/**
 * 设置带过期时间的数据
 * @param {string} key - 存储的键
 * @param {array} value - 存储的值
 * @param {number} expiryDays - 过期天数
 * @returns {void}
 */
function setItemWithExpiry(key, value, expiryDays) {
  const _val = typeof value === 'object' ? JSON.stringify(value) : value;
  const now = new Date();
  // 计算过期时间的时间戳（毫秒）
  const expiryTime = now.getTime() + expiryDays * 24 * 60 * 60 * 1000;
  const item = {
    value: _val,
    expiry: expiryTime,
  };
  localStorage.setItem(key, JSON.stringify(item));
}

/**
 * 获取数据时判断是否过期
 * @param {string} key - 存储的键
 * @returns {Object|null}
 */
function getItemWithExpiry(key) {
  const itemStr = localStorage.getItem(key);

  if (!itemStr) {
    return null;
  }
  try {
    const item = JSON.parse(itemStr);
    const now = new Date();

    if (now.getTime() > item.expiry) {
      localStorage.removeItem(key);
      return null;
    }

    return JSON.parse(item.value);
  } catch (e) {
    // 解析失败，直接返回null
    return null;
  }
}

const TokenKey = 'GCLS_Token';

export function getSessionID() {
  const token = getItemWithExpiry(TokenKey);
  return token ? (token.session_id ?? '') : '';
}

export function getToken() {
  const token = getItemWithExpiry(TokenKey);

  return token;
}

export function setToken(token) {
  setItemWithExpiry(TokenKey, token, 10);
}

export function removeToken() {
  localStorage.removeItem(TokenKey);
}

const ConfigKey = 'GCLS_Config';

export function getConfig() {
  const config = getItemWithExpiry(ConfigKey);
  return config;
}

export function setConfig(value) {
  setItemWithExpiry(ConfigKey, value, 10);
}

export function removeConfig() {
  localStorage.removeItem(ConfigKey);
}

/**
 * 设置本地存储
 * @param {string} key - 存储的键
 * @param {any} value - 存储的值
 */
export function setLocalStore(key, value) {
  try {
    if (value === undefined) {
      localStorage.removeItem(key);
      return;
    }
    const toStore = typeof value === 'string' ? value : JSON.stringify(value);
    localStorage.setItem(key, toStore);
  } catch (e) {
    // 序列化或存储失败时退回到字符串存储，若仍失败则忽略
    try {
      localStorage.setItem(key, String(value));
    } catch (_) {
      /* noop */
    }
  }
}

/**
 * 获取本地存储
 * @param {string} key - 存储的键
 * @returns {any} 返回存储的值
 */
export function getLocalStore(key) {
  const value = localStorage.getItem(key);
  try {
    if (value) {
      return JSON.parse(value);
    }
    return null;
  } catch (e) {
    return value;
  }
}

/**
 * 移除本地存储
 * @param {string} key - 存储的键
 */
export function removeLocalStore(key) {
  localStorage.removeItem(key);
}