edited readme

backend/services/roomService.js

@@ -0,0 +1,30 @@
+const Room = require('../models/room');
+const { sendToPlayersData } = require('../socket/emits');
+
+const getRoom = async roomId => {
+    return await Room.findOne({ _id: roomId }).exec();
+};
+
+const getRooms = async () => {
+    return await Room.find().exec();
+};
+
+const updateRoom = async room => {
+    return await Room.findOneAndUpdate({ _id: room._id }, room).exec();
+};
+
+const getJoinableRoom = async () => {
+    return await Room.findOne({ full: false, started: false }).exec();
+};
+
+const createNewRoom = data => {
+    const room = new Room(data);
+    room.save();
+    return room;
+};
+
+Room.watch().on('change', async data => {
+    sendToPlayersData(await getRoom(data.documentKey._id));
+});
+
+module.exports = { getRoom, getRooms, updateRoom, getJoinableRoom, createNewRoom };