//router.js
import React, { lazy } from "react";
import { Navigate } from 'react-router-dom'
 
const Error = lazy(() => import("@/pages/Error/Error.jsx"))
const Index = lazy(() => import("@/pages/Index/Index.jsx"))
const Login = lazy(() => import("@/pages/Login/Login.jsx"))
 
export const routes = [
    {
        path: "/",
        element: <Navigate to="/index"/>
    },
    {
        path: "/login",
        element: <Login />
    },
    {
        path: "/index",
        element: <Index />
    },
    {
        path: "*",
        element: <Error />
    },
]

import React, { useEffect, Suspense } from 'react'
import { useRoutes, useNavigate } from 'react-router-dom'
import { routes } from './router'
 
export default function Index() {
    const element = useRoutes(routes)
 
    return (
        <Authen route={element} children={element.children}>
            <Suspense>
                <div>{element}</div>
            </Suspense>
        </Authen>
    )
 
}
//實現(xiàn)路由攔截
const Authen = (props) => {
    const navigate = useNavigate()
    const { route, children } = props
    const username = sessionStorage.getItem('username')
    console.log(props);
    useEffect(() => {
        if (route.props.match.pathname === "/login" && username) {
            navigate('/index')
        }
    }, [route, navigate,username])
    return children
}