// Stichproben der englischen Oberfläche von Konto, Editor und Passwort-Seite (Task 10): Die Texte erscheinen bei Englisch, und was an
// Texten hängt (Abgleich der Passwörter, übersetzte Fehler, Beschriftung des wiederverwendeten Login-Dialogs) arbeitet in beiden
// Sprachen gleich. Wer Module mit `vi.resetModules()` frisch lädt, stellt die Sprache an der frischen Kopie von i18n.ts ein.
import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
import { germanLeft, texts } from './english-check';

const mocks = vi.hoisted(() => ({
  acct: {
    get: vi.fn(),
    create: vi.fn(),
    createEmailPasswordSession: vi.fn(),
    deleteSession: vi.fn(),
    createRecovery: vi.fn(),
    updateRecovery: vi.fn(),
  },
  getCard: vi.fn(),
  saveCard: vi.fn(),
  getCurrentUser: vi.fn(),
  requireLogin: vi.fn(),
  decodeImage: vi.fn(),
  loadCardAssets: vi.fn(),
  exportCard: vi.fn(),
  getGalleryCard: vi.fn(),
}));

vi.mock('../account/appwrite', () => ({ account: mocks.acct, client: {}, tables: {}, storage: {}, IDS: {}, APPWRITE_ENDPOINT: '' }));

beforeEach(() => {
  vi.resetAllMocks();
});

const fail = (code: number, type: string, message = '') => Object.assign(new Error(message), { code, type });
const submit = (form: HTMLFormElement | null) => form!.dispatchEvent(new Event('submit', { bubbles: true, cancelable: true }));

/** Frische Kopie von i18n.ts in der gewünschten Sprache (die Module danach laden dieselbe Kopie). */
async function freshI18n(lang: 'de' | 'en') {
  vi.resetModules();
  const i18n = await import('./i18n');
  i18n.setLang(lang, { persist: false });
  return i18n;
}

describe('Fehlertexte und Standardname auf Englisch', () => {
  it('errorMessage und validatePassword übersetzen beim Zurückgeben', async () => {
    await freshI18n('en');
    const { errorMessage } = await import('../account/errors');
    const { validatePassword } = await import('../account/auth');
    expect(errorMessage(fail(401, 'user_invalid_credentials'), 'login')).toBe('Email or password is incorrect.');
    expect(errorMessage(fail(404, 'user_not_found'), 'reset')).toBe('The link is invalid or has expired.');
    expect(errorMessage(fail(429, ''), 'login')).toBe('Too many attempts – please wait a moment.');
    expect(errorMessage(new TypeError('x'), 'load')).toBe('Can’t reach the server.');
    expect(errorMessage(new Error('x'), 'load')).toBe('Something went wrong. Please try again.');
    expect(validatePassword('kurz')).toBe('The password must be 8 to 256 characters long.');
  });

  it('der Standardname einer neuen Karte folgt der Sprache, die Konstante bleibt der deutsche Schlüssel', async () => {
    const i18n = await freshI18n('en');
    const { DEFAULT_CARD_NAME, normalizeName } = await import('../account/cards');
    const { initialEditorState } = await import('../editor/state');
    expect(normalizeName('  ')).toBe('My card');
    expect(initialEditorState().cardName).toBe('My card');
    expect(DEFAULT_CARD_NAME).toBe('Meine Karte');
    i18n.setLang('de', { persist: false });
    expect(normalizeName('  ')).toBe('Meine Karte');
  });
});

describe('Konto-Menü und Login-Dialog auf Englisch', () => {
  beforeEach(() => {
    document.body.innerHTML = '<div id="account-slot"></div>';
  });

  it('das Menü zeigt „Sign in“ bzw. Konto-Menü mit englischen Texten und Fehlern', async () => {
    await freshI18n('en');
    const { mountAccountMenu } = await import('../account/account-menu');
    const auth = await import('../account/auth');
    const slot = document.getElementById('account-slot')!;
    const menu = mountAccountMenu(slot);
    menu.ready();
    expect(texts(slot)).toEqual(['Sign in']);
    mocks.acct.get.mockResolvedValue({ $id: 'u1', email: 'kenso@example.com' });
    await auth.getCurrentUser();
    expect(texts(slot)).toEqual(expect.arrayContaining(['Account menu', 'Account', 'My cards', 'Sign out']));
    expect(germanLeft(slot)).toEqual([]);
    mocks.acct.deleteSession.mockRejectedValue(new TypeError('Failed to fetch'));
    [...slot.querySelectorAll('button')].find((b) => b.textContent === 'Sign out')!.click();
    await vi.waitFor(() => expect(slot.querySelector('.account-error')!.textContent).toBe('Can’t reach the server.'));
    menu.dispose();
  });

  it('alle drei Ansichten, der Abgleich der Passwörter (Fokus am Feld) und die Beschriftung nach dem Sprachwechsel', async () => {
    const i18n = await freshI18n('de');
    const { requireLogin } = await import('../account/login-dialog');
    const dialog = () => document.querySelector<HTMLDialogElement>('dialog.auth-dialog')!;
    const button = (text: string) => [...dialog().querySelectorAll('button')].find((b) => b.textContent === text)!;
    const input = (name: string) => dialog().querySelector<HTMLInputElement>(`input[name="${name}"]`)!;
    const alert = () => dialog().querySelector('[role="alert"]')!.textContent;

    // Der Dialog wird einmal gebaut: Deutsch öffnen und schließen, dann auf Englisch wieder öffnen.
    const first = requireLogin('login');
    expect(dialog().querySelector('.auth-close')!.getAttribute('aria-label')).toBe('Schließen');
    dialog().querySelector<HTMLButtonElement>('.auth-close')!.click();
    await first;
    i18n.setLang('en', { persist: false });
    void requireLogin('login');
    expect(dialog().querySelector('h2')!.textContent).toBe('Sign in');
    expect(dialog().querySelector('.auth-close')!.getAttribute('aria-label')).toBe('Close');
    expect(dialog().querySelector('[role="tablist"]')!.getAttribute('aria-label')).toBe('Account');
    expect(texts(dialog())).toEqual(expect.arrayContaining(['Sign in', 'Sign up', 'Email', 'Password', 'Forgot password?']));
    expect(germanLeft(dialog())).toEqual([]);

    button('Sign up').click();
    expect(dialog().querySelector('h2')!.textContent).toBe('Sign up');
    expect(texts(dialog())).toEqual(expect.arrayContaining(['At least 8 characters.', 'Confirm password']));
    input('email').value = 'a@b.de';
    input('password').value = 'passwort123';
    input('password-repeat').value = 'passwort124';
    submit(dialog().querySelector('form'));
    expect(alert()).toBe('The passwords don’t match.');
    expect(document.activeElement).toBe(input('password-repeat'));
    input('password').value = 'kurz';
    input('password-repeat').value = 'kurz';
    submit(dialog().querySelector('form'));
    expect(alert()).toBe('The password must be 8 to 256 characters long.');
    expect(document.activeElement).toBe(input('password'));
    expect(germanLeft(dialog())).toEqual([]);

    // vorhandene E-Mail: Meldung mit dem Link „Sign in“
    mocks.acct.create.mockRejectedValue(fail(409, 'user_already_exists'));
    input('password').value = 'passwort123';
    input('password-repeat').value = 'passwort123';
    submit(dialog().querySelector('form'));
    await vi.waitFor(() => expect(alert()).toBe('This email is already registered. Please sign in. Sign in'));

    button('Sign in').click();
    button('Forgot password?').click();
    expect(dialog().querySelector('h2')!.textContent).toBe('Forgot password');
    expect(texts(dialog())).toEqual(expect.arrayContaining(['Send link', 'Back to sign in']));
    mocks.acct.createRecovery.mockResolvedValue({});
    submit(dialog().querySelector('form'));
    await vi.waitFor(() => expect(dialog().querySelector('[role="status"]')!.textContent).toBe('We’ve sent you a link. It’s valid for one hour.'));
    expect(germanLeft(dialog())).toEqual([]);
  });
});

describe('Seite „Passwort neu setzen“ auf Englisch', () => {
  beforeEach(() => {
    document.body.innerHTML = '<main id="app-root"></main>';
  });

  it('ohne gültigen Link', async () => {
    await freshI18n('en');
    history.replaceState(null, '', '/passwort-neu');
    const { mountResetPage } = await import('../pages/reset-page');
    const root = document.getElementById('app-root')!;
    mountResetPage(root);
    expect(root.querySelector('h1')!.textContent).toBe('Set new password');
    expect(root.querySelector('[role="alert"]')!.textContent).toBe('The link is invalid or has expired.');
    expect(texts(root)).toContain('Request a new link');
    expect(germanLeft(root)).toEqual([]);
  });

  it('mit Link: Formular, Abgleich der Passwörter (Fokus am Feld) und Erfolg', async () => {
    await freshI18n('en');
    history.replaceState(null, '', '/passwort-neu?userId=u1&secret=s3cret');
    const { mountResetPage } = await import('../pages/reset-page');
    const root = document.getElementById('app-root')!;
    mountResetPage(root);
    expect(texts(root)).toEqual(expect.arrayContaining(['New password', 'Confirm new password', 'At least 8 characters.', 'Save password']));
    expect(germanLeft(root)).toEqual([]);
    const input = (name: string) => root.querySelector<HTMLInputElement>(`input[name="${name}"]`)!;
    input('password').value = 'passwort123';
    input('password-repeat').value = 'passwort124';
    submit(root.querySelector('form'));
    expect(root.querySelector('[role="alert"]')!.textContent).toBe('The passwords don’t match.');
    expect(document.activeElement).toBe(input('password-repeat'));
    input('password').value = 'kurz';
    input('password-repeat').value = 'kurz';
    submit(root.querySelector('form'));
    expect(root.querySelector('[role="alert"]')!.textContent).toBe('The password must be 8 to 256 characters long.');
    expect(document.activeElement).toBe(input('password'));
    mocks.acct.updateRecovery.mockResolvedValue({});
    input('password').value = 'passwort123';
    input('password-repeat').value = 'passwort123';
    submit(root.querySelector('form'));
    await vi.waitFor(() => expect(root.querySelector('[role="status"]')!.textContent).toBe('Password changed. You can now sign in.'));
    expect(germanLeft(root)).toEqual([]);
    history.replaceState(null, '', '/');
  });
});

describe('Editor auf Englisch', () => {
  let root: HTMLElement;

  /** Lädt den Editor frisch in der Sprache `en`; Karten-Dienst, Anmeldung, Renderer und Logo-Auswahl sind ersetzt. */
  async function mountEnglishEditor(url = '/gestalten') {
    vi.resetModules();
    vi.doMock('../account/auth', () => ({
      getCurrentUser: mocks.getCurrentUser,
      currentUserId: () => 'u1',
      onAuthChange: () => () => {},
      onLogout: () => () => {},
    }));
    vi.doMock('../account/login-dialog', () => ({ requireLogin: mocks.requireLogin }));
    vi.doMock('../account/cards', () => ({ cardsService: () => ({ get: mocks.getCard, save: mocks.saveCard, loadImage: vi.fn() }) }));
    vi.doMock('../card/render', () => ({ drawCard: vi.fn(), loadCardAssets: mocks.loadCardAssets, exportCard: mocks.exportCard }));
    vi.doMock('../community/gallery', () => ({ getGalleryCard: mocks.getGalleryCard, loadGalleryImage: vi.fn() }));
    vi.doMock('../logos/logo-picker', () => ({
      createLogoPicker: () => ({ el: document.createElement('div'), select: vi.fn(), selected: vi.fn(), dispose: vi.fn() }),
    }));
    vi.doMock('../editor/download', async (importOriginal) => ({
      ...(await importOriginal<typeof import('../editor/download')>()),
      saveBlobAs: vi.fn(),
    }));
    vi.doMock('../editor/upload', async (importOriginal) => ({
      ...(await importOriginal<typeof import('../editor/upload')>()),
      decodeImage: mocks.decodeImage,
    }));
    (await import('./i18n')).setLang('en', { persist: false });
    history.replaceState(null, '', url);
    document.body.innerHTML = '<main id="app-root"></main>';
    root = document.getElementById('app-root')!;
    const { mountEditor } = await import('../editor/editor-page');
    const { createStore, initialEditorState } = await import('../editor/state');
    const store = createStore(initialEditorState());
    return { store, unmount: mountEditor(root, store) };
  }

  beforeEach(() => {
    mocks.getCurrentUser.mockResolvedValue({ $id: 'u1', email: 'a@b.de' });
    mocks.requireLogin.mockResolvedValue(true);
    mocks.loadCardAssets.mockResolvedValue({ image: null, logo: null, brand: {}, logoMissing: false });
    vi.stubGlobal('requestAnimationFrame', () => 0);
    vi.stubGlobal('cancelAnimationFrame', () => {});
  });

  afterEach(() => {
    for (const id of ['auth', 'login-dialog', 'cards']) vi.doUnmock(`../account/${id}`);
    vi.doUnmock('../card/render');
    vi.doUnmock('../community/gallery');
    vi.doUnmock('../logos/logo-picker');
    vi.doUnmock('../editor/download');
    vi.doUnmock('../editor/upload');
    vi.unstubAllGlobals();
    history.replaceState(null, '', '/');
  });

  const errorText = () => root.querySelector('.msg-error')!.textContent;
  const button = (text: string) => [...root.querySelectorAll('button')].find((b) => b.textContent === text)!;
  const pick = (file: File) => {
    const input = root.querySelector<HTMLInputElement>('input[type="file"]')!;
    Object.defineProperty(input, 'files', { configurable: true, value: [file] });
    input.dispatchEvent(new Event('change'));
  };

  it('die Seite ist englisch; Dateifehler, Speichern, Download und Rückfrage ebenso', async () => {
    const { store, unmount } = await mountEnglishEditor();
    expect(store.get().cardName).toBe('My card');
    expect(germanLeft(root)).toEqual([]);
    expect(texts(root)).toEqual(
      expect.arrayContaining([
        'Template',
        'Image only',
        'Card preview',
        'Choose image',
        'Drag your idea here',
        'Save',
        'Customize',
        'Light',
        'Dark',
        'No logo',
        'Logo – AirCard-IOS · Symbol',
      ]),
    );

    // Typ und Größe prüft validateImageFile (übersetzt beim Zurückgeben); die Fehler von decodeImage tragen den deutschen Schlüssel
    pick(new File(['x'], 'a.gif', { type: 'image/gif' }));
    expect(errorText()).toBe('Please choose a PNG, JPG or WebP image.');
    const { PIXELS_MESSAGE, READ_MESSAGE } = await import('../editor/upload');
    mocks.decodeImage.mockRejectedValueOnce(new Error(PIXELS_MESSAGE));
    pick(new File(['x'], 'a.png', { type: 'image/png' }));
    await vi.waitFor(() => expect(errorText()).toBe('The image is too large (max. 40 megapixels).'));
    mocks.decodeImage.mockRejectedValueOnce(new Error(READ_MESSAGE));
    pick(new File(['x'], 'a.png', { type: 'image/png' }));
    await vi.waitFor(() => expect(errorText()).toBe('The image couldn’t be read.'));

    // Mit Bild: Zoom in der englischen Schreibweise, Speichern scheitert, dann klappt es
    const image = { source: {} as CanvasImageSource, w: 3000, h: 2000 };
    store.set({ image, imageBlob: new Blob(['png'], { type: 'image/png' }), imageChanged: true });
    expect(root.querySelector('.zoom-value')!.textContent).toBe('100%');
    mocks.saveCard.mockRejectedValueOnce(new TypeError('Failed to fetch'));
    button('Save').click();
    await vi.waitFor(() => expect(errorText()).toBe('Saving failed – Can’t reach the server.'));
    mocks.saveCard.mockResolvedValueOnce({ id: 'k1', name: 'Urlaub', imageFileId: 'i', previewFileId: 'p', updatedAt: 'x', config: store.get().config });
    button('Save').click();
    await vi.waitFor(() => expect(button('Saved')).toBeDefined());
    expect(root.querySelector('.bound-label')!.textContent).toBe('Editing: Urlaub');

    // Download: Logos nicht ladbar, dann ein PNG über der Wallet-Grenze, dann ein Export-Fehler mit deutscher Meldung aus card/render.ts
    mocks.loadCardAssets.mockRejectedValueOnce(new Error('Failed to fetch'));
    button('Download').click();
    await vi.waitFor(() => expect(errorText()).toBe('The logos couldn’t be loaded.'));
    mocks.loadCardAssets.mockResolvedValue({ image, logo: null, brand: {}, logoMissing: false });
    mocks.exportCard.mockResolvedValueOnce(new Blob([new Uint8Array(4_000_100)], { type: 'image/png' }));
    button('Download').click();
    const warning = 'The PNG is larger than 4 MB – Wallet may only accept smaller images.';
    await vi.waitFor(() => expect(root.querySelector('.msg-warning')!.textContent).toBe(warning));
    mocks.exportCard.mockRejectedValueOnce(new Error('Das Bild konnte nicht erzeugt werden.'));
    button('Download').click();
    await vi.waitFor(() => expect(errorText()).toBe('The image couldn’t be created.'));

    // „Neue Karte“ mit ungespeicherten Änderungen fragt nach
    store.set({ imageChanged: true });
    button('New card').click();
    await vi.waitFor(() => expect(document.querySelector('dialog.confirm-dialog')).not.toBeNull());
    const dialog = document.querySelector('dialog.confirm-dialog')!;
    expect(texts(dialog)).toEqual(['Discard unsaved changes?', 'Everything you’ve changed since the last save will be lost.', 'Cancel', 'Discard']);
    unmount();
    dialog.remove();
  });

  it('Karte oder Vorlage öffnen: Ladehinweis, abgebrochene Anmeldung, fehlende Karte, fehlende Vorlage', async () => {
    let known!: (user: null) => void;
    mocks.getCurrentUser.mockReturnValue(new Promise<null>((resolve) => (known = resolve)));
    mocks.requireLogin.mockResolvedValue(false);
    let editor = await mountEnglishEditor('/gestalten?karte=abc');
    expect(root.querySelector('.msg-notice')!.textContent).toBe('Loading card …');
    known(null);
    await vi.waitFor(() => expect(root.querySelector('.msg-warning')!.textContent).toBe('Sign in to open this card.'));
    editor.unmount();

    mocks.getCurrentUser.mockResolvedValue({ $id: 'u1', email: 'a@b.de' });
    mocks.getCard.mockRejectedValue(fail(404, 'row_not_found'));
    editor = await mountEnglishEditor('/gestalten?karte=abc');
    await vi.waitFor(() => expect(errorText()).toBe('This card no longer exists or doesn’t belong to your account.'));
    editor.unmount();

    let answer!: (card: null) => void;
    mocks.getGalleryCard.mockReturnValue(new Promise<null>((resolve) => (answer = resolve)));
    editor = await mountEnglishEditor('/gestalten?vorlage=abc');
    expect(root.querySelector('.msg-notice')!.textContent).toBe('Loading template …');
    answer(null);
    await vi.waitFor(() => expect(errorText()).toBe('This template is no longer available.'));
    editor.unmount();
  });
});