// lib/view_models/login_view_model.dart
import 'package:flutter/material.dart';

class LoginViewModel with ChangeNotifier {
  final TextEditingController usernameController = TextEditingController();
  final TextEditingController passwordController = TextEditingController();

  final FocusNode usernameFocus = FocusNode();
  final FocusNode passwordFocus = FocusNode();

  bool _obscurePassword = true;

  LoginViewModel() {
    usernameController.addListener(_onTextChanged);
    passwordController.addListener(_onTextChanged);
    usernameFocus.addListener(_onTextChanged);
    passwordFocus.addListener(_onTextChanged);
  }

  bool get obscurePassword => _obscurePassword;
  bool get isLoginEnabled =>
      usernameController.text.isNotEmpty &&
      passwordController.text.isNotEmpty;

  void togglePasswordVisibility() {
    _obscurePassword = !_obscurePassword;
    notifyListeners();
  }

  void _onTextChanged() {
    notifyListeners();
  }

  @override
  void dispose() {
    usernameController.dispose();
    passwordController.dispose();
    usernameFocus.dispose();
    passwordFocus.dispose();
    super.dispose();
  }
}