import { chromium } from 'playwright';
import AxeBuilder from '@axe-core/playwright';
import assert from 'node:assert/strict';
import { mkdir, writeFile } from 'node:fs/promises';
import { spawn, execFileSync } from 'node:child_process';
import { randomBytes } from 'node:crypto';
import net from 'node:net';

const php = process.env.PHP_BINARY || 'php';
execFileSync(php, ['bin/console', 'cache:clear', '--env=prod', '--no-debug'], { stdio: 'ignore' });
const fixture = JSON.parse(execFileSync(php, ['tests/browser-fixture.php'], { encoding: 'utf8' }));
const probe = net.createServer();
await new Promise(resolve => probe.listen(0, '127.0.0.1', resolve));
const port = probe.address().port;
await new Promise(resolve => probe.close(resolve));
const origin = `http://127.0.0.1:${port}`;
const server = spawn(php, ['-d', 'upload_max_filesize=8M', '-d', 'post_max_size=10M', '-d', 'memory_limit=256M', '-S', `127.0.0.1:${port}`, '-t', 'public'], {
  windowsHide: true,
  env: { ...process.env, APP_ENV: 'prod', APP_DEBUG: '0', APP_SECRET: randomBytes(32).toString('hex'), DATABASE_URL: fixture.databaseUrl, MEDIA_DIRECTORY: fixture.mediaDirectory, SITE_ORIGIN: origin },
  stdio: 'ignore',
});
server.on('error', error => { throw error; });
let browser;
let activePage;
await mkdir('reports/editor', { recursive: true });
const checks = [];
try {
  for (let i = 0; i < 60; i++) {
    try { if ((await fetch(origin)).ok) break; } catch {}
    if (i === 59) throw new Error('Isolated PHP server did not start.');
    await new Promise(resolve => setTimeout(resolve, 200));
  }
  browser = await chromium.launch();
  const context = await browser.newContext({ viewport: { width: 1600, height: 1100 }, acceptDownloads: true });
  context.setDefaultTimeout(15000);
  const page = await context.newPage();
  activePage = page;
  const errors = [];
  page.on('pageerror', error => { errors.push(error.message); console.error('Editor script error:', error.message); });
  page.on('console', message => { if (message.type() === 'error' && /Content Security Policy/.test(message.text())) errors.push(message.text()); });
  page.on('dialog', dialog => dialog.accept());
  const axe = async name => {
    console.log('Accessibility check:', name);
    // The no-script preview sandbox cannot host axe's frame worker. Audit the identical
    // published renderer separately; retain the sandbox in the real editor.
    const result = await new AxeBuilder({ page }).exclude('#preview').withTags(['wcag2a', 'wcag2aa', 'wcag21aa', 'best-practice']).analyze();
    assert.deepEqual(result.violations.map(v => ({ id: v.id, nodes: v.nodes.map(n => n.target) })), [], name);
    checks.push({ name, violations: 0 });
  };
  await page.goto(origin + '/admin');
  assert.equal(new URL(page.url()).pathname, '/admin/login');
  await axe('login');
  await page.screenshot({ path: 'reports/editor/login.png', fullPage: true });
  await page.getByLabel('Benutzername').fill(fixture.username);
  await page.getByLabel('Passwort', { exact: true }).fill(fixture.password);
  await page.getByRole('button', { name: 'Anmelden', exact: true }).click();
  await page.waitForURL(origin + '/admin');
  console.log('Authenticated in isolated test installation.');
  await axe('page list');
  await page.screenshot({ path: 'reports/editor/pages.png', fullPage: true });
  await page.locator('a[href="/admin/pages/test-home"]').first().click();
  await page.locator('#save-status').filter({ hasText: 'Veröffentlicht' }).waitFor();
  console.log('Editor data loaded.');
  console.log('Preview status:', await page.locator('#preview-status').innerText());
  const frame = page.frameLocator('#preview');
  await frame.locator('h1').waitFor();
  await page.locator('#preview-status').filter({ hasText: 'Entwurf ·' }).waitFor();
  await frame.locator('h1').click();
  assert.equal(await page.locator('#properties-title').innerText(), 'Überschrift');
  await page.getByLabel('Text', { exact: true }).fill('Meine bearbeitete Website');
  await frame.getByRole('heading', { name: 'Meine bearbeitete Website', exact: true }).waitFor();
  assert.equal(await page.locator('#publish').isDisabled(), true);
  await page.getByRole('button', { name: 'Rückgängig', exact: true }).click();
  await frame.getByRole('heading', { name: /Deine Inhalte/, level: 1 }).waitFor();
  await page.getByRole('button', { name: 'Wiederholen', exact: true }).click();
  await frame.getByRole('heading', { name: 'Meine bearbeitete Website', exact: true }).waitFor();
  checks.push({ name: 'preview selection, property edit, undo and redo', passed: true });

  // --- Die Vorschau als Arbeitsflaeche -------------------------------------------------------
  // Rahmen, Werkzeugleiste am Element, Einfuegepunkte und Ziehen aus dem Werkzeugkasten.
  const inPreview = selector => page.evaluate(
    sel => document.querySelector('#preview').contentDocument?.querySelector(sel)?.id ?? null, selector);
  await frame.locator('h1').click();
  await page.locator('.ov-select').waitFor({ state: 'visible' });
  assert.equal(await page.locator('.ov-toolbar-name').innerText(), 'Überschrift');
  await page.getByRole('toolbar', { name: 'Aktionen für das gewählte Element' }).waitFor();
  // Die Leiste benennt das Element, auf das sie wirkt - sonst haette sie denselben Namen wie
  // die gleichnamige Schaltflaeche in der Seitenleiste.
  await page.getByRole('button', { name: 'Überschrift duplizieren', exact: true }).waitFor();
  await page.getByRole('button', { name: 'Element über Überschrift auswählen', exact: true }).click();
  assert.notEqual(await page.locator('#properties-title').innerText(), 'Überschrift');

  // Einfuegepunkt: das naechste Element landet genau dort und nicht am Ende.
  await frame.locator('h1').click();
  const headingId = await inPreview('h1');
  await page.getByRole('button', { name: 'Element dahinter einfügen', exact: true }).click();
  await page.locator('#insert-hint').waitFor({ state: 'visible' });
  await page.locator('#library button[data-add="text"]').click();
  assert.equal(await page.locator('#properties-title').innerText(), 'Text');
  assert.equal(await page.locator('#insert-hint').isVisible(), false);
  await page.waitForFunction(id => {
    const next = document.querySelector('#preview').contentDocument?.querySelector(`#${id}`)?.nextElementSibling;
    return Boolean(next?.classList.contains('block-text'));
  }, headingId);
  await page.getByRole('button', { name: 'Rückgängig', exact: true }).click();

  // Ziehen aus dem Werkzeugkasten auf die Seite.
  await frame.locator('h1').waitFor();
  const beforeButtons = await page.locator('#structure [data-block-id]').count();
  await page.locator('#library button[data-add="button"]').dragTo(frame.locator('h1'), { targetPosition: { x: 12, y: 4 } });
  await page.waitForFunction(count => document.querySelectorAll('#structure [data-block-id]').length === count + 1, beforeButtons);
  assert.equal(await page.locator('#properties-title').innerText(), 'Button');
  // Oben abgelegt heisst davor, nicht dahinter.
  await page.waitForFunction(id => {
    const previous = document.querySelector('#preview').contentDocument?.querySelector(`#${id}`)?.previousElementSibling;
    return Boolean(previous?.classList.contains('button'));
  }, headingId);
  await page.getByRole('button', { name: 'Rückgängig', exact: true }).click();
  await page.waitForFunction(count => document.querySelectorAll('#structure [data-block-id]').length === count, beforeButtons);
  checks.push({ name: 'canvas toolbar, insert points and drag from the toolbox', passed: true });
  await page.screenshot({ path: 'reports/editor/canvas-overlay.png' });
  // --- Der Werkzeugkasten kennt den Zusammenhang ---------------------------------------------
  // Eine Zeile kommt nicht aus dem Nichts, und eine Spalte gehoert in eine Zeile.
  const toolboxState = type => page.evaluate(selector => {
    const button = document.querySelector(selector);
    return button ? { disabled: button.disabled, title: button.title } : null;
  }, `#library button[data-add="${type}"]:not([data-row])`);
  const rowState = () => page.evaluate(() => {
    const button = document.querySelector('#library button[data-row="2"]');
    return { disabled: button.disabled, title: button.title };
  });

  await page.locator('#select-page').click();
  assert.equal((await toolboxState('column')).disabled, true, 'Spalte ohne Zeile gesperrt');
  assert.match((await toolboxState('column')).title, /gehört in Zeile/);
  assert.equal((await rowState()).disabled, true, 'Zeile ohne Sektion gesperrt');
  assert.match((await rowState()).title, /gehört in eine Sektion/);
  assert.equal((await toolboxState('section')).disabled, false, 'Sektion geht immer');

  // In einer Sektion wird die Zeile moeglich, die Spalte noch nicht. Die Sektion kommt aus dem
  // Strukturbaum, nicht aus der Vorschau: dort steht auch der Kopfbereich, und der gehoert
  // einem anderen Dokument.
  await page.locator('#structure .tree-item').filter({ hasText: 'Sektion' }).first().click();
  assert.equal(await page.locator('#properties-title').innerText(), 'Sektion');
  assert.equal((await rowState()).disabled, false, 'Zeile in der Sektion moeglich');
  assert.equal((await toolboxState('column')).disabled, true, 'Spalte in der Sektion weiterhin gesperrt');

  // Und in der Zeile wird die Spalte moeglich.
  const columnsBefore = await page.locator('#structure .tree-item').filter({ hasText: 'Spalte' }).count();
  await page.locator('#library button[data-row="3"]').click();
  assert.equal(await page.locator('#properties-title').innerText(), 'Zeile');
  assert.equal((await toolboxState('column')).disabled, false, 'Spalte in der Zeile moeglich');
  assert.match((await toolboxState('column')).title, /Wird in Zeile eingefügt/);
  // Die Zeile bringt ihre drei Spalten mit. Die Testseite hat schon welche, also zaehlt die
  // Differenz.
  assert.equal(await page.locator('#structure .tree-item').filter({ hasText: 'Spalte' }).count(), columnsBefore + 3);
  await page.getByRole('button', { name: 'Rückgängig', exact: true }).click();
  checks.push({ name: 'the toolbox follows the structure', passed: true });
  await page.screenshot({ path: 'reports/editor/toolbox.png' });
  console.log('Context aware toolbox passed.');

  // Zurueck in den Zustand, den dieser Abschnitt vorgefunden hat: die folgenden Pruefungen
  // setzen eine bestehende Auswahl voraus.
  await frame.getByRole('heading', { name: 'Meine bearbeitete Website', exact: true }).click();
  await page.locator('#duplicate:not([disabled])').waitFor();
  console.log('Canvas overlay, insert points and drag and drop passed.');

  // Die Vorschau darf nie sichtbar sein, solange ihre Gestaltung fehlt. Vorher hing das Anwenden
  // am Ladeereignis des Rahmens - und das feuert erst, wenn das letzte Bild geladen ist. Auf der
  // nachgebauten Startseite von kant-it.de stand die Vorschau dadurch 1440 ms lang mit falschen
  // Farben da: schwarze Knöpfe statt roter.
  const beobachtung = page.evaluate(async () => {
    const rahmen = document.getElementById('preview');
    const verlauf = [];
    let ungestylt = 0;
    // Zweierlei wird festgehalten: dass der Rahmen ueberhaupt verdeckt wird, waehrend das neue
    // Dokument entsteht - und ob er je sichtbar war, ohne seine Gestaltung zu haben.
    new MutationObserver(() => verlauf.push(rahmen.style.visibility || 'sichtbar'))
      .observe(rahmen, { attributes: true, attributeFilter: ['style'] });
    const bis = performance.now() + 5000;
    while (performance.now() < bis) {
      const doc = rahmen.contentDocument;
      if ('visible' === getComputedStyle(rahmen).visibility
          && doc?.getElementById('kant-styles')
          && 0 === (doc.adoptedStyleSheets ?? []).length) {
        ungestylt++;
      }
      await new Promise(r => setTimeout(r, 30));
    }
    return { verlauf, ungestylt };
  });
  await page.click('#duplicate');
  const { verlauf, ungestylt } = await beobachtung;
  assert.equal(ungestylt, 0, 'Die Vorschau war sichtbar, bevor ihre Gestaltung angewandt war.');
  // Der Rahmen muss verdeckt worden und danach wieder sichtbar geworden sein. Ohne diese Prüfung
  // hinge der Nachweis am Zufall: auf einer kleinen Seite ist das Fenster zu kurz, um es zu
  // treffen - auf der nachgebauten Startseite von kant-it.de war es 1440 ms lang.
  assert.ok(verlauf.includes('hidden'), 'Die Vorschau wird beim Aufbau nicht verdeckt.');
  assert.equal(verlauf[verlauf.length - 1], 'sichtbar', 'Die Vorschau bleibt verdeckt.');
  await page.click('#undo');
  await page.locator('#preview-status').filter({ hasText: 'Entwurf ·' }).waitFor();
  checks.push({ name: 'preview never shows unstyled content', passed: true });
  console.log('Preview edits and history passed.');

  await page.getByRole('button', { name: 'Einklappen', exact: true }).click();
  assert.equal(await page.locator('#structure .tree-item').count(), 3);
  await page.getByLabel('Element suchen', { exact: true }).fill('Meine bearbeitete');
  assert.equal(await page.locator('#structure .tree-item').count(), 2);
  await page.locator('#structure [data-block-id="headline"]').focus();
  await page.keyboard.press('Enter');
  await page.getByLabel('Element suchen', { exact: true }).fill('');
  assert.equal(await page.locator('#structure [data-block-id="headline"]').isVisible(), true);
  await page.getByRole('button', { name: 'Alle öffnen', exact: true }).click();
  await page.getByRole('button', { name: 'Design', exact: true }).click();

  const frameValue = async (selector, property, expected) => {
    await page.waitForFunction(({ selector, property, expected }) => {
      const doc = document.querySelector('#preview').contentDocument;
      const element = doc?.querySelector(selector);
      return element && doc.defaultView.getComputedStyle(element)[property] === expected;
    }, { selector, property, expected });
  };
  // Free values: a number plus a unit, not a fixed list. Filling and blurring fires the change.
  const setLength = async (id, value, unit = 'px') => {
    await page.locator(`#${id}`).fill(String(value));
    await page.locator(`#${id}`).blur();
    if (unit !== 'px') await page.locator(`#${id}`).locator('xpath=following-sibling::select').selectOption(unit);
  };
  const openGroup = async name => {
    const group = page.locator('.design-group').filter({ has: page.locator('summary', { hasText: name }) });
    if (!(await group.first().evaluate(element => element.open))) await group.first().locator('summary').click();
  };

  await setLength('style-fontSize', 72);
  await frameValue('#headline', 'fontSize', '72px');
  assert.equal(await page.locator('#preview').evaluate(element => element.contentWindow.innerWidth), 1240);

  // Tablet and mobile inherit until they get an own value, and a reset makes them inherit again.
  await page.getByRole('button', { name: 'Tablet', exact: true }).click();
  await frameValue('#headline', 'fontSize', '72px');
  await setLength('style-fontSize', 52);
  await frameValue('#headline', 'fontSize', '52px');
  await page.getByRole('button', { name: 'Mobil', exact: true }).click();
  await frameValue('#headline', 'fontSize', '52px');
  await setLength('style-fontSize', 36);
  await frameValue('#headline', 'fontSize', '36px');
  await page.getByRole('button', { name: 'Mobil zurücksetzen', exact: true }).click();
  await frameValue('#headline', 'fontSize', '52px');
  await page.getByRole('button', { name: 'Rückgängig', exact: true }).click();
  await frameValue('#headline', 'fontSize', '36px');

  // A single value can be reset on its own, without touching the rest of the device.
  await page.getByLabel('Ausrichtung', { exact: true }).selectOption('center');
  await frameValue('#headline', 'textAlign', 'center');
  await page.getByRole('button', { name: 'Ausrichtung zurücksetzen', exact: true }).click();
  await frameValue('#headline', 'textAlign', 'start');
  await page.getByRole('button', { name: 'Desktop', exact: true }).click();
  await frameValue('#headline', 'fontSize', '72px');

  // Colours: a palette reference resolves to the theme variable, a hex value is taken as it is.
  await page.locator('#style-color').locator('xpath=following-sibling::select').selectOption('@link');
  await frameValue('#headline', 'color', 'rgb(164, 81, 15)');
  const contrast = page.locator('.contrast-note');
  await contrast.waitFor();
  assert.match(await contrast.textContent(), /Kontrast \d/, 'The panel reports a contrast ratio.');

  // Per side spacing on the section, and a hover rule that also covers keyboard focus.
  await page.locator('#structure [data-block-id="hero"]').click();
  await page.getByRole('button', { name: 'Design', exact: true }).click();
  await setLength('style-padding-top', 96);
  await frameValue('#hero', 'paddingTop', '96px');
  await page.getByRole('button', { name: 'Mobil', exact: true }).click();
  await setLength('style-padding-top', 32);
  await frameValue('#hero', 'paddingTop', '32px');
  await page.getByRole('button', { name: 'Desktop', exact: true }).click();
  // The background group is collapsed by default, and the readable field next to the swatch is
  // what a person types into.
  await openGroup('Hintergrund');
  const hoverColor = page.locator('#style-backgroundColor-hover').locator('xpath=following-sibling::input[contains(@class,"color-text")]');
  await hoverColor.fill('#112233');
  await hoverColor.blur();
  // The preview carries its stylesheet as template text, applied by the editor as a constructed
  // stylesheet; the hover rule has to arrive through that path, not as a style element.
  await page.waitForFunction(() => {
    const doc = document.querySelector('#preview').contentDocument;
    const template = doc?.getElementById('kant-styles')?.content.textContent ?? '';
    const adopted = [...(doc?.adoptedStyleSheets ?? [])].some(sheet => [...sheet.cssRules].some(rule => rule.selectorText?.includes('#hero:hover')));
    return template.includes('#hero:hover,#hero:focus-within') && adopted;
  });
  checks.push({ name: 'free styles: units, inheritance, single reset, palette colour, per-side spacing, hover rule', passed: true });

  await page.locator('[data-preset="columns"]').click();
  const presetSection = await page.locator('#structure .tree-item[aria-pressed="true"]').getAttribute('data-block-id');
  const presetRow = `#${presetSection} .block-row`;
  await frame.locator(presetRow).waitFor();
  // The preset carries its own responsive tokens: one column on mobile, two from tablet up.
  await page.getByRole('button', { name: 'Mobil', exact: true }).click();
  const columnCount = async expected => {
    await page.waitForFunction(({ selector, expected }) => {
      const doc = document.querySelector('#preview').contentDocument;
      const element = doc?.querySelector(selector);
      return element && doc.defaultView.getComputedStyle(element).gridTemplateColumns.split(' ').length === expected;
    }, { selector: presetRow, expected });
  };
  await columnCount(1);
  await page.getByRole('button', { name: 'Desktop', exact: true }).click();
  await columnCount(2);
  await page.getByRole('button', { name: 'Rückgängig', exact: true }).click();
  await frame.locator(presetRow).waitFor({ state: 'detached' });
  await page.getByRole('button', { name: 'Wiederholen', exact: true }).click();
  await columnCount(2);
  await page.locator('#structure [data-block-id="headline"]').click();
  await page.getByRole('button', { name: 'Inhalt', exact: true }).click();
  checks.push({ name: 'keyboard tree search and collapse, responsive inheritance/reset/undo, true viewport widths, spacing and responsive section preset', passed: true });
  console.log('Responsive design, tree tools and presets passed.');

  await page.locator('#library [data-add="gallery"]').click();
  const galleryId = await page.locator('#structure .tree-item[aria-pressed="true"]').getAttribute('data-block-id');
  await page.getByRole('button', { name: 'Galeriebilder auswählen', exact: true }).click();
  await page.locator('#media-status').filter({ hasText: '0 Bilder' }).waitFor();
  await page.locator('#media-upload').setInputFiles(fixture.images);
  await page.locator('#media-status').filter({ hasText: '2 Bilder' }).waitFor();
  const mediaItems = (await (await context.request.get(origin + '/admin/api/media')).json()).items;
  const mediaResponse = await context.request.get(origin + mediaItems[0].variants[0].src);
  assert.equal(mediaResponse.status(), 200, `Media delivery: ${(await mediaResponse.text()).slice(0, 160)}`);
  for (const [index, item] of mediaItems.entries()) {
    await page.locator(`[data-media-id="${item.id}"]`).focus();
    await page.keyboard.press('Space');
    assert.equal(await page.locator(`[data-media-id="${item.id}"]`).evaluate(button => button === document.activeElement), true);
    await page.getByLabel('Bildtitel', { exact: true }).fill(index === 0 ? 'Bergblick' : 'Küstenblick');
    await page.getByLabel('Alternativtext des Mediums', { exact: true }).fill(index === 0 ? 'Grüne Berglandschaft mit warmer Abendsonne' : 'Küstenlandschaft mit Hügeln und Abendsonne');
    await page.getByRole('button', { name: 'Bildangaben speichern', exact: true }).click();
    await page.getByRole('button', { name: 'Bildangaben speichern', exact: true }).waitFor({ state: 'visible' });
    await page.waitForFunction(() => !document.querySelector('#media-save').disabled);
  }
  await axe('media picker');
  await page.screenshot({ path: 'reports/editor/media-library.png', fullPage: true });
  await page.getByRole('button', { name: 'Auswahl übernehmen (2)', exact: true }).click();
  await frame.locator(`#${galleryId} img`).first().waitFor();
  assert.equal(await frame.locator(`#${galleryId} img`).count(), 2);
  await frame.locator(`#${galleryId} img`).first().scrollIntoViewIfNeeded();
  await page.waitForFunction(id => document.querySelector('#preview').contentDocument?.querySelector(`#${id} img`)?.naturalWidth > 0, galleryId);
  const imageId = await frame.locator(`#${galleryId} figure`).first().getAttribute('id');
  await page.locator(`#structure [data-block-id="${imageId}"]`).click();
  await page.getByLabel('Bildunterschrift', { exact: true }).fill('Ein Ausblick zum Durchatmen.');
  await frame.getByText('Ein Ausblick zum Durchatmen.', { exact: true }).waitFor();
  await page.getByRole('button', { name: 'Nach unten verschieben', exact: true }).click();
  await page.getByRole('button', { name: 'Rückgängig', exact: true }).click();
  await page.locator(`#structure [data-block-id="${galleryId}"]`).click();
  await page.getByRole('button', { name: 'Design', exact: true }).click();
  await openGroup('Layout');
  await page.locator('#style-gridColumns').fill('2');
  await page.locator('#style-gridColumns').blur();
  const columnsOfGallery = async expected => {
    await page.waitForFunction(({ id, expected }) => {
      const doc = document.querySelector('#preview').contentDocument;
      const element = doc?.querySelector(`#${id}`);
      return element && doc.defaultView.getComputedStyle(element).gridTemplateColumns.split(' ').length === expected;
    }, { id: galleryId, expected });
  };
  await columnsOfGallery(2);
  // Motion presets are keyframes, which the free system cannot express, so they stay available.
  await openGroup('Bewegung und Effekte');
  await page.getByLabel('Schatten', { exact: true }).selectOption('soft');
  await page.getByLabel('Hover-Effekt', { exact: true }).selectOption('lift');
  await page.getByLabel('Einblendung beim Laden', { exact: true }).selectOption('rise');
  await frame.locator(`#${galleryId}.fx-entrance-rise`).waitFor();
  await page.getByRole('button', { name: 'Mobil', exact: true }).click();
  await openGroup('Layout');
  await page.locator('#style-gridColumns').fill('1');
  await page.locator('#style-gridColumns').blur();
  await columnsOfGallery(1);
  await page.getByRole('button', { name: 'Desktop', exact: true }).click();
  await columnsOfGallery(2);
  await page.emulateMedia({ reducedMotion: 'reduce' });
  await frameValue(`#${galleryId}`, 'animationName', 'none');
  await frameValue(`#${galleryId}`, 'transform', 'none');
  await page.emulateMedia({ reducedMotion: 'no-preference' });
  await page.locator('#open-media-library').click();
  await page.locator('#media-status').filter({ hasText: '2 Bilder' }).waitFor();
  await page.locator(`[data-media-id="${mediaItems[0].id}"]`).click();
  await page.getByRole('button', { name: 'Archivieren', exact: true }).click();
  await page.locator('#media-status').filter({ hasText: '1 Bilder' }).waitFor();
  assert.equal((await context.request.get(origin + mediaItems[0].variants[0].src)).status(), 200);
  await page.getByLabel('Archivierte Bilder anzeigen', { exact: true }).check();
  await page.locator(`[data-media-id="${mediaItems[0].id}"]`).click();
  await page.getByRole('button', { name: 'Wiederherstellen', exact: true }).click();
  await page.locator('#media-status').filter({ hasText: '2 Bilder' }).waitFor();
  await page.getByRole('button', { name: 'Schließen', exact: true }).click();
  await page.locator('#structure [data-block-id="headline"]').click();
  await page.getByRole('button', { name: 'Inhalt', exact: true }).click();
  checks.push({ name: 'image upload, alt metadata, multi-select gallery, caption, sorting undo, archive/restore, responsive variants and reduced-motion effects', passed: true });
  console.log('Media library, gallery and effects passed.');

  await page.locator('#library [data-add="text"]').click();
  await page.getByLabel('Text', { exact: true }).fill('Dieser Absatz wurde im Editor eingefügt.');
  await page.getByRole('button', { name: 'Duplizieren', exact: true }).click();
  await page.getByLabel('Text', { exact: true }).fill('Das ist eine unabhängige Kopie.');
  await page.getByRole('button', { name: 'Nach oben verschieben', exact: true }).click();
  await page.getByRole('button', { name: 'Löschen', exact: true }).click();
  await page.getByRole('button', { name: 'Rückgängig', exact: true }).click();
  await page.locator('#toggle-library').click();
  await page.locator(`#structure [data-toggle="${presetSection}"]`).click();
  await page.locator(`#structure [data-toggle="${galleryId}"]`).click();
  await page.getByRole('button', { name: 'Text: Dieser Absatz wurde im Editor eingefügt.', exact: true }).dragTo(page.locator('#structure [data-block-id="principles"]'));
  await page.waitForFunction(() => document.querySelector('#structure [data-block-id="principles"]')?.parentElement.textContent.includes('Dieser Absatz wurde im Editor eingefügt.'));
  await page.getByRole('button', { name: 'Rückgängig', exact: true }).click();
  await page.locator('#toggle-library').click();
  await page.route('**/admin/api/pages/test-home/draft', route => route.abort(), { times: 1 });
  await page.getByRole('button', { name: 'Entwurf speichern', exact: true }).click();
  await page.locator('#message').filter({ hasText: 'Verbindung ist unterbrochen' }).waitFor();
  assert.equal(await page.getByRole('button', { name: 'Entwurf speichern', exact: true }).isEnabled(), true);
  checks.push({ name: 'network failure retains edits and allows retry', passed: true });
  await page.getByRole('button', { name: 'Entwurf speichern', exact: true }).click();
  await page.locator('#save-status').filter({ hasText: 'Entwurf gespeichert' }).waitFor();
  const stored = await (await context.request.get(origin + '/admin/api/pages/test-home')).json();
  console.log('Draft stored.');
  assert.equal((await (await context.request.get(origin)).text()).includes('Meine bearbeitete Website'), false);
  await page.reload();
  await page.locator('#save-status').filter({ hasText: 'Entwurf gespeichert' }).waitFor();
  await frame.getByRole('heading', { name: 'Meine bearbeitete Website', exact: true }).waitFor();
  const reloaded = await (await context.request.get(origin + '/admin/api/pages/test-home')).json();
  assert.deepEqual(reloaded.document, stored.document);
  await page.getByRole('button', { name: 'Veröffentlichen', exact: true }).click();
  await page.getByRole('button', { name: 'Abbrechen', exact: true }).first().focus();
  await page.keyboard.press('Escape');
  assert.equal(await page.locator('#publish-dialog').isVisible(), false);
  assert.equal(await page.locator('#publish').evaluate(element => element === document.activeElement), true);
  await page.getByRole('button', { name: 'Veröffentlichen', exact: true }).click();
  await page.getByRole('button', { name: 'Jetzt veröffentlichen', exact: true }).click();
  await page.locator('#save-status').filter({ hasText: 'Veröffentlicht' }).waitFor();
  assert.equal((await (await context.request.get(origin)).text()).includes('Meine bearbeitete Website'), true);
  const publicPage = await context.newPage();
  await publicPage.goto(origin);
  assert.equal(await publicPage.locator(`#${galleryId} img`).count(), 2);
  await publicPage.locator(`#${galleryId} img`).first().scrollIntoViewIfNeeded();
  await publicPage.waitForFunction(id => document.querySelector(`#${id} img`)?.naturalWidth > 0, galleryId);
  assert.equal(await publicPage.locator('#headline').evaluate(element => getComputedStyle(element).fontSize), '72px');
  await publicPage.setViewportSize({ width: 768, height: 1000 });
  assert.equal(await publicPage.locator('#headline').evaluate(element => getComputedStyle(element).fontSize), '52px');
  await publicPage.setViewportSize({ width: 390, height: 844 });
  assert.equal(await publicPage.locator('#headline').evaluate(element => getComputedStyle(element).fontSize), '36px');
  assert.equal(await publicPage.locator('#hero').evaluate(element => getComputedStyle(element).paddingTop), '32px');
  assert.equal(await publicPage.evaluate(() => document.documentElement.scrollWidth <= innerWidth), true);
  await publicPage.screenshot({ path: 'reports/editor/designed-public-mobile.png', fullPage: true });
  const contentAudit = await new AxeBuilder({ page: publicPage }).withTags(['wcag2a', 'wcag2aa', 'wcag21aa', 'best-practice']).analyze();
  assert.deepEqual(contentAudit.violations.map(v => v.id), [], JSON.stringify(contentAudit.violations.map(v => ({ id: v.id, nodes: v.nodes.map(n => ({ target: n.target, summary: n.failureSummary?.split('\n')[1] })) })), null, 1));
  checks.push({ name: 'edited public renderer accessibility', violations: 0 });
  await publicPage.close();
  checks.push({ name: 'add, duplicate, move, delete, undo, exact reload, separate publication, dialog focus', passed: true });
  console.log('Draft reload and publication passed.');

  // A second server save must never be silently overwritten by the open editor.
  const latest = await (await context.request.get(origin + '/admin/api/pages/test-home')).json();
  const external = structuredClone(latest.document); external.title = 'Parallel gespeicherter Titel';
  const externalSave = await context.request.post(origin + '/admin/api/pages/test-home/draft', { headers: { 'X-CSRF-Token': latest.csrfToken }, data: { document: external, expectedVersion: latest.version } });
  assert.equal(externalSave.status(), 200);
  await page.locator('#select-page').click();
  await page.getByLabel('Seitentitel', { exact: true }).fill('Meine lokalen Änderungen');
  await page.getByRole('button', { name: 'Entwurf speichern', exact: true }).click();
  await page.locator('#message').filter({ hasText: 'neuerer Stand' }).waitFor();
  console.log('Conflict displayed.');
  assert.equal(await page.getByLabel('Seitentitel', { exact: true }).inputValue(), 'Meine lokalen Änderungen');
  const download = page.waitForEvent('download');
  console.log('Testing conflict export.');
  await page.getByRole('button', { name: 'Änderungen als JSON sichern' }).click();
  assert.equal((await download).suggestedFilename(), 'kant-entwurf.json');
  await page.getByRole('button', { name: 'Serverstand laden', exact: true }).click();
  await page.getByRole('button', { name: 'Serverstand übernehmen', exact: true }).click();
  await page.getByLabel('Seitentitel', { exact: true }).filter({ visible: true }).waitFor();
  await page.waitForFunction(() => document.querySelector('#property-title')?.value === 'Parallel gespeicherter Titel');
  checks.push({ name: 'conflict retains local edits, JSON export, explicit server reload', passed: true });

  // Every management screen, not just the page list: they carry tables, disclosures and now the
  // media grid, and none of that was ever checked automatically before.
  for (const [name, path] of [
    ['user administration', '/admin/benutzer'],
    ['own account', '/admin/konto'],
    ['media library', '/admin/media'],
    ['menus', '/admin/menus'],
    ['forms', '/admin/forms'],
    ['statistics', '/admin/statistik'],
    ['system and update', '/admin/system'],
    ['areas', '/admin/partials'],
    ['design', '/admin/theme'],
    ['settings', '/admin/settings'],
  ]) {
    await page.goto(origin + path);
    assert.equal(new URL(page.url()).pathname, path, path);
    await axe(name);
  }
  // The media screen renders its images itself, so the library has to be visible without the dialog.
  await page.goto(origin + '/admin/media');
  assert.equal(await page.locator('.library-tile').count(), 2);
  // The drop area is an enhancement of a real file input: choosing files has to reach the input
  // and be named back to the user. Nothing is submitted here.
  await page.locator('#files').setInputFiles(fixture.images);
  await page.locator('[data-chosen]').filter({ hasText: '2 Datei(en) gewählt' }).waitFor();
  await page.screenshot({ path: 'reports/editor/media-screen.png', fullPage: true });
  checks.push({ name: 'management screens reachable, media library rendered as a page', passed: true });

  // The consent question, switched on the way an administrator would switch it on, and then
  // looked at from a visitor's browser: the banner has to appear, and the embed must not load.
  await page.goto(origin + '/admin/settings');
  await page.getByLabel('Einwilligungshinweis anzeigen', { exact: true }).check();
  await page.getByLabel('Adresse der Datenschutzseite', { exact: true }).fill('grundlagen');
  await page.getByRole('button', { name: 'Einstellungen speichern', exact: true }).click();
  await page.locator('.notice.ok').waitFor();

  // A page with an embed, added through the API so the check stays about consent, not the editor.
  const forEmbed = await (await context.request.get(origin + '/admin/api/pages/test-projektstand')).json();
  const withEmbed = structuredClone(forEmbed.document);
  withEmbed.schemaVersion = 14;
  withEmbed.blocks.push({
    id: 'karte', type: 'embed',
    props: { group: 'external', title: 'Anfahrt', provider: 'OpenStreetMap', url: 'https://karten.example/einbetten', hint: '', height: 320 },
  });
  const embedSave = await context.request.post(origin + '/admin/api/pages/test-projektstand/draft', { headers: { 'X-CSRF-Token': forEmbed.csrfToken }, data: { document: withEmbed, expectedVersion: forEmbed.version } });
  assert.equal(embedSave.status(), 200, await embedSave.text());
  // The version and the revision after a save are whatever the server says, not an assumption.
  const afterSave = await (await context.request.get(origin + '/admin/api/pages/test-projektstand')).json();
  const published = await context.request.post(origin + '/admin/api/pages/test-projektstand/publish', { headers: { 'X-CSRF-Token': afterSave.csrfToken }, data: { revisionId: afterSave.revisionId, expectedVersion: afterSave.version } });
  assert.equal(published.status(), 200, await published.text());

  // A separate context: a visitor without the administration's cookies.
  const visitor = await browser.newContext({ viewport: { width: 1100, height: 900 } });
  const visitorPage = await visitor.newPage();
  await visitorPage.goto(origin + '/projektstand');
  await visitorPage.locator('.consent-bar').waitFor();
  assert.equal(await visitorPage.locator('iframe').count(), 0, 'Nothing may load before consent.');
  assert.equal((await visitorPage.content()).includes('karten.example/einbetten'), false, 'The address must not even be in the markup.');
  const blocked = await new AxeBuilder({ page: visitorPage }).withTags(['wcag2a', 'wcag2aa', 'wcag21aa', 'best-practice']).analyze();
  assert.deepEqual(blocked.violations.map(v => v.id), [], 'consent banner accessibility');
  await visitorPage.screenshot({ path: 'reports/editor/consent-banner.png', fullPage: false });

  // Consenting through the embed's own button grants exactly that group, and then it loads.
  await visitorPage.getByRole('button', { name: 'Inhalt laden und einwilligen', exact: true }).click();
  await visitorPage.locator('iframe').waitFor({ state: 'attached' });
  assert.equal(await visitorPage.locator('.consent-bar').count(), 0, 'A decision is a decision.');
  assert.equal(await visitorPage.locator('a[href="/einwilligung"]').count(), 1, 'Revoking has to stay reachable.');
  await visitorPage.screenshot({ path: 'reports/editor/consent-granted.png', fullPage: false });
  // And the way back: the consent page can refuse again, which blocks the embed once more.
  await visitorPage.goto(origin + '/einwilligung');
  await new AxeBuilder({ page: visitorPage }).withTags(['wcag2a', 'wcag2aa', 'wcag21aa']).analyze()
    .then(result => assert.deepEqual(result.violations.map(v => v.id), [], 'consent page accessibility'));
  await visitorPage.getByRole('button', { name: 'Nur notwendige', exact: true }).click();
  await visitorPage.goto(origin + '/projektstand');
  assert.equal(await visitorPage.locator('iframe').count(), 0, 'A refusal must stick.');
  await visitor.close();
  checks.push({ name: 'consent banner, blocked embed, granting per embed and revoking', passed: true });
  console.log('Consent checks passed.');

  // Back to the way the rest of the run expects it: no question, so the other screens stay as they were.
  await page.goto(origin + '/admin/settings');
  await page.getByLabel('Einwilligungshinweis anzeigen', { exact: true }).uncheck();
  await page.getByRole('button', { name: 'Einstellungen speichern', exact: true }).click();
  await page.locator('.notice.ok').waitFor();

  // Back into the editor. The draft differs from the published state by now, so wait for the
  // structure rather than for a particular save status.
  await page.goto(origin + '/admin/pages/test-home');
  await page.locator('#structure [data-block-id="headline"]').waitFor();
  await page.locator('#structure [data-block-id="headline"]').click();
  await page.getByRole('button', { name: 'Design', exact: true }).click();
  await page.locator('#preview-status').filter({ hasText: 'Entwurf ·' }).waitFor();
  await axe('desktop editor');
  await page.screenshot({ path: 'reports/editor/editor-desktop.png', fullPage: true });
  await page.getByRole('button', { name: 'Mobil', exact: true }).click();
  assert.equal(await page.locator('#preview').evaluate(element => Math.round(element.getBoundingClientRect().width)), 390);
  await page.screenshot({ path: 'reports/editor/editor-mobile-preview.png', fullPage: true });
  await page.setViewportSize({ width: 390, height: 844 });
  assert.equal(await page.evaluate(() => document.documentElement.scrollWidth <= innerWidth), true);
  await axe('mobile editor');
  await page.screenshot({ path: 'reports/editor/editor-phone.png', fullPage: true });
  await page.locator('#open-media-library').click();
  await page.locator('#media-status').filter({ hasText: '2 Bilder' }).waitFor();
  await axe('mobile media library');
  await page.screenshot({ path: 'reports/editor/media-phone.png', fullPage: true });
  await page.getByRole('button', { name: 'Schließen', exact: true }).click();
  assert.deepEqual(errors, []);
  await writeFile('reports/editor/result.json', JSON.stringify({ checks, publicDataUntouched: true }, null, 2));
  console.log('Editor end-to-end checks passed; isolated database, production data unchanged.');
  if (process.argv.includes('--audit')) {
    console.log('Auditing the published v3 document with responsive design, gallery images and effects.');
    await browser.close(); browser = null;
    await new Promise((resolve, reject) => {
      const audit = spawn(process.execPath, ['scripts/audit.mjs'], { windowsHide: true, stdio: 'inherit', env: { ...process.env, CMS_URL: origin, CMS_AUDIT_DIR: 'reports/lighthouse-editor' } });
      audit.on('error', reject);
      audit.on('exit', code => code === 0 ? resolve() : reject(new Error(`Designed-page audit failed (${code}).`)));
    });
  }
} catch (error) {
  console.error('Check failed:', error.message);
  await activePage?.screenshot({ path: 'reports/editor/failure.png', fullPage: true, timeout: 5000 }).catch(() => {});
  throw error;
} finally {
  await browser?.close();
  server.kill();
}