copied the code from the working repo

mtucijobsweb2/fsd/app/provider/AuthContext.tsx

@@ -0,0 +1,56 @@
+'use client';
+import React, { createContext, useContext, useState, useEffect } from 'react';
+
+interface AuthContextType {
+	isAuthenticated: boolean;
+	loading: boolean;
+	login: (token: string, expiresAt: number) => void;
+	logout: () => void;
+}
+
+const AuthContext = createContext<AuthContextType | undefined>(undefined);
+
+export const AuthProvider: React.FC<{ children: React.ReactNode }> = ({
+	children,
+}) => {
+	const [isAuthenticated, setIsAuthenticated] = useState(false);
+	const [loading, setLoading] = useState(true);
+
+	useEffect(() => {
+		const token = localStorage.getItem('token');
+		const expiresAt = localStorage.getItem('expiresAt');
+
+		if (token && expiresAt && new Date().getTime() < Number(expiresAt)) {
+			setIsAuthenticated(true);
+		} else {
+			setIsAuthenticated(false);
+		}
+		setLoading(false); // завершение проверки
+	}, []);
+
+	const login = (token: string, expiresInSeconds: number) => {
+		const expiresAt = new Date().getTime() + expiresInSeconds * 1000;
+		localStorage.setItem('expiresAt', expiresAt.toString());
+		setIsAuthenticated(true);
+	};
+
+	const logout = () => {
+		localStorage.removeItem('token');
+		localStorage.removeItem('expiresAt');
+		setIsAuthenticated(false);
+	};
+
+	return (
+		<AuthContext.Provider value={{ isAuthenticated, loading, login, logout }}>
+			{children}
+		</AuthContext.Provider>
+	);
+};
+
+export const useAuth = (): AuthContextType => {
+	const context = useContext(AuthContext);
+	if (!context) {
+		throw new Error('useAuth must be used within an AuthProvider');
+	}
+	return context;
+};