/**
* Add OpenGraph metadata tags.
*
* @param string $output
* @return void
*/
function _addOpenGraphMetadata()
{
// Get information about the current request.
$page_type = 'website';
$current_module_info = Context::get('current_module_info');
$site_module_info = Context::get('site_module_info');
$document_srl = Context::get('document_srl');
if ($document_srl) {
$oDocument = Context::get('oDocument') ?: getModel('document')->getDocument($document_srl, false, false);
if ($oDocument instanceof documentItem && $oDocument->document_srl == $document_srl && !$oDocument->isSecret()) {
$page_type = 'article';
}
}
// Add basic metadata.
Context::addOpenGraphData('og:title', Context::getBrowserTitle());
Context::addOpenGraphData('og:site_name', Context::getSiteTitle());
if ($page_type === 'article' && config('seo.og_extract_description')) {
$description = trim(utf8_normalize_spaces($oDocument->getContentText(200)));
} else {
$description = Context::getMetaTag('description');
}
Context::addOpenGraphData('og:description', $description);
Context::addMetaTag('description', $description);
// Add metadata about this page.
Context::addOpenGraphData('og:type', $page_type);
if ($page_type === 'article') {
$canonical_url = getFullUrl('', 'mid', $current_module_info->mid, 'document_srl', $document_srl);
} elseif (($page = Context::get('page')) > 1) {
$canonical_url = getFullUrl('', 'mid', $current_module_info->mid, 'page', $page);
} elseif ($current_module_info->module_srl == $site_module_info->module_srl) {
$canonical_url = getFullUrl('');
} else {
$canonical_url = getFullUrl('', 'mid', $current_module_info->mid);
}
Context::addOpenGraphData('og:url', $canonical_url);
Context::setCanonicalURL($canonical_url);
// Add metadata about the locale.
$lang_type = Context::getLangType();
$locales = (include \RX_BASEDIR . 'common/defaults/locales.php');
if (isset($locales[$lang_type])) {
Context::addOpenGraphData('og:locale', $locales[$lang_type]['locale']);
}
if ($page_type === 'article' && $oDocument->getLangCode() !== $lang_type && isset($locales[$oDocument->getLangCode()])) {
Context::addOpenGraphData('og:locale:alternate', $locales[$oDocument->getLangCode()]);
}
// Add image.
if ($page_type === 'article' && config('seo.og_extract_images')) {
if (($document_images = Rhymix\Framework\Cache::get("seo:document_images:{$document_srl}")) === null) {
$document_images = array();
if ($oDocument->hasUploadedFiles()) {
foreach ($oDocument->getUploadedFiles() as $file) {
if ($file->isvalid !== 'Y' || !preg_match('/\\.(?:bmp|gif|jpe?g|png)$/i', $file->uploaded_filename)) {
continue;
}
list($width, $height) = @getimagesize($file->uploaded_filename);
if ($width < 100 && $height < 100) {
continue;
}
$image = array('filepath' => $file->uploaded_filename, 'width' => $width, 'height' => $height);
if ($file->cover_image === 'Y') {
array_unshift($document_images, $image);
} else {
$document_images[] = $image;
}
if (count($document_images) >= 1) {
break;
}
}
}
Rhymix\Framework\Cache::set("seo:document_images:{$document_srl}", $document_images, 0, true);
}
} else {
$document_images = null;
}
if ($document_images) {
$first_image = reset($document_images);
$first_image['filepath'] = preg_replace('/^.\\/files\\//', \RX_BASEURL . 'files/', $first_image['filepath']);
Context::addOpenGraphData('og:image', Rhymix\Framework\URL::getCurrentDomainURL($first_image['filepath']));
Context::addOpenGraphData('og:image:width', $first_image['width']);
Context::addOpenGraphData('og:image:height', $first_image['height']);
} elseif ($default_image = getAdminModel('admin')->getSiteDefaultImageUrl($width, $height)) {
Context::addOpenGraphData('og:image', Rhymix\Framework\URL::getCurrentDomainURL($default_image));
if ($width && $height) {
Context::addOpenGraphData('og:image:width', $width);
Context::addOpenGraphData('og:image:height', $height);
}
}
// Add datetime for articles.
if ($page_type === 'article' && config('seo.og_use_timestamps')) {
Context::addOpenGraphData('article:published_time', $oDocument->getRegdate('c'));
Context::addOpenGraphData('article:modified_time', $oDocument->getUpdate('c'));
}
}
