<?php

namespace App\Tests;

use App\Entity\Goal;
use App\Entity\Invite;
use App\Entity\User;
use Doctrine\ORM\EntityManagerInterface;
use Symfony\Bundle\FrameworkBundle\KernelBrowser;
use Symfony\Bundle\FrameworkBundle\Test\WebTestCase;
use Symfony\Component\PasswordHasher\Hasher\UserPasswordHasherInterface;

class AppIntegrationTest extends WebTestCase
{
    private EntityManagerInterface $em;
    private KernelBrowser $client;

    protected function setUp(): void
    {
        parent::setUp();
        $this->client = static::createClient();
        $this->em = static::getContainer()->get(EntityManagerInterface::class);
        $this->cleanup();
    }

    protected function tearDown(): void
    {
        $this->cleanup();
        parent::tearDown();
    }

    private function cleanup(): void
    {
        $conn = $this->em->getConnection();
        $conn->executeStatement("DELETE FROM goals WHERE user_id IN (SELECT id FROM users WHERE email LIKE '%@test.dudi')");
        $conn->executeStatement("DELETE FROM invites WHERE created_by IN (SELECT id FROM users WHERE email LIKE '%@test.dudi')");
        $conn->executeStatement("DELETE FROM users_resets WHERE user IN (SELECT id FROM users WHERE email LIKE '%@test.dudi')");
        $conn->executeStatement("DELETE FROM users WHERE email LIKE '%@test.dudi'");
        $this->em->clear();
    }

    private function createUser(string $suffix = 'main', string $password = 'test1234'): User
    {
        $hasher = static::getContainer()->get(UserPasswordHasherInterface::class);
        $user = new User();
        $user->setEmail($suffix . '@test.dudi')
             ->setUsername('Tester ' . $suffix)
             ->setVerified(true);
        $user->setPassword($hasher->hashPassword($user, $password));
        $this->em->persist($user);
        $this->em->flush();
        return $user;
    }

    private function authClient(User $user): KernelBrowser
    {
        $this->client->loginUser($user);
        return $this->client;
    }

    private function json(KernelBrowser $client, string $method, string $url, array $body = []): array
    {
        $client->request($method, $url, [], [], ['CONTENT_TYPE' => 'application/json'], $body ? json_encode($body) : null);
        return json_decode($client->getResponse()->getContent(), true) ?? [];
    }

    // ── Auth ─────────────────────────────────────────────────────────────────

    public function testLoginSuccess(): void
    {
        $this->createUser('login', 'geheim99');
        $data = $this->json($this->client, 'POST', '/api/login', ['email' => 'login@test.dudi', 'password' => 'geheim99']);

        $this->assertTrue($data['ok']);
        $this->assertSame('login@test.dudi', $data['email']);
        $this->assertSame('Tester login', $data['name']);
    }

    public function testLoginWrongPassword(): void
    {
        $this->createUser('login2');
        $data = $this->json($this->client, 'POST', '/api/login', ['email' => 'login2@test.dudi', 'password' => 'falsch']);

        $this->assertArrayHasKey('error', $data);
        $this->assertSame(401, $this->client->getResponse()->getStatusCode());
    }

    public function testLoginUnknownEmail(): void
    {
        $data = $this->json($this->client, 'POST', '/api/login', ['email' => 'nobody@test.dudi', 'password' => 'test1234']);

        $this->assertArrayHasKey('error', $data);
        $this->assertSame(401, $this->client->getResponse()->getStatusCode());
    }

    public function testMe(): void
    {
        $user = $this->createUser('me');
        $client = $this->authClient($user);
        $data = $this->json($client, 'GET', '/api/me');

        $this->assertTrue($data['ok']);
        $this->assertSame('me@test.dudi', $data['email']);
        $this->assertSame('Tester me', $data['name']);
        $this->assertIsInt($data['id']);
    }

    public function testMeUnauthenticated(): void
    {
        $this->json($this->client, 'GET', '/api/me');
        $this->assertSame(401, $this->client->getResponse()->getStatusCode());
    }

    public function testUpdateName(): void
    {
        $user = $this->createUser('name');
        $client = $this->authClient($user);
        $data = $this->json($client, 'PATCH', '/api/me', ['name' => 'Neuer Name']);

        $this->assertTrue($data['ok']);
        $this->assertSame('Neuer Name', $data['name']);

        $this->em->refresh($user);
        $this->assertSame('Neuer Name', $user->getUsername());
    }

    public function testUpdateNameEmpty(): void
    {
        $user = $this->createUser('nameempty');
        $client = $this->authClient($user);
        $data = $this->json($client, 'PATCH', '/api/me', ['name' => '']);

        $this->assertArrayHasKey('error', $data);
        $this->assertSame(400, $this->client->getResponse()->getStatusCode());
    }

    public function testChangePassword(): void
    {
        $user = $this->createUser('pw', 'altesPasswort1');
        $client = $this->authClient($user);
        $data = $this->json($client, 'POST', '/api/change-password', [
            'old_password' => 'altesPasswort1',
            'new_password' => 'neuesPasswort1',
        ]);

        $this->assertTrue($data['ok']);

        // verify new password works
        $hasher = static::getContainer()->get(UserPasswordHasherInterface::class);
        $this->em->refresh($user);
        $this->assertTrue($hasher->isPasswordValid($user, 'neuesPasswort1'));
    }

    public function testChangePasswordWrongOld(): void
    {
        $user = $this->createUser('pwwrong');
        $client = $this->authClient($user);
        $data = $this->json($client, 'POST', '/api/change-password', [
            'old_password' => 'falsch1234',
            'new_password' => 'neuesPasswort1',
        ]);

        $this->assertArrayHasKey('error', $data);
        $this->assertSame(401, $this->client->getResponse()->getStatusCode());
    }

    public function testChangePasswordTooShort(): void
    {
        $user = $this->createUser('pwshort');
        $client = $this->authClient($user);
        $data = $this->json($client, 'POST', '/api/change-password', [
            'old_password' => 'test1234',
            'new_password' => 'kurz',
        ]);

        $this->assertArrayHasKey('error', $data);
        $this->assertSame(400, $this->client->getResponse()->getStatusCode());
    }

    // ── Password reset ────────────────────────────────────────────────────────

    public function testResetRequestAlwaysReturnsOk(): void
    {
        // unknown email — still returns ok (don't leak existence)
        $data = $this->json($this->client, 'POST', '/api/reset-request', ['email' => 'ghost@test.dudi']);
        $this->assertTrue($data['ok']);
    }

    public function testResetRequestWritesToken(): void
    {
        $user = $this->createUser('reset');
        $this->json($this->client, 'POST', '/api/reset-request', ['email' => 'reset@test.dudi']);

        $row = $this->em->getConnection()->fetchAssociative(
            'SELECT * FROM users_resets WHERE user = ?',
            [$user->getId()]
        );
        $this->assertNotFalse($row);
        $this->assertGreaterThan(time(), $row['expires']);
    }

    public function testResetPassword(): void
    {
        $user = $this->createUser('resetpw');

        $selector = bin2hex(random_bytes(12));
        $token    = bin2hex(random_bytes(32));
        $hash     = password_hash($token, PASSWORD_BCRYPT);
        $this->em->getConnection()->executeStatement(
            'INSERT INTO users_resets (user, selector, token, expires) VALUES (?, ?, ?, ?)',
            [$user->getId(), $selector, $hash, time() + 3600]
        );

        $data = $this->json($this->client, 'POST', '/api/reset-password', [
            'selector' => $selector,
            'token'    => $token,
            'password' => 'neuesPasswort99',
        ]);

        $this->assertTrue($data['ok']);

        $hasher = static::getContainer()->get(UserPasswordHasherInterface::class);
        $this->em->refresh($user);
        $this->assertTrue($hasher->isPasswordValid($user, 'neuesPasswort99'));

        // token must be deleted after use
        $row = $this->em->getConnection()->fetchAssociative(
            'SELECT * FROM users_resets WHERE selector = ?', [$selector]
        );
        $this->assertFalse($row);
    }

    public function testResetPasswordExpiredToken(): void
    {
        $user = $this->createUser('resetexp');
        $selector = bin2hex(random_bytes(12));
        $token    = bin2hex(random_bytes(32));
        $this->em->getConnection()->executeStatement(
            'INSERT INTO users_resets (user, selector, token, expires) VALUES (?, ?, ?, ?)',
            [$user->getId(), $selector, password_hash($token, PASSWORD_BCRYPT), time() - 1]
        );

        $data = $this->json($this->client, 'POST', '/api/reset-password', [
            'selector' => $selector,
            'token'    => $token,
            'password' => 'neuesPasswort99',
        ]);

        $this->assertArrayHasKey('error', $data);
        $this->assertSame(400, $this->client->getResponse()->getStatusCode());
    }

    // ── Goals ─────────────────────────────────────────────────────────────────

    public function testGoalListEmpty(): void
    {
        $user = $this->createUser('goallist');
        $client = $this->authClient($user);
        $data = $this->json($client, 'GET', '/api/goals');

        $this->assertSame([], $data);
    }

    public function testGoalCreate(): void
    {
        $user = $this->createUser('goalcreate');
        $client = $this->authClient($user);
        $data = $this->json($client, 'POST', '/api/goals', [
            'name'  => 'Liegestütz',
            'unit'  => 'Stück',
            'daily' => 50,
            'days'  => 30,
        ]);

        $this->assertSame('Liegestütz', $data['name']);
        $this->assertSame('Stück', $data['unit']);
        $this->assertEquals(50.0, $data['daily']);
        $this->assertSame(30, $data['days']);
        $this->assertSame([], $data['sets']);
        $this->assertIsString($data['id']);
    }

    public function testGoalCreateMissingName(): void
    {
        $user = $this->createUser('goalnoname');
        $client = $this->authClient($user);
        $data = $this->json($client, 'POST', '/api/goals', ['unit' => 'Stück', 'daily' => 10, 'days' => 7]);

        $this->assertArrayHasKey('error', $data);
        $this->assertSame(400, $this->client->getResponse()->getStatusCode());
    }

    public function testGoalDefaultUnit(): void
    {
        $user = $this->createUser('goalunit');
        $client = $this->authClient($user);
        $data = $this->json($client, 'POST', '/api/goals', ['name' => 'Plank', 'daily' => 1, 'days' => 7]);

        $this->assertSame('Stück', $data['unit']);
    }

    public function testGoalListReturnsOwned(): void
    {
        $user  = $this->createUser('goalowned');
        $other = $this->createUser('goalother');

        foreach ([$user, $other] as $u) {
            $goal = new Goal();
            $goal->setUserId($u->getId())->setName('Ziel')->setUnit('Stück')->setDaily(1)->setDays(7)->setStart(new \DateTime())->setSets([]);
            $this->em->persist($goal);
        }
        $this->em->flush();

        $client = $this->authClient($user);
        $data = $this->json($client, 'GET', '/api/goals');

        $this->assertCount(1, $data);
        $this->assertSame('Ziel', $data[0]['name']);
    }

    public function testGoalUpdate(): void
    {
        $user = $this->createUser('goalupdate');
        $goal = new Goal();
        $goal->setUserId($user->getId())->setName('Alt')->setUnit('Stück')->setDaily(10)->setDays(7)->setStart(new \DateTime())->setSets([]);
        $this->em->persist($goal);
        $this->em->flush();

        $client = $this->authClient($user);
        $data = $this->json($client, 'PATCH', '/api/goals/' . $goal->getId(), [
            'name'  => 'Neu',
            'unit'  => 'Min',
            'daily' => 20,
        ]);

        $this->assertTrue($data['ok']);
        $this->em->refresh($goal);
        $this->assertSame('Neu', $goal->getName());
        $this->assertSame('Min', $goal->getUnit());
        $this->assertSame(20.0, $goal->getDaily());
    }

    public function testGoalUpdateSets(): void
    {
        $user = $this->createUser('goalsets');
        $goal = new Goal();
        $goal->setUserId($user->getId())->setName('Test')->setUnit('Stück')->setDaily(50)->setDays(7)->setStart(new \DateTime())->setSets([]);
        $this->em->persist($goal);
        $this->em->flush();

        $today = date('Y-m-d');
        $client = $this->authClient($user);
        $data = $this->json($client, 'PATCH', '/api/goals/' . $goal->getId(), [
            'sets' => [$today => [20, 30]],
        ]);

        $this->assertTrue($data['ok']);
        $this->em->refresh($goal);
        $this->assertSame([20, 30], $goal->getSets()[$today]);
    }

    public function testGoalUpdateNotFound(): void
    {
        $user = $this->createUser('goalnotfound');
        $client = $this->authClient($user);
        $data = $this->json($client, 'PATCH', '/api/goals/999999', ['name' => 'X']);

        $this->assertArrayHasKey('error', $data);
        $this->assertSame(404, $client->getResponse()->getStatusCode());
    }

    public function testGoalUpdateOwnership(): void
    {
        $owner = $this->createUser('goalown1');
        $other = $this->createUser('goalown2');

        $goal = new Goal();
        $goal->setUserId($owner->getId())->setName('Privat')->setUnit('Stück')->setDaily(1)->setDays(7)->setStart(new \DateTime())->setSets([]);
        $this->em->persist($goal);
        $this->em->flush();

        $client = $this->authClient($other);
        $data = $this->json($client, 'PATCH', '/api/goals/' . $goal->getId(), ['name' => 'Gehackt']);

        $this->assertSame(404, $client->getResponse()->getStatusCode());
        $this->em->refresh($goal);
        $this->assertSame('Privat', $goal->getName());
    }

    public function testGoalDelete(): void
    {
        $user = $this->createUser('goaldel');
        $goal = new Goal();
        $goal->setUserId($user->getId())->setName('Weg')->setUnit('Stück')->setDaily(1)->setDays(7)->setStart(new \DateTime())->setSets([]);
        $this->em->persist($goal);
        $this->em->flush();
        $id = $goal->getId();

        $client = $this->authClient($user);
        $data = $this->json($client, 'DELETE', '/api/goals/' . $id);

        $this->assertTrue($data['ok']);
        $this->assertNull($this->em->find(Goal::class, $id));
    }

    public function testGoalDeleteOwnership(): void
    {
        $owner = $this->createUser('goaldel1');
        $other = $this->createUser('goaldel2');

        $goal = new Goal();
        $goal->setUserId($owner->getId())->setName('Privat')->setUnit('Stück')->setDaily(1)->setDays(7)->setStart(new \DateTime())->setSets([]);
        $this->em->persist($goal);
        $this->em->flush();
        $id = $goal->getId();

        $client = $this->authClient($other);
        $this->json($client, 'DELETE', '/api/goals/' . $id);

        $this->assertNotNull($this->em->find(Goal::class, $id));
    }

    public function testGoalUnauthenticated(): void
    {
        $this->json($this->client, 'GET', '/api/goals');
        $this->assertSame(401, $this->client->getResponse()->getStatusCode());
    }

    // ── Invites ───────────────────────────────────────────────────────────────

    public function testInviteCreate(): void
    {
        $user = $this->createUser('invcreate');
        $client = $this->authClient($user);
        $data = $this->json($client, 'POST', '/api/invite', ['note' => 'Für Max']);

        $this->assertStringContainsString('invite=', $data['url']);
    }

    public function testInviteList(): void
    {
        $user = $this->createUser('invlist');

        $invite = new Invite();
        $invite->setToken(bin2hex(random_bytes(32)))
               ->setNote('Testeinladung')
               ->setCreatedBy($user->getId())
               ->setExpiresAt(new \DateTimeImmutable('+7 days'));
        $this->em->persist($invite);
        $this->em->flush();

        $client = $this->authClient($user);
        $data = $this->json($client, 'GET', '/api/invites');

        $this->assertCount(1, $data);
        $this->assertSame('pending', $data[0]['status']);
        $this->assertSame('Testeinladung', $data[0]['note']);
        $this->assertStringContainsString('invite=', $data[0]['url']);
    }

    public function testInviteListExpired(): void
    {
        $user = $this->createUser('invexp');

        $invite = new Invite();
        $invite->setToken(bin2hex(random_bytes(32)))
               ->setCreatedBy($user->getId())
               ->setExpiresAt(new \DateTimeImmutable('-1 day'));
        $this->em->persist($invite);
        $this->em->flush();

        $client = $this->authClient($user);
        $data = $this->json($client, 'GET', '/api/invites');

        $this->assertSame('expired', $data[0]['status']);
        $this->assertNull($data[0]['url']);
    }

    public function testInviteListUsed(): void
    {
        $user     = $this->createUser('invused1');
        $newUser  = $this->createUser('invused2');

        $invite = new Invite();
        $invite->setToken(bin2hex(random_bytes(32)))
               ->setCreatedBy($user->getId())
               ->setExpiresAt(new \DateTimeImmutable('+7 days'))
               ->setUsedBy($newUser->getId())
               ->setUsedAt(new \DateTimeImmutable());
        $this->em->persist($invite);
        $this->em->flush();

        $client = $this->authClient($user);
        $data = $this->json($client, 'GET', '/api/invites');

        $this->assertSame('used', $data[0]['status']);
        $this->assertSame('invused2@test.dudi', $data[0]['used_by_email']);
        $this->assertNull($data[0]['url']);
    }

    // ── Register ──────────────────────────────────────────────────────────────

    public function testRegisterWithInvite(): void
    {
        $creator = $this->createUser('reginviter');

        $invite = new Invite();
        $invite->setToken(bin2hex(random_bytes(32)))
               ->setCreatedBy($creator->getId())
               ->setExpiresAt(new \DateTimeImmutable('+7 days'));
        $this->em->persist($invite);
        $this->em->flush();

        $data = $this->json($this->client, 'POST', '/api/register', [
            'email'    => 'regnew@test.dudi',
            'password' => 'passwort99',
            'name'     => 'Neuer User',
            'token'    => $invite->getToken(),
        ]);

        $this->assertTrue($data['ok']);
        $this->assertSame('regnew@test.dudi', $data['email']);

        $newUser = static::getContainer()->get(\App\Repository\UserRepository::class)->findOneBy(['email' => 'regnew@test.dudi']);
        $this->assertNotNull($newUser);
        $this->assertTrue($newUser->isVerified());

        $this->em->refresh($invite);
        $this->assertSame($newUser->getId(), $invite->getUsedBy());
        $this->assertNotNull($invite->getUsedAt());
    }

    public function testRegisterInvalidToken(): void
    {
        $data = $this->json($this->client, 'POST', '/api/register', [
            'email'    => 'regbad@test.dudi',
            'password' => 'passwort99',
            'token'    => 'ungueltig',
        ]);

        $this->assertArrayHasKey('error', $data);
        $this->assertSame(400, $this->client->getResponse()->getStatusCode());
    }

    public function testRegisterDuplicateEmail(): void
    {
        $existing = $this->createUser('regdup');

        $creator = $this->createUser('regdupinviter');
        $invite = new Invite();
        $invite->setToken(bin2hex(random_bytes(32)))
               ->setCreatedBy($creator->getId())
               ->setExpiresAt(new \DateTimeImmutable('+7 days'));
        $this->em->persist($invite);
        $this->em->flush();

        $data = $this->json($this->client, 'POST', '/api/register', [
            'email'    => 'regdup@test.dudi',
            'password' => 'passwort99',
            'token'    => $invite->getToken(),
        ]);

        $this->assertArrayHasKey('error', $data);
        $this->assertSame(409, $this->client->getResponse()->getStatusCode());
    }

    public function testRegisterPasswordTooShort(): void
    {
        $creator = $this->createUser('regshortinviter');
        $invite = new Invite();
        $invite->setToken(bin2hex(random_bytes(32)))
               ->setCreatedBy($creator->getId())
               ->setExpiresAt(new \DateTimeImmutable('+7 days'));
        $this->em->persist($invite);
        $this->em->flush();

        $data = $this->json($this->client, 'POST', '/api/register', [
            'email'    => 'regshort@test.dudi',
            'password' => 'kurz',
            'token'    => $invite->getToken(),
        ]);

        $this->assertArrayHasKey('error', $data);
        $this->assertSame(400, $this->client->getResponse()->getStatusCode());
    }

    public function testRegisterAutoLogsIn(): void
    {
        $creator = $this->createUser('regautologin');
        $invite  = new Invite();
        $invite->setToken(bin2hex(random_bytes(32)))
               ->setCreatedBy($creator->getId())
               ->setExpiresAt(new \DateTimeImmutable('+7 days'));
        $this->em->persist($invite);
        $this->em->flush();

        $this->json($this->client, 'POST', '/api/register', [
            'email'    => 'regauto@test.dudi',
            'password' => 'passwort99',
            'name'     => 'Auto User',
            'token'    => $invite->getToken(),
        ]);

        $me = $this->json($this->client, 'GET', '/api/me');
        $this->assertTrue($me['ok']);
        $this->assertSame('regauto@test.dudi', $me['email']);
    }

    public function testRegisterUsedTokenRejected(): void
    {
        $creator  = $this->createUser('regusedtkinviter');
        $existing = $this->createUser('regusedtkuser');

        $invite = new Invite();
        $invite->setToken(bin2hex(random_bytes(32)))
               ->setCreatedBy($creator->getId())
               ->setExpiresAt(new \DateTimeImmutable('+7 days'))
               ->setUsedBy($existing->getId())
               ->setUsedAt(new \DateTimeImmutable());
        $this->em->persist($invite);
        $this->em->flush();

        $data = $this->json($this->client, 'POST', '/api/register', [
            'email'    => 'regusedtk@test.dudi',
            'password' => 'passwort99',
            'token'    => $invite->getToken(),
        ]);

        $this->assertArrayHasKey('error', $data);
        $this->assertSame(400, $this->client->getResponse()->getStatusCode());
    }

    // ── Locale ────────────────────────────────────────────────────────────────

    public function testUpdateLocale(): void
    {
        $user   = $this->createUser('locale');
        $client = $this->authClient($user);

        foreach (['en', 'pl', 'de'] as $locale) {
            $data = $this->json($client, 'PATCH', '/api/me', ['locale' => $locale]);
            $this->assertTrue($data['ok'], "ok missing for locale $locale");
            $this->assertSame($locale, $data['locale']);
        }

        $this->em->clear();
        $user = $this->em->find(User::class, $user->getId());
        $this->assertSame('de', $user->getLocale());
    }

    public function testUpdateLocaleInvalid(): void
    {
        $user   = $this->createUser('localeinvalid');
        $client = $this->authClient($user);
        $data   = $this->json($client, 'PATCH', '/api/me', ['locale' => 'fr']);

        $this->assertArrayHasKey('error', $data);
        $this->assertSame(400, $this->client->getResponse()->getStatusCode());
    }

    // ── Logout ────────────────────────────────────────────────────────────────

    public function testLogout(): void
    {
        $user   = $this->createUser('logout');
        $client = $this->authClient($user);

        $me = $this->json($client, 'GET', '/api/me');
        $this->assertTrue($me['ok']);

        $this->json($client, 'POST', '/api/logout');

        $this->json($client, 'GET', '/api/me');
        $this->assertSame(401, $client->getResponse()->getStatusCode());
    }

    // ── Name validation ───────────────────────────────────────────────────────

    public function testUpdateNameWhitespaceOnlyIsRejected(): void
    {
        $user   = $this->createUser('namewhitespace');
        $client = $this->authClient($user);
        $data   = $this->json($client, 'PATCH', '/api/me', ['name' => '   ']);

        $this->assertArrayHasKey('error', $data);
        $this->assertSame(400, $this->client->getResponse()->getStatusCode());
    }

    // ── Password reset (additional) ────────────────────────────────────────────

    public function testResetPasswordWrongToken(): void
    {
        $user     = $this->createUser('resetwrongtk');
        $selector = bin2hex(random_bytes(12));
        $token    = bin2hex(random_bytes(32));
        $this->em->getConnection()->executeStatement(
            'INSERT INTO users_resets (user, selector, token, expires) VALUES (?, ?, ?, ?)',
            [$user->getId(), $selector, password_hash($token, PASSWORD_BCRYPT), time() + 3600]
        );

        $data = $this->json($this->client, 'POST', '/api/reset-password', [
            'selector' => $selector,
            'token'    => 'falschertoken123',
            'password' => 'neuesPasswort99',
        ]);

        $this->assertArrayHasKey('error', $data);
        $this->assertSame(400, $this->client->getResponse()->getStatusCode());
    }

    // ── Invites (additional) ───────────────────────────────────────────────────

    public function testInviteCreateWithoutNote(): void
    {
        $user   = $this->createUser('invnonote');
        $client = $this->authClient($user);
        $data   = $this->json($client, 'POST', '/api/invite', []);

        $this->assertArrayHasKey('url', $data);
        $this->assertStringContainsString('invite=', $data['url']);

        $invites = $this->em->getRepository(Invite::class)->findBy(['createdBy' => $user->getId()]);
        $this->assertCount(1, $invites);
        $this->assertNull($invites[0]->getNote());
    }

    public function testInviteListIsolatedFromOtherUsers(): void
    {
        $user1 = $this->createUser('inviso1');
        $user2 = $this->createUser('inviso2');

        $invite = new Invite();
        $invite->setToken(bin2hex(random_bytes(32)))
               ->setCreatedBy($user1->getId())
               ->setExpiresAt(new \DateTimeImmutable('+7 days'));
        $this->em->persist($invite);
        $this->em->flush();

        $client = $this->authClient($user2);
        $data   = $this->json($client, 'GET', '/api/invites');

        $this->assertSame([], $data);
    }

    // ── Goals (additional) ─────────────────────────────────────────────────────

    public function testGoalPartialUpdateOnlyName(): void
    {
        $user = $this->createUser('goalpartial');
        $goal = new Goal();
        $goal->setUserId($user->getId())->setName('Alt')->setUnit('Min')->setDaily(10.0)->setDays(7)->setStart(new \DateTime())->setSets([]);
        $this->em->persist($goal);
        $this->em->flush();

        $client = $this->authClient($user);
        $data   = $this->json($client, 'PATCH', '/api/goals/' . $goal->getId(), ['name' => 'Neu']);

        $this->assertTrue($data['ok']);
        $this->em->refresh($goal);
        $this->assertSame('Neu', $goal->getName());
        $this->assertSame('Min', $goal->getUnit());
        $this->assertSame(10.0, $goal->getDaily());
    }

    public function testGoalCreateEmptyUnitFallsBackToDefault(): void
    {
        $user   = $this->createUser('goalemptyunit');
        $client = $this->authClient($user);
        $data   = $this->json($client, 'POST', '/api/goals', [
            'name'  => 'Plank',
            'unit'  => '',
            'daily' => 1,
            'days'  => 7,
        ]);

        $this->assertSame('Stück', $data['unit']);
    }

    // ── Admin ─────────────────────────────────────────────────────────────────

    public function testAdminUsersUnauthenticated(): void
    {
        $this->json($this->client, 'GET', '/api/admin/users');
        $this->assertSame(401, $this->client->getResponse()->getStatusCode());
    }

    public function testAdminUsersNonAdminForbidden(): void
    {
        $user   = $this->createUser('adminblocked');
        $client = $this->authClient($user);
        $data   = $this->json($client, 'GET', '/api/admin/users');

        $this->assertArrayHasKey('error', $data);
        $this->assertSame(403, $client->getResponse()->getStatusCode());
    }

    public function testAdminUsersReturnsAllUsers(): void
    {
        $adminEmail = $_ENV['ADMIN_EMAIL'] ?? '';
        if (!$adminEmail) {
            $this->markTestSkipped('ADMIN_EMAIL not configured');
        }

        $admin = $this->em->getRepository(User::class)->findOneBy(['email' => $adminEmail]);
        if (!$admin) {
            $this->markTestSkipped("Admin user $adminEmail not found in DB");
        }

        $this->createUser('adminlistother');

        $client = $this->authClient($admin);
        $data   = $this->json($client, 'GET', '/api/admin/users');

        $this->assertSame(200, $client->getResponse()->getStatusCode());
        $this->assertIsArray($data);
        $emails = array_column($data, 'email');
        $this->assertContains($adminEmail, $emails);
        $this->assertContains('adminlistother@test.dudi', $emails);
        foreach ($data as $row) {
            $this->assertArrayHasKey('email', $row);
            $this->assertArrayHasKey('username', $row);
            $this->assertArrayHasKey('registered', $row);
        }
    }

    public function testGoalDeleteReturnsOkForNonExistentGoal(): void
    {
        $user   = $this->createUser('goaldelmissing');
        $client = $this->authClient($user);
        $data   = $this->json($client, 'DELETE', '/api/goals/999999');

        $this->assertTrue($data['ok']);
        $this->assertSame(200, $client->getResponse()->getStatusCode());
    }
}