embed-privacy / inc / class-embed-privacy.php

class-embed-privacy.php in Embed Privacy 0.1, at inc/class-embed-privacy.php

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1	<?php
2	namespace epiphyt\Embed_Privacy;
3
4	/**
5	* Two click embed main class.
6	*
7	* @author Epiphyt
8	* @license GPL2
9	* @package epiphyt\Embed_Privacy
10	* @version 0.1
11	*/
12	class Embed_Privacy {
13	/**
14	* @var bool Determine if we use the cache
15	*/
16	private $usecache = false;
17
18	/**
19	* @var array The supported media providers
20	*/
21	public $embed_providers = [
22	'animoto.com' => 'Animoto',
23	'cloudup.com' => 'Cloudup',
24	'collegehumor.com' => 'CollegeHumor',
25	'dailymotion.com' => 'DailyMotion',
26	'facebook.com' => 'Facebook',
27	'flickr.com' => 'Flickr',
28	'funnyordie.com' => 'Funny Or Die',
29	'hulu.com' => 'Hulu',
30	'imgur.com' => 'Imgur',
31	'instagram.com' => 'Instagram',
32	'issuu.com' => 'Issuu',
33	'kickstarter.com' => 'Kickstarter',
34	'meetup.com' => 'Meetup',
35	'mixcloud.com' => 'Mixcloud',
36	'photobucket.com' => 'Photobucket',
37	'polldaddy.com' => 'Polldaddy.com',
38	'reddit.com' => 'Reddit',
39	'reverbnation.com' => 'ReverbNation',
40	'scribd.com' => 'Scribd',
41	'sketchfab.com' => 'Sketchfab',
42	'slideshare.com' => 'SlideShare',
43	'smugmug.com' => 'SmugMug',
44	'soundcloud.com' => 'SoundCloud',
45	'speakerdeck.com' => 'Speaker Deck',
46	'spotify.com' => 'Spotify',
47	'ted.com' => 'TED',
48	'tumblr.com' => 'Tumblr',
49	'twitter.com' => 'Twitter',
50	'videopress.com' => 'VideoPres',
51	'vimeo.com' => 'Vimeo',
52	'wordpress.org/plugins' => 'WordPress.org',
53	'wordpress.tv' => 'WordPress.tv',
54	'youtu.be' => 'YouTube',
55	'youtube.com' => 'YouTube',
56	];
57
58	/**
59	* Embed Privacy constructor.
60	*/
61	public function __construct() {
62	// actions
63	\add_action( 'init', [ $this, 'load_textdomain' ] );
64	\add_action( 'wp_enqueue_scripts', [ $this, 'enqueue_assets' ] );
65
66	$this->usecache = ! \is_admin();
67
68	// filters
69	if ( ! $this->usecache ) {
70	// set ttl to 0 in admin
71	\add_filter( 'oembed_ttl', function( $time ) {
72	return 0;
73	}, 10, 1 );
74	}
75
76	\add_filter( 'embed_oembed_html', [ $this, 'replace_embeds' ], 10, 3 );
77	}
78
79	/**
80	* Embeds are cached in the postmeta database table and need to be removed
81	* whenever the plugin will be enabled or disabled.
82	*/
83	public function clear_embed_cache() {
84	global $wpdb;
85
86	// the query to delete cache
87	$query = "DELETE FROM " . $wpdb->get_blog_prefix() . "postmeta
88	WHERE meta_key LIKE '%_oembed_%'";
89
90	if ( \is_plugin_active_for_network( 'embed-privacy/embed-privacy.php' ) ) {
91	// on networks we need to iterate through every site
92	$sites = \get_sites( 99999 );
93
94	foreach ( $sites as $site ) {
95	\switch_to_blog( $site );
96
97	$wpdb->query( $query );
98	}
99	}
100	else {
101	$wpdb->query( $query );
102	}
103	}
104
105	/**
106	* Enqueue our assets for the frontend.
107	*/
108	public function enqueue_assets() {
109	$suffix = ( \defined( 'DEBUG_MODE' ) && \DEBUG_MODE ? '' : '.min' );
110	$css_file = \EPI_EMBED_PRIVACY_BASE . 'assets/style/embed-privacy' . $suffix . '.css';
111	$css_file_url = \EPI_EMBED_PRIVACY_URL . 'assets/style/embed-privacy' . $suffix . '.css';
112
113	\wp_enqueue_style( 'embed-privacy', $css_file_url, [], \filemtime( $css_file ) );
114
115	$js_file = \EPI_EMBED_PRIVACY_BASE . 'assets/js/embed-privacy' . $suffix . '.js';
116	$js_file_url = \EPI_EMBED_PRIVACY_URL . 'assets/js/embed-privacy' . $suffix . '.js';
117
118	\wp_enqueue_script( 'two-click_embed', $js_file_url, [], \filemtime( $js_file ) );
119	}
120
121	/**
122	* Load the translation files.
123	*/
124	public function load_textdomain() {
125	\load_plugin_textdomain( 'embed-privacy', false, \EPI_EMBED_PRIVACY_BASE . 'languages' );
126	}
127
128	/**
129	* Replace embeds with a container and hide the embed with an HTML comment.
130	*
131	* @param string $output
132	* @param string $url
133	* @param array $args
134	* @return string
135	*/
136	public function replace_embeds( $output, $url, $args ) {
137	// don't do anything in admin
138	if ( ! $this->usecache ) return $output;
139
140	$embed_provider = '';
141
142	// get embed provider name
143	foreach ( $this->embed_providers as $url_part => $name ) {
144	// save name of provider and stop loop
145	if ( \strpos( $url, $url_part ) !== false ) {
146	$embed_provider = $name;
147	break;
148	}
149	}
150
151	// add two click to markup
152	$embed_class = ' embed-' . ( ! empty( $embed_provider ) ? \sanitize_title( $embed_provider ) : 'default' );
153	$height = ( ! empty( $args['height'] ) && $args['height'] <= $args['width'] ? 'height: ' . $args['height'] . 'px;' : 'height: 300px;' );
154	$width = ( ! empty( $args['width'] ) ? 'width: ' . $args['width'] . 'px;' : '' );
155	$markup = '<div class="embed-container' . $embed_class . '">';
156	$markup .= '<div class="embed-overlay" style="' . $height . ' ' . $width . '">';
157	$markup .= '<h3>';
158
159	if ( ! empty( $embed_provider ) ) {
160	/* translators: the embed provider */
161	$markup .= \sprintf( \esc_html__( 'Click here to display content from %s', 'embed-privacy' ), $embed_provider );
162	}
163	else {
164	$markup .= \esc_html__( 'Click here to display content from external service', 'embed-privacy' );
165	}
166
167	$markup .= '</h3>';
168	$markup .= '</div>';
169	$markup .= '<div class="embed-content"><!-- ' . $output . ' --></div>';
170	$markup .= '</div>';
171
172	return $markup;
173	}
174	}
175