import { beforeEach, describe, expect, it, vi } from 'vitest';
import { act, fireEvent, render, screen, waitFor } from '@testing-library/react';
import { TitleBar } from '@/components/layout/TitleBar';
import { useSettingsStore } from '@/stores/settings';

const invokeIpcMock = vi.hoisted(() => vi.fn());

vi.mock('@/lib/api-client', () => ({
  invokeIpc: (...args: unknown[]) => invokeIpcMock(...args),
}));

describe('TitleBar platform behavior', () => {
  beforeEach(() => {
    invokeIpcMock.mockReset();
    invokeIpcMock.mockResolvedValue(false);
    useSettingsStore.setState({ sidebarCollapsed: false });
  });

  it('extends the product surfaces through the macOS title bar', () => {
    window.electron.platform = 'darwin';

    render(<TitleBar integrated />);

    expect(screen.getByTestId('product-titlebar')).not.toHaveClass('border-b');
    expect(screen.getByTestId('product-titlebar')).toHaveClass('glass-surface', 'bg-background/70');
    expect(screen.getByTestId('titlebar-sidebar-surface')).toHaveClass('w-64', 'bg-surface-sidebar', 'border-r');
    expect(screen.getByTestId('titlebar-main-surface')).toHaveClass('border-b');
    expect(screen.getByTestId('titlebar-project-context')).not.toHaveClass('border-l');
    expect(screen.getByTestId('titlebar-project-context')).toHaveClass('translate-y-[3px]');
    expect(screen.getByTestId('titlebar-logo').querySelector('img')).toHaveAttribute('data-logo-source', 'original-wordmark');
    expect(screen.getByTestId('titlebar-sidebar-toggle')).toHaveClass('translate-y-[3px]');
    expect(screen.getByTestId('titlebar-project-context')).toHaveTextContent('Makelore 工作台');
    expect(screen.queryByRole('button', { name: '打开项目位置' })).not.toBeInTheDocument();
    expect(screen.queryByRole('button', { name: '后退' })).not.toBeInTheDocument();
    expect(screen.queryByRole('button', { name: '前进' })).not.toBeInTheDocument();
    fireEvent.click(screen.getByRole('button', { name: '折叠侧栏' }));
    expect(useSettingsStore.getState().sidebarCollapsed).toBe(true);

    act(() => useSettingsStore.setState({ sidebarCollapsed: true }));

    expect(screen.getByTestId('titlebar-sidebar-surface')).toHaveClass('w-[132px]');
    expect(screen.getByTestId('titlebar-sidebar-surface')).toHaveClass('border-r-0');
    expect(screen.getByTestId('product-titlebar')).toHaveClass('bg-background');
    expect(screen.getByTestId('titlebar-sidebar-surface')).toHaveClass('bg-background');
    expect(screen.getByTestId('product-titlebar')).toHaveClass('border-b');
    expect(screen.getByTestId('titlebar-main-surface')).toHaveClass('border-b-0');
  });

  it('renders macOS drag region', () => {
    window.electron.platform = 'darwin';

    const { container } = render(<TitleBar />);

    expect(container.querySelector('.drag-region')).toBeInTheDocument();
    expect(screen.queryByTitle('Minimize')).not.toBeInTheDocument();
    expect(invokeIpcMock).not.toHaveBeenCalled();
  });

  it('previews the collapsed sidebar on hover and pins it on click', () => {
    window.electron.platform = 'darwin';
    useSettingsStore.setState({ sidebarCollapsed: true });
    const onSidebarPeekChange = vi.fn();

    render(<TitleBar integrated onSidebarPeekChange={onSidebarPeekChange} />);

    const toggle = screen.getByTestId('titlebar-sidebar-toggle');
    fireEvent.pointerEnter(toggle);
    expect(onSidebarPeekChange).toHaveBeenCalledWith(true);

    fireEvent.pointerLeave(toggle);
    expect(onSidebarPeekChange).toHaveBeenCalledWith(false);

    fireEvent.click(toggle);
    expect(useSettingsStore.getState().sidebarCollapsed).toBe(false);
  });

  it('renders custom controls on Windows', async () => {
    window.electron.platform = 'win32';

    render(<TitleBar />);

    expect(screen.getByTitle('Minimize')).toBeInTheDocument();
    expect(screen.getByTitle('Maximize')).toBeInTheDocument();
    expect(screen.getByTitle('Close')).toBeInTheDocument();

    await waitFor(() => {
      expect(invokeIpcMock).toHaveBeenCalledWith('window:isMaximized');
    });
  });

  it('renders no custom title bar on Linux', () => {
    window.electron.platform = 'linux';

    const { container } = render(<TitleBar />);

    expect(container.firstChild).toBeNull();
    expect(screen.queryByTitle('Minimize')).not.toBeInTheDocument();
    expect(invokeIpcMock).not.toHaveBeenCalled();
  });
});
