import { useState, useEffect } from 'react';
 import { createClient } from '@/lib/supabase';
  
-export function useAuth() {
-  // TODO: Implement auth
-  return { user: null };
+export function useAuth() {
+  const [user, setUser] = useState(null);
+  const [loading, setLoading] = useState(true);
+  
+  useEffect(() => {
+    const supabase = createClient();
+    supabase.auth.getUser().then(({ data }) => {
+      setUser(data.user);
+      setLoading(false);
+    });
+  }, []);
+  
+  return { user, loading };
 }