/// <summary>
/// Adds the child.
/// </summary>
/// <param name="item">The item.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
/// <exception cref="System.InvalidOperationException">Unable to add + item.Name</exception>
public async Task AddChild(BaseItem item, CancellationToken cancellationToken)
{
item.SetParent(this);
if (item.Id == Guid.Empty)
{
item.Id = LibraryManager.GetNewItemId(item.Path, item.GetType());
}
if (ActualChildren.Any(i => i.Id == item.Id))
{
throw new ArgumentException(string.Format("A child with the Id {0} already exists.", item.Id));
}
if (item.DateCreated == DateTime.MinValue)
{
item.DateCreated = DateTime.UtcNow;
}
if (item.DateModified == DateTime.MinValue)
{
item.DateModified = DateTime.UtcNow;
}
AddChildInternal(item);
await LibraryManager.CreateItem(item, cancellationToken).ConfigureAwait(false);
await ItemRepository.SaveChildren(Id, ActualChildren.Select(i => i.Id).ToList(), cancellationToken).ConfigureAwait(false);
}
private BaseItem RetrieveChild(BaseItem child)
{
if (child == null || child.Id == Guid.Empty)
{
Logger.Error("Item found with empty Id: " + (child.Path ?? child.Name));
return(null);
}
var item = LibraryManager.GetMemoryItemById(child.Id);
if (item != null)
{
if (item is IByReferenceItem)
{
return(LibraryManager.GetOrAddByReferenceItem(item));
}
item.SetParent(this);
}
else
{
child.SetParent(this);
LibraryManager.RegisterItem(child);
item = child;
}
return(item);
}
/// <summary>
/// Removes the child.
/// </summary>
/// <param name="item">The item.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
/// <exception cref="System.InvalidOperationException">Unable to remove + item.Name</exception>
public Task RemoveChild(BaseItem item, CancellationToken cancellationToken)
{
RemoveChildrenInternal(new[] { item });
item.SetParent(null);
return(ItemRepository.SaveChildren(Id, ActualChildren.Select(i => i.Id).ToList(), cancellationToken));
}
/// <summary>
/// Removes the child.
/// </summary>
/// <param name="item">The item.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
/// <exception cref="System.InvalidOperationException">Unable to remove + item.Name</exception>
public Task RemoveChild(BaseItem item, CancellationToken cancellationToken)
{
RemoveChildrenInternal(new[] { item });
item.SetParent(null);
if (!EnableNewFolderQuerying())
{
return(ItemRepository.SaveChildren(Id, ActualChildren.Select(i => i.Id).ToList(), cancellationToken));
}
return(Task.FromResult(true));
}
/// <summary>
/// Removes the child.
/// </summary>
/// <param name="item">The item.</param>
public void RemoveChild(BaseItem item)
{
item.SetParent(null);
}
