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<?
namespace Bitrix\Main\UrlPreview\Parser;
use Bitrix\Main\UrlPreview\HtmlDocument;
use Bitrix\Main\UrlPreview\Parser;
class OpenGraph extends Parser
{
/**
* Parses HTML documents OpenGraph metadata
*
* @param HtmlDocument $document HTML document to be parsed.
* @return void
*/
public function handle(HtmlDocument $document)
{
if($document->getTitle() == '')
{
$ogTitle = $document->getMetaContent('og:title');
if($ogTitle <> '')
{
$document->setTitle($ogTitle);
}
}
if($document->getDescription() == '')
{
$ogDescription = $document->getMetaContent('og:description');
if($ogDescription <> '')
{
$document->setDescription($ogDescription);
}
}
if($document->getImage() == '')
{
$ogImage = $document->getMetaContent('og:image:secure_url') ?: $document->getMetaContent('og:image');
if($ogImage <> '')
{
$document->setImage($ogImage);
}
}
$this->parseVideoData($document);
if(!$document->getExtraField('SITE_NAME'))
{
$ogSiteName = $document->getMetaContent('og:site_name');
if($ogSiteName <> '')
{
$document->setExtraField('SITE_NAME', $ogSiteName);
}
}
/* Not really opengraph property :), but it's placed in opengraph parser to prevent executing full parser chain
just to get favicon */
if(!$document->getExtraField('FAVICON'))
{
if($favicon = $document->getLinkHref('icon'))
{
$document->setExtraField('FAVICON', $favicon);
}
}
}
protected function parseVideoData(HtmlDocument $document)
{
if(!$document->getExtraField('VIDEO'))
{
$ogVideo = $document->getMetaContent('og:video')
?? $document->getMetaContent('og:video:secure_url')
?? $document->getMetaContent('og:video:url')
?? '';
if($ogVideo <> '')
{
$document->setExtraField('VIDEO', $ogVideo);
}
}
if(!$document->getExtraField('VIDEO_TYPE'))
{
$ogVideoType = $document->getMetaContent('og:video:type') ?? '';
if($ogVideoType <> '')
{
$document->setExtraField('VIDEO_TYPE', $ogVideoType);
}
}
if(!$document->getExtraField('VIDEO_WIDTH'))
{
$ogVideoWidth = $document->getMetaContent('og:video:width') ?? '';
if($ogVideoWidth <> '')
{
$document->setExtraField('VIDEO_WIDTH', $ogVideoWidth);
}
}
if(!$document->getExtraField('VIDEO_HEIGHT'))
{
$ogVideoHeight = $document->getMetaContent('og:video:height') ?? '';
if($ogVideoHeight <> '')
{
$document->setExtraField('VIDEO_HEIGHT', $ogVideoHeight);
}
}
}
}