import { app, Menu } from 'electron';

import { revealLogFile } from '../logger';
import { checkForUpdatesAndNotify } from '../updater';
import { isMacOS } from '../utils';
import { applicationMenuSubjects } from './subject';

// Unique id for menuitems
const MENUITEM_NEW_PAGE = 'affine:new-page';

export function createApplicationMenu() {
  const isMac = isMacOS();

  // Electron menu cannot be modified
  // You have to copy the complete default menu template event if you want to add a single custom item
  // See https://www.electronjs.org/docs/latest/api/menu#examples
  const template = [
    // { role: 'appMenu' }
    ...(isMac
      ? [
          {
            label: app.name,
            submenu: [
              { role: 'about' },
              { type: 'separator' },
              { role: 'services' },
              { type: 'separator' },
              { role: 'hide' },
              { role: 'hideOthers' },
              { role: 'unhide' },
              { type: 'separator' },
              { role: 'quit' },
            ],
          },
        ]
      : []),
    // { role: 'fileMenu' }
    {
      label: 'File',
      submenu: [
        {
          id: MENUITEM_NEW_PAGE,
          label: 'New Page',
          accelerator: isMac ? 'Cmd+N' : 'Ctrl+N',
          click: () => {
            applicationMenuSubjects.newPageAction.next();
          },
        },
        { type: 'separator' },
        isMac ? { role: 'close' } : { role: 'quit' },
      ],
    },
    // { role: 'editMenu' }
    {
      label: 'Edit',
      submenu: [
        { role: 'undo' },
        { role: 'redo' },
        { type: 'separator' },
        { role: 'cut' },
        { role: 'copy' },
        { role: 'paste' },
        ...(isMac
          ? [
              { role: 'pasteAndMatchStyle' },
              { role: 'delete' },
              { role: 'selectAll' },
              { type: 'separator' },
              {
                label: 'Speech',
                submenu: [{ role: 'startSpeaking' }, { role: 'stopSpeaking' }],
              },
            ]
          : [{ role: 'delete' }, { type: 'separator' }, { role: 'selectAll' }]),
      ],
    },
    // { role: 'viewMenu' }
    {
      label: 'View',
      submenu: [
        { role: 'reload' },
        { role: 'forceReload' },
        { role: 'toggleDevTools' },
        { type: 'separator' },
        { role: 'resetZoom' },
        { role: 'zoomIn' },
        { role: 'zoomOut' },
        { type: 'separator' },
        { role: 'togglefullscreen' },
      ],
    },
    // { role: 'windowMenu' }
    {
      label: 'Window',
      submenu: [
        { role: 'minimize' },
        { role: 'zoom' },
        ...(isMac
          ? [
              { type: 'separator' },
              { role: 'front' },
              { type: 'separator' },
              { role: 'window' },
            ]
          : [{ role: 'close' }]),
      ],
    },
    {
      role: 'help',
      submenu: [
        {
          label: 'Learn More',
          click: async () => {
            // eslint-disable-next-line @typescript-eslint/no-var-requires
            const { shell } = require('electron');
            await shell.openExternal('https://affine.pro/');
          },
        },
        {
          label: 'Open log file',
          click: async () => {
            await revealLogFile();
          },
        },
        {
          label: 'Check for Updates',
          click: async () => {
            await checkForUpdatesAndNotify(true);
          },
        },
      ],
    },
  ];

  // @ts-expect-error: The snippet is copied from Electron official docs.
  //                   It's working as expected. No idea why it contains type errors.
  //                   Just ignore for now.
  const menu = Menu.buildFromTemplate(template);
  Menu.setApplicationMenu(menu);

  return menu;
}
