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<?php |
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namespace Activitypub\Handler; |
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|
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use Activitypub\Http; |
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use Activitypub\Activity\Activity; |
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use Activitypub\Collection\Users; |
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use Activitypub\Collection\Followers; |
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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, 'send_follow_response' ), |
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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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* @param int $user_id The user ID |
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*/ |
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public static function handle_follow( $activity ) { |
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$user = Users::get_by_resource( $activity['object'] ); |
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|
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if ( ! $user || is_wp_error( $user ) ) { |
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// If we can not find a user, |
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// we can not initiate a follow process |
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return; |
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} |
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|
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$user_id = $user->get__id(); |
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|
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// save follower |
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$follower = 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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do_action( |
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'activitypub_followers_post_follow', |
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$activity['actor'], |
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$activity, |
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$user_id, |
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$follower |
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); |
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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 $object The Activity object |
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* @param int $user_id The ID of the WordPress User |
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* @param Activitypub\Model\Follower $follower The Follower object |
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* |
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* @return void |
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*/ |
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public static function send_follow_response( $actor, $object, $user_id, $follower ) { |
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if ( \is_wp_error( $follower ) ) { |
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// it is not even possible to send a "Reject" because |
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// we can not get the Remote-Inbox |
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return; |
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} |
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|
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// only send minimal data |
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$object = array_intersect_key( |
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$object, |
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array_flip( |
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array( |
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'id', |
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'type', |
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'actor', |
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'object', |
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) |
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) |
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); |
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|
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$user = Users::get_by_id( $user_id ); |
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|
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// get inbox |
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$inbox = $follower->get_shared_inbox(); |
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|
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// send "Accept" activity |
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$activity = new Activity(); |
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$activity->set_type( 'Accept' ); |
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$activity->set_object( $object ); |
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$activity->set_actor( $user->get_id() ); |
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$activity->set_to( $actor ); |
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$activity->set_id( $user->get_id() . '#follow-' . \preg_replace( '~^https?://~', '', $actor ) . '-' . \time() ); |
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|
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$activity = $activity->to_json(); |
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|
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Http::post( $inbox, $activity, $user_id ); |
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} |
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} |
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|
