import { act, cleanup, render, screen } from '@testing-library/react';
import { afterEach, describe, expect, it, vi } from 'vitest';
import { DESKTOP_COOKIE_NAME } from '@/lib/desktop-client';
import { DesktopAppSettings } from './desktop-app-settings';

/**
 * desktop-app-settings.test — Einstellungsseite "Desktop-App" (18-03).
 * next-intl-Mock nach dem Muster in widget-settings-panel.test.tsx
 * (de.json-gestuetzt), `@/lib/desktop` gemockt.
 */
vi.mock('next-intl', async () => {
  const messages = (await import('@/messages/de.json')).default as Record<string, unknown>;
  const lookup = (path: string): string | undefined =>
    path.split('.').reduce<unknown>((o, k) => (o && typeof o === 'object' ? (o as any)[k] : undefined), messages) as
      | string
      | undefined;
  return {
    useTranslations:
      (ns?: string) =>
      (key: string, values?: Record<string, unknown>) => {
        const raw = lookup(ns ? `${ns}.${key}` : key) ?? key;
        return values ? raw.replace(/\{(\w+)\}/g, (_: string, n: string) => String(values[n] ?? '')) : raw;
      },
    useLocale: () => 'de',
  };
});

const { loadDesktopLatest } = vi.hoisted(() => ({ loadDesktopLatest: vi.fn() }));

vi.mock('@/lib/desktop', async (importOriginal) => {
  const actual = await importOriginal<typeof import('@/lib/desktop')>();
  return {
    ...actual,
    loadDesktopLatest,
  };
});

function clearDesktopCookie() {
  document.cookie = `${DESKTOP_COOKIE_NAME}=; expires=Thu, 01 Jan 1970 00:00:00 GMT; path=/`;
}

afterEach(() => {
  cleanup();
  vi.clearAllMocks();
  clearDesktopCookie();
});

const windowsFile = {
  name: 'Tessera-Setup-1.1.0.exe',
  size: 6123456,
  sha256: 'x',
  url: '/desktop/download/windows',
};
const linuxFile = {
  name: 'Tessera-1.1.0.AppImage',
  size: 106461688,
  sha256: 'y',
  url: '/desktop/download/linux',
};

describe('DesktopAppSettings (18-03)', () => {
  it('Test 1 (beide Plattformen): Version, zwei Links, Dateiname und Groesse', async () => {
    loadDesktopLatest.mockResolvedValue({
      version: '1.1.0',
      channel: 'live',
      commit: 'abc1234',
      buildTime: 'x',
      files: { windows: windowsFile, linux: linuxFile },
    });
    render(<DesktopAppSettings />);

    expect(await screen.findByText('Aktuelle Version: 1.1.0')).toBeInTheDocument();

    const windowsLink = screen.getByTestId('desktop-download-windows');
    expect(windowsLink).toHaveAttribute('href', 'http://localhost:3001/desktop/download/windows');
    const linuxLink = screen.getByTestId('desktop-download-linux');
    expect(linuxLink).toHaveAttribute('href', 'http://localhost:3001/desktop/download/linux');

    expect(screen.getByText('Tessera-Setup-1.1.0.exe · 5,8 MB')).toBeInTheDocument();
    expect(screen.getByText('Tessera-1.1.0.AppImage · 101,5 MB')).toBeInTheDocument();
  });

  it('Test 2 (Beta-Kanal): Hinweis mit Commit', async () => {
    loadDesktopLatest.mockResolvedValue({
      version: '1.1.0',
      channel: 'beta',
      commit: 'abc1234',
      buildTime: 'x',
      files: { windows: windowsFile, linux: linuxFile },
    });
    render(<DesktopAppSettings />);

    expect(await screen.findByText('Beta-Ausgabe, Stand abc1234')).toBeInTheDocument();
  });

  it('Test 3 (keine Pakete): Hinweistext statt Knoepfe, Saetze bleiben', async () => {
    loadDesktopLatest.mockResolvedValue(null);
    render(<DesktopAppSettings />);

    expect(
      await screen.findByText('Auf diesem Server sind derzeit keine Desktop-Pakete hinterlegt.'),
    ).toBeInTheDocument();
    expect(screen.queryByTestId('desktop-download-windows')).toBeNull();
    expect(screen.queryByTestId('desktop-download-linux')).toBeNull();
    expect(
      screen.getByText(
        'Die Desktop-App öffnet Tessera in einem eigenen Fenster – ohne Browser, mit Symbol im Infobereich der Taskleiste.',
      ),
    ).toBeInTheDocument();
  });

  it('Test 4 (im Desktop-Client): zeigt verbundenen Server und Änderungshinweis', async () => {
    document.cookie = `${DESKTOP_COOKIE_NAME}=1; path=/`;
    loadDesktopLatest.mockResolvedValue(null);
    render(<DesktopAppSettings />);

    expect(await screen.findByText('Verbunden mit: http://localhost:3000')).toBeInTheDocument();
    expect(
      screen.getByText('Ändern über das Tessera-Symbol im Infobereich → „Server-Adresse ändern…“'),
    ).toBeInTheDocument();
    expect(screen.getByTestId('desktop-connected')).toBeInTheDocument();
  });

  it('Test 5 (im Browser): kein Block ohne Desktop-Cookie', async () => {
    loadDesktopLatest.mockResolvedValue(null);
    render(<DesktopAppSettings />);
    await act(async () => {});

    expect(screen.queryByTestId('desktop-connected')).toBeNull();
  });
});