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<?php |
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/** @noinspection PhpComposerExtensionStubsInspection */ |
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namespace Hyde\Framework\Services; |
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use Hyde\Framework\Hyde; |
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use Hyde\Framework\Models\Pages\MarkdownPost; |
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use SimpleXMLElement; |
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/** |
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* @see \Hyde\Framework\Testing\Feature\Services\RssFeedServiceTest |
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* @see https://validator.w3.org/feed/docs/rss2.html |
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* @phpstan-consistent-constructor |
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*/ |
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class RssFeedService |
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{ |
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public SimpleXMLElement $feed; |
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public function __construct() |
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{ |
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if (! extension_loaded('simplexml') || config('testing.mock_disabled_extensions', false) === true) { |
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throw new \Exception('The ext-simplexml extension is not installed, but is required to generate RSS feeds.'); |
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} |
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$this->feed = new SimpleXMLElement('<?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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$this->feed->addChild('channel'); |
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$this->addInitialChannelItems(); |
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} |
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/** |
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* @throws \Exception |
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*/ |
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public function generate(): static |
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{ |
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/** @var MarkdownPost $post */ |
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foreach (MarkdownPost::getLatestPosts() as $post) { |
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$this->addItem($post); |
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} |
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return $this; |
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} |
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public function getXML(): string|false |
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{ |
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return $this->feed->asXML(); |
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} |
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protected function addItem(MarkdownPost $post): void |
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{ |
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$item = $this->feed->channel->addChild('item'); |
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$item->addChild('title', $post->findTitleForDocument()); |
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$item->addChild('link', $post->getCanonicalLink()); |
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$item->addChild('guid', $post->getCanonicalLink()); |
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$item->addChild('description', $post->getPostDescription()); |
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$this->addAdditionalItemData($item, $post); |
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} |
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protected function addAdditionalItemData(SimpleXMLElement $item, MarkdownPost $post): void |
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{ |
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if (isset($post->date)) { |
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$item->addChild('pubDate', $post->date->dateTimeObject->format(DATE_RSS)); |
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} |
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if (isset($post->author)) { |
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$item->addChild('dc:creator', $post->author->getName(), 'http://purl.org/dc/elements/1.1/'); |
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} |
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if (isset($post->category)) { |
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$item->addChild('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', isset($post->image->path) ? Hyde::url('media/'.basename($post->image->path)) : $post->image->getSource()); |
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$image->addAttribute('type', str_ends_with($post->image->getSource(), '.png') ? 'image/png' : 'image/jpeg'); |
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$image->addAttribute('length', $post->image->getContentLength()); |
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} |
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} |
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protected function addInitialChannelItems(): void |
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{ |
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$this->feed->channel->addChild('title', static::getTitle()); |
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$this->feed->channel->addChild('link', static::getLink()); |
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$this->feed->channel->addChild('description', static::getDescription()); |
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$atomLink = $this->feed->channel->addChild('atom:link', namespace: 'http://www.w3.org/2005/Atom'); |
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$atomLink->addAttribute('href', static::getLink().'/'.static::getDefaultOutputFilename()); |
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$atomLink->addAttribute('rel', 'self'); |
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$atomLink->addAttribute('type', 'application/rss+xml'); |
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$this->addAdditionalChannelData(); |
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} |
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protected function addAdditionalChannelData(): void |
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{ |
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$this->feed->channel->addChild('language', config('site.language', 'en')); |
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$this->feed->channel->addChild('generator', 'HydePHP '.Hyde::version()); |
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$this->feed->channel->addChild('lastBuildDate', date(DATE_RSS)); |
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} |
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protected static function xmlEscape(string $string): string |
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{ |
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return htmlspecialchars($string, ENT_XML1 | ENT_COMPAT, 'UTF-8'); |
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} |
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public static function getDescription(): string |
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{ |
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return static::xmlEscape( |
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config( |
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'hyde.rss_description', |
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static::getTitle().' RSS Feed' |
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) |
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); |
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} |
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public static function getTitle(): string |
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{ |
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return static::xmlEscape( |
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config('site.name', 'HydePHP') |
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); |
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} |
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public static function getLink(): string |
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{ |
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return static::xmlEscape( |
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rtrim( |
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config('site.url') ?? 'http://localhost', |
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'/' |
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) |
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); |
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} |
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public static function getDefaultOutputFilename(): string |
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{ |
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return config('hyde.rss_filename', 'feed.xml'); |
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} |
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public static function generateFeed(): string |
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{ |
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return (new static)->generate()->getXML(); |
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} |
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} |
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hydephp /
develop
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