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

const mockRouterPush = vi.fn();
const mockRouterBack = vi.fn();

vi.mock('next/router', () => ({
  useRouter: () => ({
    push: mockRouterPush,
    back: mockRouterBack,
    pathname: '/scanner',
    asPath: '/scanner',
    query: {},
    prefetch: vi.fn().mockResolvedValue(undefined),
    events: { on: vi.fn(), off: vi.fn(), emit: vi.fn() },
  }),
}));

vi.mock('next/link', () => ({
  __esModule: true,
  default: ({ href, children, ...rest }) => (
    <a href={typeof href === 'string' ? href : ''} {...rest}>
      {children}
    </a>
  ),
}));

vi.mock('../../lib/theme-context', () => ({
  useTheme: () => ({ theme: 'light', toggleTheme: vi.fn() }),
}));

const layoutPropsRef = { current: null };

vi.mock('../../components/Layout', () => ({
  default: ({ children, chrome, user }) => {
    layoutPropsRef.current = { chrome, user };
    return (
      <div data-testid="layout" data-chrome={chrome}>
        {children}
      </div>
    );
  },
}));

vi.mock('../../components/scanner/ScannerCamera', () => ({
  default: ({ variant }) => (
    <div data-testid="scanner-camera" data-variant={variant} />
  ),
}));

vi.mock('../../components/scanner/ScannerCheckoutSheet', () => ({
  default: () => <div data-testid="scanner-checkout-sheet" />,
}));

vi.mock('../../components/scanner/ScannerResultPanel', () => ({
  default: () => <div data-testid="scanner-result-panel" />,
}));

vi.mock('../../components/scanner/ScannerHistoryStrip', () => ({
  default: () => <div data-testid="scanner-history-strip" />,
  TAB_RECENT: 'recent',
  TAB_QUEUE: 'queue',
}));

vi.mock('../../components/scanner/ScannerTips', () => ({
  default: () => <button type="button">Scanner Tips</button>,
}));

vi.mock('../../components/scanner/ScannerToast', () => ({
  default: () => null,
}));

const queueFixture = {
  scannedCards: [],
  collections: [],
  selectedCards: new Set(),
  isProcessing: false,
  addingCardIds: new Set(),
  ownershipMap: {},
  unprocessedCount: 0,
  handleCardScanned: vi.fn(),
  updateCardMetadata: vi.fn(),
  addSingleCardToOwned: vi.fn(async () => true),
  addSingleCardToCollection: vi.fn(async () => true),
  commitSelectedToCollection: vi.fn(async () => []),
  commitSelectedToOwned: vi.fn(async () => []),
  clearScannedCards: vi.fn(),
};

const cameraFixture = {
  videoRef: { current: null },
  canvasRef: { current: null },
  videoDevices: [{ deviceId: 'cam-1', label: 'FaceTime HD Camera' }],
  selectedDeviceId: 'cam-1',
  setSelectedDeviceId: vi.fn(),
  devicePickerStatus: 'ready',
  devicePickerMessage: '',
};

const identificationFixture = {
  disambiguation: null,
  isIdentifying: false,
  identifyFromGalleryFile: vi.fn(async () => {}),
};

vi.mock('../../lib/use-auth', () => ({
  useAuth: () => ({
    user: { email: 'scanner@test.com', role: 'user' },
    loading: false,
  }),
}));

vi.mock('../../lib/use-scanner-session.js', () => ({
  useScannerSession: () => ({
    scanDefaults: { condition: 'NM', isFoil: false },
  }),
}));

vi.mock('../../lib/use-scanner-queue.js', () => ({
  useScannerQueue: () => queueFixture,
}));

vi.mock('../../lib/use-camera-scanner.js', () => ({
  useCameraScanner: () => cameraFixture,
}));

vi.mock('../../lib/use-scanner-identification.js', () => ({
  useScannerIdentification: () => identificationFixture,
}));

vi.mock('../../lib/scanner-session.js', () => ({
  clearScannerCartStorage: vi.fn(),
}));

import Scanner from '../../pages/scanner.js';

function setMatchMedia(matches) {
  window.matchMedia = vi.fn((query) => ({
    matches,
    media: query,
    addEventListener: vi.fn(),
    removeEventListener: vi.fn(),
  }));
}

describe('Scanner page viewport composition', () => {
  beforeEach(() => {
    layoutPropsRef.current = null;
    vi.clearAllMocks();
  });

  afterEach(() => cleanup());

  it('uses immersive Layout chrome and hides workstation surfaces on mobile', () => {
    setMatchMedia(false);

    render(<Scanner />);

    expect(layoutPropsRef.current?.chrome).toBe('immersive');
    expect(screen.getByTestId('scanner-camera').getAttribute('data-variant')).toBe('default');
    expect(screen.queryByTestId('scanner-result-panel')).toBeNull();
    expect(screen.queryByTestId('scanner-history-strip')).toBeNull();
    expect(screen.queryByTestId('scanner-checkout-sheet')).toBeNull();
    expect(screen.queryByRole('button', { name: 'Scanner Tips' })).toBeNull();
  });

  it('uses default Layout chrome and mounts workstation surfaces at md+', () => {
    setMatchMedia(true);

    render(<Scanner />);

    expect(layoutPropsRef.current?.chrome).toBe('default');
    expect(screen.getByTestId('scanner-camera').getAttribute('data-variant')).toBe('workstation');
    expect(screen.getByTestId('scanner-result-panel')).toBeTruthy();
    expect(screen.getByTestId('scanner-history-strip')).toBeTruthy();
    expect(screen.getByRole('button', { name: 'Scanner Tips' })).toBeTruthy();
    expect(screen.getByLabelText('Camera')).toBeTruthy();
    expect(screen.getByRole('button', { name: 'Upload Image' })).toBeTruthy();
    expect(screen.getByRole('button', { name: 'Batch Scan' })).toBeTruthy();
    expect(screen.getByRole('switch', { name: 'Auto-detect' })).toBeTruthy();
    expect(screen.queryByTestId('scanner-checkout-sheet')).toBeNull();
  });
});