enhanced-open-graph.php — Jetpack – WP Security, Backup, Speed, & Growth 15.1.1

jetpack / enhanced-open-graph.php

jetpack Last commit date

enhanced-open-graph.php

175 lines

1	<?php
2	/**
3	* Enhanced Open Graph for Jetpack.
4	*
5	* @package automattic/jetpack
6	*/
7
8	if ( ! defined( 'ABSPATH' ) ) {
9	exit( 0 );
10	}
11
12	if ( ! class_exists( 'Jetpack_Media_Summary' ) ) {
13	require_once JETPACK__PLUGIN_DIR . '_inc/lib/class.media-summary.php';
14	}
15
16	/**
17	* Better OG Image Tags for Image Post Formats
18	*
19	* @param array $tags Array of Open Graph tags.
20	*/
21	function enhanced_og_image( $tags ) {
22	if ( ! is_singular() \|\| post_password_required() ) {
23	return $tags;
24	}
25
26	global $post;
27
28	// Bail if we do not have info about the post.
29	if ( ! $post instanceof WP_Post ) {
30	return $tags;
31	}
32
33	// Always favor featured images.
34	if ( enhanced_og_has_featured_image( $post->ID ) ) {
35	return $tags;
36	}
37
38	$summary = Jetpack_Media_Summary::get( $post->ID );
39
40	if ( 'image' !== $summary['type'] ) {
41	return $tags;
42	}
43
44	$tags['og:image'] = $summary['image'];
45	$tags['og:image:secure_url'] = $summary['secure']['image'];
46
47	return $tags;
48	}
49	add_filter( 'jetpack_open_graph_tags', 'enhanced_og_image' );
50
51	/**
52	* Better OG Image Tags for Gallery Post Formats
53	*
54	* @param array $tags Array of Open Graph tags.
55	*/
56	function enhanced_og_gallery( $tags ) {
57	if ( ! is_singular() \|\| post_password_required() ) {
58	return $tags;
59	}
60
61	global $post;
62
63	// Bail if we do not have info about the post.
64	if ( ! $post instanceof WP_Post ) {
65	return $tags;
66	}
67
68	// Always favor featured images.
69	if ( enhanced_og_has_featured_image( $post->ID ) ) {
70	return $tags;
71	}
72
73	$summary = Jetpack_Media_Summary::get( $post->ID );
74
75	if ( 'gallery' !== $summary['type'] ) {
76	return $tags;
77	}
78
79	if ( ! isset( $summary['images'] ) \|\| ! is_array( $summary['images'] ) \|\| empty( $summary['images'] ) ) {
80	return $tags;
81	}
82
83	$images = array();
84	$secures = array();
85
86	foreach ( $summary['images'] as $i => $image ) {
87	$images[] = $image['url'];
88	$secures[] = $summary['secure']['images'][ $i ]['url'];
89	}
90
91	$tags['og:image'] = $images;
92	$tags['og:image:secure_url'] = $secures;
93
94	return $tags;
95	}
96	add_filter( 'jetpack_open_graph_tags', 'enhanced_og_gallery' );
97
98	/**
99	* Allows VideoPress, YouTube, and Vimeo videos to play inline on Facebook
100	*
101	* @param array $tags Array of Open Graph tags.
102	*/
103	function enhanced_og_video( $tags ) {
104	if ( ! is_singular() \|\| post_password_required() ) {
105	return $tags;
106	}
107
108	global $post;
109
110	// Bail if we do not have info about the post.
111	if ( ! $post instanceof WP_Post ) {
112	return $tags;
113	}
114
115	// Always favor featured images.
116	if ( enhanced_og_has_featured_image( $post->ID ) ) {
117	return $tags;
118	}
119
120	$summary = Jetpack_Media_Summary::get( $post->ID );
121
122	if ( 'video' !== $summary['type'] ) {
123	if ( $summary['count']['video'] > 0 && $summary['count']['image'] < 1 ) {
124	$tags['og:image'] = $summary['image'];
125	$tags['og:image:secure_url'] = $summary['secure']['image'];
126	}
127	return $tags;
128	}
129
130	$tags['og:image'] = $summary['image'];
131	$tags['og:image:secure_url'] = $summary['secure']['image'];
132
133	// This should be html by default for youtube/vimeo, since we're linking to HTML pages.
134	$tags['og:video:type'] = isset( $summary['video_type'] ) ? $summary['video_type'] : 'text/html';
135
136	$video_url = $summary['video'];
137	$secure_video_url = $summary['secure']['video'];
138
139	if ( preg_match( '/((youtube\|vimeo)\.com\|youtu.be)/', $video_url ) ) {
140	if ( strstr( $video_url, 'youtube' ) ) {
141	$id = jetpack_get_youtube_id( $video_url );
142	$video_url = 'http://www.youtube.com/embed/' . $id;
143	$secure_video_url = 'https://www.youtube.com/embed/' . $id;
144	} elseif ( strstr( $video_url, 'vimeo' ) ) {
145	preg_match( '\|vimeo\.com/(\d+)/?$\|i', $video_url, $match );
146	if ( isset( $match[1] ) ) {
147	$id = (int) $match[1];
148	$video_url = 'http://vimeo.com/moogaloop.swf?clip_id=' . $id;
149	$secure_video_url = 'https://vimeo.com/moogaloop.swf?clip_id=' . $id;
150	}
151	}
152	}
153
154	$tags['og:video'] = $video_url;
155	$tags['og:video:secure_url'] = $secure_video_url;
156
157	if ( empty( $post->post_title ) ) {
158	/* translators: %s is the name of the site */
159	$tags['og:title'] = sprintf( __( 'Video on %s', 'jetpack' ), get_option( 'blogname' ) );
160	}
161
162	return $tags;
163	}
164	add_filter( 'jetpack_open_graph_tags', 'enhanced_og_video' );
165
166	/**
167	* Check if a post has a suitable featured image.
168	*
169	* @param int $post_id The post ID to check.
170	* @return bool True if the post has a suitable featured image, false otherwise.
171	*/
172	function enhanced_og_has_featured_image( $post_id ) {
173	return ! empty( Jetpack_PostImages::from_thumbnail( $post_id ) );
174	}
175