public MaturaResult VerificateMatura(List <QuestionClosedAnswerTestVm> questions, string userId)
        {
            var      user           = this.Context.Users.Entities.First(c => c.Id == userId);
            DateTime date           = DateTime.Today;
            int      correctAnswers = 0;

            foreach (var question in questions)
            {
                bool isCorrect = this.IsCorrectQuestionClsAns(question);
                this.AddQuestionToTakenQuestions(question, isCorrect, user, date);
                if (isCorrect)
                {
                    correctAnswers++;
                }
            }

            double rating = this.CalculateRating(questions.Count, correctAnswers);

            var result = new MaturaResult()
            {
                DateOfTake = date,
                User       = user,
                Rating     = rating,
            };

            this.Context.MaturaResults.Add(result);
            this.Context.SaveChanges();
            return(result);
        }
        public ActionResult Matura(MaturaVm matura)
        {
            var          userId       = this.User.Identity.GetUserId();
            MaturaResult maturaResult = this.service.VerificateMatura(matura.Questions, userId);
            int          id           = maturaResult.Id;

            return(this.Redirect($"~/matura/result/{maturaResult.Id}"));
        }