/**
* Deletes the folder with the given reference.
*
* @param folderReference the reference to the folder to delete
*/
private void deleteFolder(DocumentReference folderReference) {
if (fileSystem.canDelete(folderReference)) {
Folder folder = fileSystem.getFolder(folderReference);
if (folder == null) {
return;
}
List<DocumentReference> childFolderReferences = folder.getChildFolderReferences();
List<DocumentReference> childFileReferences = folder.getChildFileReferences();
notifyPushLevelProgress(childFolderReferences.size() + childFileReferences.size() + 1);
try {
for (DocumentReference childFolderReference : childFolderReferences) {
deleteFolder(childFolderReference);
notifyStepPropress();
}
for (DocumentReference childFileReference : childFileReferences) {
deleteFile(childFileReference, folderReference);
notifyStepPropress();
}
// Delete the folder if it's empty.
if (folder.getChildFolderReferences().isEmpty()
&& folder.getChildFileReferences().isEmpty()) {
fileSystem.delete(folderReference);
}
notifyStepPropress();
} finally {
notifyPopLevelProgress();
}
} else {
this.logger.error("You are not allowed to delete the folder [{}].", folderReference);
}
}
/**
* Deletes a file from one of its parent folders. If the given parent folder reference is {@code
* null} then the file is deleted from all of its parent folders.
*
* @param fileReference the file to delete
* @param parentReference the folder the file should be deleted from, {@code null} if the file
* should be delete from all parents
*/
private void deleteFile(DocumentReference fileReference, DocumentReference parentReference) {
File file = fileSystem.getFile(fileReference);
if (file != null) {
Collection<DocumentReference> parentReferences = file.getParentReferences();
boolean save = parentReferences.remove(parentReference);
if (parentReferences.isEmpty() || parentReference == null) {
if (fileSystem.canDelete(fileReference)) {
fileSystem.delete(fileReference);
} else {
this.logger.error("You are not allowed to delete the file [{}].", fileReference);
}
} else if (save) {
if (fileSystem.canEdit(fileReference)) {
fileSystem.save(file);
} else {
this.logger.error("You are not allowed to edit the file [{}].", fileReference);
}
}
}
}