const YT_REGEX = /(?:youtu\.be\/|youtube\.com\/(?:embed\/|v\/|watch\?v=|shorts\/))([a-zA-Z0-9_-]{11})/;

export function getYouTubeId(url: string): string | null {
  const m = url.match(YT_REGEX);
  return m ? m[1] : null;
}

export function getYouTubeThumbnail(url: string): string | null {
  const id = getYouTubeId(url);
  return id ? `https://img.youtube.com/vi/${id}/hqdefault.jpg` : null;
}