Initial commit 🍀

src/api/streaming.ts

@@ -0,0 +1,69 @@
+import * as http from 'http';
+import * as websocket from 'websocket';
+import * as redis from 'redis';
+import User from './models/user';
+
+import homeStream from './stream/home';
+import messagingStream from './stream/messaging';
+
+module.exports = (server: http.Server) => {
+	/**
+	 * Init websocket server
+	 */
+	const ws = new websocket.server({
+		httpServer: server
+	});
+
+	ws.on('request', async (request) => {
+		const connection = request.accept();
+
+		const user = await authenticate(connection);
+
+		// Connect to Redis
+		const subscriber = redis.createClient(
+			config.redis.port, config.redis.host);
+
+		connection.on('close', () => {
+			subscriber.unsubscribe();
+			subscriber.quit();
+		});
+
+		const channel =
+			request.resourceURL.pathname === '/' ? homeStream :
+			request.resourceURL.pathname === '/messaging' ? messagingStream :
+			null;
+
+		if (channel !== null) {
+			channel(request, connection, subscriber, user);
+		} else {
+			connection.close();
+		}
+	});
+};
+
+function authenticate(connection: websocket.connection): Promise<any> {
+	return new Promise((resolve, reject) => {
+		// Listen first message
+		connection.once('message', async (data) => {
+			const msg = JSON.parse(data.utf8Data);
+
+			// Fetch user
+			// SELECT _id
+			const user = await User
+				.findOne({
+					token: msg.i
+				}, {
+					_id: true
+				});
+
+			if (user === null) {
+				connection.close();
+				return;
+			}
+
+			connection.send('authenticated');
+
+			resolve(user);
+		});
+	});
+}