import { RtTheme } from '../rt-frame.types';

export function computeThemeValue(theme: RtTheme): Exclude<RtTheme, 'auto'> {
  if (theme !== 'auto') return theme;

  if (typeof window === 'undefined' || typeof window.matchMedia === 'undefined')
    return 'light';

  return window.matchMedia('(prefers-color-scheme: dark)').matches
    ? 'dark'
    : 'light';
}