Initial commit

backend/src/SocketIO/SocketIOManager.js

@@ -0,0 +1,69 @@
+const socketIO = require("socket.io");
+const http = require("http");
+const DataBaseManager = require("../Database/DataBaseManager");
+const ExpressManager = require("../Express/ExpressManager");
+const LobbyManager = require("./LobbyManager/LobbyManager");
+const ClientHandler = require("./LobbyManager/ClientHandler");
+require("dotenv").config();
+
+class SocketIOManager {
+    /** @param {DataBaseManager} dbManager @param {ExpressManager} expressManager */
+    constructor(dbManager, expressManager) {
+        this.db = dbManager;
+        this.express = expressManager;
+        
+        
+        this.server = http.createServer(this.express.app);
+        
+        /** @type {import("socket.io").Server} */
+        this.io = socketIO(this.server);
+        
+        // Dadurch bekommen wir Zugriff auf den Eingeloggten Nutzer
+        this.io.use((socket, next) => {
+            this.express.sessionMiddleware(socket.request, socket.request.res || {}, next);
+        });
+
+        this.io.use((socket, next) => {this.useAuth(socket, next)});
+
+        /*
+            Der LobbyManager kümmert sich um alle Lobbys
+            Der LobbyHandler kümmert sich um die einzelnen Anfragen der Clients
+         */
+        this.lobbyManager = new LobbyManager(this.io);
+
+        this.io.on("connection", (socket) => { this.sendToRightManager(socket) });
+
+        // Startet express und socket.io
+        this.server.listen(process.env.PORT, () => {
+            console.log(`Der Server ist gestartet und unter http://localhost:${process.env.PORT} erreichbar!`);
+        });
+    }
+
+    /** @param {socketIO.Socket} socket @param {socketIO.ExtendedError} next */
+    useAuth(socket, next){
+        // User muss eingeloggt sein
+        if(!socket.request.session.user) return next(new Error("Nicht Eingeloggt!"));
+
+        // Der User darf nur eine verbindung gleichzeitig haben
+        const userId = socket.request.session.user.id;
+        const socketConnections = this.io.sockets.sockets;
+        socketConnections.forEach((socket) => {
+            if(socket.request.session.user.id === userId) return next(new Error("Irgendwer anders spielt schon!"));
+        });
+
+        next();
+    }
+
+    /** @param {socketIO.Socket} socket - The socket instance. */
+    sendToRightManager(socket){
+        socket.on("requestIdentification", () => {
+            socket.emit("identification", socket.request.session.user);
+        });
+
+        socket.on("hereForLobby", () => {
+            new ClientHandler(socket, this.lobbyManager);
+        });
+    }
+}
+
+module.exports = SocketIOManager;