Added possibility to export Parts from part tables

src/Controller/PartImportExportController.php

@@ -0,0 +1,63 @@
+<?php
+/*
+ * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
+ *
+ *  Copyright (C) 2019 - 2023 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 Affero General Public License as published
+ *  by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+namespace App\Controller;
+
+use App\Services\ImportExportSystem\EntityExporter;
+use App\Services\Parts\PartsTableActionHandler;
+use Doctrine\ORM\EntityManagerInterface;
+use InvalidArgumentException;
+use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\Routing\Annotation\Route;
+
+class PartImportExportController extends AbstractController
+{
+    private EntityManagerInterface $entityManager;
+    private PartsTableActionHandler $partsTableActionHandler;
+
+    public function __construct(EntityManagerInterface $entityManager, PartsTableActionHandler $partsTableActionHandler)
+    {
+        $this->entityManager = $entityManager;
+        $this->partsTableActionHandler = $partsTableActionHandler;
+    }
+
+    /**
+     * @Route("/parts/export", name="parts_export", methods={"GET"})
+     * @return Response
+     */
+    public function exportParts(Request $request, EntityExporter $entityExporter): Response
+    {
+        $ids = $request->query->get('ids', '');
+        $parts = $this->partsTableActionHandler->idStringToArray($ids);
+
+        if (empty($parts)) {
+            throw new \RuntimeException('No parts found!');
+        }
+
+        //Ensure that we have access to the parts
+        foreach ($parts as $part) {
+            $this->denyAccessUnlessGranted('read', $part);
+        }
+
+        return $entityExporter->exportEntityFromRequest($parts, $request);
+    }
+}