/**
 * Application Menu Configuration
 * Creates the native application menu for macOS/Windows/Linux
 */
import { Menu, app, BrowserWindow } from 'electron';
import { sendWhenWindowReady, showMainWindow, type EnsureMainWindow } from './window-provider';

/**
 * Create application menu
 */
export function createMenu(ensureMainWindow?: EnsureMainWindow): void {
  const isMac = process.platform === 'darwin';
  const navigate = (route: string): void => {
    const window = ensureMainWindow ? ensureMainWindow() : BrowserWindow.getFocusedWindow();
    showMainWindow(window);
    sendWhenWindowReady(window, 'navigate', route);
  };

  const template: Electron.MenuItemConstructorOptions[] = [
    // App menu (macOS only)
    ...(isMac
      ? [
          {
            label: app.name,
            submenu: [
              { role: 'about' as const },
              { type: 'separator' as const },
              {
                label: 'Preferences...',
                accelerator: 'Cmd+,',
                click: () => navigate('/settings'),
              },
              { type: 'separator' as const },
              { role: 'services' as const },
              { type: 'separator' as const },
              { role: 'hide' as const },
              { role: 'hideOthers' as const },
              { role: 'unhide' as const },
              { type: 'separator' as const },
              { role: 'quit' as const },
            ],
          },
        ]
      : []),

    // File menu
    {
      label: 'File',
      submenu: [
        {
          label: 'New Chat',
          accelerator: 'CmdOrCtrl+N',
          click: () => navigate('/'),
        },
        { type: 'separator' },
        isMac ? { role: 'close' } : { role: 'quit' },
      ],
    },

    // Edit menu
    {
      label: 'Edit',
      submenu: [
        { role: 'undo' },
        { role: 'redo' },
        { type: 'separator' },
        { role: 'cut' },
        { role: 'copy' },
        { role: 'paste' },
        ...(isMac
          ? [
              { role: 'pasteAndMatchStyle' as const },
              { role: 'delete' as const },
              { role: 'selectAll' as const },
            ]
          : [
              { role: 'delete' as const },
              { type: 'separator' as const },
              { role: 'selectAll' as const },
            ]),
      ],
    },

    // View menu
    {
      label: 'View',
      submenu: [
        { role: 'reload' },
        { role: 'forceReload' },
        { role: 'toggleDevTools' },
        { type: 'separator' },
        { role: 'resetZoom' },
        { role: 'zoomIn' },
        { role: 'zoomOut' },
        { type: 'separator' },
        { role: 'togglefullscreen' },
      ],
    },

    // Navigate menu
    {
      label: 'Navigate',
      submenu: [
        {
          label: 'Dashboard',
          accelerator: 'CmdOrCtrl+1',
          click: () => navigate('/'),
        },
        {
          label: 'Sessions',
          accelerator: 'CmdOrCtrl+2',
          click: () => navigate('/sessions'),
        },
        {
          label: 'Projects',
          accelerator: 'CmdOrCtrl+3',
          click: () => navigate('/projects'),
        },
        {
          label: 'Models',
          accelerator: 'CmdOrCtrl+4',
          click: () => navigate('/models'),
        },
        {
          label: 'Settings',
          accelerator: isMac ? 'Cmd+,' : 'Ctrl+,',
          click: () => navigate('/settings'),
        },
      ],
    },

    // Window menu
    {
      label: 'Window',
      submenu: [
        { role: 'minimize' },
        { role: 'zoom' },
        ...(isMac
          ? [
              { type: 'separator' as const },
              { role: 'front' as const },
              { type: 'separator' as const },
              { role: 'window' as const },
            ]
          : [{ role: 'close' as const }]),
      ],
    },
  ];

  const menu = Menu.buildFromTemplate(template);
  Menu.setApplicationMenu(menu);
}