import { render, screen, fireEvent, waitFor } from '@testing-library/react';
import { describe, it, expect, vi, beforeEach } from 'vitest';
import Dashboard from './page';
import { QueryClient, QueryClientProvider } from '@tanstack/react-query';

// Mock next/navigation
vi.mock('next/navigation', () => ({
  useRouter: () => ({
    push: vi.fn(),
  }),
}));

// Mock ResizeObserver
global.ResizeObserver = class ResizeObserver {
  observe() {}
  unobserve() {}
  disconnect() {}
};

// Mock fetch
global.fetch = vi.fn();

const createTestQueryClient = () => new QueryClient({
  defaultOptions: {
    queries: {
      retry: false,
    },
  },
});

describe('Dashboard', () => {
  beforeEach(() => {
    vi.clearAllMocks();
    
    // Mock Auth Response
    (global.fetch as any).mockImplementation((url: string) => {
      if (url === '/api/auth') {
        return Promise.resolve({
          json: () => Promise.resolve({ authenticated: true, token: 'test-token' }),
        });
      }
      if (url === '/api/habits') {
        return Promise.resolve({
          ok: true,
          json: () => Promise.resolve({
            habits: [
              {
                id: 1,
                name: 'Test Habit',
                type: 'neutral',
                totalLogs: 5,
                logsLastWeek: 2,
                logsLastMonth: 5,
                createdAt: new Date().toISOString(),
                lastLoggedAt: new Date().toISOString(),
              }
            ]
          }),
        });
      }
      return Promise.resolve({ ok: true, json: () => Promise.resolve({}) });
    });
  });

  it('renders habits correctly', async () => {
    render(
      <QueryClientProvider client={createTestQueryClient()}>
        <Dashboard />
      </QueryClientProvider>
    );

    await waitFor(() => {
      expect(screen.getByText('Test Habit')).toBeInTheDocument();
    });
  });

  it('opens edit dialog when edit button is clicked', async () => {
    render(
      <QueryClientProvider client={createTestQueryClient()}>
        <Dashboard />
      </QueryClientProvider>
    );

    await waitFor(() => {
      expect(screen.getByText('Test Habit')).toBeInTheDocument();
    });

    const editBtn = screen.getByTestId('edit-habit-1');
    fireEvent.click(editBtn);

    await waitFor(() => {
      expect(screen.getByRole('dialog')).toBeInTheDocument();
      expect(screen.getByText('Edit Habit')).toBeInTheDocument();
      expect(screen.getByDisplayValue('Test Habit')).toBeInTheDocument();
    });
  });

  it('opens archive confirmation when archive button is clicked', async () => {
    render(
      <QueryClientProvider client={createTestQueryClient()}>
        <Dashboard />
      </QueryClientProvider>
    );

    await waitFor(() => {
      expect(screen.getByText('Test Habit')).toBeInTheDocument();
    });

    // Open Edit Dialog
    fireEvent.click(screen.getByTestId('edit-habit-1'));
    await waitFor(() => screen.getByRole('dialog'));

    // Click Archive
    fireEvent.click(screen.getByText('Archive Habit'));

    await waitFor(() => {
      expect(screen.getByText('Confirm Delete')).toBeInTheDocument();
    });
  });
});