public async Task <ApiResponse <ExamsAllViewModel> > Handle(AllExamsQuery request, CancellationToken cancellationToken)
        {
            var exams = await dbContext.SchoolSubjects
                        .Select(x => new ExamViewModel(null,
                                                       ExamTypeExtensions.ReverseParseStr(x.Name),
                                                       x.Name,
                                                       0)).ToListAsync();

            ExamsAllViewModel vm = new ExamsAllViewModel(exams);

            return(ApiResponse <ExamsAllViewModel> .Success(vm));
        }
        public async Task <ApiResponse <ExamsAllBySubjectListViewModel> > Handle(ExamsAllBySubjectQuery request, CancellationToken cancellationToken)
        {
            ExamType examType = (ExamType)Enum.Parse(typeof(ExamType), request.ExamTypeUrl);

            IEnumerable <ExamViewModel> exams = await dbContext.Exams.AsNoTracking()
                                                .Where(x => x.ExamType == examType)
                                                .OrderBy(e => e.YearOfCreation)
                                                .Select(x => new ExamViewModel(x.Id,
                                                                               x.ExamType.ToString(),
                                                                               ExamTypeExtensions.Parse(x),
                                                                               x.YearOfCreation))
                                                .ToListAsync();

            ExamsAllBySubjectListViewModel vm = new ExamsAllBySubjectListViewModel(exams);

            return(ApiResponse <ExamsAllBySubjectListViewModel> .Success(vm));
        }