Issue 23 dotkernel.com - Add updated date and image to RSS feed

Author: OStefan2001

src/App/src/Factory/FeedGeneratorFactory.php

@@ -26,6 +26,7 @@ public function __invoke(ContainerInterface $container): FeedGenerator
             rtrim($config['application']['url'] ?? '', '/') . '/',
             $config['app']['meta']['title'] ?? '',
             $config['app']['meta']['description'] ?? '',
+            $config['app']['meta']['image'] ?? '',
         );
     }
 }

src/App/src/Service/FeedGenerator.php

@@ -4,6 +4,7 @@
 
 namespace Light\App\Service;
 
+use DateTimeImmutable;
 use DateTimeInterface;
 use DOMDocument;
 use DOMElement;
@@ -17,12 +18,15 @@ class FeedGenerator
 {
     public const CONTENT_TYPE = 'application/rss+xml; charset=UTF-8';
 
+    private const MEDIA_NAMESPACE = 'http://search.yahoo.com/mrss/';
+
     public function __construct(
         private readonly PostRepository $postRepository,
         private readonly string $feedFile,
         private readonly string $baseUrl,
         private readonly string $title,
         private readonly string $description,
+        private readonly string $image,
     ) {
     }
 
@@ -43,6 +47,7 @@ public function write(): int
 
         $rss = $dom->createElement('rss');
         $rss->setAttribute('version', '2.0');
+        $rss->setAttributeNS('http://www.w3.org/2000/xmlns/', 'xmlns:media', self::MEDIA_NAMESPACE);
         $dom->appendChild($rss);
 
         $channel = $dom->createElement('channel');
@@ -51,6 +56,7 @@ public function write(): int
         $this->appendText($dom, $channel, 'title', $this->title);
         $this->appendText($dom, $channel, 'link', $this->baseUrl);
         $this->appendText($dom, $channel, 'description', $this->description);
+        $this->appendText($dom, $channel, 'lastBuildDate', (new DateTimeImmutable())->format(DateTimeInterface::RSS));
 
         foreach ($posts as $post) {
             $link = $this->baseUrl . $post->getCategory()->getSlug() . '/' . $post->getSlug() . '/';
@@ -62,7 +68,15 @@ public function write(): int
             $this->appendText($dom, $item, 'link', $link);
             $this->appendText($dom, $item, 'description', $post->getTldr() ?? $post->getExcerpt());
             $this->appendText($dom, $item, 'pubDate', $post->getPostDate()->format(DateTimeInterface::RSS));
+            $this->appendText($dom, $item, 'updatedAt', $post->getUpdatedFormatted(DateTimeInterface::RSS) ?? $post->getPostDate()->format(DateTimeInterface::RSS));
             $this->appendText($dom, $item, 'guid', $link);
+
+            if ($this->image !== '') {
+                $media = $dom->createElementNS(self::MEDIA_NAMESPACE, 'media:content');
+                $media->setAttribute('url', $this->image);
+                $media->setAttribute('medium', 'image');
+                $item->appendChild($media);
+            }
         }
 
         if ($dom->save($this->feedFile) === false) {