/** Video Picture-in-Picture helpers (Chromium/Safari; no-ops elsewhere).
 *  Kiosk note: PiP is skipped on the WM-less kiosk X session by callers that
 *  care — an unmanaged popup there is unusable (docs/tv-input-iframe-apps.md
 *  sibling investigation, task #18). */

export const pipSupported =
  typeof document !== 'undefined' &&
  'pictureInPictureEnabled' in document &&
  document.pictureInPictureEnabled

export async function togglePip(video: HTMLVideoElement | null | undefined): Promise<void> {
  if (!video || !pipSupported) return
  try {
    if (document.pictureInPictureElement === video) await document.exitPictureInPicture()
    else await video.requestPictureInPicture()
  } catch {
    // Permission/transient failure — the button is best-effort.
  }
}