public PostNewCommentRespond Post(PostNewCommentRequest body)
        {
            var areArgumentsValid = body != null
                && !string.IsNullOrEmpty(body.ClassRoomId)
                && !string.IsNullOrEmpty(body.Description)
                && !string.IsNullOrEmpty(body.LessonId)
                && !string.IsNullOrEmpty(body.UserProfileId);
            if (!areArgumentsValid) return null;

            UserProfile userprofile;
            var canAccessToTheClassRoom = _userprofileRepo.CheckAccessPermissionToSelectedClassRoom(body.UserProfileId, body.ClassRoomId, out userprofile);
            if (!canAccessToTheClassRoom) return null;

            var isTeacher = userprofile.Subscriptions.Any(it => !it.DeletedDate.HasValue && it.ClassRoomId == body.ClassRoomId && it.Role == UserProfile.AccountRole.Teacher);

            var now = _dateTime.GetCurrentTime();
            var canAccessToTheClassLesson = _classCalendarRepo.CheckAccessPermissionToSelectedClassLesson(body.ClassRoomId, body.LessonId, now) || isTeacher;
            if (!canAccessToTheClassLesson) return null;

            var selectedUserActivity = _userActivityRepo.GetUserActivityByUserProfileIdAndClassRoomId(body.UserProfileId, body.ClassRoomId);
            if (selectedUserActivity == null) return null;

            var selectedLesson = selectedUserActivity.LessonActivities.FirstOrDefault(it => it.LessonId == body.LessonId);
            if (selectedLesson == null) return null;

            var id = Guid.NewGuid().ToString();
            var newComment = new Comment
            {
                id = id,
                ClassRoomId = body.ClassRoomId,
                CreatedByUserProfileId = body.UserProfileId,
                Description = body.Description,
                LessonId = body.LessonId,
                CreatedDate = now,
                CreatorDisplayName = userprofile.Name,
                CreatorImageUrl = userprofile.ImageProfileUrl,
                Discussions = Enumerable.Empty<Comment.Discussion>(),
            };
            _commentRepo.UpsertComment(newComment);

            selectedLesson.CreatedCommentAmount++;
            _userActivityRepo.UpsertUserActivity(selectedUserActivity);
            _notificationCtrl.SendNotification();
            return new PostNewCommentRespond { ActualCommentId = id };
        }
        public void WhenUserProfileIdCreateANewCommentWithAMessageIsInTheLessonOfClassRoom(string userprofile, string message, string lessonId, string classRoomId)
        {
            var mockCommentRepo = ScenarioContext.Current.Get<Mock<ICommentRepository>>();
            mockCommentRepo.Setup(it => it.UpsertComment(It.IsAny<Comment>()));

            var mockUserActivityRepo = ScenarioContext.Current.Get<Mock<IUserActivityRepository>>();
            mockUserActivityRepo.Setup(it => it.UpsertUserActivity(It.IsAny<UserActivity>()));

            var body = new PostNewCommentRequest
            {
                ClassRoomId = classRoomId.GetMockStrinValue(),
                Description = message.GetMockStrinValue(),
                LessonId = lessonId.GetMockStrinValue(),
                UserProfileId = userprofile.GetMockStrinValue()
            };

            var commentCtrl = ScenarioContext.Current.Get<CommentController>();
            commentCtrl.Post(body);
        }