import { ipcMain, type BrowserWindow } from 'electron';

export function registerWindowFullscreenHandlers(
  requireWindow: (event: Electron.IpcMainInvokeEvent) => BrowserWindow,
): (window: BrowserWindow) => void {
  ipcMain.handle('window:isFullScreen', (event) => requireWindow(event).isFullScreen());

  const boundWindows = new WeakSet<BrowserWindow>();
  return (window: BrowserWindow): void => {
    if (window.isDestroyed() || window.webContents.isDestroyed() || boundWindows.has(window)) return;
    boundWindows.add(window);

    const notify = (fullscreen: boolean): void => {
      if (window.isDestroyed() || window.webContents.isDestroyed()) return;
      window.webContents.send('window:fullscreen-changed', fullscreen);
    };
    window.on('enter-full-screen', () => notify(true));
    window.on('leave-full-screen', () => notify(false));
  };
}