// 存储的token的KEY
export const TOKEN_KEY = 'token-user';
// 获取token 接口url
export const TOKEN_URL = '';
// 跳转登录地址
export const LOGIN_URL = '';

// 获取 token
export function getToken() {
  const token = localStorage.getItem(TOKEN_KEY);
  return token;
}

// 设置token
export function setToken(value) {
  if (value) {
    localStorage.setItem(TOKEN_KEY, value);
  }
}

// 清除token
export function clearToken() {
  localStorage.removeItem(TOKEN_KEY);
}

// 跳转到登录
export function toLogin() {
  window.location.href = LOGIN_URL;
}

// 空值： [undefined, null, NaN, [], {}], 注意非空：0, false;
export function isEmpty(value) {
  switch (Object.prototype.toString.call(value)) {
    case '[object Undefined]':
      // eslint-disable-next-line no-void
      return value === void 0;
    case '[object Null]':
      return value === null;
    case '[object Number]':
      return isNaN(value);
    case '[object String]':
      return value === '';
    case '[object Boolean]':
      return false;
    case '[object Object]':
      return Object.keys(value).length === 0;
    case '[object Array]':
      return value.length === 0;
    default:
      return false;
  }
}


// 拦截是否登录
const token = getToken();
if (isEmpty(token)) {
  toLogin();
}