chg: dev: replace the legacy gos/web-socket-bundle & replace it with Mercure protocol #4

src/Controller/GameController.php

@@ -12,7 +12,6 @@ namespace App\Controller;
 
 use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
 use Symfony\Component\DependencyInjection\Attribute\Autowire;
-use Symfony\Component\HttpFoundation\RequestStack;
 use Symfony\Component\HttpFoundation\Response;
 
 /**
@@ -29,8 +28,11 @@ class GameController extends AbstractController
 {
     public function __construct(
         #[Autowire(env: 'APP_ENV')]
-        private readonly string       $env,
-        private readonly RequestStack $request,
+        private readonly string $env,
+        #[Autowire(env: 'MERCURE_PUBLIC_URL')]
+        private readonly string $mercurePublicUrl,
+        #[Autowire(env: 'MERCURE_SUBSCRIBER_JWT')]
+        private readonly string $mercureSubscriberJwt,
     ) {
     }
 
@@ -42,8 +44,9 @@ class GameController extends AbstractController
     public function play(): Response
     {
         return $this->render('Game/play.html.twig', [
-            'env' => $this->env,
-            'ssl' => $this->request->getCurrentRequest()->isSecure() ? 'true' : 'false',
+            'env'                    => $this->env,
+            'mercure_hub_url'        => $this->mercurePublicUrl,
+            'mercure_subscriber_jwt' => $this->mercureSubscriberJwt,
         ]);
     }
 

src/Controller/MercureController.php

@@ -0,0 +1,98 @@
+<?php declare(strict_types=1);
+/**
+ * This file is part of the SplendidBear Websites' projects.
+ *
+ * Copyright (c) 2019 @ www.splendidbear.org
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace App\Controller;
+
+use App\Util\RpcManager;
+use App\Util\TopicManager;
+use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\HttpFoundation\JsonResponse;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Response;
+
+/**
+ * Class MercureController
+ *
+ * Handles HTTP API endpoints that replace the former WebSocket RPC and Topic handlers.
+ * Client → Server communication is via HTTP POST/GET.
+ * Server → Client broadcasting is via Mercure (SSE).
+ *
+ * @package  App\Controller
+ * @author   Lang <https://www.splendidbear.org>
+ * @category Class
+ * @license  https://www.gnu.org/licenses/lgpl-3.0.en.html GNU Lesser General Public License
+ * @link     www.splendidbear.org
+ * @since    2026. 04. 09.
+ */
+class MercureController extends AbstractController
+{
+    public function __construct(
+        private readonly TopicManager $topicManager,
+        private readonly RpcManager   $rpcManager,
+    ) {
+    }
+
+    /** POST /api/game/start — save the grid and create the PlayedGame record */
+    public function start(Request $request): JsonResponse
+    {
+        $data = $request->toArray();
+        $result = $this->rpcManager->saveGrid([$data['grid'], $data['gameAssoc']]);
+
+        return $this->json(['success' => $result]);
+    }
+
+    /** GET /api/game/connect/{gameAssoc} — return grid + current user info (base64 JSON) */
+    public function connect(string $gameAssoc): Response
+    {
+        $payload = $this->rpcManager->getConnectInformation($gameAssoc);
+
+        return new Response($payload, Response::HTTP_OK, ['Content-Type' => 'text/plain']);
+    }
+
+    /** POST /api/game/join/{gameAssoc} — register the player, broadcast subscription event via Mercure */
+    public function join(string $gameAssoc, Request $request): JsonResponse
+    {
+        $this->topicManager->subscribe($gameAssoc, $this->resolveUserName($request), $this->getUser());
+
+        return $this->json(['success' => true]);
+    }
+
+    /** POST /api/game/step/{gameAssoc} — persist the step and broadcast game event via Mercure */
+    public function step(string $gameAssoc, Request $request): JsonResponse
+    {
+        $this->topicManager->publish($gameAssoc, $this->resolveUserName($request), $request->toArray());
+
+        return $this->json(['success' => true]);
+    }
+
+    /** POST /api/game/leave/{gameAssoc} — broadcast disconnect event via Mercure */
+    public function leave(string $gameAssoc, Request $request): JsonResponse
+    {
+        $this->topicManager->unSubscribe($gameAssoc, $this->resolveUserName($request));
+
+        return $this->json(['success' => true]);
+    }
+
+    private function resolveUserName(Request $request): string
+    {
+        $user = $this->getUser();
+
+        if (null !== $user) {
+            return $user->getUserIdentifier();
+        }
+
+        $sessionId = $request->getSession()->getId();
+        if (empty($sessionId)) {
+            $sessionId = bin2hex(random_bytes(16));
+        }
+
+        return 'anon_' . $sessionId;
+    }
+}