import 'package:supabase_flutter/supabase_flutter.dart';
import '../constants/app_constants.dart';

class SupabaseService {
  static SupabaseClient get _supabase => Supabase.instance.client;

  // Initialize Supabase
  static Future<void> initialize() async {
    try {
      print('DEBUG: Inicializando Supabase...');
      
      await Supabase.initialize(
        url: AppConstants.supabaseUrl,
        anonKey: AppConstants.supabaseAnonKey,
      );

      print('DEBUG: Supabase inicializado com sucesso!');
    } catch (e) {
      print('DEBUG: Erro ao inicializar Supabase: $e');
      rethrow;
    }
  }

  // Get current user
  static User? get currentUser => _supabase.auth.currentUser;

  // Sign up with email and password
  static Future<AuthResponse> signUp({
    required String email,
    required String password,
    required String name,
  }) async {
    try {
      final response = await _supabase.auth.signUp(
        email: email,
        password: password,
        data: {'name': name},
      );

      if (response.user != null) {
        return response;
      } else {
        throw Exception('Falha ao criar usuário.');
      }
    } catch (e) {
      throw Exception('Erro ao criar conta: $e');
    }
  }

  // Sign in with email and password
  static Future<AuthResponse> signIn({
    required String email,
    required String password,
  }) async {
    try {
      return await _supabase.auth.signInWithPassword(
        email: email,
        password: password,
      );
    } catch (e) {
      throw Exception('Erro ao fazer login: $e');
    }
  }

  // Sign out
  static Future<void> signOut() async {
    try {
      await _supabase.auth.signOut();
    } catch (e) {
      throw Exception('Erro ao sair: $e');
    }
  }

  // Reset password
  static Future<void> resetPassword(String email) async {
    try {
      await _supabase.auth.resetPasswordForEmail(email);
    } catch (e) {
      throw Exception('Erro ao redefinir senha: $e');
    }
  }

  // Update user profile
  static Future<void> updateProfile({String? name, String? email}) async {
    try {
      final updates = <String, dynamic>{};
      if (name != null) updates['name'] = name;

      final userAttributes = UserAttributes(
        data: updates.isNotEmpty ? updates : null,
        email: email,
      );

      await _supabase.auth.updateUser(userAttributes);
    } catch (e) {
      throw Exception('Erro ao atualizar perfil: $e');
    }
  }

  // Test connection to Supabase
  static Future<bool> testConnection() async {
    try {
      final session = _supabase.auth.currentSession;
      return true;
    } catch (e) {
      return false;
    }
  }

  // Listen to auth state changes
  static Stream<AuthState> get authStateChanges =>
      _supabase.auth.onAuthStateChange;
}