import { act, cleanup, render } from '@testing-library/react';
import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
import { DESKTOP_COOKIE_NAME } from '@/lib/desktop-client';
import { DesktopThemeSync } from './desktop-theme-sync';

/**
 * desktop-theme-sync.test (quick-261002) — meldet hell/dunkel per
 * `plugin:window|set_theme` an das Desktop-Fenster, im Browser nichts.
 */
const theme = vi.hoisted(() => ({ resolvedTheme: 'dark' as string | undefined }));
vi.mock('next-themes', () => ({ useTheme: () => theme }));

const invoke = vi.fn(() => Promise.resolve());

function setCookie() {
  document.cookie = `${DESKTOP_COOKIE_NAME}=1; path=/`;
}

beforeEach(() => {
  invoke.mockClear();
  (window as unknown as Record<string, unknown>).__TAURI_INTERNALS__ = { invoke };
  theme.resolvedTheme = 'dark';
});

afterEach(() => {
  cleanup();
  document.cookie = `${DESKTOP_COOKIE_NAME}=; expires=Thu, 01 Jan 1970 00:00:00 GMT; path=/`;
  delete (window as unknown as Record<string, unknown>).__TAURI_INTERNALS__;
});

describe('DesktopThemeSync', () => {
  it('meldet im Desktop-Client das dunkle Erscheinungsbild', async () => {
    setCookie();
    await act(async () => {
      render(<DesktopThemeSync />);
    });
    expect(invoke).toHaveBeenCalledWith('plugin:window|set_theme', { value: 'dark' });
  });

  it('meldet einen Wechsel auf hell erneut', async () => {
    setCookie();
    const view = await act(async () => render(<DesktopThemeSync />));
    theme.resolvedTheme = 'light';
    await act(async () => {
      view.rerender(<DesktopThemeSync />);
    });
    expect(invoke).toHaveBeenLastCalledWith('plugin:window|set_theme', { value: 'light' });
  });

  it('ruft im Browser nichts auf', async () => {
    await act(async () => {
      render(<DesktopThemeSync />);
    });
    expect(invoke).not.toHaveBeenCalled();
  });

  it('wartet, solange das Erscheinungsbild noch nicht feststeht', async () => {
    setCookie();
    theme.resolvedTheme = undefined;
    await act(async () => {
      render(<DesktopThemeSync />);
    });
    expect(invoke).not.toHaveBeenCalled();
  });
});