private async Task RestoreFromDto(IList <FileSystemItemDto> dtos, Guid parentKey)
{
FileSystemItem parentItem;
if (!FileSystemItems.TryGetValue(parentKey, out parentItem))
{
throw new InvalidOperationException($"Parent folder {parentKey} not found.");
}
var parentFolder = parentItem as FileSystemFolder;
if (parentFolder == null)
{
throw new InvalidOperationException($"Key {parentKey} does not refer to a folder.");
}
foreach (var item in dtos.Where(d => d.ParentKey == parentKey))
{
switch (item.Kind)
{
case FileSystemItemKind.Folder:
AddFileSystemItem(new FileSystemFolder(item.Key, item.Name, parentFolder));
await RestoreFromDto(dtos, item.Key);
break;
case FileSystemItemKind.File:
AddFileSystemItem(new FileSystemFile(item.Key, item.Name, parentFolder));
break;
default:
throw new InvalidOperationException("Expected files and folders only");
}
}
}
public async Task <IFileSystemItem> GetItem(Guid key)
{
await EnsureInitialized();
FileSystemItem item;
if (FileSystemItems.TryGetValue(key, out item))
{
return(item);
}
return(null);
}
