enhanced-open-graph.php — Jetpack – WP Security, Backup, Speed, & Growth 14.8.1

jetpack / enhanced-open-graph.php

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enhanced-open-graph.php

171 lines

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