const ROOM_CODE_CHARS = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';

function generateRoomCode() {
  return Array.from({ length: 4 }, () =>
    ROOM_CODE_CHARS[Math.floor(Math.random() * ROOM_CODE_CHARS.length)]
  ).join('');
}

function getRoomCodeFromURL() {
  return new URLSearchParams(window.location.search).get('room');
}