export const COLOR_SCHEME_PREFERENCES = Object.freeze([
  "system",
  "light",
  "dark",
]);

/** @param {unknown} value */
export function normalizeColorSchemePreference(value) {
  return COLOR_SCHEME_PREFERENCES.includes(/** @type {string} */ (value))
    ? /** @type {"system" | "light" | "dark"} */ (value)
    : "system";
}

/**
 * @param {"system" | "light" | "dark"} preference
 * @param {boolean} systemPrefersDark
 */
export function resolveColorScheme(preference, systemPrefersDark) {
  if (preference === "system") return systemPrefersDark ? "dark" : "light";
  return preference;
}