import React from 'react';
import { render, screen, fireEvent, waitFor } from '@testing-library/react';
import '@testing-library/jest-dom';
import { useParams } from 'react-router-dom';
import { useSession, SessionState } from '../src/hooks/useSession';
import SessionPage from '../src/pages/SessionPage';

// Mock the useParams hook
jest.mock('react-router-dom', () => ({
  ...jest.requireActual('react-router-dom'),
  useParams: jest.fn(),
}));

// Mock the useSession hook
jest.mock('../src/hooks/useSession', () => ({
  ...jest.requireActual('../src/hooks/useSession'),
  useSession: jest.fn(),
  SessionState: jest.requireActual('../src/hooks/useSession').SessionState,
}));

// Mock the Clipboard API
Object.defineProperty(navigator, 'clipboard', {
  value: {
    writeText: jest.fn(),
  },
  writable: true,
});

describe('SessionPage functionality and readability', () => {
  const mockSession = {
    sessionId: 'test-session-id',
    topic: 'Test Session Topic',
    description: 'Test Description',
    expectedResponses: 2,
    submittedCount: 0,
    state: SessionState.GATHERING,
    responses: {},
    finalResult: null,
  };

  beforeEach(() => {
    (useParams as jest.Mock).mockReturnValue({ sessionId: 'test-session-id' });
    (useSession as jest.Mock).mockReturnValue([
      mockSession,
      jest.fn(),
      jest.fn(),
      'client123',
      null,
    ]);
    jest.clearAllMocks();
  });

  it('renders without crashing', () => {
    render(<SessionPage />);
    expect(screen.getByText('Test Session Topic')).toBeInTheDocument();
  });

  it('should not display "Session:" prefix for the session topic', () => {
    render(<SessionPage />);
    expect(screen.queryByText(/Session: /i)).not.toBeInTheDocument();
  });

  it('should not use placeholders in input fields and display validation rules', () => {
    // Mock session to be in SETUP state for this test
    (useSession as jest.Mock).mockReturnValue([
      { ...mockSession, state: SessionState.SETUP },
      jest.fn(),
      jest.fn(),
      'client123',
      null,
    ]);
    render(<SessionPage />);
    expect(screen.queryByPlaceholderText(/Session Topic/i)).not.toBeInTheDocument();
    expect(screen.queryByPlaceholderText(/Number of Expected Responses/i)).not.toBeInTheDocument();
  });

  it('should hide the session status display', () => {
    render(<SessionPage />);
    expect(screen.queryByText(/Status:/i)).not.toBeInTheDocument();
  });

  it('should display the Copy Link button when not in SETUP state', () => {
    render(<SessionPage />);
    expect(screen.getByRole('button', { name: /copy link/i })).toBeInTheDocument();
    expect(screen.getByTestId('ContentCopyIcon')).toBeInTheDocument();
  });

  it('should copy the session URL to clipboard when Copy Link button is clicked', async () => {
    render(<SessionPage />);
    const copyButton = screen.getByRole('button', { name: /copy link/i });
    fireEvent.click(copyButton);

    await waitFor(() => {
      expect(navigator.clipboard.writeText).toHaveBeenCalledTimes(1);
      expect(navigator.clipboard.writeText).toHaveBeenCalledWith(window.location.href);
      expect(screen.getByRole('button', { name: /copied!/i })).toBeInTheDocument();
    });
  });

  // Placeholder for responsive tests
  it('should adapt layout for mobile view', () => {
    // Simulate mobile viewport and check for specific layout changes
  });

  // Placeholder for touch functionality tests
  it('should handle touch events correctly', () => {
    // Simulate touch events and verify component behavior
  });
});