Refactor : sendReadyHandler의 game관련 로직을 gameController로 이동

이유:
- 해당 handler를 제외하고도 다른 곳에서 위의 로직을 사용하는 경우가 발생

server/socket/gameController.js

@@ -0,0 +1,68 @@
+const rooms = require('./rooms');
+const io = require('./io');
+const { MIN_USER_COUNT } = require('../config');
+
+const assignViewer = socket => {
+  const room = rooms.getRoomByRoomId(socket.roomId);
+  const { streamerSocketId } = room;
+  const socketIds = Object.keys(room.players);
+  socketIds.forEach(socketId => {
+    if (socketId !== streamerSocketId) {
+      io.to(socketId).emit('assignViewer', { streamerSocketId });
+    }
+  });
+};
+
+const assignStreamer = socket => {
+  const { streamerSocketId } = rooms.getRoomByRoomId(socket.roomId);
+  io.to(streamerSocketId).emit('assignStreamer');
+};
+
+const startRound = socket => {
+  const { roomId } = socket;
+  rooms.setRound(roomId);
+  io.to(roomId).emit('roundStart', {
+    currentRound: rooms.getRoomByRoomId(roomId).currentRound,
+  });
+};
+
+const startSet = socket => {
+  const { roomId } = socket;
+  rooms.setSet(roomId);
+  io.to(roomId).emit('setStart', {
+    currentSet: rooms.getRoomByRoomId(roomId).currentSet,
+  });
+  assignStreamer(socket);
+  assignViewer(socket);
+};
+
+const endSet = roomId => {
+  const room = rooms.getRoomByRoomId(roomId);
+  const { streamerSocketId } = room;
+  room.players[streamerSocketId].type = 'viewer';
+  io.to(roomId).emit('setEnd', { currentSet: room.currentSet });
+};
+
+const startGame = socket => {
+  const { roomId } = socket;
+  rooms.resetGameProgress(roomId);
+  rooms.setRoomStatusByRoomId(roomId, 'playing');
+  io.to(roomId).emit('gameStart');
+  startRound(socket);
+  startSet(socket);
+};
+
+const isGameContinuable = socket => {
+  const room = rooms.getRoomByRoomId(socket.roomId);
+  return Object.keys(room.players).length > MIN_USER_COUNT;
+};
+
+module.exports = {
+  assignStreamer,
+  assignViewer,
+  startSet,
+  startRound,
+  startGame,
+  endSet,
+  isGameContinuable,
+};

server/socket/handlers/sendReadyHandler.js

@@ -1,45 +1,6 @@
 const rooms = require('../rooms');
 const io = require('../io');
-
-const assignViewer = socket => {
-  const room = rooms.getRoomByRoomId(socket.roomId);
-  const { streamerSocketId } = room;
-  const socketIds = Object.keys(room.players);
-  socketIds.forEach(socketId => {
-    if (socketId !== streamerSocketId) {
-      io.to(socketId).emit('assignViewer', { streamerSocketId });
-    }
-  });
-};
-
-const assignStreamer = socket => {
-  const { streamerSocketId } = rooms.getRoomByRoomId(socket.roomId);
-  io.to(streamerSocketId).emit('assignStreamer');
-};
-
-const startRound = roomId => {
-  rooms.setRound(roomId);
-  io.to(roomId).emit('roundStart', {
-    currentRound: rooms.getRoomByRoomId(roomId).currentRound,
-  });
-};
-
-const startSet = roomId => {
-  rooms.setSet(roomId);
-  io.to(roomId).emit('setStart', {
-    currentSet: rooms.getRoomByRoomId(roomId).currentSet,
-  });
-};
-
-const startGame = (socket, roomId) => {
-  rooms.resetGameProgress(roomId);
-  rooms.setRoomStatusByRoomId(roomId, 'playing');
-  io.to(roomId).emit('gameStart');
-  startRound(roomId);
-  startSet(roomId);
-  assignStreamer(socket);
-  assignViewer(socket);
-};
+const { startGame } = require('../gameController');
 
 const setPlayerReady = (socket, isReady) => {
   const room = rooms.findRoomBySocket(socket);