121 lines
2.6 KiB
PHP
121 lines
2.6 KiB
PHP
<?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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namespace Activitypub\Handler;
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use Activitypub\Http;
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use Activitypub\Notification;
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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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* 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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\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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* 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 = Users::get_by_resource( $activity['object'] );
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if ( ! $user || is_wp_error( $user ) ) {
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// If we can not find a user, we can not initiate a follow process.
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return;
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}
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$user_id = $user->get__id();
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// Save follower.
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$follower = Followers::add_follower(
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$user_id,
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$activity['actor']
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);
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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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// Send notification.
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$notification = new Notification(
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'follow',
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$activity['actor'],
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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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* 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 \Activitypub\Model\Follower $follower The Follower object.
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*/
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public static function send_follow_response( $actor, $activity_object, $user_id, $follower ) {
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if ( \is_wp_error( $follower ) ) {
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// Impossible to send a "Reject" because we can not get the Remote-Inbox.
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return;
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}
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// Only send minimal data.
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$activity_object = array_intersect_key(
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$activity_object,
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array_flip(
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array(
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'id',
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'type',
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'actor',
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'object',
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)
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)
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);
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$user = Users::get_by_id( $user_id );
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// Get inbox.
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$inbox = $follower->get_shared_inbox();
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// Send "Accept" activity.
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$activity = new Activity();
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$activity->set_type( 'Accept' );
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$activity->set_object( $activity_object );
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$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?://~', '', $actor ) . '-' . \time() );
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$activity = $activity->to_json();
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Http::post( $inbox, $activity, $user_id );
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}
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}
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