activitypub / includes / class-migration.php

class-migration.php in ActivityPub 1.0.5, at includes/class-migration.php

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1	<?php
2	namespace Activitypub;
3
4	use Activitypub\Activitypub;
5	use Activitypub\Model\Blog_User;
6	use Activitypub\Collection\Followers;
7
8	/**
9	* ActivityPub Migration Class
10	*
11	* @author Matthias Pfefferle
12	*/
13	class Migration {
14	/**
15	* Initialize the class, registering WordPress hooks
16	*/
17	public static function init() {
18	\add_action( 'activitypub_schedule_migration', array( self::class, 'maybe_migrate' ) );
19	}
20
21	/**
22	* Get the target version.
23	*
24	* This is the version that the database structure will be updated to.
25	* It is the same as the plugin version.
26	*
27	* @return string The target version.
28	*/
29	public static function get_target_version() {
30	return get_plugin_version();
31	}
32
33	/**
34	* The current version of the database structure.
35	*
36	* @return string The current version.
37	*/
38	public static function get_version() {
39	return get_option( 'activitypub_db_version', 0 );
40	}
41
42	/**
43	* Locks the database migration process to prevent simultaneous migrations.
44	*
45	* @return void
46	*/
47	public static function lock() {
48	\update_option( 'activitypub_migration_lock', \time() );
49	}
50
51	/**
52	* Unlocks the database migration process.
53	*
54	* @return void
55	*/
56	public static function unlock() {
57	\delete_option( 'activitypub_migration_lock' );
58	}
59
60	/**
61	* Whether the database migration process is locked.
62	*
63	* @return boolean
64	*/
65	public static function is_locked() {
66	$lock = \get_option( 'activitypub_migration_lock' );
67
68	if ( ! $lock ) {
69	return false;
70	}
71
72	$lock = (int) $lock;
73
74	if ( $lock < \time() - 1800 ) {
75	self::unlock();
76	return false;
77	}
78
79	return true;
80	}
81
82	/**
83	* Whether the database structure is up to date.
84	*
85	* @return bool True if the database structure is up to date, false otherwise.
86	*/
87	public static function is_latest_version() {
88	return (bool) version_compare(
89	self::get_version(),
90	self::get_target_version(),
91	'=='
92	);
93	}
94
95	/**
96	* Updates the database structure if necessary.
97	*/
98	public static function maybe_migrate() {
99	if ( self::is_latest_version() ) {
100	return;
101	}
102
103	if ( self::is_locked() ) {
104	return;
105	}
106
107	self::lock();
108
109	$version_from_db = self::get_version();
110
111	if ( version_compare( $version_from_db, '0.17.0', '<' ) ) {
112	self::migrate_from_0_16();
113	}
114	if ( version_compare( $version_from_db, '1.0.0', '<' ) ) {
115	self::migrate_from_0_17();
116	}
117
118	update_option( 'activitypub_db_version', self::get_target_version() );
119
120	self::unlock();
121	}
122
123	/**
124	* Updates the DB-schema of the followers-list
125	*
126	* @return void
127	*/
128	private static function migrate_from_0_17() {
129	// migrate followers
130	foreach ( get_users( array( 'fields' => 'ID' ) ) as $user_id ) {
131	$followers = get_user_meta( $user_id, 'activitypub_followers', true );
132
133	if ( $followers ) {
134	foreach ( $followers as $actor ) {
135	Followers::add_follower( $user_id, $actor );
136	}
137	}
138	}
139
140	Activitypub::flush_rewrite_rules();
141	}
142
143	/**
144	* Updates the custom template to use shortcodes instead of the deprecated templates.
145	*
146	* @return void
147	*/
148	private static function migrate_from_0_16() {
149	// Get the custom template.
150	$old_content = \get_option( 'activitypub_custom_post_content', ACTIVITYPUB_CUSTOM_POST_CONTENT );
151
152	// If the old content exists but is a blank string, we're going to need a flag to updated it even
153	// after setting it to the default contents.
154	$need_update = false;
155
156	// If the old contents is blank, use the defaults.
157	if ( '' === $old_content ) {
158	$old_content = ACTIVITYPUB_CUSTOM_POST_CONTENT;
159	$need_update = true;
160	}
161
162	// Set the new content to be the old content.
163	$content = $old_content;
164
165	// Convert old templates to shortcodes.
166	$content = \str_replace( '%title%', '[ap_title]', $content );
167	$content = \str_replace( '%excerpt%', '[ap_excerpt]', $content );
168	$content = \str_replace( '%content%', '[ap_content]', $content );
169	$content = \str_replace( '%permalink%', '[ap_permalink type="html"]', $content );
170	$content = \str_replace( '%shortlink%', '[ap_shortlink type="html"]', $content );
171	$content = \str_replace( '%hashtags%', '[ap_hashtags]', $content );
172	$content = \str_replace( '%tags%', '[ap_hashtags]', $content );
173
174	// Store the new template if required.
175	if ( $content !== $old_content \|\| $need_update ) {
176	\update_option( 'activitypub_custom_post_content', $content );
177	}
178	}
179	}
180