// axios.js
`import axios from 'axios';

const api = axios.create({
baseURL: 'http://localhost:5000/api',
});

export const setAuthToken = (token) = >{
if (token) {
api.defaults.headers.common['x-auth-token'] = token;
} else {
delete api.defaults.headers.common['x-auth-token'];
}
};

export
default api;
**//login.js**
import React,
{
useState,
useEffect
}
from 'react';
import api,
{
setAuthToken
}
from '../utils/axios';
import AuthForm from '../components/AuthForm';
import {
Navigate
}
from 'react-router-dom';

const Login = () = >{
const[isAuthenticated, setIsAuthenticated] = useState(false);

useEffect(() = >{
  const token = localStorage.getItem('token');
  if (token) {
    setAuthToken(token);
    setIsAuthenticated(true);
  }
},
[]);

const handleLogin = async(formData) = >{
  try {
    const res = await api.post('/auth/login', formData);
    localStorage.setItem('token', res.data.token);
    setAuthToken(res.data.token);
    setIsAuthenticated(true);
  } catch(err) {
    console.error(err.response.data);
  }
};

if (isAuthenticated) {
  return < Navigate to = "/dashboard" / >;
}

return < AuthForm isLogin = {
  true
}
onSubmit = {
  handleLogin
}
/>;

};

export default Login;`
//middleware auth.js

`module.exports = function (req, res, next) {
const token = req.header('x-auth-token');
console.log('Token:', token);
if (!token) return res.status(401).json({ msg: 'No token, authorization denied' });

try {
  const decoded = jwt.verify(token, process.env.JWT_SECRET);
  req.user = decoded.user;
  next();
} catch (err) {
  res.status(401).json({ msg: 'Token is not valid' });
}

};
**//server.js**
const express = require('express')
const router = express.Router()
const Record = require('../models / Records ')
const authmiddleware = require('.. / middleware / auth ')

router.get(' / records ',authmiddleware,async(req,res) => {
try{
const records = await Record.find({userId: req.user._id})
res.json(records)

}
catch(err){
    res.status(500).json({error: 'Ошибкасервера'})
}

})

router.post(' / records ',authmiddleware,async(req,res)=> {
const {date,exercise,weight,reps } = req.body;
try{
const record = new Record({
userId: req.user._id,
date,
exercise,
weight,
reps
})
await record.save()
res.status(201).json(record)
}
catch(err){
res.status(500).json({err: 'Ошибкасервера'})
}
})
router.delete(' / records: id ',authmiddleware, async(req,res)=> {
try{
const record = await Record.findOneAndDelete({_id:req.params.id,userId: req.user._id})
if(!record){
return res.status(404).json({error: 'Записьненайдена'})
}
res.json({message:'Записьудалена'})

}
catch(err){
  res.status(500).json({err: 'Ошибкасервера'})
}

})
module.exports = router`

tried a lot of things , didnt work'