enhanced-open-graph.php — Jetpack – WP Security, Backup, Speed, & Growth 15.4.1

jetpack / enhanced-open-graph.php

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enhanced-open-graph.php

196 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(
39	$post->ID,
40	0,
41	array(
42	'include_excerpt' => false,
43	'include_count' => false,
44	)
45	);
46
47	if ( 'image' !== $summary['type'] ) {
48	return $tags;
49	}
50
51	$tags['og:image'] = $summary['image'];
52	$tags['og:image:secure_url'] = $summary['secure']['image'];
53
54	return $tags;
55	}
56	add_filter( 'jetpack_open_graph_tags', 'enhanced_og_image' );
57
58	/**
59	* Better OG Image Tags for Gallery Post Formats
60	*
61	* @param array $tags Array of Open Graph tags.
62	*/
63	function enhanced_og_gallery( $tags ) {
64	if ( ! is_singular() \|\| post_password_required() ) {
65	return $tags;
66	}
67
68	global $post;
69
70	// Bail if we do not have info about the post.
71	if ( ! $post instanceof WP_Post ) {
72	return $tags;
73	}
74
75	// Always favor featured images.
76	if ( enhanced_og_has_featured_image( $post->ID ) ) {
77	return $tags;
78	}
79
80	$summary = Jetpack_Media_Summary::get(
81	$post->ID,
82	0,
83	array(
84	'include_excerpt' => false,
85	'include_count' => false,
86	)
87	);
88
89	if ( 'gallery' !== $summary['type'] ) {
90	return $tags;
91	}
92
93	if ( ! isset( $summary['images'] ) \|\| ! is_array( $summary['images'] ) \|\| empty( $summary['images'] ) ) {
94	return $tags;
95	}
96
97	$images = array();
98	$secures = array();
99
100	foreach ( $summary['images'] as $i => $image ) {
101	$images[] = $image['url'];
102	$secures[] = $summary['secure']['images'][ $i ]['url'];
103	}
104
105	$tags['og:image'] = $images;
106	$tags['og:image:secure_url'] = $secures;
107
108	return $tags;
109	}
110	add_filter( 'jetpack_open_graph_tags', 'enhanced_og_gallery' );
111
112	/**
113	* Allows VideoPress, YouTube, and Vimeo videos to play inline on Facebook
114	*
115	* @param array $tags Array of Open Graph tags.
116	*/
117	function enhanced_og_video( $tags ) {
118	if ( ! is_singular() \|\| post_password_required() ) {
119	return $tags;
120	}
121
122	global $post;
123
124	// Bail if we do not have info about the post.
125	if ( ! $post instanceof WP_Post ) {
126	return $tags;
127	}
128
129	// Always favor featured images.
130	if ( enhanced_og_has_featured_image( $post->ID ) ) {
131	return $tags;
132	}
133
134	$summary = Jetpack_Media_Summary::get(
135	$post->ID,
136	0,
137	array(
138	'include_excerpt' => false,
139	'include_count' => false,
140	)
141	);
142
143	if ( 'video' !== $summary['type'] ) {
144	if ( $summary['count']['video'] > 0 && $summary['count']['image'] < 1 ) {
145	$tags['og:image'] = $summary['image'];
146	$tags['og:image:secure_url'] = $summary['secure']['image'];
147	}
148	return $tags;
149	}
150
151	$tags['og:image'] = $summary['image'];
152	$tags['og:image:secure_url'] = $summary['secure']['image'];
153
154	// This should be html by default for youtube/vimeo, since we're linking to HTML pages.
155	$tags['og:video:type'] = isset( $summary['video_type'] ) ? $summary['video_type'] : 'text/html';
156
157	$video_url = $summary['video'];
158	$secure_video_url = $summary['secure']['video'];
159
160	if ( preg_match( '/((youtube\|vimeo)\.com\|youtu.be)/', $video_url ) ) {
161	if ( strstr( $video_url, 'youtube' ) ) {
162	$id = jetpack_get_youtube_id( $video_url );
163	$video_url = 'http://www.youtube.com/embed/' . $id;
164	$secure_video_url = 'https://www.youtube.com/embed/' . $id;
165	} elseif ( strstr( $video_url, 'vimeo' ) ) {
166	preg_match( '\|vimeo\.com/(\d+)/?$\|i', $video_url, $match );
167	if ( isset( $match[1] ) ) {
168	$id = (int) $match[1];
169	$video_url = 'http://vimeo.com/moogaloop.swf?clip_id=' . $id;
170	$secure_video_url = 'https://vimeo.com/moogaloop.swf?clip_id=' . $id;
171	}
172	}
173	}
174
175	$tags['og:video'] = $video_url;
176	$tags['og:video:secure_url'] = $secure_video_url;
177
178	if ( empty( $post->post_title ) ) {
179	/* translators: %s is the name of the site */
180	$tags['og:title'] = sprintf( __( 'Video on %s', 'jetpack' ), get_option( 'blogname' ) );
181	}
182
183	return $tags;
184	}
185	add_filter( 'jetpack_open_graph_tags', 'enhanced_og_video' );
186
187	/**
188	* Check if a post has a suitable featured image.
189	*
190	* @param int $post_id The post ID to check.
191	* @return bool True if the post has a suitable featured image, false otherwise.
192	*/
193	function enhanced_og_has_featured_image( $post_id ) {
194	return ! empty( Jetpack_PostImages::from_thumbnail( $post_id ) );
195	}
196