public async Task <IActionResult> AddExamResult([FromBody] ExamResultListDTO examResultListDTO)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }
            var result = await _service.AddExamResultAsync(examResultListDTO);

            return(Ok(result));
        }
        public async Task <int> AddExamResultAsync(ExamResultListDTO examResultListDTO)
        {
            var results = await _repository.GetCurrentUserExamResultAsync(examResultListDTO.UserId, examResultListDTO.ExamId);

            //if(examResultListDTO.Points > results.points)
            //{

            // }

            var examResultToAdd = _mapper.Map <ExamResult>(examResultListDTO);
            await _repository.AddExamResultAsync(examResultToAdd);

            return(examResultToAdd.ExamId);
        }