Add in support for threads for comments

services/chat/app/coffee/Features/Threads/ThreadManager.coffee

@@ -0,0 +1,34 @@
+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
+		}, callback
+	
+	
+