diff options
Diffstat (limited to 'plugins/jetpack/enhanced-open-graph.php')
| -rw-r--r-- | plugins/jetpack/enhanced-open-graph.php | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/plugins/jetpack/enhanced-open-graph.php b/plugins/jetpack/enhanced-open-graph.php new file mode 100644 index 00000000..ea260e93 --- /dev/null +++ b/plugins/jetpack/enhanced-open-graph.php @@ -0,0 +1,172 @@ +<?php +/** + * Enhanced Open Graph for Jetpack. + * + * @package automattic/jetpack + */ + +if ( ! class_exists( 'Jetpack_Media_Summary' ) ) { + if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) { + include WP_CONTENT_DIR . '/lib/class.wpcom-media-summary.php'; + } else { + jetpack_require_lib( 'class.media-summary' ); + } +} + +/** + * 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 ) ); +} |