enhanced-open-graph.php — Jetpack – WP Security, Backup, Speed, & Growth 15.9-a.1

jetpack / enhanced-open-graph.php

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enhanced-open-graph.php

198 lines

1	<?php
2	/**
3	* Enhanced Open Graph for Jetpack.
4	*
5	* @package automattic/jetpack
6	*/
7
8	use Automattic\Jetpack\Post_Media\Images;
9
10	if ( ! defined( 'ABSPATH' ) ) {
11	exit( 0 );
12	}
13
14	if ( ! class_exists( 'Jetpack_Media_Summary' ) ) {
15	require_once JETPACK__PLUGIN_DIR . '_inc/lib/class.media-summary.php';
16	}
17
18	/**
19	* Better OG Image Tags for Image Post Formats
20	*
21	* @param array $tags Array of Open Graph tags.
22	*/
23	function enhanced_og_image( $tags ) {
24	if ( ! is_singular() \|\| post_password_required() ) {
25	return $tags;
26	}
27
28	global $post;
29
30	// Bail if we do not have info about the post.
31	if ( ! $post instanceof WP_Post ) {
32	return $tags;
33	}
34
35	// Always favor featured images.
36	if ( enhanced_og_has_featured_image( $post->ID ) ) {
37	return $tags;
38	}
39
40	$summary = Jetpack_Media_Summary::get(
41	$post->ID,
42	0,
43	array(
44	'include_excerpt' => false,
45	'include_count' => false,
46	)
47	);
48
49	if ( 'image' !== $summary['type'] ) {
50	return $tags;
51	}
52
53	$tags['og:image'] = $summary['image'];
54	$tags['og:image:secure_url'] = $summary['secure']['image'];
55
56	return $tags;
57	}
58	add_filter( 'jetpack_open_graph_tags', 'enhanced_og_image' );
59
60	/**
61	* Better OG Image Tags for Gallery Post Formats
62	*
63	* @param array $tags Array of Open Graph tags.
64	*/
65	function enhanced_og_gallery( $tags ) {
66	if ( ! is_singular() \|\| post_password_required() ) {
67	return $tags;
68	}
69
70	global $post;
71
72	// Bail if we do not have info about the post.
73	if ( ! $post instanceof WP_Post ) {
74	return $tags;
75	}
76
77	// Always favor featured images.
78	if ( enhanced_og_has_featured_image( $post->ID ) ) {
79	return $tags;
80	}
81
82	$summary = Jetpack_Media_Summary::get(
83	$post->ID,
84	0,
85	array(
86	'include_excerpt' => false,
87	'include_count' => false,
88	)
89	);
90
91	if ( 'gallery' !== $summary['type'] ) {
92	return $tags;
93	}
94
95	if ( ! isset( $summary['images'] ) \|\| ! is_array( $summary['images'] ) \|\| empty( $summary['images'] ) ) {
96	return $tags;
97	}
98
99	$images = array();
100	$secures = array();
101
102	foreach ( $summary['images'] as $i => $image ) {
103	$images[] = $image['url'];
104	$secures[] = $summary['secure']['images'][ $i ]['url'];
105	}
106
107	$tags['og:image'] = $images;
108	$tags['og:image:secure_url'] = $secures;
109
110	return $tags;
111	}
112	add_filter( 'jetpack_open_graph_tags', 'enhanced_og_gallery' );
113
114	/**
115	* Allows VideoPress, YouTube, and Vimeo videos to play inline on Facebook
116	*
117	* @param array $tags Array of Open Graph tags.
118	*/
119	function enhanced_og_video( $tags ) {
120	if ( ! is_singular() \|\| post_password_required() ) {
121	return $tags;
122	}
123
124	global $post;
125
126	// Bail if we do not have info about the post.
127	if ( ! $post instanceof WP_Post ) {
128	return $tags;
129	}
130
131	// Always favor featured images.
132	if ( enhanced_og_has_featured_image( $post->ID ) ) {
133	return $tags;
134	}
135
136	$summary = Jetpack_Media_Summary::get(
137	$post->ID,
138	0,
139	array(
140	'include_excerpt' => false,
141	'include_count' => false,
142	)
143	);
144
145	if ( 'video' !== $summary['type'] ) {
146	if ( $summary['count']['video'] > 0 && $summary['count']['image'] < 1 ) {
147	$tags['og:image'] = $summary['image'];
148	$tags['og:image:secure_url'] = $summary['secure']['image'];
149	}
150	return $tags;
151	}
152
153	$tags['og:image'] = $summary['image'];
154	$tags['og:image:secure_url'] = $summary['secure']['image'];
155
156	// This should be html by default for youtube/vimeo, since we're linking to HTML pages.
157	$tags['og:video:type'] = isset( $summary['video_type'] ) ? $summary['video_type'] : 'text/html';
158
159	$video_url = $summary['video'];
160	$secure_video_url = $summary['secure']['video'];
161
162	if ( preg_match( '/((youtube\|vimeo)\.com\|youtu.be)/', $video_url ) ) {
163	if ( strstr( $video_url, 'youtube' ) ) {
164	$id = jetpack_get_youtube_id( $video_url );
165	$video_url = 'http://www.youtube.com/embed/' . $id;
166	$secure_video_url = 'https://www.youtube.com/embed/' . $id;
167	} elseif ( strstr( $video_url, 'vimeo' ) ) {
168	preg_match( '\|vimeo\.com/(\d+)/?$\|i', $video_url, $match );
169	if ( isset( $match[1] ) ) {
170	$id = (int) $match[1];
171	$video_url = 'http://vimeo.com/moogaloop.swf?clip_id=' . $id;
172	$secure_video_url = 'https://vimeo.com/moogaloop.swf?clip_id=' . $id;
173	}
174	}
175	}
176
177	$tags['og:video'] = $video_url;
178	$tags['og:video:secure_url'] = $secure_video_url;
179
180	if ( empty( $post->post_title ) ) {
181	/* translators: %s is the name of the site */
182	$tags['og:title'] = sprintf( __( 'Video on %s', 'jetpack' ), get_option( 'blogname' ) );
183	}
184
185	return $tags;
186	}
187	add_filter( 'jetpack_open_graph_tags', 'enhanced_og_video' );
188
189	/**
190	* Check if a post has a suitable featured image.
191	*
192	* @param int $post_id The post ID to check.
193	* @return bool True if the post has a suitable featured image, false otherwise.
194	*/
195	function enhanced_og_has_featured_image( $post_id ) {
196	return ! empty( Images::from_thumbnail( $post_id ) );
197	}
198