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<?php |
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/** @noinspection PhpComposerExtensionStubsInspection */ |
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/** @noinspection XmlUnusedNamespaceDeclaration */ |
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declare(strict_types=1); |
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namespace Hyde\Framework\Features\XmlGenerators; |
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use Hyde\Hyde; |
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use SimpleXMLElement; |
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use Hyde\Facades\Site; |
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use Hyde\Facades\Config; |
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use Hyde\Pages\MarkdownPost; |
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use Hyde\Facades\Filesystem; |
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use Hyde\Framework\Features\Blogging\Models\FeaturedImage; |
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use function date; |
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use function assert; |
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use function sprintf; |
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use function implode; |
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/** |
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* @see https://validator.w3.org/feed/docs/rss2.html |
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*/ |
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class RssFeedGenerator extends BaseXmlGenerator |
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{ |
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public function generate(): static |
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{ |
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MarkdownPost::getLatestPosts()->each(function (MarkdownPost $post): void { |
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$this->addItem($post); |
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}); |
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return $this; |
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} |
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protected function constructBaseElement(): void |
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{ |
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$this->xmlElement = new SimpleXMLElement(implode("\n", [ |
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'<?xml version="1.0" encoding="UTF-8"?>', |
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'<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:dc="http://purl.org/dc/elements/1.1/" />', |
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])); |
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$this->xmlElement->addChild('channel'); |
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$this->addBaseChannelItems(); |
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$this->addAtomLinkItem(); |
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} |
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protected function addItem(MarkdownPost $post): void |
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{ |
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$item = $this->getChannel()->addChild('item'); |
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$this->addChild($item, 'title', $post->title); |
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$this->addChild($item, 'description', $post->description); |
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$this->addDynamicItemData($item, $post); |
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} |
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protected function addDynamicItemData(SimpleXMLElement $item, MarkdownPost $post): void |
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{ |
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if ($post->getCanonicalUrl() !== null) { |
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$this->addChild($item, 'link', $post->getCanonicalUrl()); |
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$this->addChild($item, 'guid', $post->getCanonicalUrl()); |
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} |
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if (isset($post->date)) { |
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$this->addChild($item, 'pubDate', $post->date->format(DATE_RSS)); |
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} |
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if (isset($post->author)) { |
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$item->addChild('dc:creator', $post->author->name, 'http://purl.org/dc/elements/1.1/'); |
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} |
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if (isset($post->category)) { |
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$this->addChild($item, 'category', $post->category); |
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} |
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if (isset($post->image)) { |
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$image = $item->addChild('enclosure'); |
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$image->addAttribute('url', Hyde::url($post->image->getSource())); |
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$image->addAttribute('type', $this->getImageType($post->image)); |
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$image->addAttribute('length', $this->getImageLength($post->image)); |
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} |
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} |
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protected function addBaseChannelItems(): void |
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{ |
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$channel = $this->getChannel(); |
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$this->addChild($channel, 'title', Site::name()); |
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$this->addChild($channel, 'link', Site::url()); |
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$this->addChild($channel, 'description', $this->getDescription()); |
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$this->addChild($channel, 'language', Config::getString('hyde.language', 'en')); |
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$this->addChild($channel, 'generator', 'HydePHP '.Hyde::version()); |
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$this->addChild($channel, 'lastBuildDate', date(DATE_RSS)); |
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} |
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protected function addAtomLinkItem(): void |
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{ |
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$atomLink = $this->getChannel()->addChild('atom:link', namespace: 'http://www.w3.org/2005/Atom'); |
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$atomLink->addAttribute('href', $this->escape(Hyde::url($this->getFilename()))); |
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$atomLink->addAttribute('rel', 'self'); |
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$atomLink->addAttribute('type', 'application/rss+xml'); |
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} |
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protected function getImageType(FeaturedImage $image): string |
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{ |
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return Filesystem::findMimeType($image->getSource()); |
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} |
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/** @return numeric-string */ |
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protected function getImageLength(FeaturedImage $image): string |
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{ |
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return (string) $image->getContentLength(); |
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} |
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public static function getFilename(): string |
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{ |
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return Config::getString('hyde.rss.filename', 'feed.xml'); |
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} |
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public static function getDescription(): string |
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{ |
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return Config::getString('hyde.rss.description', sprintf('%s RSS Feed', Site::name())); |
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} |
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protected function getChannel(): SimpleXMLElement |
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{ |
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assert($this->xmlElement->channel instanceof SimpleXMLElement); |
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return $this->xmlElement->channel; |
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} |
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} |
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