that it's necessary and still not too frequent in occurrence
AchievablePlugin = (schema, options) ->
User = require '../users/User' # Avoid mutual inclusion cycles
Achievement = require '../achievements/Achievement'
before = {}
# Keep track the document before it's saved
schema.post 'init', (doc) ->
before[doc.id] = doc.toObject()
# TODO check out how many objects go unreleased
# Check if an achievement has been earned
schema.post 'save', (doc) ->
isNew = not doc.isInit('_id') or not (doc.id of before)
originalDocObj = before[doc.id] unless isNew
if doc.isInit('_id') and not doc.id of before
log.warn 'document was already initialized but did not go through `init` and is therefore treated as new while it might not be'
category = doc.constructor.collection.name
loadedAchievements = Achievement.getLoadedAchievements()
#log.debug 'about to save ' + category + ', number of achievements is ' + Object.keys(loadedAchievements).length
if category of loadedAchievements
docObj = doc.toObject()
for achievement in loadedAchievements[category]
do (achievement) ->
query = achievement.get('query')
return log.warn("Empty achievement query for #{achievement.get('name')}.") if _.isEmpty query
isRepeatable = achievement.get('proportionalTo')?
alreadyAchieved = if isNew then false else LocalMongo.matchesQuery originalDocObj, query
newlyAchieved = LocalMongo.matchesQuery(docObj, query)
return unless newlyAchieved and (not alreadyAchieved or isRepeatable)
EarnedAchievement.createForAchievement(achievement, doc, originalDocObj)
delete before[doc.id] if doc.id of before
module.exports = AchievablePlugin