<?php
/**
* Enhanced Open Graph for Jetpack.
*
* @package automattic/jetpack
*/
if ( ! class_exists( 'Jetpack_Media_Summary' ) ) {
require_once JETPACK__PLUGIN_DIR . '_inc/lib/class.media-summary.php';
}
/**
* Better OG Image Tags for Image Post Formats
*
* @param array $tags Array of Open Graph tags.
*/
function enhanced_og_image( $tags ) {
if ( ! is_singular() || post_password_required() ) {
return $tags;
}
global $post;
// Bail if we do not have info about the post.
if ( ! $post instanceof WP_Post ) {
return $tags;
}
// Always favor featured images.
if ( enhanced_og_has_featured_image( $post->ID ) ) {
return $tags;
}
$summary = Jetpack_Media_Summary::get( $post->ID );
if ( 'image' !== $summary['type'] ) {
return $tags;
}
$tags['og:image'] = $summary['image'];
$tags['og:image:secure_url'] = $summary['secure']['image'];
return $tags;
}
add_filter( 'jetpack_open_graph_tags', 'enhanced_og_image' );
/**
* Better OG Image Tags for Gallery Post Formats
*
* @param array $tags Array of Open Graph tags.
*/
function enhanced_og_gallery( $tags ) {
if ( ! is_singular() || post_password_required() ) {
return $tags;
}
global $post;
// Bail if we do not have info about the post.
if ( ! $post instanceof WP_Post ) {
return $tags;
}
// Always favor featured images.
if ( enhanced_og_has_featured_image( $post->ID ) ) {
return $tags;
}
$summary = Jetpack_Media_Summary::get( $post->ID );
if ( 'gallery' !== $summary['type'] ) {
return $tags;
}
if ( ! isset( $summary['images'] ) || ! is_array( $summary['images'] ) || empty( $summary['images'] ) ) {
return $tags;
}
$images = array();
$secures = array();
foreach ( $summary['images'] as $i => $image ) {
$images[] = $image['url'];
$secures[] = $summary['secure']['images'][ $i ]['url'];
}
$tags['og:image'] = $images;
$tags['og:image:secure_url'] = $secures;
return $tags;
}
add_filter( 'jetpack_open_graph_tags', 'enhanced_og_gallery' );
/**
* Allows VideoPress, YouTube, and Vimeo videos to play inline on Facebook
*
* @param array $tags Array of Open Graph tags.
*/
function enhanced_og_video( $tags ) {
if ( ! is_singular() || post_password_required() ) {
return $tags;
}
global $post;
// Bail if we do not have info about the post.
if ( ! $post instanceof WP_Post ) {
return $tags;
}
// Always favor featured images.
if ( enhanced_og_has_featured_image( $post->ID ) ) {
return $tags;
}
$summary = Jetpack_Media_Summary::get( $post->ID );
if ( 'video' !== $summary['type'] ) {
if ( $summary['count']['video'] > 0 && $summary['count']['image'] < 1 ) {
$tags['og:image'] = $summary['image'];
$tags['og:image:secure_url'] = $summary['secure']['image'];
}
return $tags;
}
$tags['og:image'] = $summary['image'];
$tags['og:image:secure_url'] = $summary['secure']['image'];
// This should be html by default for youtube/vimeo, since we're linking to HTML pages.
$tags['og:video:type'] = isset( $summary['video_type'] ) ? $summary['video_type'] : 'text/html';
$video_url = $summary['video'];
$secure_video_url = $summary['secure']['video'];
if ( preg_match( '/((youtube|vimeo)\.com|youtu.be)/', $video_url ) ) {
if ( strstr( $video_url, 'youtube' ) ) {
$id = jetpack_get_youtube_id( $video_url );
$video_url = 'http://www.youtube.com/embed/' . $id;
$secure_video_url = 'https://www.youtube.com/embed/' . $id;
} elseif ( strstr( $video_url, 'vimeo' ) ) {
preg_match( '|vimeo\.com/(\d+)/?$|i', $video_url, $match );
$id = (int) $match[1];
$video_url = 'http://vimeo.com/moogaloop.swf?clip_id=' . $id;
$secure_video_url = 'https://vimeo.com/moogaloop.swf?clip_id=' . $id;
}
}
$tags['og:video'] = $video_url;
$tags['og:video:secure_url'] = $secure_video_url;
if ( empty( $post->post_title ) ) {
/* translators: %s is the name of the site */
$tags['og:title'] = sprintf( __( 'Video on %s', 'jetpack' ), get_option( 'blogname' ) );
}
return $tags;
}
add_filter( 'jetpack_open_graph_tags', 'enhanced_og_video' );
/**
* Check if a post has a suitable featured image.
*
* @param int $post_id The post ID to check.
* @return bool True if the post has a suitable featured image, false otherwise.
*/
function enhanced_og_has_featured_image( $post_id ) {
return ! empty( Jetpack_PostImages::from_thumbnail( $post_id ) );
}