Added an command which deletes all abandoned files created by attachments that dont exist anymore.

src/Services/AttachmentReverseSearch.php

@@ -0,0 +1,69 @@
+<?php
+/**
+ *
+ * part-db version 0.1
+ * Copyright (C) 2005 Christoph Lechner
+ * http://www.cl-projects.de/
+ *
+ * part-db version 0.2+
+ * Copyright (C) 2009 K. Jacobs and others (see authors.php)
+ * http://code.google.com/p/part-db/
+ *
+ * Part-DB Version 0.4+
+ * Copyright (C) 2016 - 2019 Jan Böhmer
+ * https://github.com/jbtronics
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+ *
+ */
+
+namespace App\Services;
+
+use App\Entity\Attachments\Attachment;
+use Doctrine\ORM\EntityManagerInterface;
+use Symfony\Component\HttpFoundation\File\File;
+
+/**
+ * This service provides functions to find attachments via an reverse search based on a file.
+ * @package App\Services
+ */
+class AttachmentReverseSearch
+{
+    protected $em;
+    protected $attachment_helper;
+
+    public function __construct(EntityManagerInterface $em, AttachmentHelper $attachmentHelper)
+    {
+        $this->em = $em;
+        $this->attachment_helper = $attachmentHelper;
+    }
+
+    /**
+     * Find all attachments that use the given file
+     * @param File $file
+     * @return Attachment[]
+     */
+    public function findAttachmentsByFile(\SplFileInfo $file) : array
+    {
+        //Path with %MEDIA%
+        $relative_path_new = $this->attachment_helper->realPathToPlaceholder($file->getPathname());
+        //Path with %BASE%
+        $relative_path_old = $this->attachment_helper->realPathToPlaceholder($file->getPathname(), true);
+
+        $repo = $this->em->getRepository(Attachment::class);
+        return $repo->findBy(['path' => [$relative_path_new, $relative_path_old]]);
+    }
+
+}