export type AppFontSize = 'standard' | 'large' | 'extra-large';

export const appFontSizeKey = 'aihr_mobile_font_size';

export const appFontSizeOptions: Array<{ value: AppFontSize; label: string }> = [
  { value: 'standard', label: '标准' },
  { value: 'large', label: '大字' },
  { value: 'extra-large', label: '超大字' }
];

const normalizeAppFontSize = (value: unknown): AppFontSize => {
  if (value === 'large' || value === 'extra-large') return value;
  return 'standard';
};

export const getAppFontSize = (): AppFontSize =>
  normalizeAppFontSize(uni.getStorageSync(appFontSizeKey));

export const applyAppFontSize = (value: AppFontSize) => {
  if (typeof document === 'undefined') return;
  document.documentElement.setAttribute('data-aihr-font-size', value);
};

export const setAppFontSize = (value: AppFontSize) => {
  const normalized = normalizeAppFontSize(value);
  uni.setStorageSync(appFontSizeKey, normalized);
  applyAppFontSize(normalized);
  return normalized;
};

export const applyStoredFontSize = () => applyAppFontSize(getAppFontSize());