Handle authenticated room instance takeover

app/Services/Rooms/RoomPlayerInstanceService.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace App\Services\Rooms;
+
+use Illuminate\Http\Request;
+use Illuminate\Support\Str;
+
+class RoomPlayerInstanceService
+{
+    private const string SESSION_KEY = 'room_player_instance_id';
+
+    public function for(Request $request): string
+    {
+        $instanceId = $request->session()->get(self::SESSION_KEY);
+
+        if (is_string($instanceId) && Str::isUuid($instanceId)) {
+            return $instanceId;
+        }
+
+        $instanceId = (string) Str::uuid();
+        $request->session()->put(self::SESSION_KEY, $instanceId);
+
+        return $instanceId;
+    }
+}