public async Task <IActionResult> CreateUserStory(int projectId,
                                                          [FromBody] CreateUserStoryDto userStory)
        {
            if (userStory == null)
            {
                return(BadRequest());
            }

            // how to add model state error
            if (userStory.Description == userStory.Name)
            {
                ModelState.AddModelError("Details", "The provided description should be different than the Name");
            }

            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

            if (!await _projectManagerRepository.ProjectExistAsync(projectId))
            {
                return(NotFound());
            }

            var userStoryToSave = Mapper.Map <UserStory>(userStory);

            _projectManagerRepository.AddUserStoryForProjectAsync(projectId, userStoryToSave);

            if (!await _projectManagerRepository.SaveAsync())
            {
                return(StatusCode(500, "A problem happened while handling your request."));
            }

            var createdUserStoryToReturn = Mapper.Map <UserStoryDto>(userStoryToSave);

            return(CreatedAtRoute("GetUserStory", new
            {
                projectId = projectId,
                id = createdUserStoryToReturn.Id
            },
                                  createdUserStoryToReturn));
        }