public CreateTaskOutput Execute(CreateTaskInput input)
{
if (input is null)
{
throw new ArgumentNullException(nameof(input));
}
if (input.IsValid())
{
//create new Domain TaskItem from the supplied input data
TaskItem newTask = InputToTaskItem(input);
if (taskManager.Add(newTask))
{
ITaskItemRepository taskItemRepo = taskItemRepositoryFactory.New();
//Create a TaskItemDAL to save to the database
TaskItemDAL taskItemDAL = TaskItemAndInputToDAL(newTask, input);
//add the new TaskItemDAL to the database
if (taskItemRepo.Add(taskItemDAL))
{
//save the changed make to the TaskItemRepository
if (taskItemRepo.Save())
{
//create DTO to return as Output data
TaskItemDTO taskItemDTO = InputToTaskItemDTO(input);
//fill output data and return
return(new CreateTaskOutput {
Success = true, TaskItemDTO = taskItemDTO
});
}
else
{
//failed to save state of repository
//remove taskItem from domain TaskManager
if (!taskManager.Remove(newTask))
{
//TaskItem could not be removed. we're now screwed . . .
//TODO: decide what to do here
}
return(new CreateTaskOutput {
Success = false, Error = "Unable to save the new Task."
});
}
}
else
{
//failed to save task to repository
//remove taskItem from domain TaskManager
if (!taskManager.Remove(newTask))
{
//TaskItem could not be removed. we're now screwed . . .
//TODO: decide what to do here
}
return(new CreateTaskOutput {
Success = false, Error = "Unable to save the new Task."
});
}
}
else
{
//unable to add new TaskItem to domain TaskManager
return(new CreateTaskOutput {
Success = false, Error = "Unable to process the new Task."
});
}
}
else
{
//Input is not valid
return(new CreateTaskOutput {
Success = false, Error = input.GetErrorMessage()
});
}
}
/// <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
});
}