wordpress-activitypub/includes/class-activity-dispatcher.php

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<?php
namespace Activitypub;
/**
* ActivityPub Activity_Dispatcher Class
*
* @author Matthias Pfefferle
*
* @see https://www.w3.org/TR/activitypub/
*/
class Activity_Dispatcher {
/**
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* Initialize the class, registering WordPress hooks.
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*/
public static function init() {
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\add_action( 'activitypub_send_post_activity', array( '\Activitypub\Activity_Dispatcher', 'send_post_activity' ) );
\add_action( 'activitypub_send_update_activity', array( '\Activitypub\Activity_Dispatcher', 'send_update_activity' ) );
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\add_action( 'activitypub_send_delete_activity', array( '\Activitypub\Activity_Dispatcher', 'send_delete_activity' ) );
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}
/**
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* Send "create" activities.
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*
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* @param \Activitypub\Model\Post $activitypub_post
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*/
public static function send_post_activity( Model\Post $activitypub_post ) {
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// get latest version of post
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$user_id = $activitypub_post->get_post_author();
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$activitypub_activity = new \Activitypub\Model\Activity( 'Create', \Activitypub\Model\Activity::TYPE_FULL );
$activitypub_activity->from_post( $activitypub_post );
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$inboxes = \Activitypub\get_follower_inboxes( $user_id );
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$followers_url = \get_rest_url( null, '/activitypub/1.0/users/' . intval( $user_id ) . '/followers' );
foreach ( $activitypub_activity->get_cc() as $cc ) {
if ( $cc === $followers_url ) {
continue;
}
$inbox = \Activitypub\get_inbox_by_actor( $cc );
if ( ! $inbox || \is_wp_error( $inbox ) ) {
continue;
}
// init array if empty
if ( ! isset( $inboxes[ $inbox ] ) ) {
$inboxes[ $inbox ] = array();
}
$inboxes[ $inbox ][] = $cc;
}
foreach ( $inboxes as $inbox => $to ) {
$to = array_unique( $to );
$activitypub_activity->set_to( $to );
$activity = $activitypub_activity->to_json();
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\Activitypub\safe_remote_post( $inbox, $activity, $user_id );
}
}
/**
* Send "update" activities.
*
* @param \Activitypub\Model\Post $activitypub_post
*/
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public static function send_update_activity( $activitypub_post ) {
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// get latest version of post
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$user_id = $activitypub_post->get_post_author();
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$activitypub_activity = new \Activitypub\Model\Activity( 'Update', \Activitypub\Model\Activity::TYPE_FULL );
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$activitypub_activity->from_post( $activitypub_post->to_array() );
foreach ( \Activitypub\get_follower_inboxes( $user_id ) as $inbox => $to ) {
$activitypub_activity->set_to( $to );
$activity = $activitypub_activity->to_json(); // phpcs:ignore
\Activitypub\safe_remote_post( $inbox, $activity, $user_id );
}
}
/**
* Send "delete" activities.
*
* @param \Activitypub\Model\Post $activitypub_post
*/
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public static function send_delete_activity( $activitypub_post ) {
// get latest version of post
$user_id = $activitypub_post->get_post_author();
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$activitypub_activity = new \Activitypub\Model\Activity( 'Delete', \Activitypub\Model\Activity::TYPE_FULL );
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$activitypub_activity->from_post( $activitypub_post->to_array() );
foreach ( \Activitypub\get_follower_inboxes( $user_id ) as $inbox => $to ) {
$activitypub_activity->set_to( $to );
$activity = $activitypub_activity->to_json(); // phpcs:ignore
\Activitypub\safe_remote_post( $inbox, $activity, $user_id );
}
}
}