// FE-PLUGINS-FRAME-001 to 012
import { render, cleanup, waitFor, fireEvent, screen, act } from '@testing-library/react';
import PluginFrame from './PluginFrame';
import { usePluginStore } from '../../store/pluginStore';

const navigate = vi.fn();
const toast = { info: vi.fn(), success: vi.fn(), warning: vi.fn(), error: vi.fn() };
const invoke = vi.fn((..._args: unknown[]) => Promise.resolve({ ok: true }));
const wsListeners = new Set<(ev: Record<string, unknown>) => void>();

vi.mock('react-router-dom', () => ({ useNavigate: () => navigate }));
vi.mock('../shared/Toast', () => ({ useToast: () => toast }));
vi.mock('../../i18n', () => ({ useTranslation: () => ({ locale: 'en', t: (k: string) => k }) }));
vi.mock('../../store/authStore', () => ({ useAuthStore: (sel: (s: unknown) => unknown) => sel({ user: { id: 7, username: 'ada', avatar_url: null, role: 'admin' } }) }));
vi.mock('../../store/settingsStore', () => ({ useSettingsStore: (sel: (s: unknown) => unknown) => sel({ settings: { default_currency: 'EUR', time_format: '24h', distance_unit: 'metric', temperature_unit: 'celsius', blur_booking_codes: true } }) }));
vi.mock('../../api/client', () => ({ pluginsApi: { invoke: (id: string, sub: string, init?: unknown) => invoke(id, sub, init) } }));
vi.mock('../../api/websocket', () => ({
  addListener: (fn: (ev: Record<string, unknown>) => void) => wsListeners.add(fn),
  removeListener: (fn: (ev: Record<string, unknown>) => void) => wsListeners.delete(fn),
}));

function fromFrame(frame: HTMLIFrameElement, data: unknown) {
  window.dispatchEvent(new MessageEvent('message', { source: frame.contentWindow, data } as MessageEventInit));
}

afterEach(() => {
  cleanup();
  navigate.mockClear();
  Object.values(toast).forEach((f) => f.mockClear());
  invoke.mockClear();
  wsListeners.clear();
});

describe('PluginFrame', () => {
  it('FE-PLUGINS-FRAME-001: renders an opaque sandboxed iframe (no allow-same-origin)', () => {
    const { container } = render(<PluginFrame pluginId="demo" />);
    const iframe = container.querySelector('iframe')!;
    expect(iframe.getAttribute('src')).toBe('/plugin-frame/demo/index.html');
    const sandbox = iframe.getAttribute('sandbox') || '';
    expect(sandbox).toContain('allow-scripts');
    expect(sandbox).not.toContain('allow-same-origin');
  });

  it('FE-PLUGINS-FRAME-002: authenticates messages by sender window — a foreign source is ignored', () => {
    const { container } = render(<PluginFrame pluginId="demo" />);
    const iframe = container.querySelector('iframe')!;
    // message NOT from our iframe -> ignored
    window.dispatchEvent(new MessageEvent('message', { source: window, data: { type: 'trek:navigate', to: '/admin' } }));
    expect(navigate).not.toHaveBeenCalled();
    // message from our iframe -> handled
    fromFrame(iframe, { type: 'trek:navigate', to: '/dashboard' });
    expect(navigate).toHaveBeenCalledWith('/dashboard');
  });

  it('FE-PLUGINS-FRAME-003: blocks unsafe navigation targets and renders notifications as text', () => {
    const { container } = render(<PluginFrame pluginId="demo" />);
    const iframe = container.querySelector('iframe')!;
    fromFrame(iframe, { type: 'trek:navigate', to: '//evil.example' }); // protocol-relative
    expect(navigate).not.toHaveBeenCalled();
    fromFrame(iframe, { type: 'trek:notify', level: 'success', message: 'saved' });
    expect(toast.success).toHaveBeenCalledWith('saved');
  });

  it('FE-PLUGINS-FRAME-004: trek:invoke calls the host proxy and replies to the frame', async () => {
    const { container } = render(<PluginFrame pluginId="demo" />);
    const iframe = container.querySelector('iframe')!;
    const posted: unknown[] = [];
    // capture host->frame messages
    (iframe.contentWindow as unknown as { postMessage: (m: unknown) => void }).postMessage = (m: unknown) => posted.push(m);

    fromFrame(iframe, { type: 'trek:invoke', requestId: 'r1', sub: '/status', method: 'GET' });
    await waitFor(() => expect(invoke).toHaveBeenCalledWith('demo', '/status', { method: 'GET', body: undefined }));
    await waitFor(() => expect(posted.some((m) => (m as { type?: string }).type === 'trek:response')).toBe(true));
  });

  it('FE-PLUGINS-FRAME-005: context carries theme tokens, formats and non-secret display identity', () => {
    const { container } = render(<PluginFrame pluginId="demo" />);
    const iframe = container.querySelector('iframe')!;
    const posted: Array<Record<string, unknown>> = [];
    (iframe.contentWindow as unknown as { postMessage: (m: unknown) => void }).postMessage = (m: unknown) => posted.push(m as Record<string, unknown>);

    fromFrame(iframe, { type: 'trek:context:request' });

    const ctx = posted.find((m) => m.type === 'trek:context') as Record<string, unknown> | undefined;
    expect(ctx).toBeTruthy();
    expect(ctx!.tokens).toBeTruthy(); // resolved design tokens (empty {} in jsdom, but present)
    expect(ctx!.formats).toMatchObject({
      currency: 'EUR',
      timeFormat: '24h',
      distanceUnit: 'metric',
      temperatureUnit: 'celsius',
      blurBookingCodes: true,
    });
    // Display identity is present but carries NO secret (no email, role only as a boolean).
    expect(ctx!.user).toMatchObject({ name: 'ada', isAdmin: true });
    expect(JSON.stringify(ctx)).not.toContain('@'); // no email leaked
  });

  it('FE-PLUGINS-FRAME-008: a day-detail host passes the open day (and place stays null)', () => {
    const { container } = render(<PluginFrame pluginId="demo" tripId="1" dayId="12" />);
    const iframe = container.querySelector('iframe')!;
    const posted: Array<Record<string, unknown>> = [];
    (iframe.contentWindow as unknown as { postMessage: (m: unknown) => void }).postMessage = (m: unknown) => posted.push(m as Record<string, unknown>);

    fromFrame(iframe, { type: 'trek:context:request' });

    const ctx = posted.find((m) => m.type === 'trek:context') as Record<string, unknown> | undefined;
    expect(ctx).toBeTruthy();
    expect(ctx!.tripId).toBe('1');
    expect(ctx!.dayId).toBe('12');
    expect(ctx!.placeId).toBeNull();
  });

  it('FE-PLUGINS-FRAME-014: a reservation-detail host passes the open reservation (and day/place stay null)', () => {
    const { container } = render(<PluginFrame pluginId="demo" tripId="1" reservationId="88" />);
    const iframe = container.querySelector('iframe')!;
    const posted: Array<Record<string, unknown>> = [];
    (iframe.contentWindow as unknown as { postMessage: (m: unknown) => void }).postMessage = (m: unknown) => posted.push(m as Record<string, unknown>);

    fromFrame(iframe, { type: 'trek:context:request' });

    const ctx = posted.find((m) => m.type === 'trek:context') as Record<string, unknown> | undefined;
    expect(ctx).toBeTruthy();
    expect(ctx!.tripId).toBe('1');
    expect(ctx!.reservationId).toBe('88');
    expect(ctx!.dayId).toBeNull();
    expect(ctx!.placeId).toBeNull();
  });

  it('FE-PLUGINS-FRAME-006: context mirrors the host appearance state (scheme/density/flags)', () => {
    const { container } = render(<PluginFrame pluginId="demo" />);
    const iframe = container.querySelector('iframe')!;
    const posted: Array<Record<string, unknown>> = [];
    (iframe.contentWindow as unknown as { postMessage: (m: unknown) => void }).postMessage = (m: unknown) => posted.push(m as Record<string, unknown>);

    fromFrame(iframe, { type: 'trek:context:request' });

    const ctx = posted.find((m) => m.type === 'trek:context') as Record<string, unknown> | undefined;
    expect(ctx).toBeTruthy();
    // A plugin can honour the same accent/density/accessibility choices as the host.
    expect(ctx!.appearance).toMatchObject({
      scheme: 'default',
      density: 'comfortable',
      noTransparency: false,
      reducedMotion: false,
    });
  });

  it('FE-PLUGINS-FRAME-007: fill mode pins the frame to 100% height and ignores trek:resize', () => {
    const { container } = render(<PluginFrame pluginId="demo" fill />);
    const iframe = container.querySelector('iframe')!;
    act(() => { fromFrame(iframe, { type: 'trek:resize', height: 480 }); });
    expect(iframe.style.height).toBe('100%');
  });

  it('FE-PLUGINS-FRAME-008: without fill, trek:resize drives the frame height (widget self-sizing)', () => {
    const { container } = render(<PluginFrame pluginId="demo" />);
    const iframe = container.querySelector('iframe')!;
    act(() => { fromFrame(iframe, { type: 'trek:resize', height: 480 }); });
    expect(iframe.style.height).toBe('480px');
  });

  it('FE-PLUGINS-FRAME-009: trek:confirm renders the native dialog and answers over the bridge', async () => {
    const { container } = render(<PluginFrame pluginId="demo" />);
    const iframe = container.querySelector('iframe')!;
    const posted: Array<Record<string, unknown>> = [];
    (iframe.contentWindow as unknown as { postMessage: (m: unknown) => void }).postMessage = (m: unknown) => posted.push(m as Record<string, unknown>);

    fromFrame(iframe, { type: 'trek:confirm', requestId: 'c1', message: 'Delete everything?', confirmLabel: 'Yes, wipe it' });
    const confirmBtn = await screen.findByText('Yes, wipe it');
    fireEvent.click(confirmBtn);

    const result = posted.find((m) => m.type === 'trek:confirm:result') as Record<string, unknown> | undefined;
    expect(result).toMatchObject({ requestId: 'c1', confirmed: true });
  });

  it('FE-PLUGINS-FRAME-010: trek:openExternal opens only real web URLs in a noopener tab', () => {
    const open = vi.spyOn(window, 'open').mockReturnValue(null);
    const { container } = render(<PluginFrame pluginId="demo" />);
    const iframe = container.querySelector('iframe')!;

    fromFrame(iframe, { type: 'trek:openExternal', url: 'javascript:alert(1)' });
    fromFrame(iframe, { type: 'trek:openExternal', url: 'not a url' });
    expect(open).not.toHaveBeenCalled();

    fromFrame(iframe, { type: 'trek:openExternal', url: 'https://example.com/docs' });
    expect(open).toHaveBeenCalledWith('https://example.com/docs', '_blank', 'noopener,noreferrer');
    open.mockRestore();
  });

  it('FE-PLUGINS-FRAME-011: forwards core-event names for the trip in view, payload-free', () => {
    const { container } = render(<PluginFrame pluginId="demo" tripId="42" />);
    const iframe = container.querySelector('iframe')!;
    const posted: Array<Record<string, unknown>> = [];
    (iframe.contentWindow as unknown as { postMessage: (m: unknown) => void }).postMessage = (m: unknown) => posted.push(m as Record<string, unknown>);
    // The bridge only forwards to the original document (first load).
    fireEvent.load(iframe);

    expect(wsListeners.size).toBe(1);
    const emit = [...wsListeners][0];
    emit({ type: 'place_created', tripId: 99, place: { secret: true } }); // other trip -> dropped
    emit({ type: 'place_created', tripId: 42, place: { secret: true } });

    const events = posted.filter((m) => m.type === 'trek:event');
    expect(events).toHaveLength(1);
    expect(events[0]).toMatchObject({ event: 'place_created', tripId: '42' });
    expect(JSON.stringify(events[0])).not.toContain('secret'); // names only, never payloads
  });

  it('FE-PLUGINS-FRAME-012: trek:notify clamps a plugin-supplied duration', () => {
    const { container } = render(<PluginFrame pluginId="demo" />);
    const iframe = container.querySelector('iframe')!;
    fromFrame(iframe, { type: 'trek:notify', level: 'info', message: 'hi', duration: 999999 });
    expect(toast.info).toHaveBeenCalledWith('hi', 15000);
    // NaN must not slip through the clamp as a sticky toast.
    fromFrame(iframe, { type: 'trek:notify', level: 'info', message: 'ho', duration: NaN });
    expect(toast.info).toHaveBeenLastCalledWith('ho');
  });

  it('FE-PLUGINS-FRAME-013: swapping pluginId in place restarts the bridge for the new plugin', () => {
    const { container, rerender } = render(<PluginFrame pluginId="alpha" />);
    fireEvent.load(container.querySelector('iframe')!);

    rerender(<PluginFrame pluginId="beta" />);
    const next = container.querySelector('iframe')!; // keyed by pluginId -> fresh element
    expect(next.getAttribute('src')).toBe('/plugin-frame/beta/index.html');
    act(() => { fireEvent.load(next); });

    // Without the per-plugin reset this would be refused as a "navigated" frame.
    fromFrame(next, { type: 'trek:navigate', to: '/dashboard' });
    expect(navigate).toHaveBeenCalledWith('/dashboard');
  });

  describe('geolocation bridge (geolocation:read)', () => {
    const geo = {
      getCurrentPosition: vi.fn(),
      watchPosition: vi.fn((..._args: unknown[]) => 7),
      clearWatch: vi.fn(),
    };
    const grant = (granted: boolean) => {
      usePluginStore.setState({
        plugins: granted ? [{ id: 'demo', name: 'Demo', type: 'widget', icon: null, geolocation: true }] : [],
      });
    };
    beforeEach(() => {
      Object.defineProperty(navigator, 'geolocation', { value: geo, configurable: true });
      geo.getCurrentPosition.mockClear();
      geo.watchPosition.mockClear();
      geo.clearWatch.mockClear();
    });
    afterEach(() => { grant(false); });

    function mount(granted: boolean) {
      grant(granted);
      const { container, unmount } = render(<PluginFrame pluginId="demo" />);
      const iframe = container.querySelector('iframe')!;
      const posted: Array<Record<string, unknown>> = [];
      (iframe.contentWindow as unknown as { postMessage: (m: unknown) => void }).postMessage = (m: unknown) =>
        posted.push(m as Record<string, unknown>);
      return { iframe, posted, unmount };
    }

    it('FE-PLUGINS-FRAME-015: refuses an ungranted plugin without touching the browser API', () => {
      const { iframe, posted } = mount(false);
      fromFrame(iframe, { type: 'trek:geolocation', requestId: 'g1' });
      expect(posted.find((m) => m.type === 'trek:geolocation:result')).toMatchObject({ requestId: 'g1', error: 'forbidden' });
      expect(geo.getCurrentPosition).not.toHaveBeenCalled();
    });

    it('FE-PLUGINS-FRAME-016: a granted get posts plain position data into the frame', () => {
      geo.getCurrentPosition.mockImplementation((ok: (p: unknown) => void) =>
        ok({ coords: { latitude: 52.5, longitude: 13.4, accuracy: 9, heading: null, speed: null }, timestamp: 1234 }));
      const { iframe, posted } = mount(true);
      fromFrame(iframe, { type: 'trek:geolocation', requestId: 'g2' });
      expect(posted.find((m) => m.type === 'trek:geolocation:result')).toMatchObject({
        requestId: 'g2',
        position: { lat: 52.5, lng: 13.4, accuracy: 9, timestamp: 1234 },
      });
    });

    it('FE-PLUGINS-FRAME-017: watch streams updates and the GPS watch dies with the frame', () => {
      let tick: ((p: unknown) => void) | null = null;
      geo.watchPosition.mockImplementation((ok: (p: unknown) => void) => { tick = ok; return 7; });
      const { iframe, posted, unmount } = mount(true);

      fromFrame(iframe, { type: 'trek:geolocation', requestId: 'g3', action: 'watch' });
      expect(posted.find((m) => m.type === 'trek:geolocation:result')).toMatchObject({ requestId: 'g3', watching: true });
      act(() => tick!({ coords: { latitude: 1, longitude: 2, accuracy: 5, heading: null, speed: null }, timestamp: 1 }));
      expect(posted.find((m) => m.type === 'trek:geolocation:update')).toMatchObject({ position: { lat: 1, lng: 2 } });

      // Unmounting must never leave a live GPS watch behind.
      unmount();
      expect(geo.clearWatch).toHaveBeenCalledWith(7);
    });

    it('FE-PLUGINS-FRAME-018: clear stops the watch on request', () => {
      const { iframe, posted } = mount(true);
      fromFrame(iframe, { type: 'trek:geolocation', requestId: 'g4', action: 'watch' });
      fromFrame(iframe, { type: 'trek:geolocation', requestId: 'g5', action: 'clear' });
      expect(geo.clearWatch).toHaveBeenCalledWith(7);
      expect(posted.find((m) => m.type === 'trek:geolocation:result' && m.requestId === 'g5')).toMatchObject({ cleared: true });
    });

    it('FE-PLUGINS-FRAME-019: a running watch stops streaming the moment the grant is revoked', () => {
      let tick: ((p: unknown) => void) | null = null;
      geo.watchPosition.mockImplementation((ok: (p: unknown) => void) => { tick = ok; return 7; });
      const { iframe, posted } = mount(true);
      fromFrame(iframe, { type: 'trek:geolocation', requestId: 'g6', action: 'watch' });

      // Admin revokes geolocation:read while the frame stays mounted (re-render
      // updates the ref the watch callback reads).
      act(() => grant(false));
      const before = posted.length;
      act(() => tick!({ coords: { latitude: 3, longitude: 4, accuracy: 5, heading: null, speed: null }, timestamp: 2 }));
      // No further position leaks, and the OS watch is released.
      expect(posted.length).toBe(before);
      expect(geo.clearWatch).toHaveBeenCalledWith(7);
    });
  });
});