public async Task <QuizNextQuestionDto> NextQuestion(long quizId, long personId, QuizQuestionAnswerDto answersToPreviousQuestion)
{
var quiz = await _context.Quizzes.FirstOrDefaultAsync(q => q.Id == quizId);
if (quiz == null)
{
throw new QuizNotFoundException(quizId);
}
var person = await _context.People.FirstOrDefaultAsync(p => p.Id == personId);
if (person == null)
{
throw new PersonNotFoundException(quizId);
}
var answerIds = new HashSet <long>(answersToPreviousQuestion.AnswerIds);
var answers = _context.QuizAnswers.Where(a => answerIds.Contains(a.Id));
//Record the person's answer(s)
var responseString = _quizManager.QuestionResponse(person, answers);
//Get the next question for the person
var questions = await _context.QuizQuestions.ToListAsync();
var personAnswers = await _context.PersonAnswers.ToListAsync();
var question = _quizManager.NextQuestion(quiz, person, questions, personAnswers);
var questionDto = question.ToDto(_quizManager);
return(new QuizNextQuestionDto {
NextQuestion = questionDto, PreviousQuestionAnswerResponse = responseString
});
}