build_a_word_presenter.dart

import 'package:speakee_flutter/base/speakee_view.dart';
import 'package:speakee_flutter/lessons/sentence_building/widgets/word_card_model.dart';

import 'build_a_word_contract.dart';

class BuildAWordPresenterImpl extends BuildAWordPresenter {
  BuildAWordView _view;
  List<String> choices;
  List<String> userChoices;

  BuildAWordPresenterImpl(SpeakeeView view, List<String> choices) {
    this._view = view;
  }

  @override
  void checkWordCard(int index, WordCardModel wordCard) {
    if (index == wordCard.wordIndex) {
      _view.addWordCard(wordCard.positionInSentence);
    } else {
      _view.showShakeAnimation();
    }
  }

  void onChiceSelected(
    Choice choice,
  ) {
    var correctIndex = choices.indexOf(choice);
    var currentIndex = userChoices.length;

    if (correctIndex == currentIndex) {
      userChoices.add(choice.choice);
      _view.showInput(userChoices);
      _view.showChoices(
          active: choices.map((choice) {
        Choice(choice: choice, isActive: !userChoices.contains(choice));
      }).toList());
    } else {
      _view.showShakeAnimation();
    }
  }
}