private async Task DeleteOrphanedRemoteStates()
{
// files
foreach (var remoteState in _context.RemoteStates.Where(current => !current.IsLocal && current.Type == DriveItemType.File))
{
_logger.LogInformation($"Delete orphaned file '{remoteState.GetItemPath()}' from drive '{_remoteDrive.Name}'.");
await _remoteDrive.DeleteAsync(remoteState.ToDriveItem());
}
// folders
foreach (var remoteState in _context.RemoteStates.Where(current => !current.IsLocal && current.Type == DriveItemType.Folder))
{
_logger.LogInformation($"Delete orphaned folder '{remoteState.GetItemPath()}' from drive '{_remoteDrive.Name}'.");
await _remoteDrive.DeleteAsync(remoteState.ToDriveItem());
}
}
private async Task <(DriveItem UpdateDriveItem, WatcherChangeTypes ChangeType)> SyncDriveItem(
IDriveProxy sourceDrive,
IDriveProxy targetDrive,
DriveItem oldDriveItem,
DriveItem newDriveItem)
{
DriveItem updatedDriveItem;
(var itemName1, var itemName2) = this.GetItemNames(newDriveItem);
var changeType = newDriveItem.GetChangeType(oldDriveItem);
switch (changeType)
{
case WatcherChangeTypes.Changed:
case WatcherChangeTypes.Created:
// Item was created or modified on source drive
// actions: create or modify on target drive
_logger.LogInformation($"{itemName1} was created or modified on drive '{sourceDrive.Name}'. Action(s): Create or modify {itemName2} on drive '{targetDrive.Name}'.");
updatedDriveItem = await this.TransferDriveItem(sourceDrive, targetDrive, newDriveItem);
break;
case WatcherChangeTypes.Deleted:
// item was deleted on source drive
// actions: delete item on target drive
_logger.LogInformation($"{itemName1} was deleted on drive '{sourceDrive.Name}'. Action(s): Delete {itemName2} on drive '{targetDrive.Name}'.");
if (await targetDrive.ExistsAsync(newDriveItem))
{
updatedDriveItem = await targetDrive.DeleteAsync(newDriveItem);
}
else
{
_logger.LogWarning($"Cannot delete {itemName2} because it does not exist on drive '{targetDrive.Name}'.");
throw new InvalidOperationException($"Cannot delete {itemName2} because it does not exist on drive '{targetDrive.Name}'.");
}
break;
case WatcherChangeTypes.Renamed:
// item was renamed / moved on source drive
// actions: rename / move item on target drive
_logger.LogInformation($"{itemName1} was renamed / moved on drive '{sourceDrive.Name}'. Action(s): Rename / move {itemName2} on drive '{targetDrive.Name}'.");
if (await targetDrive.ExistsAsync(newDriveItem))
{
_logger.LogWarning($"Cannot move {itemName2} because the target {itemName2} already exists on drive '{targetDrive.Name}'.");
throw new InvalidOperationException($"Cannot move {itemName2} because the target {itemName2} already exists on drive '{targetDrive.Name}'.");
}
else
{
updatedDriveItem = await targetDrive.MoveAsync(oldDriveItem, newDriveItem);
}
break;
default:
updatedDriveItem = newDriveItem;
break;
}
return(updatedDriveItem, changeType);
}