<?php
        // Open Graph for articles
        $pageType = $c->getCollectionTypeHandle();
 
        if($pageType === "article") {
            $url = 'https://' . $_SERVER['HTTP_HOST'] . $c->getCollectionPath();
            $title = $c->getCollectionName();
            $desc = $c->getCollectionDescription();
            $ih = Loader::helper('image');
            $thumbnail = $c->getAttribute('featured');
            if($thumbnail) {
                $imageUrl = 'https://' . $_SERVER['HTTP_HOST'] . $ih->getThumbnail($c->getAttribute('featured'), 1200, 600)->src;
            }
            else {
                $imageUrl = "";
            }
        ?>
        <meta property="og:type" content="article" /> 
        <meta property="og:url" content="<?php echo $url ?>" /> 
        <meta property="og:title" content="<?php echo $title ?>" /> 
        <meta property="og:description" content="<?php echo $desc ?>" /> 
        <meta property="og:image" content="<?php echo $imageUrl ?>" /> 
        <meta property="og:image:type" content="image/<?php echo strtolower($thumbnail->getType()) ?>" />
        <meta property="og:image:width" content="<?php echo $thumbnail->getAttribute('width') ?>" /> 
        <meta property="og:image:height" content="<?php echo $thumbnail->getAttribute('height') ?>" /> 
        <meta property="og:image:alt" content="<?php echo $title ?>" />
        <?php } ?>