added server

frontend/src/hooks/useAuth.ts

@@ -0,0 +1,43 @@
+import {useState, useEffect} from 'react';
+import type {User} from '@/types';
+
+export const useAuth = () => {
+  const [user, setUser] = useState<User | null>(null);
+  const [loading, setLoading] = useState(true);
+
+  useEffect(() => {
+    // Check if user is logged in (from localStorage)
+    const storedUser = localStorage.getItem('user');
+    if (storedUser) {
+      setUser(JSON.parse(storedUser));
+    }
+    setLoading(false);
+  }, []);
+
+  const login = (email: string, password: string) => {
+    // Simple authentication (in production, use a real backend)
+    if (email && password) {
+      const newUser: User = {
+        email,
+        isAuthenticated: true
+      };
+      localStorage.setItem('user', JSON.stringify(newUser));
+      setUser(newUser);
+      return true;
+    }
+    return false;
+  };
+
+  const logout = () => {
+    localStorage.removeItem('user');
+    setUser(null);
+  };
+
+  return {
+    user,
+    loading,
+    login,
+    logout,
+    isAuthenticated: !!user?.isAuthenticated
+  };
+};