opengraph.php

<?
 
namespace Bitrix\Main\UrlPreview\Parser;
 
use Bitrix\Main\UrlPreview\HtmlDocument;
use Bitrix\Main\UrlPreview\Parser;
 
class OpenGraph extends Parser
{
    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);
            }
        }
    }
}