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<?php |
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/** |
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* Follow handler file. |
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* |
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* @package Activitypub |
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*/ |
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|
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namespace Activitypub\Handler; |
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|
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use Activitypub\Notification; |
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use Activitypub\Activity\Activity; |
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use Activitypub\Collection\Actors; |
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use Activitypub\Collection\Followers; |
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|
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use function Activitypub\add_to_outbox; |
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|
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/** |
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* Handle Follow requests. |
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*/ |
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class Follow { |
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/** |
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* Initialize the class, registering WordPress hooks. |
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*/ |
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public static function init() { |
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\add_action( |
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'activitypub_inbox_follow', |
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array( self::class, 'handle_follow' ) |
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); |
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|
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\add_action( |
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'activitypub_followers_post_follow', |
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array( self::class, 'queue_accept' ), |
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10, |
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4 |
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); |
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} |
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|
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/** |
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* Handle "Follow" requests. |
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* |
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* @param array $activity The activity object. |
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*/ |
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public static function handle_follow( $activity ) { |
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$user = Actors::get_by_resource( $activity['object'] ); |
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|
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if ( ! $user || is_wp_error( $user ) ) { |
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// If we can not find a user, we can not initiate a follow process. |
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return; |
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} |
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|
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$user_id = $user->get__id(); |
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|
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// Save follower. |
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$remote_actor = Followers::add_follower( |
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$user_id, |
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$activity['actor'] |
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); |
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|
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if ( \is_wp_error( $remote_actor ) ) { |
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return $remote_actor; |
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} |
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|
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$remote_actor = \get_post( $remote_actor ); |
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|
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/** |
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* Fires after a new follower has been added. |
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* |
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* @param string $actor The URL of the actor (follower) who initiated the follow. |
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* @param array $activity The complete activity data of the follow request. |
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* @param int $user_id The ID of the WordPress user being followed. |
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* @param \WP_Post|\WP_Error $remote_actor The Actor object containing the new follower's data. |
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*/ |
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do_action( 'activitypub_followers_post_follow', $activity['actor'], $activity, $user_id, $remote_actor ); |
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|
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// Send notification. |
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$notification = new Notification( |
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'follow', |
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$remote_actor->guid, |
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$activity, |
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$user_id |
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); |
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$notification->send(); |
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} |
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|
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/** |
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* Send Accept response. |
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* |
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* @param string $actor The Actor URL. |
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* @param array $activity_object The Activity object. |
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* @param int $user_id The ID of the WordPress User. |
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* @param \WP_Post|\WP_Error $remote_actor The Actor object. |
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*/ |
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public static function queue_accept( $actor, $activity_object, $user_id, $remote_actor ) { |
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if ( \is_wp_error( $remote_actor ) ) { |
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// Impossible to send a "Reject" because we can not get the Remote-Inbox. |
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return; |
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} |
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|
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// Only send minimal data. |
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$activity_object = array_intersect_key( |
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$activity_object, |
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array_flip( |
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array( |
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'id', |
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'type', |
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'actor', |
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'object', |
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) |
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) |
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); |
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|
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$activity = new Activity(); |
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$activity->set_type( 'Accept' ); |
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$activity->set_actor( Actors::get_by_id( $user_id )->get_id() ); |
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$activity->set_object( $activity_object ); |
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$activity->set_to( array( $actor ) ); |
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|
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add_to_outbox( $activity, null, $user_id, ACTIVITYPUB_CONTENT_VISIBILITY_PRIVATE ); |
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} |
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} |
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|
