feat: backend web-sockets solution

backend/server.js

@@ -0,0 +1,47 @@
+const express = require('express');
+const dotenv = require('dotenv');
+
+const channelController = require('./controllers/ChannelController');
+const streamController = require('./controllers/StreamController');
+
+dotenv.config();
+
+const app = express();
+app.use(express.json());
+
+const apiRouter = express.Router();
+
+apiRouter.get('/', channelController.getChannels);
+apiRouter.get('/current', channelController.getCurrentChannel);
+
+app.use('/channels', apiRouter);
+
+const PORT = 5000;
+const server = app.listen(PORT, () => {
+    console.log(`Server listening on Port ${PORT}`);
+    streamController.start();
+});
+
+
+// Web Sockets
+const io = require('socket.io')(server)
+
+const connectedUsers = {}
+
+io.on('connection', socket => {
+
+  socket.on('new-user', name => {
+    connectedUsers[socket.id] = name
+    socket.broadcast.emit('user-connected', name)
+  })
+
+  socket.on('disconnect', () => {
+    socket.broadcast.emit('user-disconnected', connectedUsers[socket.id])
+    delete connectedUsers[socket.id]
+  })
+
+  ChannelSocketHandler(io, socket);
+
+  ChatSocketHandler(io, socket);
+
+})