public async Task DeleteStorageItem(IDriveScope driveScope, StorageItem item, CancellationToken cancellationToken)
{
var drive = await m_globalScope.Drives.GetAsync(item.DriveId, cancellationToken);
var releasedStats = new SubtreeStatistics();
try
{
await DeleteStorageItemRecursively(driveScope, item, releasedStats);
}
finally
{
drive.NumberOfFiles -= releasedStats.NumberOfFiles;
drive.TotalStorageUsed -= releasedStats.StorageSize;
await m_globalScope.Drives.UpdateAsync(drive, cancellationToken);
}
}
private async Task DeleteStorageItemRecursively(IDriveScope driveScope, StorageItem item, SubtreeStatistics driveStatistics)
{
if (item is Folder folder)
{
await driveScope.StorageItems.LoadFolderChildren(folder, CancellationToken.None);
foreach (var folderChild in folder.Children.ToList())
{
await DeleteStorageItemRecursively(driveScope, folderChild, driveStatistics);
}
}
await DeleteBlob(item);
if (!(item is Folder))
{
driveStatistics.StorageSize += item.Size;
driveStatistics.NumberOfFiles += 1;
}
await driveScope.StorageItems.RemoveAsync(item.Id, CancellationToken.None);
}