Exemple #1
0
        /// <summary>
        /// Creates a new schedule with a random identifier
        /// and makes the client join it using the specified user name.
        /// </summary>
        public async Task CreateAndJoinScheduleAsync(string userName, string catalogId, ErrorReporter errorReporter)
        {
            if (string.IsNullOrWhiteSpace(userName))
            {
                errorReporter.Throw(
                    new ArgumentException("The name of the specified user is invalid", nameof(userName)),
                    UserErrorsViewModel.UserNameInvalidMessage);
            }

            if (State != SessionState.Default)
            {
                errorReporter.Throw(
                    new InvalidOperationException(),
                    UserErrorsViewModel.WrongSessionStateMessage);
            }

            SharedScheduleVM = await _scheduleManager.CreateScheduleAsync(catalogId, errorReporter);

            TailoredScheduleVM = ScheduleViewModel.CreateFrom(SharedScheduleVM.Schedule, errorReporter);
            SearchVM           = new CourseSearchViewModel(SharedScheduleVM.Schedule.CourseCatalogue, SharedScheduleVM.Schedule);
            ExportVM           = new ScheduleExportViewModel(SharedScheduleVM.Schedule);


            // Add user to list of current users
            Name = userName;
            await SharedScheduleVM.AddUserAsync(this, errorReporter);

            CourseListVM = new CourseListViewModel(SharedScheduleVM.Schedule, User);


            State = SessionState.JoinedSchedule;
        }
Exemple #2
0
        /// <summary>
        /// Joins the schedule specified by <see cref="BeginJoinSchedule(string)"/>
        /// by adding the calling client to the schedule's list of users.
        /// </summary>
        /// <remarks>
        /// After this call, synchronization of <see cref="TailoredScheduleVM"/>
        /// and <see cref="SearchVM"/> with the calling client should start.
        /// </remarks>
        /// <param name="userName">
        /// User name (either one of the schedule's known but currently unused user names
        /// (see <see cref="SharedScheduleViewModel.AvailableUserNames"/> or a new name).
        /// </param>
        /// <param name="errorReporter">Object used to throw exceptions</param>
        /// <returns>True if the join completion was successful</returns>
        public async Task CompleteJoinScheduleAsync(string userName, ErrorReporter errorReporter)
        {
            if (State != SessionState.JoiningSchedule)
            {
                errorReporter.Throw(UserErrorsViewModel.GenericErrorMessage + " (Falscher SessionState)");
            }

            if (string.IsNullOrWhiteSpace(userName))
            {
                errorReporter.Throw("Es wurde ein ungültiger Name eingegeben");
            }

            Name = userName;

            // This fails if user name is invalid (empty) or already used by another client
            await SharedScheduleVM.AddUserAsync(this, errorReporter);

            TailoredScheduleVM = ScheduleViewModel.CreateFrom(SharedScheduleVM.Schedule, errorReporter);
            SearchVM           = new CourseSearchViewModel(SharedScheduleVM.Schedule.CourseCatalogue, SharedScheduleVM.Schedule);
            ExportVM           = new ScheduleExportViewModel(SharedScheduleVM.Schedule);
            CourseListVM       = new CourseListViewModel(SharedScheduleVM.Schedule, User);

            State = SessionState.JoinedSchedule;
        }