refactoring, added rooms api

app/models/managers/RoomManager.php

@@ -0,0 +1,31 @@
+<?php
+class RoomManager{
+	public static $rooms;
+
+	static function getDefaultRoomId() {
+		$defaultRoom = Db::loadOne("SELECT room_id FROM rooms WHERE 'default' = 1");
+		return $defaultRoom['room_id'];
+	}
+
+	static function getAllRooms () {
+		$allRoom = Db::loadAll ("SELECT rooms.*, COUNT(devices.device_id) as device_count FROM rooms LEFT JOIN devices ON (devices.room_id=rooms.room_id) GROUP BY rooms.room_id");
+		return $allRoom;
+	}
+
+	public static function create ($name) {
+		$room = array (
+			'name' => $name,
+		);
+		try {
+			Db::add ('rooms', $room);
+		} catch(PDOException $error) {
+			echo $error->getMessage();
+			die();
+		}
+	}
+
+	public static function delete ($roomId) {
+		Db::command ('DELETE FROM rooms WHERE room_id=?', array ($roomId));
+	}
+}
+?>