/**
* Insert HTML meta tags into site head.
*/
public function insert_twitter_card_metadata()
{
$post_id = get_the_ID();
if (!$post_id) {
return;
}
$episode = \Podlove\Model\Episode::find_one_by_post_id($post_id);
if (!$episode) {
return;
}
$podcast = Model\Podcast::get();
$cover_art_url = $episode->cover_art_with_fallback()->url();
// define meta tags
$data = array(array('name' => 'twitter:card', 'content' => 'summary'), array('name' => 'twitter:url', 'content' => get_permalink()), array('name' => 'twitter:title', 'content' => get_the_title()), array('name' => 'twitter:description', 'content' => $episode->description()));
if ($site = $this->get_module_option('site')) {
$data[] = array('name' => 'twitter:site', 'content' => $site);
}
if ($creator = $this->get_module_option('creator')) {
$data[] = array('name' => 'twitter:creator', 'content' => $creator);
}
if ($cover_art_url) {
$data[] = array('name' => 'twitter:image', 'content' => $cover_art_url);
}
// print meta tags
$dom = new DomDocumentFragment();
foreach ($data as $meta_element) {
$element = $dom->createElement('meta');
foreach ($meta_element as $attribute => $value) {
$element->setAttribute($attribute, $value);
}
$dom->appendChild($element);
}
echo $dom;
}
public function register_oembed_discovery()
{
// WordPress does not allow registering custom <link> elements.
if (!is_single()) {
return;
}
$post_id = get_the_ID();
if (get_post_type($post_id) !== 'podcast') {
return;
}
$permalink = get_permalink($post_id);
$permalink_template = $permalink . (strpos($permalink, '?') === FALSE ? "?" : "&");
$title = get_the_title($post_id);
$embed_elements = array(array('rel' => 'alternate', 'type' => 'application/json+oembed', 'href' => $permalink_template . "service=podlove-oembed&format=json", 'title' => $title . " oEmbed Profile"), array('rel' => 'alternate', 'type' => 'application/xml+oembed', 'href' => $permalink_template . "service=podlove-oembed&format=xml", 'title' => $title . " oEmbed Profile"));
$dom = new DomDocumentFragment();
foreach ($embed_elements as $link_element) {
$element = $dom->createElement('link');
foreach ($link_element as $attribute => $value) {
$element->setAttribute($attribute, $value);
}
$dom->appendChild($element);
}
echo $dom;
}
/**
* Insert HTML meta tags into site head.
*
* @todo caching
* @todo let user choose what's in og:description: subtitle, excerpt, ...
* @todo handle multiple releases per episode
*/
public static function get_open_graph_metadata()
{
$post_id = get_the_ID();
if (!$post_id) {
return;
}
$episode = \Podlove\Model\Episode::find_one_by_post_id($post_id);
if (!$episode) {
return;
}
$podcast = Model\Podcast::get();
$cover_art_url = $episode->cover_art_with_fallback()->url();
// determine featured image (thumbnail)
$thumbnail = NULL;
if (has_post_thumbnail()) {
$post_thumbnail_id = get_post_thumbnail_id($post_id);
$thumbnailInfo = wp_get_attachment_image_src($post_thumbnail_id);
if (is_array($thumbnailInfo)) {
list($thumbnail, $width, $height) = $thumbnailInfo;
}
}
$description = NULL;
if ($episode->summary && $episode->subtitle) {
$description = $episode->subtitle . "\n" . $episode->summary;
} elseif ($episode->summary) {
$description = $episode->summary;
} elseif ($episode->subtitle) {
$description = $episode->subtitle;
}
// define meta tags
$data = array(array('property' => 'og:type', 'content' => 'website'), array('property' => 'og:site_name', 'content' => $podcast->title ? $podcast->title : get_the_title()), array('property' => 'og:title', 'content' => get_the_title()), array('property' => 'og:url', 'content' => get_permalink()));
if ($description) {
$data[] = array('property' => 'og:description', 'content' => $description);
}
if ($cover_art_url) {
$data[] = array('property' => 'og:image', 'content' => $cover_art_url);
}
if (isset($thumbnail)) {
$data[] = array('property' => 'og:image', 'content' => $thumbnail);
}
foreach ($episode->media_files() as $media_file) {
$mime_type = $media_file->episode_asset()->file_type()->mime_type;
if (stripos($mime_type, 'audio') !== false) {
$data[] = array('property' => 'og:audio', 'content' => $media_file->get_file_url());
$data[] = array('property' => 'og:audio:type', 'content' => $mime_type);
}
}
// print meta tags
$dom = new DomDocumentFragment();
foreach ($data as $meta_element) {
$element = $dom->createElement('meta');
foreach ($meta_element as $attribute => $value) {
$element->setAttribute($attribute, $value);
}
$dom->appendChild($element);
}
return $dom;
}
private function getContributorXML($contributor)
{
$contributor_xml = '';
if ($contributor->visibility == 1) {
$dom = new \Podlove\DomDocumentFragment();
$xml = $dom->createElement('atom:contributor');
// add the empty name tag
$name = $dom->createElement('atom:name');
$xml->appendChild($name);
// fill name tag with escaped content
$name_text = $dom->createTextNode($contributor->getName());
$name->appendChild($name_text);
if ($contributor->guid) {
$xml->appendChild($dom->createElement('atom:uri', $contributor->guid));
}
$dom->appendChild($xml);
$contributor_xml .= (string) $dom;
}
return $contributor_xml;
}
