import routerUtil from "@/utils/routerutil";//先将js文件在main.js中引入
routerUtil(router);

import sessionUtil from '@/utils/sessionutil'
sessionUtil.setSession("userInfo", '2');

import sessionUtil from "./sessionutil";
const whiteList = ["/",'/logins']; // 路由白名单，不需要校验

export default router => {
 router.beforeEach(async (to, from, next) => {/*在跳转之前执行*/
 const userInfo = sessionUtil.getSession("userInfo");//触发sessionUtil中的getSession方法
 if ( userInfo ) {
 ////
 } else {
 if (whiteList.indexOf(to.path) !== -1) {
  next();
 } else {
  Message({
  type: "warning",
  message: "用户登录过期，请重新登录",
  duration: 1500,
  onClose() {
   next(`/`);
  }
  });
 }
 }
 });
};

const sessionutil = {
 setSession(key,value,maxAge){ //key=userInfo value=2 maxAge='' || 可自行设置
 const maxAgeTime = new Date().getTime() + 1000 * 3600; // 当前时间的+1小时 session 过期时间
 try{
  let data = { value, maxAge: maxAge ? maxAge : maxAgeTime }
  sessionStorage.setItem(typeof key === 'string'?key: JSON.stringify(key),JSON.stringify(data))
 }catch(err){
 }
 },
 getSession(key){
 try{
  const maxAgeTime = new Date().getTime() + 1000 * 3600; // 首先先设置一个 session 过期时间 1H后可自行设置
  let date = new Date().getTime(); //当前时间
  let session = JSON.parse(sessionStorage.getItem(typeof key === 'string'?key: JSON.stringify(key))); 
  if(session && session.maxAge != null && session.maxAge-date > 0 && session.maxAge <= maxAgeTime ){
  this.setSession(key,session.value);
  return session.value;
  } else {
  return null;
  }
 }catch(err){
 }
 },
}
export default sessionutil;