<?php

namespace App\Tests;

use App\Content\DemoContent;
use App\Content\DocumentValidator;
use App\Content\FormRepository;
use App\Content\MediaLibrary;
use App\Content\MenuRepository;
use App\Content\PageRepository;
use App\Content\PartialRepository;
use App\Content\PostRepository;
use App\Content\SiteSettings;
use App\Content\Theme;
use App\Domain\InvalidForm;
use App\Infrastructure\ConnectionFactory;
use App\Kernel;
use App\Security\UserProvider;
use Doctrine\DBAL\Connection;
use PHPUnit\Framework\Attributes\DataProvider;
use Symfony\Bundle\FrameworkBundle\KernelBrowser;
use Symfony\Bundle\FrameworkBundle\Test\WebTestCase;
use Symfony\Component\HttpFoundation\File\UploadedFile;

final class EditorSecurityTest extends WebTestCase
{
    private Connection $db;
    private string $path;
    private array $previous;

    protected static function getKernelClass(): string
    {
        return Kernel::class;
    }

    protected function setUp(): void
    {
        $this->path = tempnam(sys_get_temp_dir(), 'kant-auth-');
        $url = 'sqlite:///'.str_replace('\\', '/', $this->path);
        $this->previous = [$_SERVER, $_ENV];
        foreach (['APP_SECRET' => 'isolated-test-secret', 'DATABASE_URL' => $url, 'SITE_ORIGIN' => 'https://cms.test', 'MEDIA_DIRECTORY' => $this->path.'-media'] as $key => $value) {
            $_SERVER[$key] = $_ENV[$key] = $value;
        }
        $this->db = ConnectionFactory::create($url);
        TestSchema::build($this->db);
        $this->db->insert('website', ['id' => 'default', 'name' => 'Test', 'default_locale' => 'de', 'theme' => '{}']);
        $this->db->insert('page', ['id' => 'p1', 'slug' => 'home', 'path' => 'home', 'type' => 'page', 'locale' => 'de', 'website_id' => 'default', 'version' => 0, 'created_at' => gmdate('Y-m-d H:i:s')]);
        $pages = new PageRepository($this->db, new DocumentValidator(), new SiteSettings($this->db, new MediaLibrary($this->db, $this->path.'-media')));
        $revision = $pages->saveDraft('p1', DemoContent::pages()['home'], 0);
        $pages->publish('p1', $revision, 1);
        // The navigation is part of the header area, so the fixture needs one.
        $partials = new PartialRepository($this->db, new DocumentValidator());
        foreach (DemoContent::areas() as $kind => $area) {
            $partials->create($kind, 'default', $area['name'], $area['document']);
        }
        foreach (['admin' => 'ROLE_ADMIN', 'publisher' => 'ROLE_PUBLISHER', 'editor' => 'ROLE_EDITOR'] as $username => $role) {
            $this->db->insert('cms_user', ['id' => $username, 'username' => $username, 'password_hash' => password_hash('Fixture-only-password', PASSWORD_BCRYPT, ['cost' => 4]), 'roles' => json_encode([$role])]);
        }
    }

    protected function tearDown(): void
    {
        parent::tearDown();
        $this->db->close();
        gc_collect_cycles();
        unlink($this->path);
        foreach (glob($this->path.'-media/*') ?: [] as $file) {
            unlink($file);
        }
        if (is_dir($this->path.'-media')) {
            rmdir($this->path.'-media');
        }
        [$_SERVER, $_ENV] = $this->previous;
    }

    /** Ein Client je Test (der Kernel startet nur einmal); ein zweiter Benutzer meldet sich im selben an. */
    private function login(string $username = 'admin', ?KernelBrowser $client = null): KernelBrowser
    {
        $client ??= self::createClient();
        $client->getCookieJar()->clear();
        $crawler = $client->request('GET', '/admin/login');
        $client->submit($crawler->selectButton('Anmelden')->form(['_username' => $username, '_password' => 'Fixture-only-password']));
        self::assertResponseRedirects('/admin');
        $client->followRedirect();
        self::assertResponseIsSuccessful();

        return $client;
    }

    public function testTheSessionCookieFollowsARenamedAdministration(): void
    {
        // Heisst die Verwaltung nicht mehr /admin, muss das Sitzungscookie auf ihren Pfad lauten -
        // sonst schickt der Browser es nie mit, und jede Anmeldung landet wieder vor der Tuer.
        $_SERVER['ADMIN_PATH'] = $_ENV['ADMIN_PATH'] = 'stiller-eingang';
        $client = self::createClient();
        $crawler = $client->request('GET', '/stiller-eingang/login');
        self::assertResponseIsSuccessful();
        $client->submit($crawler->selectButton('Anmelden')->form(['_username' => 'admin', '_password' => 'Fixture-only-password']));
        self::assertResponseRedirects('/stiller-eingang');
        // Im Test heisst das Sitzungscookie anders als im Betrieb; der Pfad ist, was zaehlt.
        $paths = array_map(static fn ($cookie): string => $cookie->getPath(), $client->getCookieJar()->all());
        self::assertContains('/stiller-eingang', $paths, 'Das Sitzungscookie muss fuer den neuen Pfad gelten.');
        self::assertNotContains('/admin', $paths);
        $client->followRedirect();
        self::assertResponseIsSuccessful();
        self::assertSelectorExists('a[href="/stiller-eingang/logout"], form[action="/stiller-eingang/logout"]');
    }

    public function test404SettingsCreateDraftAndProtectAssignmentFromCsrfAndStaleWrites(): void
    {
        $client = $this->login();
        $crawler = $client->request('GET', '/admin/settings');
        self::assertSelectorExists('#not-found-picker[role="combobox"]');
        $form = $crawler->selectButton('404-Vorlage anlegen')->form();
        $values = $form->getPhpValues();
        $client->request('POST', '/admin/settings/not-found', [...$values, '_csrf_token' => 'invalid']);
        self::assertSame(1, (int) $this->db->fetchOne('SELECT COUNT(*) FROM page'));
        $client->submit($form);
        self::assertResponseRedirects();
        $id = json_decode($this->db->fetchOne('SELECT settings FROM website WHERE id = ?', ['default']), true)['notFoundPageId'];
        self::assertResponseRedirects('/admin/pages/'.$id);
        self::assertNull($this->db->fetchOne('SELECT published_revision_id FROM page WHERE id = ?', [$id]));
        $client->request('POST', '/admin/settings/not-found', ['_csrf_token' => $values['_csrf_token'], 'notFoundPageId' => '', 'expectedId' => '']);
        self::assertSame($id, json_decode($this->db->fetchOne('SELECT settings FROM website WHERE id = ?', ['default']), true)['notFoundPageId']);
        $client->followRedirect();
        self::assertSelectorTextContains('body', 'inzwischen geändert');
        $crawler = $client->request('GET', '/admin/settings');
        $client->submit($crawler->selectButton('404-Zuordnung speichern')->form(['notFoundPageId' => '']));
        self::assertSame('', json_decode($this->db->fetchOne('SELECT settings FROM website WHERE id = ?', ['default']), true)['notFoundPageId']);
    }

    public function test404AssignmentRequiresPublicationRights(): void
    {
        // Ein Redakteur sieht die Einstellungen gar nicht erst: alles dort wirkt sofort.
        $client = $this->login('editor');
        $client->request('GET', '/admin/settings');
        self::assertResponseStatusCodeSame(403);
        $client->request('POST', '/admin/settings/not-found', ['action' => 'create']);
        self::assertResponseStatusCodeSame(403);
        self::assertSame(1, (int) $this->db->fetchOne('SELECT COUNT(*) FROM page'));
        // Ein Veroeffentlicher darf die 404-Seite zuordnen, aber die Unternehmensdaten nicht aendern.
        $this->login('publisher', $client);
        $client->request('GET', '/admin/settings');
        self::assertResponseIsSuccessful();
        self::assertSelectorExists('#not-found-form');
        self::assertSelectorNotExists('form[action="/admin/settings/company"]');
    }

    /**
     * Wer was aendern darf, steht in der Rollenhilfe - und hier, damit es so bleibt.
     *
     * Jede Zeile: eine Route, die Rolle, die zu wenig ist, und die Antwort 403. Ohne Anmeldung
     * fuehrt jede dieser Adressen zur Anmeldung. Die Rollen, die duerfen, pruefen die uebrigen Tests.
     */
    public function testEveryLiveChangeNeedsTheRoleTheRoleHelpNames(): void
    {
        $tooLittle = [
            // Design, Unternehmensdaten, System, Benutzer, endgueltiges Loeschen: Administrator.
            ['publisher', 'GET', '/admin/theme'], ['publisher', 'POST', '/admin/theme/save'], ['publisher', 'POST', '/admin/theme/fonts'],
            ['publisher', 'POST', '/admin/settings/company'],
            ['publisher', 'GET', '/admin/system'], ['publisher', 'POST', '/admin/system/wartung'], ['publisher', 'POST', '/admin/system/sicherung'],
            ['publisher', 'GET', '/admin/aufgaben'], ['publisher', 'POST', '/admin/aufgaben/ausfuehren'],
            ['publisher', 'GET', '/admin/benutzer'], ['publisher', 'POST', '/admin/benutzer/neu'],
            // Ein Plugin bringt Code auf die Website: Administrator.
            ['publisher', 'GET', '/admin/plugins'], ['publisher', 'POST', '/admin/plugins/vergleich/an'], ['publisher', 'POST', '/admin/plugins/vergleich/einstellungen'],
            ['publisher', 'POST', '/admin/pages/p1/delete'],
            // Alles, was sofort auf der Website steht: Veroeffentlicher.
            ['editor', 'GET', '/admin/settings'], ['editor', 'POST', '/admin/settings/redirects'], ['editor', 'POST', '/admin/settings/rechtliches'], ['editor', 'POST', '/admin/settings/not-found'],
            ['editor', 'GET', '/admin/partials'], ['editor', 'POST', '/admin/partials/new'],
            ['editor', 'GET', '/admin/menus'], ['editor', 'POST', '/admin/menus/header'],
            ['editor', 'GET', '/admin/forms'], ['editor', 'POST', '/admin/forms/neu'],
            ['editor', 'POST', '/admin/pages/p1/schedule'], ['editor', 'POST', '/admin/api/pages/p1/publish'],
        ];
        $client = null;
        foreach (['publisher', 'editor'] as $role) {
            $client = $this->login($role, $client);
            foreach (array_filter($tooLittle, static fn (array $row): bool => $row[0] === $role) as [, $method, $path]) {
                $client->request($method, $path);
                self::assertSame(403, $client->getResponse()->getStatusCode(), sprintf('%s %s %s', $role, $method, $path));
            }
        }
        // Ein Redakteur sieht in der Navigation nur, was er oeffnen darf.
        $crawler = $client->request('GET', '/admin');
        self::assertResponseIsSuccessful();
        $links = $crawler->filter('.nav-item')->each(static fn ($node): string => (string) $node->attr('href'));
        foreach (['/admin/partials', '/admin/menus', '/admin/forms', '/admin/theme', '/admin/settings', '/admin/system', '/admin/plugins', '/admin/benutzer'] as $hidden) {
            self::assertNotContains($hidden, $links, $hidden.' gehoert nicht in die Navigation eines Redakteurs.');
        }
        self::assertContains('/admin/media', $links);
        // Ohne Anmeldung: keine 403-Auskunft, sondern die Anmeldung.
        $anonymous = $client;
        $anonymous->getCookieJar()->clear();
        foreach ([['GET', '/admin'], ['POST', '/admin/api/pages/p1/draft'], ['POST', '/admin/theme/save'], ['POST', '/admin/menus/header']] as [$method, $path]) {
            $anonymous->request($method, $path);
            self::assertResponseRedirects('http://localhost/admin/login', null, $method.' '.$path);
        }
        // Und ohne Anmeldung ist nichts geschrieben worden.
        self::assertSame(1, (int) $this->db->fetchOne('SELECT COUNT(*) FROM page'));
        self::assertSame(0, (int) $this->db->fetchOne('SELECT COUNT(*) FROM menu'));
    }

    public function testEverySharedAreaOpensPreviewsAndSavesWithConflictProtection(): void
    {
        $client = $this->login();
        $partials = new PartialRepository($this->db, new DocumentValidator());
        $partials->create('section', 'shared-test', 'Gemeinsamer Abschnitt', DemoContent::areas()['footer']['document']);
        foreach ($partials->all() as $partial) {
            $base = '/admin/partials/'.$partial['id'];
            $client->request('GET', $base);
            self::assertResponseIsSuccessful();
            self::assertSelectorExists('#editor[data-api="'.$base.'"]');
            self::assertSelectorNotExists('#publish');
            $client->request('GET', $base.'/document');
            $data = json_decode($client->getResponse()->getContent(), true, 512, JSON_THROW_ON_ERROR);
            $document = $data['document'];
            $document['title'] .= ' bearbeitet';
            $headers = ['CONTENT_TYPE' => 'application/json', 'HTTP_X_CSRF_TOKEN' => $data['csrfToken']];
            $body = json_encode(['document' => $document, 'expectedVersion' => $data['version']], JSON_THROW_ON_ERROR);
            $client->request('POST', $base.'/preview', server: $headers, content: $body);
            self::assertResponseIsSuccessful();
            $client->request('POST', $base.'/draft', server: $headers, content: $body);
            self::assertResponseIsSuccessful();
            $client->request('POST', $base.'/draft', server: $headers, content: $body);
            self::assertResponseStatusCodeSame(409);
            $client->request('GET', $base.'/document');
            self::assertSame($document['title'], json_decode($client->getResponse()->getContent(), true)['document']['title']);
        }
    }

    private function data(KernelBrowser $client): array
    {
        $client->request('GET', '/admin/api/pages/p1');
        self::assertResponseIsSuccessful();

        return json_decode($client->getResponse()->getContent(), true, 512, JSON_THROW_ON_ERROR);
    }

    private function post(KernelBrowser $client, string $action, array $data, string $token = ''): void
    {
        $client->request('POST', '/admin/api/pages/p1/'.$action, server: ['CONTENT_TYPE' => 'application/json', 'HTTP_X_CSRF_TOKEN' => $token], content: json_encode($data));
    }

    public function testAnonymousCannotReadDraftOrWrite(): void
    {
        $client = self::createClient();
        foreach (['/admin', '/admin/pages/p1', '/admin/api/pages/p1', '/admin/media', '/admin/api/media', '/admin/menus', '/admin/forms', '/admin/statistik', '/admin/statistik.csv'] as $url) {
            $client->request('GET', $url);
            self::assertResponseRedirects('http://localhost/admin/login');
            self::assertStringNotContainsString('schemaVersion', $client->getResponse()->getContent());
        }
        foreach (['draft', 'publish', 'preview'] as $action) {
            $this->post($client, $action, []);
            self::assertResponseRedirects('http://localhost/admin/login');
        }
        foreach ([['/admin/pages', ['title' => 'Geschmuggelt', 'slug' => 'geschmuggelt']], ['/admin/pages/p1/delete', ['expectedVersion' => 2]], ['/admin/menus/header', ['name' => 'X', 'expectedVersion' => 0]], ['/admin/api/style-presets', ['name' => 'X']]] as [$url, $body]) {
            $client->request('POST', $url, $body);
            self::assertResponseRedirects('http://localhost/admin/login');
        }
        self::assertSame(1, (int) $this->db->fetchOne('SELECT COUNT(*) FROM page'));
    }

    public function testLiveSearchDoesNotExposeContentToAnonymousRequests(): void
    {
        $client = self::createClient();
        foreach (['/admin', '/admin/posts', '/admin/media', '/admin/api/media/'.str_repeat('a', 32)] as $url) {
            $client->request('GET', $url.'?q=secret', server: ['HTTP_X_REQUESTED_WITH' => 'XMLHttpRequest', 'HTTP_ACCEPT' => 'application/json']);
            self::assertResponseRedirects('http://localhost/admin/login');
            self::assertStringNotContainsString('"html":', $client->getResponse()->getContent());
        }
    }

    public function testImageSettingsOfAPostArePickedFromTheLibraryNotTypedAsAnId(): void
    {
        // Umut: „nicht dein ernst? ID aus Mediathek? schöne auswahl rein! auch bei Beitragsbild"
        $client = $this->login('editor');
        $pages = new PageRepository($this->db, new DocumentValidator(), new SiteSettings($this->db, new MediaLibrary($this->db, $this->path.'-media')));
        $id = $pages->createPage('mit-bild', null, 'post', DemoContent::pages()['home']);
        $media = str_repeat('c', 32);
        $this->db->insert('media', ['id' => $media, 'title' => 'Klassenzimmer', 'alt' => '', 'variants' => json_encode([['src' => '/media/'.$media.'/480', 'width' => 480, 'height' => 320, 'bytes' => 1]]), 'archived' => 0, 'version' => 1, 'created_at' => gmdate('Y-m-d H:i:s')]);
        $this->db->executeStatement('UPDATE page SET featured_media_id = ? WHERE id = ?', [$media, $id]);

        $crawler = $client->request('GET', '/admin/posts');
        self::assertResponseIsSuccessful();
        self::assertStringNotContainsString('ID aus der Mediathek', $client->getResponse()->getContent());
        self::assertCount(1, $crawler->filter('script[src^="/assets/media-field.js"]'));
        // Das gewählte Beitragsbild: Kennung versteckt, Vorschau und Titel sichtbar.
        $featured = $crawler->filter('input[name="featuredMediaId"]')->closest('[data-media-field]');
        self::assertCount(1, $featured);
        self::assertSame('hidden', $featured->filter('input[name="featuredMediaId"]')->attr('type'));
        self::assertSame($media, $featured->filter('input[name="featuredMediaId"]')->attr('value'));
        self::assertSame('/media/'.$media.'/480', $featured->filter('img')->attr('src'));
        self::assertStringContainsString('Klassenzimmer', $featured->text());
        self::assertStringContainsString('Anderes Bild wählen', $featured->text());
        // Ohne Vorschaubild: Wählen statt Kennung eintippen.
        $og = $crawler->filter('input[name="ogMediaId"]')->closest('[data-media-field]');
        self::assertCount(1, $og);
        self::assertStringContainsString('Bild wählen oder hochladen', $og->text());
        self::assertNull($og->filter('img')->attr('src'));
    }

    public function testLiveSearchReturnsFilteredEscapedResultsWithTheSamePermissionsAsTheFullScreen(): void
    {
        $client = $this->login('editor');
        $pages = new PageRepository($this->db, new DocumentValidator(), new SiteSettings($this->db, new MediaLibrary($this->db, $this->path.'-media')));
        foreach (['page', 'post'] as $type) {
            $document = DemoContent::pages()['home'];
            $document['title'] = 'Suchprobe Über uns <img src=x onerror=alert(1)> '.$type;
            $pages->createPage('suchprobe-'.$type, null, $type, $document);
        }
        foreach (['/admin' => 'page', '/admin/posts' => 'post'] as $url => $type) {
            $headers = ['HTTP_X_REQUESTED_WITH' => 'XMLHttpRequest'];
            $client->request('GET', $url.'?q=suchprobe&status=draft&seite=99&limit=50', server: $headers);
            self::assertResponseIsSuccessful();
            self::assertResponseHeaderSame('Content-Type', 'application/json');
            $data = json_decode($client->getResponse()->getContent(), true, 512, JSON_THROW_ON_ERROR);
            self::assertSame(1, $data['total']);
            self::assertSame(['q' => 'suchprobe', 'status' => 'draft', 'limit' => 50, 'seite' => 1], $data['parameters']);
            self::assertStringContainsString('suchprobe-'.$type, $data['html']);
            self::assertStringNotContainsString('suchprobe-'.('page' === $type ? 'post' : 'page'), $data['html']);
            self::assertStringNotContainsString('<img src=x', $data['html']);
            self::assertStringContainsString('&lt;img src=x', $data['html']);
            self::assertStringNotContainsString('delete-panel', $data['html']);
            self::assertStringNotContainsString('<html', $data['html']);
            self::assertStringContainsString('name="_list_query" value="suchprobe"', $data['html']);
            $client->request('GET', $url.'?q='.rawurlencode('über uns'), server: $headers);
            self::assertSame(1, json_decode($client->getResponse()->getContent(), true)['total']);
            $client->request('GET', $url.'?q=suchprobe&status=published', server: $headers);
            self::assertSame(0, json_decode($client->getResponse()->getContent(), true)['total']);
        }
    }

    public function testCreatingAPageNeedsACsrfTokenAndStartsAsAPrivateDraft(): void
    {
        $client = $this->login('editor');
        $client->request('POST', '/admin/pages', ['title' => 'Ohne Token', 'slug' => 'ohne-token', '_csrf_token' => 'wrong']);
        self::assertResponseRedirects('/admin');
        self::assertSame(1, (int) $this->db->fetchOne('SELECT COUNT(*) FROM page'));

        $crawler = $client->request('GET', '/admin');
        $client->submit($crawler->filter('.create-form')->form(['title' => 'Über uns', 'slug' => '', 'type' => 'page', 'parent_id' => '']));
        self::assertResponseRedirects();
        // The address is derived from the title when the field is left empty.
        self::assertSame('ueber-uns', $this->db->fetchOne('SELECT path FROM page WHERE slug <> ?', ['home']));
        // A new page is a draft, so it must not answer publicly yet.
        $client->request('GET', '/ueber-uns');
        self::assertResponseStatusCodeSame(404);
    }

    public function testEditorsAreNeitherOfferedNorAllowedToDelete(): void
    {
        $client = $this->login('editor');
        $crawler = $client->request('GET', '/admin');
        self::assertCount(0, $crawler->filter('.delete-panel'), 'An editor must not be offered the delete action.');
        $client->request('POST', '/admin/pages/p1/delete', ['_csrf_token' => $crawler->filter('input[name="_csrf_token"]')->last()->attr('value'), 'expectedVersion' => 2]);
        self::assertResponseStatusCodeSame(403);
        self::assertSame(1, (int) $this->db->fetchOne('SELECT COUNT(*) FROM page'));
    }

    public function testAdministratorsDeleteAPageWithAllRevisionsOnlyWithACsrfToken(): void
    {
        $client = $this->login('admin');
        $client->request('POST', '/admin/pages/p1/delete', ['_csrf_token' => 'wrong', 'expectedVersion' => 2]);
        self::assertResponseRedirects('/admin');
        self::assertSame(1, (int) $this->db->fetchOne('SELECT COUNT(*) FROM page'));

        $crawler = $client->request('GET', '/admin');
        $client->submit($crawler->filter('.delete-panel form')->form());
        self::assertResponseRedirects('/admin');
        self::assertSame(0, (int) $this->db->fetchOne('SELECT COUNT(*) FROM page'));
        self::assertSame(0, (int) $this->db->fetchOne('SELECT COUNT(*) FROM revision'));
        $client->request('GET', '/');
        self::assertResponseStatusCodeSame(404);
    }

    public function testMenuFormBuildsATreeFromFlatRowsAndReplacesTheFixedNavigation(): void
    {
        $client = $this->login('publisher');
        $crawler = $client->request('GET', '/admin/menus');
        self::assertResponseIsSuccessful();

        // Rows are ordered by position and nested by level, so the form needs no JavaScript.
        $client->request('POST', '/admin/menus/header', [
            '_csrf_token' => $crawler->filter('.menu-form input[name="_csrf_token"]')->first()->attr('value'),
            'name' => 'Hauptnavigation',
            'expectedVersion' => 0,
            'items' => [
                ['position' => 30, 'level' => 1, 'label' => 'Extern', 'type' => 'url', 'url' => 'https://hausklar.app'],
                ['position' => 10, 'level' => 1, 'label' => 'Start', 'type' => 'page', 'pageId' => 'p1', 'anchor' => ''],
                ['position' => 20, 'level' => 2, 'label' => 'Kontakt', 'type' => 'page', 'pageId' => 'p1', 'anchor' => '#kontakt'],
                ['position' => 40, 'level' => 1, 'label' => '   ', 'type' => 'page', 'pageId' => 'p1'],
            ],
        ]);
        self::assertResponseRedirects('/admin/menus');

        $items = json_decode($this->db->fetchOne('SELECT items FROM menu WHERE slot = ?', ['header']), true);
        self::assertSame(['Start', 'Extern'], array_column($items, 'label'));
        self::assertSame('Kontakt', $items[0]['children'][0]['label']);
        // A leading hash in the anchor field is accepted and normalised away.
        self::assertSame('kontakt', $items[0]['children'][0]['anchor']);
        // The blank row is an add slot, not an entry.
        self::assertCount(2, $items);

        $public = $client->request('GET', '/')->filter('nav[aria-label="Hauptnavigation"] > .menu-list a');
        // The navigation comes from the menu now, not from the links hard-coded in the template.
        self::assertSame(['/', '/#kontakt', 'https://hausklar.app'], $public->extract(['href']));
    }

    /**
     * ADR 110: Ein Menüeintrag wird über das Formular zum Button - mit Gestalt, Farben, Symbol,
     * Bewegung und Anzeige auf dem Telefon. Die Kennung für die Farbregel entsteht beim ersten
     * Speichern und bleibt danach gleich; leere Felder heißen Website-Standard und fehlen.
     */
    public function testMenuFormTurnsAnEntryIntoAButtonAndKeepsItsId(): void
    {
        $client = $this->login('publisher');
        $crawler = $client->request('GET', '/admin/menus');
        $token = $crawler->filter('.menu-form input[name="_csrf_token"]')->first()->attr('value');
        $row = ['position' => 10, 'level' => 1, 'label' => 'Angebot anfragen', 'type' => 'url', 'url' => '#kontakt',
            'icon' => 'arrow-right', 'iconPosition' => 'after', 'button' => '1', 'buttonId' => '', 'buttonShape' => 'pill', 'buttonAppearance' => '',
            'buttonSize' => '', 'buttonFill' => '#b71c22', 'buttonInk' => '', 'buttonHoverFill' => '@ink', 'buttonHoverInk' => '', 'buttonIconColor' => '',
            'iconMotion' => 'slide', 'buttonMobile' => 'bar'];
        $client->request('POST', '/admin/menus/header', ['_csrf_token' => $token, 'name' => 'Hauptnavigation', 'expectedVersion' => 0, 'items' => [$row]]);
        self::assertResponseRedirects('/admin/menus');
        $button = json_decode($this->db->fetchOne('SELECT items FROM menu WHERE slot = ?', ['header']), true)[0]['button'];
        self::assertMatchesRegularExpression('/^m[a-f0-9]{10}$/', $button['id']);
        self::assertSame(['shape' => 'pill', 'fill' => '#b71c22', 'hoverFill' => '@ink', 'mobile' => 'bar', 'iconMotion' => 'slide'], array_diff_key($button, ['id' => true]));

        // Die Verwaltung zeigt die Werte wieder an, und erneutes Speichern behält die Kennung.
        $crawler = $client->request('GET', '/admin/menus');
        self::assertSame($button['id'], $crawler->filter('input[data-key="buttonId"]')->attr('value'));
        self::assertSame('pill', $crawler->filter('select[data-key="buttonShape"] option[selected]')->attr('value'));
        $client->request('POST', '/admin/menus/header', ['_csrf_token' => $token, 'name' => 'Hauptnavigation', 'expectedVersion' => 1, 'items' => [[...$row, 'buttonId' => $button['id']]]]);
        self::assertSame($button['id'], json_decode($this->db->fetchOne('SELECT items FROM menu WHERE slot = ?', ['header']), true)[0]['button']['id']);

        // Ohne Häkchen ist es wieder ein Link.
        $client->request('POST', '/admin/menus/header', ['_csrf_token' => $token, 'name' => 'Hauptnavigation', 'expectedVersion' => 2, 'items' => [array_diff_key($row, ['button' => true])]]);
        self::assertArrayNotHasKey('button', json_decode($this->db->fetchOne('SELECT items FROM menu WHERE slot = ?', ['header']), true)[0]);
    }

    public function testMenuWritesNeedAPublisherRoleACsrfTokenAndTheCurrentVersion(): void
    {
        $menus = new MenuRepository($this->db, new SiteSettings($this->db, new MediaLibrary($this->db, $this->path.'-media')));
        $menus->save('header', 'Hauptnavigation', [['label' => 'Start', 'type' => 'page', 'pageId' => 'p1', 'anchor' => '', 'children' => []]], 0);

        $client = $this->login('publisher');
        $crawler = $client->request('GET', '/admin/menus');
        $token = $crawler->filter('.menu-form input[name="_csrf_token"]')->first()->attr('value');
        $entry = ['position' => 10, 'level' => 1, 'label' => 'Geaendert', 'type' => 'page', 'pageId' => 'p1', 'anchor' => ''];

        $client->request('POST', '/admin/menus/header', ['_csrf_token' => 'wrong', 'name' => 'X', 'expectedVersion' => 1, 'items' => [$entry]]);
        self::assertResponseRedirects('/admin/menus');
        self::assertSame('Hauptnavigation', $this->db->fetchOne('SELECT name FROM menu WHERE slot = ?', ['header']));

        // A stale version must not overwrite a newer menu.
        $client->request('POST', '/admin/menus/header', ['_csrf_token' => $token, 'name' => 'Veraltet', 'expectedVersion' => 0, 'items' => [$entry]]);
        self::assertResponseRedirects('/admin/menus');
        self::assertSame('Hauptnavigation', $this->db->fetchOne('SELECT name FROM menu WHERE slot = ?', ['header']));

        // An unsafe target is refused with a message instead of being stored.
        $client->request('POST', '/admin/menus/header', ['_csrf_token' => $token, 'name' => 'Neu', 'expectedVersion' => 1, 'items' => [['position' => 10, 'level' => 1, 'label' => 'Boese', 'type' => 'url', 'url' => 'javascript:alert(1)']]]);
        $client->followRedirect();
        self::assertSelectorExists('.notice.error');
        self::assertStringNotContainsString('javascript:', $this->db->fetchOne('SELECT items FROM menu WHERE slot = ?', ['header']));

        $client->request('POST', '/admin/menus/header', ['_csrf_token' => $token, 'name' => 'Neu', 'expectedVersion' => 1, 'items' => [$entry]]);
        self::assertSame('Neu', $this->db->fetchOne('SELECT name FROM menu WHERE slot = ?', ['header']));
    }

    /** @param array<string, string> $settings overrides for the mail settings */
    private function contactForm(array $settings = []): FormRepository
    {
        $forms = new FormRepository($this->db);
        $forms->save('kontakt', 'Kontakt', [
            ['name' => 'name', 'type' => 'text', 'label' => 'Name', 'required' => true],
            ['name' => 'email', 'type' => 'email', 'label' => 'E-Mail', 'required' => true],
            ['name' => 'thema', 'type' => 'select', 'label' => 'Thema', 'required' => true, 'options' => ['Beratung', 'Support']],
            ['name' => 'nachricht', 'type' => 'textarea', 'label' => 'Nachricht', 'required' => false],
            ['name' => 'datenschutz', 'type' => 'consent', 'label' => 'Ich willige ein.'],
        ], ['recipient' => 'info@kant-it.de', 'subject' => 'Anfrage', 'replyToField' => 'email', 'success' => 'Danke.', ...$settings], 0);

        return $forms;
    }

    /** Publishes a page carrying the contact form block and returns the page path. */
    private function pageWithForm(): string
    {
        $document = DemoContent::starter('Kontakt');
        $document['schemaVersion'] = 8;
        $document['blocks'][] = ['id' => 'formblock', 'type' => 'form', 'props' => ['form' => 'kontakt']];
        $pages = new PageRepository($this->db, new DocumentValidator(), new SiteSettings($this->db, new MediaLibrary($this->db, $this->path.'-media')));
        $revision = $pages->saveDraft('p1', $document, (int) $this->db->fetchOne('SELECT version FROM page WHERE id = ?', ['p1']));
        $pages->publish('p1', $revision, (int) $this->db->fetchOne('SELECT version FROM page WHERE id = ?', ['p1']));

        return 'home';
    }

    /** @return array<string, string> a body that would pass every check */
    private function validBody(string $issued): array
    {
        return [
            'page' => 'home', 'block' => 'formblock', 'website' => '',
            'issued' => $issued, 'issuedSignature' => hash_hmac('sha256', $issued, 'isolated-test-secret'),
            'name' => 'Umut', 'email' => 'umut@example.com', 'thema' => 'Beratung',
            'nachricht' => 'Bitte um Rückruf.', 'datenschutz' => 'ja',
        ];
    }

    public function testFormRendersWithoutScriptAndStoresAValidSubmissionWithConsent(): void
    {
        $this->contactForm();
        $this->pageWithForm();
        $client = self::createClient();

        $html = $client->request('GET', '/')->html();
        self::assertStringContainsString('action="/formular/kontakt"', $html);
        self::assertStringContainsString('<button class="button cms-button" type="submit">Absenden</button>', $html);
        self::assertStringContainsString('Ich willige ein.', $html);
        // The honeypot exists but is kept out of the tab order and away from assistive technology.
        self::assertStringContainsString('name="website"', $html);
        self::assertStringContainsString('tabindex="-1"', $html);
        self::assertStringNotContainsString('<script', $client->getResponse()->getContent());

        $issued = (string) (time() - 10);
        $client->request('POST', '/formular/kontakt', $this->validBody($issued));
        // Post/Redirect/Get, so reloading the result page sends nothing twice.
        self::assertResponseStatusCodeSame(303);
        self::assertStringContainsString('?gesendet=kontakt#formblock', (string) $client->getResponse()->headers->get('Location'));
        // Ohne eigene Absenderadresse geht die Post vom Empfaenger an sich selbst.
        $mail = self::getMailerMessage();
        self::assertNotNull($mail);
        self::assertEmailAddressContains($mail, 'From', 'info@kant-it.de');
        self::assertEmailAddressContains($mail, 'To', 'info@kant-it.de');
        self::assertEmailAddressContains($mail, 'Reply-To', 'umut@example.com');

        $row = $this->db->fetchAssociative('SELECT * FROM form_submission');
        self::assertNotFalse($row);
        $data = json_decode($row['data'], true);
        self::assertSame('Umut', $data['name']);
        self::assertSame('ja', $data['datenschutz']);
        // The moment of consent is stored, the sender address never is.
        self::assertNotNull($row['consent_at']);
        self::assertSame(64, strlen($row['sender_hash']));
        self::assertStringNotContainsString('127.0.0.1', json_encode($row));

        // The success message appears on the page the form sits on.
        $client->request('GET', '/?gesendet=kontakt');
        self::assertStringContainsString('Danke.', $client->getResponse()->getContent());
    }

    public function testAFormMaySendFromItsOwnAddress(): void
    {
        // Umut: die Versandadresse soll sich festlegen lassen - bisher war sie immer der
        // Empfaenger, und manche Hoster nehmen fremde Absender gar nicht erst an.
        $forms = $this->contactForm(['sender' => 'formular@kant-it.de']);
        $this->pageWithForm();
        $client = self::createClient();

        $client->request('POST', '/formular/kontakt', $this->validBody((string) (time() - 10)));
        self::assertResponseStatusCodeSame(303);
        $mail = self::getMailerMessage();
        self::assertNotNull($mail);
        self::assertEmailAddressContains($mail, 'From', 'formular@kant-it.de');
        self::assertEmailAddressContains($mail, 'To', 'info@kant-it.de');
        self::assertEmailAddressContains($mail, 'Reply-To', 'umut@example.com');

        // Eine kaputte Absenderadresse wird abgewiesen, eine leere bedeutet: wie der Empfaenger.
        try {
            $forms->save('kontakt', 'Kontakt', [['name' => 'email', 'type' => 'email', 'label' => 'E-Mail']], ['recipient' => 'info@kant-it.de', 'sender' => 'kein-postfach'], 1);
            self::fail('Eine ungueltige Absenderadresse darf nicht gespeichert werden.');
        } catch (InvalidForm $e) {
            self::assertStringContainsString('Absenderadresse', $e->getMessage());
        }
        $forms->save('kontakt', 'Kontakt', [['name' => 'email', 'type' => 'email', 'label' => 'E-Mail']], ['recipient' => 'info@kant-it.de', 'sender' => ' '], 1);
        self::assertSame('', $forms->findBySlug('kontakt')['settings']['sender']);
    }

    public function testInvalidSubmissionKeepsEveryEntryAndNamesTheOffendingFields(): void
    {
        $this->contactForm();
        $this->pageWithForm();
        $client = self::createClient();

        $issued = (string) (time() - 10);
        $body = [...$this->validBody($issued), 'email' => 'keine-adresse', 'thema' => 'Erfunden', 'name' => '', 'datenschutz' => ''];
        $crawler = $client->request('POST', '/formular/kontakt', $body);
        self::assertResponseStatusCodeSame(422);
        // Nothing is stored and nothing is sent while anything is wrong.
        self::assertSame(0, (int) $this->db->fetchOne('SELECT COUNT(*) FROM form_submission'));

        $html = $client->getResponse()->getContent();
        self::assertStringContainsString('Bitte gib eine gültige E-Mail-Adresse an.', $html);
        self::assertStringContainsString('Bitte wähle eine der angebotenen Optionen.', $html);
        self::assertStringContainsString('Dieses Feld wird benötigt.', $html);
        self::assertStringContainsString('Ohne diese Einwilligung', $html);
        // Each message belongs to its field and is announced as such.
        self::assertSame('formblock-email-error', $crawler->filter('#formblock-email')->attr('aria-describedby'));
        self::assertSame('true', $crawler->filter('#formblock-email')->attr('aria-invalid'));
        // Und die Seite sieht aus wie die Seite: Gestaltung, Kopf- und Fussbereich sind da.
        // Vorher baute der Formularcode die Seite selbst noch einmal auf und liess dabei Theme,
        // Blockstile und Schriften weg - wer ein Pflichtfeld vergass, sah eine nackte Seite.
        self::assertStringContainsString('<style>', $html, 'Die Gestaltung fehlt auf der Fehlerseite.');
        self::assertStringContainsString('.kant{font-family', $html);
        self::assertCount(1, $crawler->filter('[role=alert]'));
        // The entries survive the rejection.
        self::assertSame('keine-adresse', $crawler->filter('#formblock-email')->attr('value'));
        self::assertStringContainsString('Bitte um Rückruf.', $crawler->filter('#formblock-nachricht')->text());
    }

    /**
     * @return iterable<string, array{callable(string): array}>
     */
    public static function droppedSubmissions(): iterable
    {
        $sign = static fn (string $issued): string => hash_hmac('sha256', $issued, 'isolated-test-secret');
        yield 'honeypot filled' => [static fn (array $body): array => [...$body, 'website' => 'https://spam.example']];
        yield 'submitted too fast' => [static fn (array $body): array => [...$body, 'issued' => (string) time(), 'issuedSignature' => $sign((string) time())]];
        yield 'timestamp forged' => [static fn (array $body): array => [...$body, 'issuedSignature' => 'nicht-signiert']];
        yield 'timestamp far in the past' => [static function (array $body) use ($sign): array {
            $old = (string) (time() - 200000);

            return [...$body, 'issued' => $old, 'issuedSignature' => $sign($old)];
        }];
    }

    #[DataProvider('droppedSubmissions')]
    public function testSpamProtectionDropsSubmissionsQuietlyWithoutStoringThem(callable $tamper): void
    {
        $this->contactForm();
        $this->pageWithForm();
        $client = self::createClient();

        $client->request('POST', '/formular/kontakt', $tamper($this->validBody((string) (time() - 10))));
        // Answered like a success so an automated sender learns nothing from the response.
        self::assertResponseStatusCodeSame(303);
        self::assertSame(0, (int) $this->db->fetchOne('SELECT COUNT(*) FROM form_submission'));
    }

    public function testRateLimitStopsTheSixthSubmissionWithinAnHour(): void
    {
        $forms = $this->contactForm();
        $this->pageWithForm();
        $client = self::createClient();

        for ($i = 0; $i < FormRepository::RATE_LIMIT; ++$i) {
            $client->request('POST', '/formular/kontakt', $this->validBody((string) (time() - 10)));
            self::assertResponseStatusCodeSame(303);
        }
        self::assertSame(FormRepository::RATE_LIMIT, (int) $this->db->fetchOne('SELECT COUNT(*) FROM form_submission'));

        $client->request('POST', '/formular/kontakt', $this->validBody((string) (time() - 10)));
        self::assertResponseStatusCodeSame(303);
        self::assertSame(FormRepository::RATE_LIMIT, (int) $this->db->fetchOne('SELECT COUNT(*) FROM form_submission'));
        self::assertTrue($forms->rateLimited(hash_hmac('sha256', '127.0.0.1', 'isolated-test-secret')));
    }

    public function testAFormCarriesItsOwnColoursOntoThePageAndTheAdministrationRefusesBadOnes(): void
    {
        $forms = $this->contactForm();
        $form = $forms->findBySlug('kontakt');
        // Ohne Gestaltung keine Regel: die Website gilt.
        self::assertSame('', $forms->css($form, (new Theme($this->db))->load()));
        $forms->save('kontakt', 'Kontakt', $form['fields'], [...$form['settings'], 'buttonLabel' => 'Anfrage senden', 'fieldBorderColor' => '@ink', 'fieldBackgroundColor' => '#fffdf7', 'buttonColor' => '#124b36'], $form['version']);
        $this->pageWithForm();

        $client = $this->login('publisher');
        $crawler = $client->request('GET', '/');
        self::assertResponseIsSuccessful();
        $html = (string) $client->getResponse()->getContent();
        self::assertSame('kontakt', $crawler->filter('.block-form')->attr('data-form'));
        self::assertSame('Anfrage senden', $crawler->filter('.block-form button[type="submit"]')->text());
        // Rahmen und Grund der Felder direkt, der Button ueber die Token des Standardbuttons - und
        // die Ableitung der Darstellung noch einmal, damit sie diese Fuellung nimmt, nicht die vom
        // Wurzelelement.
        preg_match('/\.block-form\[data-form="kontakt"\]\{([^}]*)\}/', $html, $rule);
        self::assertStringContainsString('--form-border:var(--k-ink)', $rule[1] ?? '');
        self::assertStringContainsString('--form-bg:#fffdf7', $rule[1] ?? '');
        self::assertStringContainsString('--kb-fill:#124b36', $rule[1] ?? '');
        self::assertStringContainsString('--kb-bg:var(--kb-fill)', $rule[1] ?? '');
        self::assertStringNotContainsString('--kb-ink:', $rule[1] ?? '', 'Nur gesetzte Farben werden geschrieben.');
        // Die Regel steht im gehashten Stylesblock, den die Richtlinie erlaubt.
        preg_match('#<style>(.*?)</style>#s', $html, $style);
        self::assertStringContainsString("'sha256-".base64_encode(hash('sha256', $style[1], true))."'", (string) $client->getResponse()->headers->get('Content-Security-Policy'));

        // Die Übersicht listet das Formular, bearbeitet wird es auf seiner eigenen Seite.
        $crawler = $client->request('GET', '/admin/forms');
        self::assertSame(0, $crawler->filter('.form-def')->count(), 'Die Übersicht zeigt keine Editoren.');
        self::assertSame('/admin/forms/kontakt', $crawler->filter('.form-list a')->first()->attr('href'));
        // Eine Farbe, die keine ist, wird mit Meldung abgelehnt und nichts geaendert.
        $crawler = $client->request('GET', '/admin/forms/kontakt');
        $token = $crawler->filter('.form-def input[name="_csrf_token"]')->first()->attr('value');
        self::assertCount(5, $crawler->filter('.form-def')->first()->filter('.field-card:not(.field-card-new)'), 'Jedes Feld ist eine Karte.');
        self::assertSame('Anfrage senden', $crawler->filter('.form-def')->first()->filter('[data-preview-button]')->text());
        $client->request('POST', '/admin/forms/kontakt', ['_csrf_token' => $token, 'name' => 'Kontakt', 'recipient' => 'info@kant-it.de', 'expectedVersion' => 2, 'buttonColor' => 'rot',
            'fields' => [['name' => 'email', 'type' => 'email', 'label' => 'E-Mail', 'required' => '1']]]);
        $client->followRedirect();
        self::assertSelectorTextContains('.notice.error', 'kein Farbwert für den Button');
        self::assertSame('#124b36', $forms->findBySlug('kontakt')['settings']['buttonColor']);
    }

    public function testFormAdministrationNeedsAPublisherRoleAndACsrfToken(): void
    {
        $client = $this->login('publisher');
        $crawler = $client->request('GET', '/admin/forms/neu');
        self::assertResponseIsSuccessful();
        $token = $crawler->filter('.form-def input[name="_csrf_token"]')->first()->attr('value');
        $field = ['fields' => [['name' => 'email', 'type' => 'email', 'label' => 'E-Mail', 'required' => '1']]];

        $client->request('POST', '/admin/forms/neu', [...$field, '_csrf_token' => 'wrong', 'slug' => 'kontakt', 'name' => 'Kontakt', 'recipient' => 'info@kant-it.de', 'expectedVersion' => 0]);
        self::assertResponseRedirects('/admin/forms');
        self::assertSame(0, (int) $this->db->fetchOne('SELECT COUNT(*) FROM form'));

        // A recipient that is not an address is refused with a message rather than stored.
        $client->request('POST', '/admin/forms/neu', [...$field, '_csrf_token' => $token, 'slug' => 'kontakt', 'name' => 'Kontakt', 'recipient' => 'kein-empfaenger', 'expectedVersion' => 0]);
        $client->followRedirect();
        self::assertSelectorExists('.notice.error');
        self::assertSame(0, (int) $this->db->fetchOne('SELECT COUNT(*) FROM form'));

        $client->request('POST', '/admin/forms/neu', [...$field, '_csrf_token' => $token, 'slug' => 'kontakt', 'name' => 'Kontakt', 'recipient' => 'info@kant-it.de', 'expectedVersion' => 0]);
        self::assertSame('Kontakt', $this->db->fetchOne('SELECT name FROM form'));
    }

    public function testTheEditorPicksFormsSectionsAndTermsFromListsInsteadOfTypedAddresses(): void
    {
        // Was ein Baustein nur verknüpft, kommt als Liste Adresse => Name - der Editor macht
        // daraus Auswahlfelder statt Textfelder für Adressen.
        $media = new MediaLibrary($this->db, $this->path.'-media');
        $pages = new PageRepository($this->db, new DocumentValidator(), new SiteSettings($this->db, $media));
        (new FormRepository($this->db))->save('anfrage', 'Anfrage', [['name' => 'email', 'type' => 'email', 'label' => 'E-Mail', 'required' => true, 'help' => '', 'options' => []]], ['recipient' => 'info@example.com'], 0);
        $band = DemoContent::starter('Werbeband');
        $band['blocks'] = [['id' => 'band-text', 'type' => 'text', 'props' => ['text' => 'Aktion']]];
        (new PartialRepository($this->db, new DocumentValidator()))->create('section', 'band', 'Werbeband', $band);
        $post = $pages->createPage('ein-beitrag', null, 'post', DemoContent::pages()['home']);
        (new PostRepository($this->db, $media, new SiteSettings($this->db, $media)))->saveMetadata($post, [], ['Projekte'], ['Umbau'], $pages->findForEditor($post)['version']);

        $client = $this->login('editor');
        $client->request('GET', '/admin/api/design');
        self::assertResponseIsSuccessful();
        $choices = json_decode($client->getResponse()->getContent(), true)['choices'];
        self::assertSame(['anfrage' => 'Anfrage'], $choices['forms']);
        self::assertSame(['band' => 'Werbeband'], $choices['sections']);
        self::assertSame(['projekte' => 'Projekte'], $choices['categories']);
        self::assertSame(['umbau' => 'Umbau'], $choices['tags']);
    }

    public function testMenuAnchorsAndPostTermsAreOfferedForChoosing(): void
    {
        $media = new MediaLibrary($this->db, $this->path.'-media');
        $pages = new PageRepository($this->db, new DocumentValidator(), new SiteSettings($this->db, $media));
        $document = DemoContent::starter('Leistungen');
        $document['schemaVersion'] = 21;
        $document['blocks'][] = ['id' => 'kontakt-sektion', 'type' => 'section', 'anchor' => 'kontakt', 'children' => [
            ['id' => 'kontakt-titel', 'type' => 'heading', 'props' => ['text' => 'So erreichen Sie uns', 'level' => 2]],
        ]];
        $id = $pages->createPage('leistungen', null, 'page', $document);

        // Die Sprungziele einer Seite, beschriftet mit ihrer Überschrift - nur für Rollen, die
        // Menüs bearbeiten.
        $client = $this->login('editor');
        $client->request('GET', '/admin/api/sprungziele/'.$id);
        self::assertResponseStatusCodeSame(403);
        $client = $this->login('admin', $client);
        $client->request('GET', '/admin/api/sprungziele/'.$id);
        self::assertResponseIsSuccessful();
        self::assertSame([['anchor' => 'kontakt', 'label' => 'So erreichen Sie uns (#kontakt)']], json_decode($client->getResponse()->getContent(), true)['items']);
        $client->request('GET', '/admin/api/sprungziele/gibt-es-nicht');
        self::assertResponseStatusCodeSame(404);

        // Vorhandene Kategorien und Schlagwörter stehen am Feld, damit man sie wählt statt neu tippt.
        $post = $pages->createPage('beitrag', null, 'post', DemoContent::pages()['home']);
        (new PostRepository($this->db, $media, new SiteSettings($this->db, $media)))->saveMetadata($post, [], ['Projekte'], ['Umbau'], $pages->findForEditor($post)['version']);
        $crawler = $client->request('GET', '/admin/posts');
        self::assertSame(['Projekte'], json_decode($crawler->filter('input[name="categories"]')->attr('data-term-input'), true));
        self::assertSame(['Umbau'], json_decode($crawler->filter('input[name="tags"]')->attr('data-term-input'), true));
        self::assertCount(1, $crawler->filter('script[src^="/assets/term-chips.js"]'));
    }

    public function testPluginSettingsForLinksAndImagesAreChosenNotTyped(): void
    {
        // Das Feld einer Plugin-Einstellung, direkt aus dem Makro der Plugin-Seite: ein Link
        // bleibt ein Textfeld mit Knöpfen daneben, ein Bild wird das Bildfeld der Mediathek.
        self::bootKernel();
        $twig = static::getContainer()->get('twig');
        $render = static fn (array $schema, string $value): string => $twig->createTemplate(
            "{% import 'admin/plugins.html.twig' as f %}{{ f.feld('probe', 'ziel', schema, value) }}",
        )->render(['schema' => $schema, 'value' => $value]);

        $link = $render(['kind' => 'url', 'label' => 'Ziel', 'maxLength' => 200, 'help' => ''], '/kontakt');
        self::assertStringContainsString('data-link-field', $link);
        self::assertMatchesRegularExpression('#<input id="plugin-probe-ziel" name="settings\[ziel\]" value="/kontakt"[^>]*data-link-input#', $link);

        $bild = $render(['kind' => 'media', 'label' => 'Bild', 'help' => ''], '');
        self::assertStringContainsString('data-media-field', $bild);
        self::assertStringContainsString('<input type="hidden" id="plugin-probe-ziel" name="settings[ziel]" value="">', $bild);
        self::assertStringNotContainsString('Kennung aus der Mediathek', $bild);
    }

    public function testStylePresetsNeedAnEditorRoleACsrfTokenAndAValidStyle(): void
    {
        $client = $this->login('editor');
        $client->request('GET', '/admin/api/design');
        self::assertResponseIsSuccessful();
        $design = json_decode($client->getResponse()->getContent(), true);
        // The editor receives the vocabulary, the palette and the presets from one place.
        self::assertArrayHasKey('fontSize', $design['properties']);
        self::assertSame([], $design['presets']);
        $token = $design['csrfToken'];

        $post = function (array $body, string $csrf) use ($client): void {
            $client->request('POST', '/admin/api/style-presets', server: ['CONTENT_TYPE' => 'application/json', 'HTTP_X_CSRF_TOKEN' => $csrf], content: json_encode($body));
        };
        $post(['name' => 'Heller Abschnitt', 'style' => ['desktop' => ['fontSize' => '32px']]], 'wrong');
        self::assertResponseStatusCodeSame(403);

        // A style the documents would refuse cannot arrive through a preset either.
        $post(['name' => 'Boese', 'style' => ['desktop' => ['fontSize' => '32px;position:fixed']]], $token);
        self::assertResponseStatusCodeSame(422);
        $post(['name' => '   ', 'style' => ['desktop' => ['fontSize' => '32px']]], $token);
        self::assertResponseStatusCodeSame(422);
        self::assertStringNotContainsString('position:fixed', (string) $this->db->fetchOne('SELECT theme FROM website WHERE id = ?', ['default']));

        $post(['name' => 'Heller Abschnitt', 'style' => ['desktop' => ['fontSize' => '32px', 'padding' => ['top' => '40px']]]], $token);
        self::assertResponseIsSuccessful();
        $presets = json_decode($client->getResponse()->getContent(), true)['presets'];
        self::assertSame('heller-abschnitt', $presets[0]['key']);
        self::assertSame('32px', $presets[0]['style']['desktop']['fontSize']);

        // Removing works by sending the same name without a style.
        $post(['name' => 'Heller Abschnitt', 'style' => null], $token);
        self::assertSame([], json_decode($client->getResponse()->getContent(), true)['presets']);
    }

    public function testMediaUploadReencodingCsrfMetadataConflictAndArchive(): void
    {
        $client = $this->login('editor');
        $client->request('GET', '/admin/api/media');
        self::assertResponseIsSuccessful();
        $token = json_decode($client->getResponse()->getContent(), true)['csrfToken'];
        $client->request('POST', '/admin/api/media/upload');
        self::assertResponseStatusCodeSame(403);
        $path = tempnam(sys_get_temp_dir(), 'kant-image-');
        try {
            file_put_contents($path, '<svg xmlns="http://www.w3.org/2000/svg"><script>alert(1)</script></svg>');
            $client->request('POST', '/admin/api/media/upload', files: ['file' => new UploadedFile($path, 'fake.jpg', test: true)], server: ['HTTP_X_CSRF_TOKEN' => $token]);
            self::assertResponseStatusCodeSame(422);
            self::assertSame(0, (int) $this->db->fetchOne('SELECT COUNT(*) FROM media'));
            $image = imagecreatetruecolor(1800, 1000);
            imagepng($image, $path);
            imagedestroy($image);
            file_put_contents($path, '<?php SECRET_SOURCE_PAYLOAD ?>', FILE_APPEND);
            $client->request('POST', '/admin/api/media/upload', files: ['file' => new UploadedFile($path, 'example.php', test: true)], server: ['HTTP_X_CSRF_TOKEN' => $token]);
            self::assertResponseStatusCodeSame(201);
            $item = json_decode($client->getResponse()->getContent(), true)['item'];
            // Four steps now; the last one is capped at the width of the source (1800 here), so a
            // picture is never blown up beyond what was uploaded.
            self::assertSame([480, 960, 1600, 1800], array_column($item['variants'], 'width'));
            foreach ($item['variants'] as $variant) {
                $file = $this->path.'-media/'.$item['id'].'-'.$variant['width'].'.webp';
                self::assertSame('image/webp', getimagesize($file)['mime']);
                self::assertStringNotContainsString('SECRET_SOURCE_PAYLOAD', file_get_contents($file));
            }
            $update = ['title' => 'Testbild', 'alt' => 'Dunkle Testfläche', 'version' => 1, 'archived' => true];
            $client->request('POST', '/admin/api/media/'.$item['id'], server: ['CONTENT_TYPE' => 'application/json', 'HTTP_X_CSRF_TOKEN' => $token], content: json_encode($update));
            self::assertResponseIsSuccessful();
            $client->request('POST', '/admin/api/media/'.$item['id'], server: ['CONTENT_TYPE' => 'application/json', 'HTTP_X_CSRF_TOKEN' => $token], content: json_encode($update));
            self::assertResponseStatusCodeSame(409);
            $client->request('GET', $item['variants'][0]['src']);
            self::assertResponseIsSuccessful();
            self::assertResponseHeaderSame('Content-Type', 'image/webp');
            self::assertResponseHeaderSame('X-Content-Type-Options', 'nosniff');
            $client->request('GET', '/media/'.$item['id'].'/999.webp');
            self::assertResponseStatusCodeSame(404);
            $update['version'] = 2;
            $update['archived'] = false;
            $client->request('POST', '/admin/api/media/'.$item['id'], server: ['CONTENT_TYPE' => 'application/json', 'HTTP_X_CSRF_TOKEN' => $token], content: json_encode($update));
            self::assertResponseIsSuccessful();
            self::assertSame(0, (int) $this->db->fetchOne('SELECT archived FROM media'));
        } finally {
            unlink($path);
        }
    }

    public function testPdfsGoThroughTheMediaUploadAndTheEditorPicker(): void
    {
        $client = $this->login('editor');
        $crawler = $client->request('GET', '/admin/media');
        $token = $crawler->filter('form[action="/admin/media/upload"] input[name="_csrf_token"]')->attr('value');
        $path = tempnam(sys_get_temp_dir(), 'kant-form-pdf-');
        try {
            file_put_contents($path, "%PDF-1.7\n%%EOF\n");
            // Dasselbe Feld wie für Bilder: der Inhalt entscheidet, wohin die Datei geht.
            $client->request('POST', '/admin/media/upload', ['_csrf_token' => $token], ['files' => [new UploadedFile($path, 'Flyer.pdf', test: true)]]);
            self::assertResponseRedirects('/admin/media');
            self::assertSame(0, (int) $this->db->fetchOne('SELECT COUNT(*) FROM media'));
            self::assertSame('Flyer', $this->db->fetchOne('SELECT title FROM document'));
            $crawler = $client->followRedirect();
            self::assertStringContainsString('1 Datei(en) hochgeladen', $crawler->filter('.notice.ok')->text());
            self::assertCount(1, $crawler->filter('section[aria-labelledby="documents-heading"] .row'));

            // Die Auswahl im Editor: Liste mit Token, Hochladen nur mit Token.
            $client->request('GET', '/admin/api/dokumente');
            self::assertResponseIsSuccessful();
            $data = json_decode($client->getResponse()->getContent(), true);
            self::assertSame('Flyer', $data['items'][0]['title']);
            $client->request('POST', '/admin/api/dokumente/upload', files: ['file' => new UploadedFile($path, 'zweites.pdf', test: true)]);
            self::assertResponseStatusCodeSame(403);
            file_put_contents($path, '<?php echo 1;');
            $client->request('POST', '/admin/api/dokumente/upload', files: ['file' => new UploadedFile($path, 'getarnt.pdf', test: true)], server: ['HTTP_X_CSRF_TOKEN' => $data['csrfToken']]);
            self::assertResponseStatusCodeSame(422);
            self::assertSame(1, (int) $this->db->fetchOne('SELECT COUNT(*) FROM document'));

            // Archivieren nimmt es aus der Auswahl-Übersicht, die Datei bleibt erreichbar.
            $id = $data['items'][0]['id'];
            $client->request('POST', '/admin/api/dokumente/'.$id, server: ['CONTENT_TYPE' => 'application/json', 'HTTP_X_CSRF_TOKEN' => $data['csrfToken']], content: json_encode(['title' => 'Flyer 2026', 'archived' => true, 'version' => 1]));
            self::assertResponseIsSuccessful();
            self::assertCount(0, $client->request('GET', '/admin/media')->filter('section[aria-labelledby="documents-heading"] .row'));
            $client->request('GET', '/media/'.$id.'.pdf');
            self::assertResponseIsSuccessful();
        } finally {
            unlink($path);
        }
    }

    public function testMediaPreviewReadsSmallAndArchivedImagesWithoutListingTheLibrary(): void
    {
        $id = str_repeat('a', 32);
        $this->db->insert('media', ['id' => $id, 'title' => 'Kleines Logo', 'alt' => 'Logo', 'variants' => json_encode([['src' => '/media/'.$id.'/192', 'width' => 192, 'height' => 64, 'bytes' => 1]]), 'archived' => 1, 'version' => 1, 'created_at' => gmdate('Y-m-d H:i:s')]);
        $client = $this->login('editor');
        $client->request('GET', '/admin/api/media/'.$id);
        self::assertResponseIsSuccessful();
        $data = json_decode($client->getResponse()->getContent(), true, 512, JSON_THROW_ON_ERROR);
        self::assertSame($id, $data['item']['id']);
        self::assertSame(192, $data['item']['variants'][0]['width']);
        self::assertTrue($data['item']['archived']);
        self::assertArrayNotHasKey('items', $data);
        $client->request('GET', '/admin/api/media/'.str_repeat('b', 32));
        self::assertResponseStatusCodeSame(404);
    }

    public function testTheMediaScreenUploadsAndEditsWithoutJavaScript(): void
    {
        $client = $this->login('editor');
        $crawler = $client->request('GET', '/admin/media');
        self::assertResponseIsSuccessful();
        // The images are on the page itself, not behind a button that opens a dialog.
        self::assertCount(0, $crawler->filter('.library-tile'));
        self::assertCount(1, $crawler->filter('form[action="/admin/media/upload"] input[type="file"]'));
        $token = $crawler->filter('form[action="/admin/media/upload"] input[name="_csrf_token"]')->attr('value');

        $path = tempnam(sys_get_temp_dir(), 'kant-form-image-');
        try {
            $image = imagecreatetruecolor(900, 600);
            imagepng($image, $path);
            imagedestroy($image);

            $client->request('POST', '/admin/media/upload', ['_csrf_token' => 'wrong'], ['files' => [new UploadedFile($path, 'ohne-token.png', test: true)]]);
            self::assertResponseRedirects('/admin/media');
            self::assertSame(0, (int) $this->db->fetchOne('SELECT COUNT(*) FROM media'));

            // Two files in one submit, the way the drop area collects them.
            $client->request('POST', '/admin/media/upload', ['_csrf_token' => $token], ['files' => [
                new UploadedFile($path, 'erstes.png', test: true),
                new UploadedFile($path, 'zweites.png', test: true),
            ]]);
            self::assertResponseRedirects('/admin/media');
            self::assertSame(2, (int) $this->db->fetchOne('SELECT COUNT(*) FROM media'));

            $crawler = $client->followRedirect();
            self::assertCount(2, $crawler->filter('.library-tile'));
            self::assertCount(1, $crawler->filter('.notice.ok'));
            self::assertStringContainsString('2 Datei(en) hochgeladen', $crawler->filter('.notice.ok')->text());

            $id = (string) $this->db->fetchOne('SELECT id FROM media LIMIT 1');
            $client->request('POST', '/admin/media/'.$id, ['_csrf_token' => $token, 'title' => 'Bergblick', 'alt' => 'Grüne Berglandschaft', 'archived' => '1', 'version' => 1]);
            self::assertResponseRedirects('/admin/media');
            self::assertSame(['Bergblick', 'Grüne Berglandschaft', 1], array_values($this->db->fetchNumeric('SELECT title, alt, archived FROM media WHERE id = ?', [$id])));

            // An archived image is out of the default listing but still delivered, and the archive
            // view shows it again.
            self::assertCount(1, $client->request('GET', '/admin/media')->filter('.library-tile'));
            self::assertCount(2, $client->request('GET', '/admin/media?archiv=1')->filter('.library-tile'));

            // A second save with the same version is refused instead of overwriting the newer one.
            $client->request('POST', '/admin/media/'.$id, ['_csrf_token' => $token, 'title' => 'Nochmal', 'alt' => '', 'version' => 1]);
            self::assertResponseRedirects('/admin/media');
            self::assertSame('Bergblick', $this->db->fetchOne('SELECT title FROM media WHERE id = ?', [$id]));
            self::assertCount(1, $client->followRedirect()->filter('.notice.error:not([hidden])'));
        } finally {
            unlink($path);
        }
    }

    public function testTheMediaScreenPaginatesAndKeepsTheRequestedPageAfterASave(): void
    {
        $client = $this->login('editor');
        for ($number = 1; $number <= 26; ++$number) {
            $this->db->insert('media', [
                'id' => str_pad((string) $number, 32, '0', STR_PAD_LEFT),
                'title' => 'Bild '.$number,
                'alt' => '',
                'variants' => json_encode([['src' => '/media/x/480', 'width' => 480, 'height' => 320, 'bytes' => 1]]),
                'archived' => 0,
                'version' => 1,
                // Ascending dates, so "newest first" puts number 26 on the first page.
                'created_at' => gmdate('Y-m-d H:i:s', strtotime('2026-09-01 00:00:00') + $number * 60),
            ]);
        }
        $first = $client->request('GET', '/admin/media');
        self::assertCount(MediaLibrary::PER_PAGE, $first->filter('.library-tile'));
        self::assertStringContainsString('Bild 26', $first->filter('.library-tile')->first()->text());
        self::assertCount(1, $first->filter('.pager a[rel="next"]'));
        self::assertCount(0, $first->filter('.pager a[rel="prev"]'));

        $second = $client->request('GET', '/admin/media?seite=2');
        self::assertCount(2, $second->filter('.library-tile'));
        self::assertStringContainsString('Bild 2', $second->filter('.library-tile')->first()->text());
        // A page beyond the end is clamped instead of showing an empty screen.
        self::assertCount(2, $client->request('GET', '/admin/media?seite=99')->filter('.library-tile'));

        // Saving from page two comes back to page two.
        $token = $second->filter('form[action^="/admin/media/000"] input[name="_csrf_token"]')->first()->attr('value');
        $id = str_pad('2', 32, '0', STR_PAD_LEFT);
        $client->request('POST', '/admin/media/'.$id, ['_csrf_token' => $token, 'title' => 'Umbenannt', 'alt' => '', 'version' => 1, 'seite' => 2]);
        self::assertResponseRedirects('/admin/media?seite=2');
    }

    public function testMediaLiveSearchCoversAllPagesAltTextArchiveAndLiteralWildcards(): void
    {
        $client = $this->login('editor');
        for ($number = 1; $number <= 27; ++$number) {
            $this->db->insert('media', [
                'id' => str_pad((string) $number, 32, '0', STR_PAD_LEFT),
                'title' => 1 === $number ? 'Seltenes Motiv 100%_!' : 'Bild '.$number,
                'alt' => 2 === $number ? 'Einzigartiger Alternativtext Äußerer Bereich' : '',
                'variants' => json_encode([['src' => '/media/x/480', 'width' => 480, 'height' => 320, 'bytes' => 1]]),
                'archived' => 27 === $number ? 1 : 0,
                'version' => 1,
                'created_at' => gmdate('Y-m-d H:i:s', 1700000000 + $number),
            ]);
        }
        foreach ([['SELTENES', false, 1], ['ALTERNATIVTEXT', false, 1], ['äußerer', false, 1], ['%_!', false, 1], ['Bild', false, 25], ['Bild', true, 26], ['fehlt', false, 0]] as [$query, $archived, $total]) {
            $parameters = ['q' => $query, 'archiv' => $archived ? 1 : 0, 'seite' => 99];
            $client->request('GET', '/admin/media?'.http_build_query($parameters), server: ['HTTP_X_REQUESTED_WITH' => 'XMLHttpRequest']);
            self::assertResponseIsSuccessful();
            $data = json_decode($client->getResponse()->getContent(), true, 512, JSON_THROW_ON_ERROR);
            self::assertSame($total, $data['total'], $query);
            self::assertSame($total > 24 ? 2 : 1, $data['parameters']['seite']);
            self::assertStringNotContainsString('<html', $data['html']);
        }
        // The HTML fallback uses the same global search, and saving retains its context.
        $crawler = $client->request('GET', '/admin/media?q=Seltenes');
        self::assertCount(1, $crawler->filter('.library-tile'));
        $form = $crawler->filter('.library-tile form')->form(['alt' => 'Geändert']);
        $client->submit($form);
        self::assertResponseRedirects('/admin/media?q=Seltenes');
        self::assertCount(1, $client->followRedirect()->filter('.library-tile'));
        $crawler = $client->request('GET', '/admin/media?q=0');
        $client->submit($crawler->filter('.library-tile form')->first()->form(['alt' => 'Ziffernsuche']));
        self::assertResponseRedirects('/admin/media?q=0');
    }

    public function testLegalPagesCanBeCreatedWithoutInjectingFooterLinks(): void
    {
        $client = $this->login('publisher');
        $crawler = $client->request('GET', '/admin/settings');
        // As long as they are missing, the settings screen says so instead of hiding it.
        self::assertCount(1, $crawler->filter('form[action="/admin/settings/rechtliches"]'));
        self::assertStringContainsString('Pflichtseiten fehlen', $crawler->filter('.card-head')->first()->text());
        $token = $crawler->filter('form[action="/admin/settings/rechtliches"] input[name="_csrf_token"]')->attr('value');

        $client->request('POST', '/admin/settings/rechtliches', ['_csrf_token' => 'wrong']);
        self::assertSame(0, (int) $this->db->fetchOne('SELECT COUNT(*) FROM page WHERE path IN (?, ?)', ['datenschutz', 'impressum']));

        $client->request('POST', '/admin/settings/rechtliches', ['_csrf_token' => $token]);
        self::assertResponseRedirects('/admin/settings');

        // Both pages exist, are published, and the settings point at them.
        foreach (['datenschutz' => 'Datenschutzerklärung', 'impressum' => 'Impressum'] as $path => $title) {
            $row = $this->db->fetchAssociative('SELECT id, published_revision_id FROM page WHERE path = ?', [$path]);
            self::assertNotFalse($row, $path);
            self::assertNotNull($row['published_revision_id'], $path.' must be published: an unpublished imprint is no imprint.');
            $client->request('GET', '/'.$path);
            self::assertResponseIsSuccessful();
            self::assertStringContainsString($title, $client->getResponse()->getContent());
            // The skeleton says plainly that it is not finished.
            self::assertStringContainsString('NOCH AUSZUFÜLLEN', $client->getResponse()->getContent());
        }

        // Creating the pages does not alter the author's footer or append a link bar.
        $client->request('GET', '/');
        $content = $client->getResponse()->getContent();
        self::assertStringNotContainsString('<a href="/datenschutz">Datenschutz</a>', $content);
        self::assertStringNotContainsString('<a href="/impressum">Impressum</a>', $content);

        // Running it twice keeps the existing pages: they may already carry the real text.
        $before = $this->db->fetchOne('SELECT COUNT(*) FROM revision');
        $client->request('POST', '/admin/settings/rechtliches', ['_csrf_token' => $token]);
        self::assertSame($before, $this->db->fetchOne('SELECT COUNT(*) FROM revision'));
        self::assertSame(2, (int) $this->db->fetchOne('SELECT COUNT(*) FROM page WHERE path IN (?, ?)', ['datenschutz', 'impressum']));
    }

    public function testTheStatisticsScreenNeedsASignInAndShowsWhatWasCounted(): void
    {
        $client = $this->login('editor');
        // Two page views and one missing address, counted through real requests.
        $client->request('GET', '/');
        $client->request('GET', '/');
        $client->request('GET', '/gibt-es-nicht');

        $crawler = $client->request('GET', '/admin/statistik');
        self::assertResponseIsSuccessful();
        self::assertStringContainsString('2', $crawler->filter('.card-head .count')->first()->text());
        // All three charts - days, hours and weekdays - are drawn by the server, so they are in
        // the markup and need no script.
        self::assertCount(3, $crawler->filter('svg.chart[role="img"]'));
        // Jeder Balken sagt beim Ueberfahren, wofuer er steht - auch das ohne Skript.
        self::assertStringContainsString('2 Aufrufe', $crawler->filter('svg.chart-days rect title')->last()->text());
        self::assertSame('2', trim($crawler->filter('.stat-tile-main .stat-value')->text()), 'Die Hauptkachel traegt die Summe.');
        self::assertSame('1', trim($crawler->filter('.stat-tile')->last()->filter('.stat-value')->text()), 'Die letzte Kachel zaehlt die nicht gefundene Adresse.');
        self::assertCount(0, $crawler->filter('svg [style]'), 'Inline styles are forbidden by the policy.');
        self::assertStringContainsString('/gibt-es-nicht', $crawler->filter('.stats-list')->last()->text());
        // And it says what it cannot answer.
        self::assertStringContainsString('nicht Besucher', $crawler->filter('.card-body')->last()->text());

        $client->request('GET', '/admin/statistik.csv?tage=7');
        self::assertResponseIsSuccessful();
        self::assertStringContainsString('text/csv', (string) $client->getResponse()->headers->get('Content-Type'));
        self::assertStringContainsString('attachment; filename="kantsites-statistik-7-tage.csv"', (string) $client->getResponse()->headers->get('Content-Disposition'));
        // The browser has already streamed the body once; the captured copy is the internal one.
        $csv = (string) $client->getInternalResponse()->getContent();
        self::assertStringContainsString('tag;stunde;pfad;status;verweis-domain;anzahl', $csv);
        self::assertStringContainsString(';/;200;;2', $csv);
    }

    public function testPasswordUpgradeRefreshesTheSessionUser(): void
    {
        $provider = new UserProvider($this->db);
        $user = $provider->loadUserByIdentifier('admin');
        $hash = password_hash('Fixture-only-password', PASSWORD_BCRYPT, ['cost' => 5]);
        $provider->upgradePassword($user, $hash);
        self::assertSame($hash, $user->getPassword());
        self::assertSame($hash, $provider->refreshUser($user)->getPassword());
    }

    public function testChangedRolesInvalidateAnExistingSession(): void
    {
        $client = $this->login();
        $this->db->executeStatement('UPDATE cms_user SET roles = ? WHERE username = ?', ['["ROLE_EDITOR"]', 'admin']);
        $client->request('GET', '/admin/api/pages/p1');
        self::assertResponseRedirects('http://localhost/admin/login');
    }

    public function testLoginCsrfAndPasswordAreRequired(): void
    {
        $client = self::createClient();
        $client->request('POST', '/admin/login', ['_username' => 'admin', '_password' => 'Fixture-only-password']);
        self::assertResponseRedirects('/admin/login');
        $crawler = $client->followRedirect();
        self::assertSelectorExists('[role="alert"]');
        $client->submit($crawler->selectButton('Anmelden')->form(['_username' => 'admin', '_password' => 'wrong']));
        self::assertResponseRedirects('/admin/login');
        $client->request('GET', '/admin');
        self::assertResponseRedirects('http://localhost/admin/login');
    }

    public function testCsrfProtectsEveryPostAndMalformedBodyIsRejected(): void
    {
        $client = $this->login();
        $data = $this->data($client);
        foreach (['draft', 'publish', 'preview'] as $action) {
            $this->post($client, $action, ['document' => $data['document'], 'expectedVersion' => $data['version'], 'revisionId' => $data['revisionId']], 'invalid');
            self::assertResponseStatusCodeSame(403);
        }
        $this->post($client, 'draft', ['document' => $data['document'], 'expectedVersion' => '2'], $data['csrfToken']);
        self::assertResponseStatusCodeSame(422);
        $client->request('POST', '/admin/api/pages/p1/draft', server: ['CONTENT_TYPE' => 'application/json', 'HTTP_X_CSRF_TOKEN' => $data['csrfToken']], content: '{bad-json');
        self::assertResponseStatusCodeSame(422);
        self::assertSame(1, (int) $this->db->fetchOne('SELECT COUNT(*) FROM revision'));
    }

    public function testEditorCanSaveButCannotPublish(): void
    {
        $client = $this->login('editor');
        $data = $this->data($client);
        $data['document']['title'] = 'Private draft';
        $this->post($client, 'draft', ['document' => $data['document'], 'expectedVersion' => 2], $data['csrfToken']);
        self::assertResponseIsSuccessful();
        $saved = json_decode($client->getResponse()->getContent(), true);
        $this->post($client, 'publish', ['expectedVersion' => 3, 'revisionId' => $saved['revisionId']], $data['csrfToken']);
        self::assertResponseStatusCodeSame(403);
        $client->request('GET', '/');
        self::assertStringNotContainsString('Private draft', $client->getResponse()->getContent());
    }

    public function testPreviewSaveConflictAndPublishRoundTrip(): void
    {
        $client = $this->login();
        $data = $this->data($client);
        $document = $data['document'];
        $document['blocks'][0]['children'][1]['props']['text'] = 'An edited heading';
        $this->post($client, 'preview', ['document' => $document], $data['csrfToken']);
        self::assertResponseIsSuccessful();
        self::assertStringContainsString('An edited heading', $client->getResponse()->getContent());
        self::assertStringContainsString('no-store', $client->getResponse()->headers->get('Cache-Control'));
        self::assertStringContainsString('noindex', $client->getResponse()->headers->get('X-Robots-Tag'));
        $this->post($client, 'draft', ['document' => $document, 'expectedVersion' => 2], $data['csrfToken']);
        self::assertResponseIsSuccessful();
        $saved = json_decode($client->getResponse()->getContent(), true);
        self::assertSame($document, $saved['document']);
        self::assertSame(3, $saved['version']);
        $this->post($client, 'draft', ['document' => $data['document'], 'expectedVersion' => 2], $data['csrfToken']);
        self::assertResponseStatusCodeSame(409);
        $this->post($client, 'publish', ['expectedVersion' => 3, 'revisionId' => $data['revisionId']], $data['csrfToken']);
        self::assertResponseStatusCodeSame(409);
        $this->post($client, 'publish', ['expectedVersion' => 3, 'revisionId' => $saved['revisionId']], $data['csrfToken']);
        self::assertResponseIsSuccessful();
        $client->request('GET', '/');
        self::assertStringContainsString('An edited heading', $client->getResponse()->getContent());
        self::assertStringNotContainsString('editor.js', $client->getResponse()->getContent());
        self::assertFalse($client->getResponse()->headers->has('Set-Cookie'));
    }

    public function testLogoutInvalidatesSessionAndNeedsCsrf(): void
    {
        $client = $this->login();
        $client->request('POST', '/admin/logout', ['_csrf_token' => 'wrong']);
        self::assertResponseStatusCodeSame(403);
        $crawler = $client->request('GET', '/admin');
        $client->submit($crawler->selectButton('Abmelden')->form());
        self::assertResponseRedirects('/admin/login');
        $client->request('GET', '/admin');
        self::assertResponseRedirects('http://localhost/admin/login');
    }
}