import { cleanup, fireEvent, render, screen } from '@testing-library/react';
import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';

// quick-260916-dyv: Dashboard-Seite — feste Aktionsleiste unten rechts
// (Stift/Haekchen + "Widget hinzufuegen"), Grid direkt im Container p-2,
// kein Abstands-Wrapper (mt-8) und kein Block oben rechts (top-2) mehr.
// Muster: admin/groups/groups-page.test.tsx (next-intl-Mock mit Namensraum).

const messages: Record<string, Record<string, string>> = {
  widgets: {
    editMode: 'Dashboard bearbeiten',
    saveChanges: 'Änderungen speichern',
    addWidget: 'Widget hinzufügen',
    layoutLoadError: 'Dashboard konnte nicht geladen werden. Bitte laden Sie die Seite neu.',
  },
};

vi.mock('next-intl', () => ({
  useTranslations: (ns: string) => (key: string) => messages[ns]?.[key] ?? key,
}));

const mockStore = {
  layouts: { lg: [], md: [], sm: [], xs: [], xxs: [] },
  widgets: [] as Array<{ id: string; widgetType: string; config: Record<string, unknown> }>,
  isEditMode: false,
  isDirty: false,
  isLoading: false,
  error: null as string | null,
  setEditMode: vi.fn(),
  updateLayouts: vi.fn(),
  addWidget: vi.fn(),
  removeWidget: vi.fn(),
  loadDashboard: vi.fn(),
  saveLayout: vi.fn(),
};

vi.mock('@/lib/stores/dashboard-store', () => ({
  useDashboardStore: (selector?: (state: typeof mockStore) => unknown) => {
    if (selector) return selector(mockStore);
    return mockStore;
  },
}));

vi.mock('@/components/dashboard/dashboard-grid', () => ({
  DashboardGrid: (p: { isEditMode: boolean }) => (
    <div data-testid="dashboard-grid" data-edit={String(p.isEditMode)} />
  ),
}));

vi.mock('@/components/dashboard/widget-catalog-modal', () => ({
  WidgetCatalogModal: () => null,
}));

vi.mock('@/components/dashboard/widgets/clock-widget', () => ({ ClockWidget: () => null }));
vi.mock('@/components/dashboard/widgets/search-widget', () => ({ SearchWidget: () => null }));
vi.mock('@/components/dashboard/widgets/calendar-widget', () => ({ CalendarWidget: () => null }));
vi.mock('@/components/dashboard/widgets/note-widget', () => ({ NoteWidget: () => null }));
vi.mock('@/components/dashboard/widgets/calculator-widget', () => ({ CalculatorWidget: () => null }));
vi.mock('@/components/dashboard/widgets/stopwatch-widget', () => ({ StopwatchWidget: () => null }));
vi.mock('@/components/dashboard/widgets/favorites-widget', () => ({ FavoritesWidget: () => null }));
vi.mock('@/components/dashboard/widgets/link-widget', () => ({ LinkWidget: () => null }));

beforeEach(() => {
  mockStore.isEditMode = false;
  mockStore.isLoading = false;
  mockStore.error = null;
  mockStore.setEditMode = vi.fn();
  mockStore.loadDashboard = vi.fn();
});

afterEach(() => {
  cleanup();
});

describe('DashboardPage (quick-260916-dyv)', () => {
  it('Test 1: Ansichtsmodus — Stift in fester Leiste unten rechts, kein "Widget hinzufuegen", kein mt-8/top-2, Grid direkt im Container p-2', async () => {
    const { default: DashboardPage } = await import('./page');
    render(<DashboardPage />);

    const toggle = screen.getByRole('button', { name: 'Dashboard bearbeiten' });
    const bar = toggle.parentElement as HTMLElement;
    expect(bar.classList.contains('fixed')).toBe(true);
    expect(bar.classList.contains('bottom-6')).toBe(true);
    expect(bar.classList.contains('right-6')).toBe(true);
    expect(bar.classList.contains('z-20')).toBe(true);

    expect(screen.queryByRole('button', { name: 'Widget hinzufügen' })).toBeNull();
    expect(document.querySelector('.mt-8')).toBeNull();
    expect(document.querySelector('.top-2')).toBeNull();

    const grid = screen.getByTestId('dashboard-grid');
    expect((grid.parentElement as HTMLElement).classList.contains('p-2')).toBe(true);
    expect(grid.getAttribute('data-edit')).toBe('false');
  });

  it('Test 2: Bearbeitungsmodus — "Widget hinzufuegen" links neben dem Haekchen in derselben Leiste, Grid im Bearbeitungsmodus', async () => {
    mockStore.isEditMode = true;
    const { default: DashboardPage } = await import('./page');
    render(<DashboardPage />);

    const toggle = screen.getByRole('button', { name: 'Änderungen speichern' });
    const add = screen.getByRole('button', { name: 'Widget hinzufügen' });
    expect(add.parentElement).toBe(toggle.parentElement);
    // "Widget hinzufuegen" steht im DOM VOR dem Umschalter (links daneben).
    expect(add.compareDocumentPosition(toggle) & Node.DOCUMENT_POSITION_FOLLOWING).toBeTruthy();

    expect(screen.getByTestId('dashboard-grid').getAttribute('data-edit')).toBe('true');
  });

  it('Test 3: Umschalten — Klick auf "Dashboard bearbeiten" ruft setEditMode(true) genau einmal', async () => {
    const { default: DashboardPage } = await import('./page');
    render(<DashboardPage />);

    fireEvent.click(screen.getByRole('button', { name: 'Dashboard bearbeiten' }));
    expect(mockStore.setEditMode).toHaveBeenCalledTimes(1);
    expect(mockStore.setEditMode).toHaveBeenCalledWith(true);
  });
});