string IUserAnswerService.UpdateAnswers(List <UserAnswer> userAnswers, int surveyId)
{
var questions = userAnswers.Select(q => q.QuestionId).Distinct();
var userId = userAnswers.Select(ua => ua.UserId).FirstOrDefault();
var s = surveyRepository.GetByIdAsNoTracking(surveyId);
var user = userRepository.GetById(userId);
var validation = this.Validation(s.Questions.Where(q => questions.Contains(q.Id)).ToList(), userAnswers, s, false);
if (validation != null)
{
return(validation);
}
foreach (var question in questions)
{
var oldAnswers = repository.GetMany(ua => ua.QuestionId == question && ua.UserId == userId);
//IF OLD ANSWER ISN'T IN NEW LIST OF ANSWERS REMOVE OLD ANSWER
foreach (var oldAnswer in oldAnswers)
{
if (!userAnswers.Contains(oldAnswer))
{
repository.Delete(oldAnswer);
}
}
// ADDING NEW ANSWERS
foreach (var answer in userAnswers.Where(a => a.QuestionId == question))
{
if (!oldAnswers.Contains(answer))
{
repository.Add(answer);
}
}
}
var userNameAndLastName = "Korisnik ";
if (!s.Anonymous)
{
userNameAndLastName += user.FirstName + " " + user.LastName;
}
Notification notification = new Notification(userNameAndLastName + " je ponovo popunio/la anketu", DateTime.Now, Operation.FILLED, NotificationType.PERSONAL);
notification.SurveyId = surveyId;
notification.UserId = userId;
UserNotification un = new UserNotification(surveyRepository.GetByIdAsNoTracking(surveyId).UserId, notification, false);
userNotificationRepository.Add(un);
return(null);
}
int ISurveyService.NumbOfUsers(int questionId)
{
return(userAnswerRepository
.GetMany(ua => ua.QuestionId == questionId).Select(ua => ua.UserId).Distinct().Count());
}
