/// <summary>
///
/// </summary>
/// <param name="attempt"></param>
/// <param name="passScore"></param>
/// <param name="timeSpent"></param>
/// <returns></returns>
public async Task <bool> FinishQuizAsync(QuizAttempt attempt, int?passScore, int timeSpent)
{
if (attempt.Status != QuizAttemptStatus.Incomplete)
{
return(false);
}
var questions = (await questionManager.GetQuizQuestions(attempt.UserId, attempt.QuizId)).ToList();
var options = (from qq in Context.QuizQuestions
join q in Context.Questions on qq.QuestionId equals q.Id
join o in Context.Options on q.Id equals o.QuestionId
join a in Context.Answers on new { AttemptId = attempt.Id, QuestionId = q.Id, OptionId = q.Id } equals new { a.AttemptId, a.QuestionId, a.OptionId } into ad
from a in ad.DefaultIfEmpty()
where qq.QuizId == attempt.QuizId
select new QuestionAnswer {
QuestionId = q.Id, IsCorrect = o.IsCorrect, IsMarked = a != null
}
).ToList();
var evaluationResult = EvaluateQuiz(questions, options);
attempt.Score = evaluationResult.Score;
attempt.Correct = evaluationResult.CorrectCount;
attempt.Incorrect = evaluationResult.IncorrectCount;
attempt.Status = EvaluateStatus(evaluationResult.Score, passScore);
attempt.EndDate = DateTime.Now;
attempt.TimeSpent = timeSpent;
Context.QuizAttempts.Update(attempt);
await Context.SaveChangesAsync();
return(true);
}
public async Task <List <Question> > Get(int id)
{
return(await questionManager.GetQuizQuestions(Token.UserId, id));
}
