corrections after the code review

src/App.jsx

@@ -5,6 +5,7 @@ import LoginModal from "./Components/UI/LoginModal";
 import { lightTheme, darkTheme } from "./Style/theme";
 import Logo from './assets/images/logo.svg?react';
 import { checkAuth } from "./Components/UI/auth"; 
+import axios from 'axios';
 
 function App() {
     const [authState, setAuthState] = useState({
@@ -56,7 +57,7 @@ function App() {
 
     const handleLogout = async () => {
         try {
-            await fetch('http://192.168.2.39:3000/api/auth/logout', {
+            await axios.get(`${import.meta.env.VITE_BACK_URL}/api/metrics`, {
                 method: 'POST',
                 credentials: 'include'
             });

src/Components/UI/LoginModal.jsx

@@ -3,6 +3,7 @@ import Modal from "./Modal";
 import "../../Style/LoginModal.css";
 import Logo from '../../assets/images/logo.svg?react';
 import TextField from '@mui/material/TextField';
+import axios from 'axios';
 
 const LoginModal = ({ onLogin, onClose }) => {
   const [username, setUsername] = useState("");
@@ -16,7 +17,8 @@ const LoginModal = ({ onLogin, onClose }) => {
     e.preventDefault();
 
     try {
-      const response = await fetch('http://192.168.2.39:3000/api/auth/login', {
+      const response = await axios.post(
+        `${import.meta.env.VITE_BACK_URL}/api/auth/login`, {
         method: 'POST',
         credentials: 'include',
         headers: {

src/Components/UI/auth.jsx

@@ -1,18 +1,23 @@
+import axios from 'axios';
+
 export const checkAuth = async () => {
   try {
-        const response = await fetch('http://192.168.2.39:3000/api/auth/check', {
-            method: 'GET',
-            credentials: 'include', // Важно для отправки cookies
+    const response = await axios.get(
+      `${import.meta.env.VITE_BACK_URL}/api/auth/check`,
+      {
+        withCredentials: true, // аналог `credentials: 'include'` в fetch
         headers: {
-                'Authorization': `Bearer ${localStorage.getItem('access_token') || ''}`,
+          Authorization: `Bearer ${localStorage.getItem('access_token') || ''}`,
         },
-        });
+      }
+    );
 
-        if (!response.ok) {
+    // У axios нет свойства .ok, проверяем статус 200-299
+    if (response.status >= 200 && response.status < 300) {
+      return response.data; // Данные уже в JSON, не нужно .json()
+    } else {
       throw new Error('Not authenticated');
     }
-
-        return await response.json();
   } catch (err) {
     console.error('Auth check failed:', err);
     return { isAuthenticated: false };