public List <Question> GetAll()
{
var questions = _repo.GetAll().ToList();
if (questions == null)
{
throw new Exception("We've learned everything we need to know. There are no questions.");
}
return(questions);
}
public async Task <Question> UpdateQuestionAsync(long questionId, string value, string userId)
{
var question = await _questionsRepository
.GetAll()
.Where(a => a.Id == questionId)
.Where(a => !a.IsDeleted)
.SingleOrDefaultAsync();
if (question == null)
{
return(null);
}
var access = await _quizzesRepository.HaveWriteAccessToQuiz(userId, question.QuizId);
if (!access)
{
return(null);
}
var questionVersion = new QuestionVersion {
CreationTime = CurrentTime,
Value = value
};
question.Versions.Add(questionVersion);
_questionsRepository.Update(question);
var result = await Context.SaveChangesAsync() > 0;
if (!result)
{
return(null);
}
question.FlatVersionProps();
return(question);
}
public List <Question> GetQuestions()
{
return(_repo.GetAll().ToList());
}
internal IEnumerable <Question> GetAll()
{
return(_repo.GetAll());
}
public async Task <object> NextQuestionAsync(long learningQuizId, string userId)
{
var learningQuiz = await _learningQuizzesRepository.GetById(learningQuizId);
if (learningQuiz?.QuizId == null || learningQuiz.UserId != userId)
{
return(null);
}
var isPublic = await _quizzesRepository.IsPublicAsync(learningQuiz.QuizId.Value);
if (!isPublic)
{
var access = await _quizzesRepository.HaveReadAccessToQuizAsync(userId, learningQuiz.QuizId.Value);
if (!access)
{
return(null);
}
}
var maxVersionTime = learningQuiz.CreationTime;
var reoccurrences = _learningQuizQuestionsRepository.GetAllByLearningQuizId(learningQuiz.Id);
if (reoccurrences == null)
{
return(null);
}
var remainingReoccurrences = reoccurrences.Where(q => q.Reoccurrences > 0);
if (!remainingReoccurrences.Any())
{
return(new { IsFinished = true });
}
var randomQuestionReoccurrences = remainingReoccurrences.RandomElement();
var randomQuestion = await _questionsRepository
.GetAll()
.Where(q => q.Id == randomQuestionReoccurrences.QuestionId)
.Where(q => q.CreationTime <= maxVersionTime)
.Include(q => q.Versions)
.SingleOrDefaultAsync();
randomQuestion.FlatVersionProps(maxVersionTime);
var answers = await _answersRepository
.GetAllByQuestionId(randomQuestion.Id, maxVersionTime, true) //TODO MIN VERSION TIME
.Shuffle()
.Include(a => a.Versions)
.Select(a => new {
a.Id,
a.Versions
.Where(b => b.CreationTime <= maxVersionTime)
.OrderByDescending(b => b.CreationTime)
.FirstOrDefault()
.Value
})
.ToListAsync();
return(new {
IsFinished = false,
randomQuestionReoccurrences.Reoccurrences,
Question = randomQuestion,
Answers = answers
});
}
