mongojs = require("../../mongojs")
db = mongojs.db
ObjectId = mongojs.ObjectId

module.exports = ThreadManager =
	GLOBAL_THREAD: "GLOBAL"

	findOrCreateThread: (project_id, thread_id, callback = (error, thread) ->) ->
		query =
			project_id: ObjectId(project_id.toString())

		if thread_id? and thread_id != ThreadManager.GLOBAL_THREAD
			query.thread_id = ObjectId(thread_id.toString())

		# Threads used to be called rooms, and still are in the DB
		db.rooms.findOne query, (error, thread) ->
			return callback(error) if error?
			if thread?
				callback null, thread
			else
				db.rooms.save query, (error, thread) ->
					return callback(error) if error?
					callback null, thread
	
	findAllThreadRooms: (project_id, callback = (error, rooms) ->) ->
		db.rooms.find {
			project_id: ObjectId(project_id.toString())
			thread_id: { $exists: true }
		}, {
			thread_id: 1,
			resolved: 1
		}, callback
	
	resolveThread: (project_id, thread_id, user_id, callback = (error) ->) ->
		db.rooms.update {
			project_id: ObjectId(project_id.toString())
			thread_id: ObjectId(thread_id.toString())
		}, {
			$set: {
				resolved: {
					user_id: user_id
					ts: new Date()
				}
			}
		}, callback
	
	reopenThread: (project_id, thread_id, callback = (error) ->) ->
		db.rooms.update {
			project_id: ObjectId(project_id.toString())
			thread_id: ObjectId(thread_id.toString())
		}, {
			$unset: {
				resolved: true
			}
		}, callback

	deleteThread: (project_id, thread_id, callback = (error, room_id) ->) ->
		@findOrCreateThread project_id, thread_id, (error, room) ->
			return callback(error) if error?
			db.rooms.remove {
				_id: room._id
			}, (error) ->
				return callback(error) if error?
				return callback null, room._id