// properties
public static WatcherChangeTypes GetChangeType(this DriveItem newDriveItem, DriveItem oldDriveItem = null)
{
if (oldDriveItem == null)
{
return(WatcherChangeTypes.Created);
}
if (newDriveItem.Deleted != null)
{
return(WatcherChangeTypes.Deleted);
}
else if (oldDriveItem.Id != newDriveItem.Id)
{
throw new ArgumentException();
}
else if (oldDriveItem.GetItemPath() != newDriveItem.GetItemPath())
{
return(WatcherChangeTypes.Renamed);
}
else if (newDriveItem.Type() == DriveItemType.File &&
(oldDriveItem.LastModified() != newDriveItem.LastModified() ||
oldDriveItem.Size != newDriveItem.Size))
{
return(WatcherChangeTypes.Changed);
}
// no change
else
{
return(0);
}
}
public Task SetLastWriteTimeUtcAsync(DriveItem driveItem)
{
var driveItemPath = driveItem.GetAbsolutePath(this.BasePath);
switch (driveItem.Type())
{
case DriveItemType.Folder:
Directory.SetLastWriteTimeUtc(driveItemPath, driveItem.LastModified());
break;
case DriveItemType.File:
File.SetLastWriteTimeUtc(driveItemPath, driveItem.LastModified());
break;
case DriveItemType.RemoteItem:
default:
throw new NotSupportedException();
}
return(Task.CompletedTask);
}
/* low level */
private async Task <DriveItem> TransferDriveItem(IDriveProxy sourceDrive, IDriveProxy targetDrive, DriveItem driveItem)
{
(var itemName1, var itemName2) = this.GetItemNames(driveItem);
var isLocal = sourceDrive == _localDrive;
// item exists on target drive
if (_syncMode == SyncMode.TwoWay && await targetDrive.ExistsAsync(driveItem))
{
// item is unchanged on target drive
// actions: do nothing
if (await targetDrive.GetLastWriteTimeUtcAsync(driveItem) == driveItem.LastModified())
{
_logger.LogDebug($"{itemName1} already exists and is unchanged on target drive '{targetDrive.Name}'. Action(s): do nothing.");
}
// item was modified on target drive
else
{
if (!isLocal)
{
_logger.LogDebug($"{itemName1} already exists and was modified on target drive '{targetDrive.Name}'. Action(s): handle conflict.");
await this.EnsureLocalConflict(driveItem);
}
}
}
// item does not exist on target drive
// actions: transfer item
else
{
_logger.LogInformation($"{itemName1} is not available on target drive '{targetDrive.Name}'. Action(s): transfer {itemName2}.");
return(await this.InternalTransferDriveItem(sourceDrive, targetDrive, driveItem));
}
return(driveItem);
}
public static DriveItem ToConflict(this DriveItem driveItem)
{
driveItem.Name = driveItem.Name.ToConflictFileName(driveItem.LastModified());
return(driveItem);
}
