Some settings

src/Game/Controller/GameApiController.php

@@ -0,0 +1,49 @@
+<?php
+declare(strict_types=1);
+
+namespace App\Game\Controller;
+
+use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\HttpFoundation\JsonResponse;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\Routing\Annotation\Route;
+
+#[Route('/game/api', name: 'game_api_')]
+final class GameApiController extends AbstractController
+{
+    #[Route('/ping', name: 'ping', methods: ['GET'])]
+    public function ping(): JsonResponse
+    {
+        return $this->json([
+            'ok' => true,
+            'service' => 'game-api',
+            'ts' => date('c'),
+        ]);
+    }
+
+    #[Route('/echo', name: 'echo', methods: ['POST'])]
+    public function echo(Request $request): JsonResponse
+    {
+        $raw = (string) $request->getContent();
+        $data = null;
+        if ($raw !== '') {
+            try {
+                /** @var array<string,mixed>|null $decoded */
+                $decoded = json_decode($raw, true, 512, JSON_THROW_ON_ERROR);
+                $data = $decoded;
+            } catch (\Throwable $e) {
+                return $this->json([
+                    'ok' => false,
+                    'error' => 'Invalid JSON: ' . $e->getMessage(),
+                ], Response::HTTP_BAD_REQUEST);
+            }
+        }
+
+        return $this->json([
+            'ok' => true,
+            'received' => $data,
+            'ts' => date('c'),
+        ]);
+    }
+}