public async Task <SaveQuizFeedbackResponseDTO> SaveQuizFeedbackAsync(SaveQuizFb_QuizFeedbackDTO quizFbReceived)
{
float rightAnswerNumber = 0;
var result = new SaveQuizFeedbackResponseDTO();
QuizFeedback quizFb = new QuizFeedback()
{
Character = new Character()
{
Id = quizFbReceived.CharacterId
},
Quiz = await _quizRepo.GetQuizAsync(quizFbReceived.QuizId),
};
if (quizFb.Quiz == null)
{
result._result = SaveQuizFeedbackResponseDTO.RequestResult.QuizNotFound;
return(result);
}
if (quizFb.Quiz.Questions.Count == 0)
{
result._result = SaveQuizFeedbackResponseDTO.RequestResult.QuizWithoutQuestions;
return(result);
}
if (quizFb.Quiz.Questions.Count != quizFbReceived.QuestionAnswers.Count ||
quizFbReceived.QuestionAnswers.GroupBy(qa => qa.QuestionId).Any(q => q.Count() > 1))
{
result._result = SaveQuizFeedbackResponseDTO.RequestResult.InvalidQuizFeedback;
return(result);
}
foreach (var qtAnswerReceived in quizFbReceived.QuestionAnswers)
{
var qtAnswer = new QuestionAnswer()
{
Question = quizFb.Quiz.Questions.Where(q => q.Id == qtAnswerReceived.QuestionId).FirstOrDefault()
};
if (qtAnswer.Question == null)
{
result._result = SaveQuizFeedbackResponseDTO.RequestResult.QuestionNotFound;
return(result);
}
if (qtAnswerReceived.ChosenAnswerIds.Count == 0 ||
(qtAnswerReceived.ChosenAnswerIds.Count > 1 &&
qtAnswer.Question.Answers.Where(a => a.IsCorrect).Count() == 1))
{
result._result = SaveQuizFeedbackResponseDTO.RequestResult.InvalidQuizFeedback;
return(result);
}
foreach (var answerID in qtAnswerReceived.ChosenAnswerIds)
{
var chonsenAnswer = qtAnswer.Question.Answers.Where(a => a.Id == answerID).FirstOrDefault();
if (chonsenAnswer == null)
{
result._result = SaveQuizFeedbackResponseDTO.RequestResult.AnswerNotFound;
return(result);
}
qtAnswer.ChosenAnswers.Add(chonsenAnswer);
}
quizFb.QuestionAnswers.Add(qtAnswer);
var correctAnswerIds = qtAnswer.Question.Answers.Where(a => a.IsCorrect).Select(a => a.Id).ToHashSet();
var AnswerIds = qtAnswerReceived.ChosenAnswerIds.ToHashSet();
int hits = Enumerable.Intersect(AnswerIds, correctAnswerIds).Count();
int misses = AnswerIds.Except(correctAnswerIds).Count();
if (misses <= hits)
{
rightAnswerNumber += (float)(hits - misses) / correctAnswerIds.Count;
}
}
quizFb.PercentageOfCorrectChosenAnswers = (float)Math.Round(rightAnswerNumber * 100 / quizFb.Quiz.Questions.Count, 2);
//Save awnsers
result._result = await _characterService.SaveQuizfeedback(quizFb);
if (result._result != SaveQuizFeedbackResponseDTO.RequestResult.Success)
{
return(result);
}
//fill with correct answers
foreach (var qtAnswer in quizFb.QuestionAnswers)
{
qtAnswer.ChosenAnswers = qtAnswer.Question.Answers.Where(c => c.IsCorrect).ToList();
}
//Return correct answers
result.QuizFeedback = _mapper.Map <QuizFeedbackReadDTO>(quizFb);
return(result);
}
public async Task <SaveQuizFeedbackResponseDTO.RequestResult> SaveQuizfeedback(QuizFeedback quizFeedback)
{
var character = await _characterRepo.GetCharacterAllAsync(quizFeedback.Character.Id);
if (character == null)
{
return(SaveQuizFeedbackResponseDTO.RequestResult.CharacterNotFound);
}
quizFeedback.Character = character;
character.QuizFeedbacks.Add(quizFeedback);
if (character.QuizFeedbacks.Where(c => c.Quiz.Id == quizFeedback.Quiz.Id).Count() == 1)
{
quizFeedback.ExperienceGained = (int)quizFeedback.PercentageOfCorrectChosenAnswers;
quizFeedback.GoldGained = (int)quizFeedback.PercentageOfCorrectChosenAnswers;
var prevLevel = character.Level;
character.TotalXP += quizFeedback.ExperienceGained;
character.Gold += quizFeedback.GoldGained;
quizFeedback.LevelGained = character.Level - prevLevel;
}
try
{
await _characterRepo.SaveChangesAsync();
return(SaveQuizFeedbackResponseDTO.RequestResult.Success);
}
catch (Exception)
{
return(SaveQuizFeedbackResponseDTO.RequestResult.BadRequest);
}
}
