/// <summary>
        /// Returns the last open board for a user
        /// </summary>
        /// <param name="projectId">Project Id</param>
        /// <param name="userId">User Id</param>
        /// <returns>Id of the last board the user opened</returns>
        public async Task <string> GetLastOpenBoardForUser(string projectId, string userId)
        {
            UserTaskBoardHistory userTaskBoardHistory = await _UserTaskBoardHistoryCollection.Find(u => u.ProjectId == projectId && u.UserId == userId).FirstOrDefaultAsync();

            if (userTaskBoardHistory == null)
            {
                return(string.Empty);
            }

            return(userTaskBoardHistory.LastOpenBoardId);
        }
        /// <summary>
        /// Returns the last open board for a user
        /// </summary>
        /// <param name="projectId">Project Id</param>
        /// <param name="userId">User Id</param>
        /// <param name="boardId">Board Id</param>
        /// <returns>Id of the last board the user opened</returns>
        public async Task SetLastOpenBoardForUser(string projectId, string userId, string boardId)
        {
            UserTaskBoardHistory userTaskBoardHistory = await _UserTaskBoardHistoryCollection.Find(u => u.ProjectId == projectId && u.UserId == userId).FirstOrDefaultAsync();

            if (userTaskBoardHistory == null)
            {
                userTaskBoardHistory                 = new UserTaskBoardHistory();
                userTaskBoardHistory.Id              = Guid.NewGuid().ToString();
                userTaskBoardHistory.UserId          = userId;
                userTaskBoardHistory.ProjectId       = projectId;
                userTaskBoardHistory.LastOpenBoardId = boardId;

                await _UserTaskBoardHistoryCollection.InsertOneAsync(userTaskBoardHistory);
            }
            else
            {
                userTaskBoardHistory.LastOpenBoardId = boardId;

                await _UserTaskBoardHistoryCollection.ReplaceOneAsync(u => u.Id == userTaskBoardHistory.Id, userTaskBoardHistory);
            }
        }