post_author = Users::BLOG_USER_ID; if ( is_single_user() ) { self::send_activity( $wp_post, $type ); } else { self::send_announce( $wp_post, $type ); } } /** * Send Activities to followers and mentioned users. * * @param WP_Post $wp_post The ActivityPub Post. * @param string $type The Activity-Type. * * @return void */ public static function send_activity( WP_Post $wp_post, $type ) { if ( is_user_disabled( $wp_post->post_author ) ) { return; } $object = Post::transform( $wp_post )->to_object(); $activity = new Activity(); $activity->set_type( $type ); $activity->set_object( $object ); self::send_activity_to_inboxes( $activity, $wp_post->post_author ); } /** * Send Announces to followers and mentioned users. * * @param WP_Post $wp_post The ActivityPub Post. * @param string $type The Activity-Type. * * @return void */ public static function send_announce( WP_Post $wp_post, $type ) { if ( ! in_array( $type, array( 'Create', 'Update' ), true ) ) { return; } if ( is_user_disabled( Users::BLOG_USER_ID ) ) { return; } $object = Post::transform( $wp_post )->to_object(); $activity = new Activity(); $activity->set_type( 'Announce' ); // to pre-fill attributes like "published" and "id" $activity->set_object( $object ); // send only the id $activity->set_object( $object->get_id() ); self::send_activity_to_inboxes( $activity, $wp_post->post_author ); } /** * Send a "Update" Activity when a user updates their profile. * * @param int $user_id The user ID to send an update for. * */ public static function send_profile_update( $user_id ) { $user = Users::get_by_various( $user_id ); // bail if that's not a good user if ( is_wp_error( $user ) ) { return; } // build the update $activity = new Activity(); $activity->set_id( $user->get_url() . '#update' ); $activity->set_type( 'Update' ); $activity->set_actor( $user->get_url() ); $activity->set_object( $user->get_url() ); $activity->set_to( 'https://www.w3.org/ns/activitystreams#Public' ); // send the update self::send_activity_to_inboxes( $activity, $user_id ); } /** * Send an Activity to all followers and mentioned users. * * @param Activity $activity The ActivityPub Activity. * @param int $user_id The user ID. * * @return void */ private static function send_activity_to_inboxes( $activity, $user_id ) { $follower_inboxes = Followers::get_inboxes( $user_id ); $mentioned_inboxes = array(); $cc = $activity->get_cc(); if ( $cc ) { $mentioned_inboxes = Mention::get_inboxes( $cc ); } $inboxes = array_merge( $follower_inboxes, $mentioned_inboxes ); $inboxes = array_unique( $inboxes ); if ( empty( $inboxes ) ) { return; } $json = $activity->to_json(); foreach ( $inboxes as $inbox ) { safe_remote_post( $inbox, $json, $user_id ); } } /** * Send an Activity to all known (shared_)inboxes. * * @param Activity $activity The ActivityPub Activity. * * @return void */ private static function send_server_activity( $activity ) { $json = $activity->to_json(); $inboxes = Server::known_inboxes(); foreach ( $inboxes as $inbox ) { safe_remote_post( $inbox, $json, -1 ); } } }