André Menrath
d77cdf1430
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378 lines
9.2 KiB
PHP
378 lines
9.2 KiB
PHP
<?php
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/**
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* Event sources collection file.
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*
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* @package Event_Bridge_For_ActivityPub
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* @license AGPL-3.0-or-later
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*/
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namespace Event_Bridge_For_ActivityPub\ActivityPub\Collection;
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use WP_Error;
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use WP_Query;
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use Event_Bridge_For_ActivityPub\ActivityPub\Model\Event_Source;
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use function Activitypub\is_tombstone;
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use function Activitypub\get_remote_metadata_by_actor;
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/**
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* ActivityPub Event Sources (=Followed Actors) Collection.
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*/
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class Event_Sources {
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/**
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* The custom post type.
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*/
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const POST_TYPE = 'ebap_event_source';
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/**
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* Register the post type used to store the external event sources (i.e., followed ActivityPub actors).
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*/
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public static function register_post_type() {
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register_post_type(
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self::POST_TYPE,
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array(
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'labels' => array(
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'name' => _x( 'Event Sources', 'post_type plural name', 'event-bridge-for-activitypub' ),
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'singular_name' => _x( 'Event Source', 'post_type single name', 'event-bridge-for-activitypub' ),
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),
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'public' => false,
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'hierarchical' => false,
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'rewrite' => false,
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'query_var' => false,
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'delete_with_user' => false,
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'can_export' => true,
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'supports' => array(),
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)
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);
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\register_post_meta(
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self::POST_TYPE,
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'activitypub_actor_id',
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array(
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'type' => 'string',
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'single' => true,
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'sanitize_callback' => 'sanitize_url',
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)
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);
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\register_post_meta(
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self::POST_TYPE,
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'activitypub_errors',
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array(
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'type' => 'string',
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'single' => false,
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'sanitize_callback' => function ( $value ) {
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if ( ! is_string( $value ) ) {
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throw new \Exception( 'Error message is no valid string' );
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}
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return esc_sql( $value );
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},
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)
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);
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\register_post_meta(
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self::POST_TYPE,
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'activitypub_actor_json',
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array(
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'type' => 'string',
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'single' => true,
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'sanitize_callback' => function ( $value ) {
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return sanitize_text_field( $value );
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},
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)
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);
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\register_post_meta(
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self::POST_TYPE,
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'event_source_active',
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array(
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'type' => 'bool',
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'single' => true,
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)
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);
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\register_post_meta(
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self::POST_TYPE,
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'activitypub_inbox',
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array(
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'type' => 'string',
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'single' => true,
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'sanitize_callback' => 'sanitize_url',
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)
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);
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\register_post_meta(
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self::POST_TYPE,
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'event_source_utilize_announces',
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array(
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'type' => 'string',
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'single' => true,
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'sanitize_callback' => function ( $value ) {
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if ( 'same_origin' === $value ) {
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return 'same_origin';
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}
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return '';
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},
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)
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);
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}
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/**
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* Add new Event Source.
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*
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* @param string $actor The Actor URL/ID.
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*
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* @return Event_Source|WP_Error The Followed (WP_Post array) or an WP_Error.
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*/
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public static function add_event_source( $actor ) {
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$meta = get_remote_metadata_by_actor( $actor );
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if ( is_tombstone( $meta ) ) {
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return $meta;
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}
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if ( empty( $meta ) || ! is_array( $meta ) || is_wp_error( $meta ) ) {
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return new WP_Error( 'activitypub_invalid_actor', __( 'Invalid ActivityPub Actor', 'event-bridge-for-activitypub' ), array( 'status' => 400 ) );
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}
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$event_source = new Event_Source();
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$event_source->from_array( $meta );
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$post_id = $event_source->save();
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if ( is_wp_error( $post_id ) ) {
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return $post_id;
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}
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return $event_source;
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}
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/**
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* Remove an Event Source (=Followed ActivityPub actor).
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*
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* @param string $actor The Actor URL.
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*
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* @return bool True on success, false on failure.
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*/
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public static function remove_event_source( $actor ) {
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$actor = true;
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return $actor;
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}
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/**
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* Get all Event-Sources.
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*
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* @return array The Term list of Event Sources.
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*/
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public static function get_event_sources() {
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$args = array(
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'post_type' => self::POST_TYPE,
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'posts_per_page' => -1,
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'orderby' => 'ID',
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'order' => 'DESC',
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// phpcs:ignore WordPress.DB.SlowDBQuery.slow_db_query_meta_query
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'meta_query' => array(
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array(
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'key' => 'activitypub_actor_id',
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'compare' => 'EXISTS',
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),
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),
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);
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$query = new WP_Query( $args );
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$event_sources = array_map(
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function ( $post ) {
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return Event_Source::init_from_cpt( $post );
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},
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$query->get_posts()
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);
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return $event_sources;
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}
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/**
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* Get the Event Sources along with a total count for pagination purposes.
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*
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* @param int $number Maximum number of results to return.
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* @param int $page Page number.
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* @param array $args The WP_Query arguments.
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*
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* @return array {
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* Data about the followers.
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*
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* @type array $followers List of `Follower` objects.
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* @type int $total Total number of followers.
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* }
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*/
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public static function get_event_sources_with_count( $number = -1, $page = null, $args = array() ) {
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$defaults = array(
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'post_type' => self::POST_TYPE,
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'posts_per_page' => $number,
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'paged' => $page,
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'orderby' => 'ID',
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'order' => 'DESC',
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);
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$args = wp_parse_args( $args, $defaults );
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$query = new WP_Query( $args );
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$total = $query->found_posts;
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$actors = array_map(
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function ( $post ) {
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return Event_Source::init_from_cpt( $post );
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},
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$query->get_posts()
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);
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return compact( 'actors', 'total' );
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}
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/**
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* Remove a Follower.
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*
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* @param string $event_source The Actor URL.
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*
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* @return mixed True on success, false on failure.
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*/
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public static function remove( $event_source ) {
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$post_id = Event_Source::get_wp_post_from_activitypub_actor_id( $event_source );
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return wp_delete_post( $post_id, true );
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}
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/**
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* Queue a hook to run async.
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*
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* @param string $hook The hook name.
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* @param array $args The arguments to pass to the hook.
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* @param string $unqueue_hook Optional a hook to unschedule before queuing.
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* @return void|bool Whether the hook was queued.
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*/
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public static function queue( $hook, $args, $unqueue_hook = null ) {
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if ( $unqueue_hook ) {
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$hook_timestamp = wp_next_scheduled( $unqueue_hook, $args );
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if ( $hook_timestamp ) {
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wp_unschedule_event( $hook_timestamp, $unqueue_hook, $args );
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}
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}
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if ( wp_next_scheduled( $hook, $args ) ) {
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return;
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}
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return \wp_schedule_single_event( \time(), $hook, $args );
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}
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/**
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* Prepare to follow an ActivityPub actor via a scheduled event.
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*
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* @param string $actor The ActivityPub actor.
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*
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* @return bool|WP_Error Whether the event was queued.
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*/
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public static function queue_follow_actor( $actor ) {
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$queued = self::queue(
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'event_bridge_for_activitypub_follow',
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$actor,
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'event_bridge_for_activitypub_unfollow'
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);
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return $queued;
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}
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/**
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* Follow an ActivityPub actor via the Application user.
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*
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* @param string $actor_id The ID/URL of the Actor.
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*/
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public static function activitypub_follow_actor( $actor_id ) {
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$post_id = Event_Source::get_wp_post_from_activitypub_actor_id( $actor_id );
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if ( ! $post_id ) {
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return;
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}
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$actor = Event_Source::init_from_cpt( get_post( $post_id ) );
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if ( is_wp_error( $actor ) ) {
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return $actor;
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}
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$inbox = $actor->get_shared_inbox();
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$to = $actor->get_id();
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$application = new \Activitypub\Model\Application();
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$activity = new \Activitypub\Activity\Activity();
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$activity->set_type( 'Follow' );
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$activity->set_to( null );
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$activity->set_cc( null );
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$activity->set_actor( $application->get_id() );
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$activity->set_object( $to );
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$activity->set_id( $actor . '#follow-' . \preg_replace( '~^https?://~', '', $to ) );
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$activity = $activity->to_json();
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\Activitypub\safe_remote_post( $inbox, $activity, \Activitypub\Collection\Actors::APPLICATION_USER_ID );
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}
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/**
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* Prepare to unfollow an actor via a scheduled event.
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*
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* @param string $actor The ActivityPub actor ID.
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*
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* @return bool|WP_Error Whether the event was queued.
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*/
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public static function queue_unfollow_actor( $actor ) {
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$queued = self::queue(
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'event_bridge_for_activitypub_unfollow',
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$actor,
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'event_bridge_for_activitypub_follow'
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);
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return $queued;
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}
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/**
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* Unfollow an ActivityPub actor.
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*
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* @param string $actor_id The ActivityPub actor ID.
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*/
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public static function activitypub_unfollow_actor( $actor_id ) {
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$post_id = Event_Source::get_wp_post_from_activitypub_actor_id( $actor_id );
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if ( ! $post_id ) {
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return;
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}
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$actor = Event_Source::init_from_cpt( get_post( $post_id ) );
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if ( is_wp_error( $actor ) ) {
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return $actor;
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}
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$inbox = $actor->get_shared_inbox();
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$to = $actor->get_id();
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$application = new \Activitypub\Model\Application();
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if ( is_wp_error( $inbox ) ) {
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return $inbox;
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}
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$activity = new \Activitypub\Activity\Activity();
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$activity->set_type( 'Undo' );
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$activity->set_to( null );
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$activity->set_cc( null );
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$activity->set_actor( $application->get_id() );
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$activity->set_object(
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array(
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'type' => 'Follow',
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'actor' => $actor,
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'object' => $to,
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'id' => $to,
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)
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);
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$activity->set_id( $actor . '#unfollow-' . \preg_replace( '~^https?://~', '', $to ) );
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$activity = $activity->to_json();
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\Activitypub\safe_remote_post( $inbox, $activity, \Activitypub\Collection\Actors::APPLICATION_USER_ID );
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}
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}
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