feat: live service check for real time mutliplayer app (#503)

apps/secure-real-time-multiplayer-game/server.js

@@ -13,7 +13,7 @@ const app = express();
 app.use(helmet());
 app.use(helmet.noCache());
 app.use(helmet.hidePoweredBy({ setTo: 'PHP 7.4.3' }));
-app.use(cors({origin: '*'})); //For FCC testing purposes only
+app.use(cors({ origin: '*' })); //For FCC testing purposes only
 
 app.use('/public', express.static(process.cwd() + '/public'));
 app.use('/assets', express.static(process.cwd() + '/assets'));
@@ -22,27 +22,28 @@ app.use(bodyParser.json());
 app.use(bodyParser.urlencoded({ extended: true }));
 
 // Index page (static HTML)
-app.route('/')
-  .get(function (req, res) {
-    res.sendFile(process.cwd() + '/views/index.html');
-  }); 
+app.route('/').get(function (req, res) {
+  res.sendFile(process.cwd() + '/views/index.html');
+});
+
+app.get('/status/ping', (req, res) => {
+  res.send({ msg: 'pong' }).status(200);
+});
 
 //For FCC testing purposes
 fccTestingRoutes(app);
-    
+
 // 404 Not Found Middleware
-app.use(function(req, res) {
-  res.status(404)
-    .type('text')
-    .send('Not Found');
+app.use(function (req, res) {
+  res.status(404).type('text').send('Not Found');
 });
 
 const portNum = process.env.PORT || 3000;
 
 // Set up server and tests
 const server = app.listen(portNum, () => {
   console.log(`Listening on port ${portNum}`);
-  if (process.env.NODE_ENV==='test') {
+  if (process.env.NODE_ENV === 'test') {
     console.log('Running Tests...');
     setTimeout(function () {
       try {
@@ -56,7 +57,7 @@ const server = app.listen(portNum, () => {
 });
 
 // Socket.io setup:
-// Start app and bind 
+// Start app and bind
 // Socket.io to the same port
 const io = socket(server);
 const Collectible = require('./public/Collectible');
@@ -77,13 +78,21 @@ const generateCoin = () => {
     coinValue = 3;
   }
 
-  return new Collectible({ 
-    x: generateStartPos(canvasCalcs.playFieldMinX, canvasCalcs.playFieldMaxX, 5),
-    y: generateStartPos(canvasCalcs.playFieldMinY, canvasCalcs.playFieldMaxY, 5),
+  return new Collectible({
+    x: generateStartPos(
+      canvasCalcs.playFieldMinX,
+      canvasCalcs.playFieldMaxX,
+      5
+    ),
+    y: generateStartPos(
+      canvasCalcs.playFieldMinY,
+      canvasCalcs.playFieldMaxY,
+      5
+    ),
     value: coinValue,
     id: Date.now()
   });
-}
+};
 
 let coin = generateCoin();
 
@@ -104,7 +113,11 @@ io.sockets.on('connection', socket => {
       movingPlayer.x = obj.x;
       movingPlayer.y = obj.y;
 
-      socket.broadcast.emit('move-player', { id: socket.id, dir, posObj: { x: movingPlayer.x, y: movingPlayer.y } });
+      socket.broadcast.emit('move-player', {
+        id: socket.id,
+        dir,
+        posObj: { x: movingPlayer.x, y: movingPlayer.y }
+      });
     }
   });
 
@@ -114,10 +127,14 @@ io.sockets.on('connection', socket => {
       stoppingPlayer.x = obj.x;
       stoppingPlayer.y = obj.y;
 
-      socket.broadcast.emit('stop-player', { id: socket.id, dir, posObj: { x: stoppingPlayer.x, y: stoppingPlayer.y } });
+      socket.broadcast.emit('stop-player', {
+        id: socket.id,
+        dir,
+        posObj: { x: stoppingPlayer.x, y: stoppingPlayer.y }
+      });
     }
   });
-  
+
   socket.on('destroy-item', async ({ playerId, coinValue, coinId }) => {
     if (!destroyedCoins.includes(coinId)) {
       const scoringPlayer = currPlayers.find(obj => obj.id === playerId);
@@ -135,7 +152,7 @@ io.sockets.on('connection', socket => {
       if (scoringPlayer.score >= 100) {
         sock.emit('end-game', 'win');
         sock.broadcast.emit('end-game', 'lose');
-      } 
+      }
 
       // Generate new coin and send it to all players
       coin = generateCoin();