public void CheckAnswer(string key, IEnumerable <string> answerKeys)
{
NumberOfAnswers++;
RaisePropertyChanged(nameof(NumberOfAnswers));
if (!Questions.ContainsKey(key))
{
}
else if (Questions[key].CorrectAnswerKeys.OrderBy(i => i).SequenceEqual(answerKeys.OrderBy(i => i)))
{
Reoccurrences[key] -= 1;
NumberOfCorrectAnswers++;
RaisePropertyChanged(nameof(NumberOfCorrectAnswers));
}
else
{
Reoccurrences[key] += SettingsHelper.ReoccurrencesIfBad;
if (Reoccurrences[key] > SettingsHelper.MaxReoccurrences)
{
Reoccurrences[key] = SettingsHelper.MaxReoccurrences;
}
NumberOfBadAnswers++;
RaisePropertyChanged(nameof(NumberOfBadAnswers));
}
if (Reoccurrences.ContainsKey(key) && Reoccurrences[key] == 0)
{
NumberOfLearnedQuestions++;
RaisePropertyChanged(nameof(NumberOfLearnedQuestions));
NumberOfRemainingQuestions--;
RaisePropertyChanged(nameof(NumberOfRemainingQuestions));
}
if (IsTestCompleted())
{
StopTimer();
}
}
public int ReoccurrencesOfQuestion(string key) => (Reoccurrences.ContainsKey(key))
? Reoccurrences[key]
: 0;