import Taro from '@tarojs/taro';
import { normalizePhoneInput } from './phone';

const USER_PHONE_KEY = 'user_phone';

function isValidMobile(phone: string) {
  return /^1[3-9]\d{9}$/.test(phone);
}

export function saveUserPhone(phone: string) {
  const normalized = normalizePhoneInput(phone);
  if (!isValidMobile(normalized)) return;
  try {
    Taro.setStorageSync(USER_PHONE_KEY, normalized);
  } catch {
    /* ignore */
  }
}

export function getStoredUserPhone(): string {
  try {
    const value = Taro.getStorageSync(USER_PHONE_KEY);
    return typeof value === 'string' ? value : '';
  } catch {
    return '';
  }
}

/** 新增地址等场景：优先本地缓存，其次资料里的已验证手机号 */
export function resolveDefaultUserPhone(profile?: { phone?: string | null; phoneVerified?: boolean } | null) {
  const stored = getStoredUserPhone();
  if (isValidMobile(stored)) return stored;
  if (!profile?.phoneVerified || !profile.phone) return '';
  const fromProfile = normalizePhoneInput(profile.phone);
  if (!isValidMobile(fromProfile)) return '';
  saveUserPhone(fromProfile);
  return fromProfile;
}