Added url to media file and thumbnail to attachments

src/Serializer/AttachmentNormalizer.php

@@ -0,0 +1,70 @@
+<?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/>.
+ */
+
+declare(strict_types=1);
+
+
+namespace App\Serializer;
+
+use App\Entity\Attachments\Attachment;
+use App\Services\Attachments\AttachmentURLGenerator;
+use Symfony\Component\DependencyInjection\Attribute\Autowire;
+use Symfony\Component\Serializer\Normalizer\NormalizerInterface;
+use Symfony\Component\Serializer\Normalizer\ObjectNormalizer;
+
+class AttachmentNormalizer implements NormalizerInterface
+{
+    public function __construct(
+        #[Autowire(service: ObjectNormalizer::class)]
+        private readonly NormalizerInterface $normalizer,
+        private readonly AttachmentURLGenerator $attachmentURLGenerator,
+    )
+    {
+
+    }
+
+    public function normalize(mixed $object, string $format = null, array $context = [])
+    {
+        if (!$object instanceof Attachment) {
+            throw new \InvalidArgumentException('This normalizer only supports Attachment objects!');
+        }
+
+        $data = $this->normalizer->normalize($object, $format, $context);
+
+        $data['media_url'] = $this->attachmentURLGenerator->getViewURL($object);
+        //Add thumbnail url if the attachment is a picture
+        $data['thumbnail_url'] = $object->isPicture() ? $this->attachmentURLGenerator->getThumbnailURL($object) : null;
+
+        return $data;
+    }
+
+    public function supportsNormalization(mixed $data, string $format = null, array $context = []): bool
+    {
+        return $data instanceof Attachment;
+    }
+
+    public function getSupportedTypes(?string $format): array
+    {
+        return [
+            //We depend on the context to determine if we should normalize or not
+            Attachment::class => true,
+        ];
+    }
+}