/// <summary>
/// Executes the logic of the <see cref="ViewTasksUseCase"/>. Retrieves TaskItem data and
/// stores it in the <see cref="ViewTasksUseCase"/>'s Output property.
/// </summary>
public ViewTasksOutput Execute(ViewTasksInput input)
{
ITaskItemRepository taskRepo = taskItemRepositoryFactory.New();
ViewTasksOutput output = new ViewTasksOutput {
Success = true
};
/*
* go through all taskItems in database then add them to the Output property as
* TaskItemDTO's.
*/
foreach (TaskItem domainTask in taskManager.GetAll())
{
//retrieve dataLayer task which carries notification frequency description
Maybe <TaskItemDAL> maybeTask = taskRepo.GetById(domainTask.ID);
if (maybeTask.HasValue)
{
TaskItemDAL taskDAL = maybeTask.Value;
TimeSpan customFrequencyTime = new TimeSpan();
//if the current taskItem has a custom frequency type, then retrieve its Time value
if (taskDAL.customNotificationFrequency.HasValue)
{
CustomNotificationFrequencyDAL frequencyDAL = taskDAL.customNotificationFrequency.Value;
customFrequencyTime = frequencyDAL.time;
}
DTO.TaskItemDTO taskDTO =
new DTO.TaskItemDTO()
{
Id = domainTask.ID,
Title = domainTask.Title,
Description = domainTask.Description,
R = domainTask.Colour.R,
G = domainTask.Colour.G,
B = domainTask.Colour.B,
StartTime = domainTask.StartTime,
//TODO: prefer to do a better conversion that just a cast to an enum
NotificationFrequencyType =
(NotificationFrequencyType)taskDAL.notificationFrequencyType,
CustomNotificationFrequency = customFrequencyTime
};
output.TaskItems.Add(taskDTO);
}
}
return(output);
}
/// <summary>
/// Executes the ViewNotificationsUseCase. Sets the Output property of the UseCase object
/// once complete
/// </summary>
public ViewNotificationsOutput Execute(ViewNotificationsInput input)
{
//no input for use case
ITaskItemRepository taskRepo = taskItemRepositoryFactory.New();
ViewNotificationsOutput output = new ViewNotificationsOutput {
Success = true
};
/*
* Get all notifications that are present in the application, convert them to DTO's, then
* add them to a collection to return
*/
INotificationRepository notificationRepository = notificationRepositoryFactory.New();
foreach (NotificationDAL notification in notificationRepository.GetAll())
{
Maybe <TaskItemDAL> maybeTask = taskRepo.GetById(notification.taskId);
if (maybeTask.HasValue)
{
TaskItemDAL taskDAL = maybeTask.Value;
NotificationDTO dto = new NotificationDTO()
{
TaskId = taskDAL.id,
Title = taskDAL.title,
Time = notification.time,
R = taskDAL.r,
G = taskDAL.g,
B = taskDAL.b
};
output.Notifications.Add(dto);
}
}
return(output);
}
/// <summary>
/// Deletes a Task Item from the application
/// </summary>
/// <param name="input">
/// Holds the input necessary for deleting a TaskItem
/// </param>
/// <returns>
/// The result of deleting the TaskItem
/// </returns>
public DeleteTaskUseCaseOutput Execute(DeleteTaskUseCaseInput input)
{
Guid idToDelete = input.Id;
ITaskItemRepository taskRepo = taskItemRepositoryFactory.New();
//retrieve task item to delete
Maybe <TaskItemDAL> maybeTask = taskRepo.GetById(idToDelete);
if (maybeTask.HasValue)
{
TaskItemDAL taskToDelete = maybeTask.Value;
//delete task item from repository
if (taskRepo.Delete(idToDelete) == false)
{
//unable to delete task
return(new DeleteTaskUseCaseOutput()
{
Error = "Unable to to delete TaskItem", Success = false
});
}
//delete task item from domain
if (taskItemManager.Remove(idToDelete) == false)
{
//failed to remove TaskItem from domain
//TODO : handle this appropriately
return(new DeleteTaskUseCaseOutput()
{
Error = "Unable to to delete TaskItem", Success = false
});
}
INotificationRepository notificationRepo = notificationRepositoryFactory.New();
//iterate through notifications in repository and delete those generated by the deleted task
foreach (NotificationDAL notificationDAL in notificationRepo.GetAll())
{
if (notificationDAL.taskId == idToDelete)
{
if (notificationRepo.Delete(notificationDAL) == false)
{
//unable to delete notification
//TODO : handle this appropriately
}
}
}
//delete task notifications in domain
if (notificationManager.Remove(idToDelete) == false)
{
//failed to remove task notifications from domain
//TODO : handle this appropriately
}
notificationRepo.Save();
taskRepo.Save();
}
else
{
return(new DeleteTaskUseCaseOutput()
{
Error = "Unable to find TaskItem to delete", Success = false
});
}
return(new DeleteTaskUseCaseOutput()
{
Success = true
});
}