update

lib/auth/auth_service.dart

@@ -0,0 +1,23 @@
+import 'package:supabase_flutter/supabase_flutter.dart';
+
+class AuthService {
+  final SupabaseClient _supabase = Supabase.instance.client;
+
+  Future<AuthResponse> signIn(String email, String password) async {
+    return await _supabase.auth.signInWithPassword(email: email, password: password);
+  }
+
+  Future<AuthResponse> signUp(String email, String password) async {
+    return await _supabase.auth.signUp(email: email, password: password);
+  }
+
+  Future<void> signOut() async {
+    await _supabase.auth.signOut();
+  }
+
+  String? getCurrentUser() {
+    final session = _supabase.auth.currentSession;
+    final user = session?.user;
+    return user?.email;
+  }
+}