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

// Mock next-intl useTranslations, namespaced like the real catalog/common usage.
vi.mock('next-intl', () => ({
  useTranslations: (namespace: string) => (key: string) => {
    const translations: Record<string, Record<string, string>> = {
      widgets: {
        catalogTitle: 'Widget hinzufügen',
        catalogClose: 'Dialog schließen',
        'clock.name': 'Uhr',
        'clock.description': 'Zeigt die aktuelle Zeit',
        'search.name': 'Suche',
        'search.description': 'Schnellsuche',
        'calendar.name': 'Kalender',
        'calendar.description': 'Kommende Termine',
        'note.name': 'Notiz',
        'note.description': 'Schnelle Notizen',
        'calculator.name': 'Taschenrechner',
        'calculator.description': 'Einfache Berechnungen',
        'favorites.name': 'Favoriten',
        'favorites.description': 'Schnellzugriff auf Favoriten',
        'stopwatch.name': 'Stoppuhr',
        'stopwatch.description': 'Zeit messen',
        'pictureFrame.name': 'Bilderrahmen',
        'pictureFrame.description': 'Bilder als Diashow',
        'xframe.name': 'XFrame',
        'xframe.description': 'Webseite einbetten',
        'proxmox.name': 'Proxmox',
        'proxmox.description': 'Zustand Ihrer Proxmox-Server auf einen Blick',
      },
      common: {
        close: 'Schließen',
      },
    };
    return translations[namespace]?.[key] ?? key;
  },
}));

import { WIDGET_TYPES } from '@tessera/shared';
import { WIDGET_REGISTRY } from './widget-registry';
import { WidgetCatalogModal } from './widget-catalog-modal';

// Neun Kacheln sind Plattform-Kacheln ohne moduleSlug und erscheinen auch bei
// leerer Modulliste; die Proxmox-Kachel (quick-260924-i8v) nur mit Zugriff
// auf das Modul 'proxmox'.
const baseProps = {
  isOpen: true,
  onClose: vi.fn(),
  onAddWidget: vi.fn(),
  accessibleModuleSlugs: [] as string[],
};

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

describe('WidgetCatalogModal', () => {
  it('renders nothing when isOpen is false', () => {
    render(<WidgetCatalogModal {...baseProps} isOpen={false} />);

    expect(screen.queryByRole('dialog')).not.toBeInTheDocument();
  });

  it('renders the dialog with title and all widget type options when open', () => {
    render(<WidgetCatalogModal {...baseProps} />);

    expect(screen.getByRole('dialog', { name: 'Widget hinzufügen' })).toBeInTheDocument();
    expect(screen.getByRole('button', { name: /Uhr/ })).toBeInTheDocument();
  });

  it('clicking the backdrop button closes the dialog (D-01)', async () => {
    const onClose = vi.fn();
    const user = userEvent.setup();

    render(<WidgetCatalogModal {...baseProps} onClose={onClose} />);

    await user.click(screen.getByRole('button', { name: 'Dialog schließen' }));

    expect(onClose).toHaveBeenCalledOnce();
  });

  it('activating the backdrop button via a real keyboard Enter closes the dialog (D-01)', async () => {
    const onClose = vi.fn();
    const user = userEvent.setup();

    render(<WidgetCatalogModal {...baseProps} onClose={onClose} />);

    const backdrop = screen.getByRole('button', { name: 'Dialog schließen' });
    backdrop.focus();
    await user.keyboard('{Enter}');

    expect(onClose).toHaveBeenCalledOnce();
  });

  it('clicking inside the dialog surface does not close the dialog', async () => {
    const onClose = vi.fn();
    const user = userEvent.setup();

    render(<WidgetCatalogModal {...baseProps} onClose={onClose} />);

    await user.click(screen.getByRole('dialog', { name: 'Widget hinzufügen' }));

    expect(onClose).not.toHaveBeenCalled();
  });

  it('clicking a widget type option adds the widget and closes the dialog', async () => {
    const onAddWidget = vi.fn();
    const onClose = vi.fn();
    const user = userEvent.setup();

    render(<WidgetCatalogModal {...baseProps} onAddWidget={onAddWidget} onClose={onClose} />);

    await user.click(screen.getByRole('button', { name: /Uhr/ }));

    expect(onAddWidget).toHaveBeenCalledWith('clock');
    expect(onClose).toHaveBeenCalledOnce();
  });

  it('pressing Escape closes the dialog', () => {
    const onClose = vi.fn();

    render(<WidgetCatalogModal {...baseProps} onClose={onClose} />);

    fireEvent.keyDown(document, { key: 'Escape' });

    expect(onClose).toHaveBeenCalledOnce();
  });

  it('the close button in the dialog header carries the shared common.close label', () => {
    render(<WidgetCatalogModal {...baseProps} />);

    // Two buttons named "Schließen": the header close icon button.
    // Query specifically among the dialog's own buttons, excluding the backdrop
    // (backdrop is named "Dialog schließen", the header button "Schließen").
    expect(screen.getByRole('button', { name: 'Schließen' })).toBeInTheDocument();
  });
});

/**
 * quick-260922-m1h: Der Katalog fuehrt keine zweite Typliste mehr — er leitet
 * sie aus der Registry ab und filtert nach Modulzugriff.
 */
describe('WidgetCatalogModal: Liste kommt aus der Registry (quick-260922-m1h)', () => {
  function catalogTypes(): (string | null)[] {
    const dialog = screen.getByRole('dialog', { name: 'Widget hinzufügen' });
    return Array.from(
      dialog.querySelectorAll<HTMLButtonElement>('button[data-widget-type]'),
    ).map((c) => c.getAttribute('data-widget-type'));
  }

  it("zeigt mit Zugriff auf 'proxmox' alle elf Kacheln in der Reihenfolge der Registry, Erinnerungen zuletzt", () => {
    render(<WidgetCatalogModal {...baseProps} accessibleModuleSlugs={['proxmox']} />);

    expect(catalogTypes()).toEqual([...WIDGET_TYPES]);
    expect(catalogTypes().at(-1)).toBe('reminder');
    expect(Object.keys(WIDGET_REGISTRY)).toEqual([...WIDGET_TYPES]);
  });

  it('zeigt ohne Modulzugriff die neun Plattform-Kacheln ohne Proxmox', () => {
    render(<WidgetCatalogModal {...baseProps} />);

    expect(catalogTypes()).toEqual(WIDGET_TYPES.filter((type) => type !== 'proxmox'));
  });

  it('die Kachel „Proxmox“ fehlt, wenn das Modul nicht zugaenglich ist, und erscheint, wenn doch', () => {
    const { rerender } = render(<WidgetCatalogModal {...baseProps} />);
    expect(screen.queryByRole('button', { name: /Proxmox/ })).toBeNull();

    rerender(<WidgetCatalogModal {...baseProps} accessibleModuleSlugs={['proxmox']} />);
    expect(screen.getByRole('button', { name: /Proxmox/ })).toBeInTheDocument();
  });

  it('fail-closed: schlaegt der Modulabruf fehl (null), fehlt „Proxmox“, Plattform-Kacheln bleiben', () => {
    render(<WidgetCatalogModal {...baseProps} accessibleModuleSlugs={null} />);

    expect(screen.queryByRole('button', { name: /Proxmox/ })).toBeNull();
    expect(screen.getByRole('button', { name: /Notiz/ })).toBeInTheDocument();
  });
});