discord oauth2 symfony

DiscordAuthenticatorService.php

final class DiscordAuthenticatorService extends OAuth2Authenticator implements AuthenticationEntryPointInterface
{
    public function __construct(
        private readonly ClientRegistry $clientRegistry,
        private readonly EntityManagerInterface $em,
        private readonly RouterInterface $router,
        private readonly UserRepositoryInterface $userRepository
    ) {}

    public function start(Request $request, AuthenticationException $authException = null): RedirectResponse
    {
        return new RedirectResponse($this->router->generate("auth_discord_start"), Response::HTTP_TEMPORARY_REDIRECT);
    }

    public function supports(Request $request): ?bool
    {
        return $request->attributes->get("_route") === "auth_discord_login";
    }

    public function authenticate(Request $request): SelfValidatingPassport
    {
        $client = $this->clientRegistry->getClient("discord");
        $accessToken = $this->fetchAccessToken($client);

        return new SelfValidatingPassport(
            new UserBadge($accessToken->getToken(), function () use ($accessToken, $client) {
                /** @var DiscordResourceOwner $discordUser */
                $discordUser = $client->fetchUserFromToken($accessToken);

                $user = $this->userRepository->findOneBy(["discordId" => $discordUser->getId()]);

                if (null === $user) {
                    $user = new User($discordUser->getId());

                    $this->em->persist($user);
                }

                $this->em->flush();

                return $user;
            })
        );
    }

    public function onAuthenticationSuccess(Request $request, TokenInterface $token, string $firewallName): ?Response
    {
        return null;
    }

    public function onAuthenticationFailure(Request $request, AuthenticationException $exception): ?Response
    {
        return null;
    }


}

LoginController.php

#[AsController]
#[Route("/auth/discord", name: "auth_discord_")]
final class LoginController
{


    /**
     * @throws IdentityProviderException
     */
    #[Route("/login", name: "login")]
    public function login(#[MapQueryParameter] ?string $code, ClientRegistry $clientRegistry): JsonResponse
    {
        $token = $clientRegistry->getClient('discord')->getAccessToken([
            'code' => $code
        ])->getToken();

        $user = $clientRegistry->getClient('discord')->getOAuth2Provider()->getResourceOwner($token);
        return new JsonResponse(["ok" => $user]);
    }


    #[Route("/start", name: "start")]
    public function start(ClientRegistry $clientRegistry): RedirectResponse
    {
        return $clientRegistry->getClient("discord")->redirect(["identify"]);
    }


    /**
     * @throws \Exception
     */
    #[Route('/logout', name: 'app_logout')]
    public function logout()
    {
        throw new \Exception('Logging out');
    }


}