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

import App from '../../App';
import { uploadService } from '../../lib/uploadService';

const { useAuthMock } = vi.hoisted(() => ({
  useAuthMock: vi.fn(),
}));

vi.mock('../../contexts/AuthContext', () => ({
  useAuth: () => useAuthMock(),
}));

vi.mock('../../contexts/LanguageContext', () => ({
  useLanguage: () => ({
    t: {
      common: { loading: '加载中', processing: '处理中' },
      alerts: {
        taskTimeout: '超时',
        networkError: '网络错误',
        uploadFailed: '上传失败',
      },
    },
  }),
}));

vi.mock('../../lib/uploadService', () => ({
  uploadService: {
    getTaskList: vi.fn().mockResolvedValue({ task_list: [], total: 0 }),
    getTaskResult: vi.fn(),
    calculateMD5: vi.fn(),
    uploadFile: vi.fn(),
    createRecognitionTask: vi.fn(),
  },
}));

vi.mock('../../components/Navbar', () => ({
  default: () => <div>navbar</div>,
}));

vi.mock('../../components/LeftSidebar', () => ({
  default: ({
    onUploadClick,
    onRequireAuth,
    canUploadAnonymously,
  }: {
    onUploadClick: () => void;
    onRequireAuth: () => void;
    canUploadAnonymously: boolean;
  }) => (
    <div>
      <button onClick={onUploadClick}>open-upload</button>
      <button onClick={onRequireAuth}>open-auth</button>
      <span>{canUploadAnonymously ? 'guest-allowed' : 'guest-blocked'}</span>
    </div>
  ),
}));

vi.mock('../../components/FilePreview', () => ({
  default: ({ file }: { file: { id: string } | null }) => <div>{file ? `preview:${file.id}` : 'preview-empty'}</div>,
}));

vi.mock('../../components/ResultPanel', () => ({
  default: () => <div>result</div>,
}));

vi.mock('../../components/UploadModal', () => ({
  default: () => <div>upload-modal</div>,
}));

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

vi.mock('../../components/AuthModal', () => ({
  default: () => <div>auth-modal</div>,
}));

describe('App anonymous usage limit', () => {
  beforeEach(() => {
    vi.clearAllMocks();
    localStorage.clear();
    localStorage.setItem('hasSeenGuide', 'true');
    useAuthMock.mockReturnValue({
      user: null,
      initializing: false,
    });
  });

  it('allows anonymous upload before the limit', () => {
    localStorage.setItem('texpixel_guest_usage_count', '2');

    render(<App />);

    expect(screen.getByText('guest-allowed')).toBeInTheDocument();
    fireEvent.click(screen.getByText('open-upload'));

    expect(screen.getByText('upload-modal')).toBeInTheDocument();
  });

  it('forces login after three anonymous uses', () => {
    localStorage.setItem('texpixel_guest_usage_count', '3');

    render(<App />);

    expect(screen.getByText('guest-blocked')).toBeInTheDocument();
    fireEvent.click(screen.getByText('open-upload'));

    expect(screen.getByText('auth-modal')).toBeInTheDocument();
    expect(screen.queryByText('upload-modal')).not.toBeInTheDocument();
  });
});

describe('App initial selection', () => {
  beforeEach(() => {
    vi.clearAllMocks();
    localStorage.clear();
    localStorage.setItem('hasSeenGuide', 'true');
  });

  it('does not auto-select the first history record on initial load', async () => {
    useAuthMock.mockReturnValue({
      user: { id: 'u1' },
      initializing: false,
    });

    vi.mocked(uploadService.getTaskList).mockResolvedValue({
      total: 1,
      task_list: [
        {
          task_id: 'task-1',
          file_name: 'sample.png',
          status: 2,
          origin_url: 'https://example.com/sample.png',
          task_type: 'FORMULA',
          created_at: '2026-03-06T00:00:00Z',
          latex: '',
          markdown: 'content',
          mathml: '',
          mml: '',
          image_blob: '',
          docx_url: '',
          pdf_url: '',
        },
      ],
    });

    render(<App />);

    await waitFor(() => {
      expect(uploadService.getTaskList).toHaveBeenCalled();
    });

    expect(screen.getByText('preview-empty')).toBeInTheDocument();
    expect(screen.queryByText('preview:task-1')).not.toBeInTheDocument();
  });
});