export const STORE_ADDRESS_FALLBACK = '地址待完善';

export type StoreAddressParts = {
  province?: string | null;
  cityName?: string | null;
  city?: string | null;
  district?: string | null;
  address?: string | null;
};

function textPart(value: unknown): string {
  return typeof value === 'string' ? value.trim() : '';
}

/**
 * 门店展示地址：省 + 市 + 区 + 详细地址，按字段原样拼接。
 * 省/市/区来自下拉选择，详细地址来自自由输入；即使详细地址已含省市区也不得去重。
 */
export function formatStoreDisplayAddress(
  store: StoreAddressParts,
  fallback = STORE_ADDRESS_FALLBACK,
): string {
  const province = textPart(store.province);
  const city = textPart(store.cityName) || textPart(store.city);
  const district = textPart(store.district);
  const detail = textPart(store.address);
  const text = `${province}${city}${district}${detail}`;
  return text || fallback;
}