/**
* @param SimpleXMLElement $parent
* @param Article $article
*
* @throws \imnotjames\Syndicator\Exceptions\SerializationException
*/
private function serializeArticle(SimpleXMLElement $parent, Article $article)
{
$itemXML = $parent->addChild('item');
$title = $article->getTitle();
$link = $article->getURI();
$description = $article->getDescription();
if (is_null($title) && is_null($description)) {
throw new SerializationException('Articles must have at least a title or description');
}
if (!is_null($title)) {
$itemXML->addChild('title', $title);
}
if (!is_null($link)) {
$itemXML->addChild('link', $link);
}
if (!is_null($description)) {
$itemXML->addChild('description', $description);
}
$categories = $article->getCategories();
foreach ($categories as $category) {
$categoryXML = $itemXML->addChild('category', $category->getName());
if (!is_null($category->getTaxonomy())) {
$categoryXML['domain'] = $category->getTaxonomy();
}
}
$publishedDate = $article->getDatePublished();
if (!is_null($publishedDate)) {
$itemXML->addChild('pubDate', $publishedDate->format(self::DATE_FORMAT));
}
$guid = $article->getID();
if (!empty($guid)) {
$itemXML->addChild('guid', $guid);
} else {
$permalinkXML = $itemXML->addChild('guid', hash('sha256', $article->getTitle() . $article->getURI() . $article->getDescription()));
$permalinkXML->addAttribute('isPermaLink', 'false');
}
$attachments = $article->getAttachments();
$enclosures = array_filter($attachments, function ($a) {
return $a instanceof Link && $a->getLinkType() === Link::TYPE_ENCLOSURE;
});
$comments = array_filter($attachments, function ($a) {
return $a instanceof Link && $a->getLinkType() === Link::TYPE_COMMENT;
});
foreach ($enclosures as $enclosure) {
$enclosureXML = $itemXML->addChild('enclosure');
$enclosureXML->addAttribute('url', $enclosure->getURI());
$enclosureXML->addAttribute('length', $enclosure->getLength());
$enclosureXML->addAttribute('type', $enclosure->getMediaType());
}
$author = $article->getAuthor();
if (!is_null($author)) {
$email = $author->getEmail();
$name = $author->getName();
if (!empty($name)) {
$itemXML->addChild('author', sprintf('%s (%s)', $email, $name));
} else {
$itemXML->addChild('author', $email);
}
}
foreach ($comments as $comment) {
$itemXML->addChild('comments', $comment->getURI());
}
$source = $article->getSource();
if (!is_null($source)) {
$sourceXML = $itemXML->addChild('source', $source->getTitle());
$sourceXML->addAttribute('url', $source->getURI());
}
}
/**
* @param SimpleXMLElement $item
*
* @return Article
* @throws \imnotjames\Syndicator\Exceptions\InvalidURIException
*/
private function parseArticle(SimpleXMLElement $item)
{
$article = new Article();
$article->setTitle((string) $item->title);
$article->setURI((string) $item->link);
$article->setDescription((string) $item->description);
if (isset($item->author)) {
$article->setAuthor($this->parseContact($item->author));
}
if (isset($item->pubDate)) {
$article->setDatePublished($this->parseDateTime($item->pubDate));
}
if (isset($item->category)) {
foreach ($item->category as $category) {
$article->addCategory($this->parseCategory($category));
}
}
if (isset($item->enclosure)) {
foreach ($item->enclosure as $enclosure) {
$article->addAttachment($this->parseEnclosure($enclosure));
}
}
if (isset($item->guid)) {
$article->setID((string) $item->guid);
}
if (isset($item->source)) {
$article->setSource($this->parseSource($item->source));
}
return $article;
}