Untested login

src/Controller/SecurityController.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace App\Controller;
+
+use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\Routing\Attribute\Route;
+
+class SecurityController extends AbstractController
+{
+    #[Route('/login', name: 'app_login')]
+    public function index(): Response
+    {
+        return $this->json([
+            $this->getUser()?->getId() ?? null
+        ]);
+    }
+}