import 'package:flutter/material.dart';

import 'package:pshared/provider/account.dart';

import 'package:pweb/models/edit_state.dart';


class PasswordFormProvider extends ChangeNotifier {
  final formKey = GlobalKey<FormState>();
  final oldPasswordController = TextEditingController();
  final newPasswordController = TextEditingController();
  final confirmPasswordController = TextEditingController();

  EditState _state = EditState.view;
  String _errorText = '';
  bool _disposed = false;

  bool get isExpanded => _state != EditState.view;
  bool get isSaving => _state == EditState.saving;
  String get errorText => _errorText;
  EditState get state => _state;

  void toggleExpanded() {
    if (_state == EditState.saving) return;
    _setState(_state == EditState.view ? EditState.edit : EditState.view);
    _setError('');
  }

  Future<void> submit({
    required AccountProvider accountProvider,
    required String errorText,
  }) async {
    final currentForm = formKey.currentState;
    if (currentForm == null || !currentForm.validate()) return;

    _setState(EditState.saving);
    _setError('');

    try {
      await accountProvider.changePassword(
        oldPasswordController.text,
        newPasswordController.text,
      );

      oldPasswordController.clear();
      newPasswordController.clear();
      confirmPasswordController.clear();
    } catch (e) {
      _setError(errorText);
      rethrow;
    } finally {
      _setState(EditState.edit);
    }
  }

  void _setState(EditState value) {
    if (_state == value || _disposed) return;
    _state = value;
    notifyListeners();
  }

  void _setError(String value) {
    if (_disposed) return;
    _errorText = value;
    notifyListeners();
  }

  @override
  void dispose() {
    _disposed = true;
    oldPasswordController.dispose();
    newPasswordController.dispose();
    confirmPasswordController.dispose();
    super.dispose();
  }
}