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

// Mock next-intl
vi.mock('next-intl', () => ({
  useTranslations: () => (key: string) => {
    const map: Record<string, string> = {
      'search.placeholder': 'Suchen...',
    };
    return map[key] ?? key;
  },
}));

// Must import after mocks
import { SearchWidget } from './search-widget';

const DEFAULT_PROVIDERS = [
  { id: 'google', name: 'Google', urlTemplate: 'https://www.google.com/search?q={query}', isDefault: true },
  { id: 'bing', name: 'Bing', urlTemplate: 'https://www.bing.com/search?q={query}', isDefault: true },
  { id: 'ddg', name: 'DuckDuckGo', urlTemplate: 'https://duckduckgo.com/?q={query}', isDefault: true },
];

describe('SearchWidget', () => {
  let windowOpenSpy: ReturnType<typeof vi.spyOn>;

  beforeEach(() => {
    windowOpenSpy = vi.spyOn(window, 'open').mockImplementation(() => null);
    // Mock fetch to return default providers
    vi.spyOn(globalThis, 'fetch').mockResolvedValue({
      ok: true,
      json: async () => DEFAULT_PROVIDERS,
    } as Response);
  });

  afterEach(() => {
    vi.restoreAllMocks();
  });

  it('renders provider dropdown, input, and search button', async () => {
    render(
      <SearchWidget instanceId="test-1" config={{}} isEditMode={false} />,
    );

    await waitFor(() => {
      expect(screen.getByRole('combobox')).toBeInTheDocument();
    });
    expect(screen.getByPlaceholderText('Suchen...')).toBeInTheDocument();
    expect(screen.getByRole('button')).toBeInTheDocument();
  });

  it('selecting Google and submitting "hello" opens correct URL in new tab', async () => {
    render(
      <SearchWidget instanceId="test-1" config={{}} isEditMode={false} />,
    );

    await waitFor(() => {
      expect(screen.getByRole('combobox')).toBeInTheDocument();
    });

    // Select Google (should be default)
    const select = screen.getByRole('combobox');
    fireEvent.change(select, { target: { value: 'google' } });

    // Type query
    const input = screen.getByPlaceholderText('Suchen...');
    fireEvent.change(input, { target: { value: 'hello' } });

    // Click search button
    fireEvent.click(screen.getByRole('button'));

    expect(windowOpenSpy).toHaveBeenCalledWith(
      'https://www.google.com/search?q=hello',
      '_blank',
      'noopener,noreferrer',
    );
  });

  it('Enter key in input triggers search', async () => {
    render(
      <SearchWidget instanceId="test-1" config={{}} isEditMode={false} />,
    );

    await waitFor(() => {
      expect(screen.getByRole('combobox')).toBeInTheDocument();
    });

    const input = screen.getByPlaceholderText('Suchen...');
    fireEvent.change(input, { target: { value: 'hello' } });
    fireEvent.keyDown(input, { key: 'Enter', code: 'Enter' });

    expect(windowOpenSpy).toHaveBeenCalledWith(
      'https://www.google.com/search?q=hello',
      '_blank',
      'noopener,noreferrer',
    );
  });

  it('encodes special characters in query', async () => {
    render(
      <SearchWidget instanceId="test-1" config={{}} isEditMode={false} />,
    );

    await waitFor(() => {
      expect(screen.getByRole('combobox')).toBeInTheDocument();
    });

    const input = screen.getByPlaceholderText('Suchen...');
    fireEvent.change(input, { target: { value: 'hello world & foo' } });
    fireEvent.click(screen.getByRole('button'));

    expect(windowOpenSpy).toHaveBeenCalledWith(
      'https://www.google.com/search?q=hello%20world%20%26%20foo',
      '_blank',
      'noopener,noreferrer',
    );
  });

  it('does not open window when query is empty', async () => {
    render(
      <SearchWidget instanceId="test-1" config={{}} isEditMode={false} />,
    );

    await waitFor(() => {
      expect(screen.getByRole('combobox')).toBeInTheDocument();
    });

    fireEvent.click(screen.getByRole('button'));

    expect(windowOpenSpy).not.toHaveBeenCalled();
  });
});