import { render, screen, fireEvent, waitFor } from '@testing-library/react';
import { Header } from '../Header';
import { useAuthStore } from '@/stores/authStore';
import { usePathname } from 'next/navigation';

// Mock Next.js navigation
jest.mock('next/navigation', () => ({
  usePathname: jest.fn(),
}));

// Mock auth store
jest.mock('@/stores/authStore', () => ({
  useAuthStore: jest.fn(),
}));

describe('Header Component', () => {
  const mockLogout = jest.fn();
  const mockUser = {
    user_id: 1,
    email: 'test@example.com',
    firstName: 'John',
    lastName: 'Doe',
  };

  beforeEach(() => {
    jest.clearAllMocks();
    (usePathname as jest.Mock).mockReturnValue('/dashboard');
    (useAuthStore as unknown as jest.Mock).mockReturnValue({
      user: mockUser,
      logout: mockLogout,
    });
  });

  it('renders the WellNuo logo and brand', () => {
    render(<Header />);
    expect(screen.getByText('WellNuo')).toBeInTheDocument();
  });

  it('renders navigation items', () => {
    render(<Header />);
    expect(screen.getAllByText('Dashboard')).toHaveLength(1);
    expect(screen.getAllByText('Loved Ones')).toHaveLength(1);
  });

  it('highlights active navigation item', () => {
    render(<Header />);
    const dashboardLink = screen.getAllByText('Dashboard')[0].closest('a');
    expect(dashboardLink).toHaveClass('text-blue-600');
  });

  it('displays user initials in profile button', () => {
    render(<Header />);
    // Desktop profile button shows initials
    expect(screen.getByText('JD')).toBeInTheDocument();
  });

  it('displays user full name on desktop', () => {
    render(<Header />);
    expect(screen.getByText('John Doe')).toBeInTheDocument();
  });

  it('opens profile dropdown when clicked', async () => {
    render(<Header />);

    // Get profile button (not the mobile menu button)
    const buttons = screen.getAllByRole('button', { expanded: false });
    const profileButton = buttons.find(btn => btn.getAttribute('aria-haspopup') === 'true');

    if (!profileButton) throw new Error('Profile button not found');

    fireEvent.click(profileButton);

    await waitFor(() => {
      expect(screen.getByText('Profile Settings')).toBeInTheDocument();
      expect(screen.getByText('Sign Out')).toBeInTheDocument();
    });
  });

  it('calls logout when Sign Out is clicked in dropdown', async () => {
    render(<Header />);

    // Open dropdown
    const buttons = screen.getAllByRole('button', { expanded: false });
    const profileButton = buttons.find(btn => btn.getAttribute('aria-haspopup') === 'true');
    if (!profileButton) throw new Error('Profile button not found');

    fireEvent.click(profileButton);

    // Click Sign Out in dropdown (not mobile menu)
    await waitFor(() => {
      const signOutButtons = screen.getAllByRole('button', { name: /sign out/i });
      fireEvent.click(signOutButtons[0]);
    });

    expect(mockLogout).toHaveBeenCalled();
  });

  it('toggles mobile menu', async () => {
    render(<Header />);

    const menuButton = screen.getByLabelText('Toggle menu');
    fireEvent.click(menuButton);

    await waitFor(() => {
      // Mobile menu should show navigation items
      expect(screen.getByText('Profile Settings')).toBeInTheDocument();
    });

    // Close menu
    fireEvent.click(menuButton);
  });

  it('displays user email when no first/last name', () => {
    (useAuthStore as unknown as jest.Mock).mockReturnValue({
      user: { user_id: 1, email: 'test@example.com' },
      logout: mockLogout,
    });

    render(<Header />);
    // Email displayed in profile section
    expect(screen.getByText('test@example.com')).toBeInTheDocument();
  });

  it('displays fallback initials when no user data', () => {
    (useAuthStore as unknown as jest.Mock).mockReturnValue({
      user: { user_id: 1 },
      logout: mockLogout,
    });

    render(<Header />);
    expect(screen.getByText('?')).toBeInTheDocument();
  });

  it('closes dropdown when clicking outside', async () => {
    render(<Header />);

    // Open dropdown
    const buttons = screen.getAllByRole('button', { expanded: false });
    const profileButton = buttons.find(btn => btn.getAttribute('aria-haspopup') === 'true');
    if (!profileButton) throw new Error('Profile button not found');

    fireEvent.click(profileButton);

    await waitFor(() => {
      expect(screen.getByText('Profile Settings')).toBeInTheDocument();
    });

    // Click outside
    fireEvent.mouseDown(document.body);

    await waitFor(() => {
      expect(screen.queryByText('Profile Settings')).not.toBeInTheDocument();
    });
  });
});