public QuizVersion FindQuizVersionFromUsersAnswer(string courseId, Guid slideId, string userId)
{
var firstUserAnswer = db.UserQuizzes.FirstOrDefault(x => x.UserId == userId && x.SlideId == slideId && !x.isDropped);
if (firstUserAnswer == null)
{
return(null);
}
/* If we know version which user has answered*/
if (firstUserAnswer.QuizVersion != null)
{
return(firstUserAnswer.QuizVersion);
}
/* If user's version is null, show first created version for this slide ever */
var quizzesRepo = new QuizzesRepo(db);
return(quizzesRepo.GetFirstQuizVersion(courseId, slideId));
}
public async Task <UserQuiz> AddUserQuiz(string courseId, bool isRightAnswer, string itemId, string quizId, Guid slideId, string text, string userId, DateTime time, int quizBlockScore, int quizBlockMaxScore)
{
var quizzesRepo = new QuizzesRepo(db);
var currentQuizVersion = quizzesRepo.GetLastQuizVersion(courseId, slideId);
var userQuiz = new UserQuiz
{
CourseId = courseId,
SlideId = slideId,
QuizVersionId = currentQuizVersion.Id,
IsRightAnswer = isRightAnswer,
ItemId = itemId,
QuizId = quizId,
Text = text,
Timestamp = time,
UserId = userId,
QuizBlockScore = quizBlockScore,
QuizBlockMaxScore = quizBlockMaxScore
};
db.UserQuizzes.Add(userQuiz);
await db.SaveChangesAsync();
return(userQuiz);
}