127 lines
3.3 KiB
PHP
127 lines
3.3 KiB
PHP
<?php
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namespace Activitypub;
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use WP_Post;
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use WP_Comment;
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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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use Activitypub\Transformer\Factory;
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use Activitypub\Transformer\Post;
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use Activitypub\Transformer\Comment;
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use function Activitypub\is_single_user;
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use function Activitypub\is_user_disabled;
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use function Activitypub\safe_remote_post;
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/**
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* ActivityPub Activity_Dispatcher Class
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*
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* @author Matthias Pfefferle
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*
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* @see https://www.w3.org/TR/activitypub/
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*/
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class Activity_Dispatcher {
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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( 'activitypub_send_activity', array( self::class, 'send_activity' ), 10, 2 );
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\add_action( 'activitypub_send_activity', array( self::class, 'send_activity_or_announce' ), 10, 2 );
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}
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/**
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* Send Activities to followers and mentioned users or `Announce` (boost) a blog post.
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*
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* @param mixed $wp_object The ActivityPub Post.
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* @param string $type The Activity-Type.
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*
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* @return void
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*/
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public static function send_activity_or_announce( $wp_object, $type ) {
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// check if a migration is needed before sending new posts
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Migration::maybe_migrate();
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if ( is_user_type_disabled( 'blog' ) ) {
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return;
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}
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if ( is_single_user() ) {
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self::send_activity( $wp_object, $type, Users::BLOG_USER_ID );
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} else {
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self::send_announce( $wp_object, $type );
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}
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}
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/**
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* Send Activities to followers and mentioned users.
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*
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* @param mixed $wp_object The ActivityPub Post.
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* @param string $type The Activity-Type.
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*
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* @return void
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*/
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public static function send_activity( $wp_object, $type, $user_id = null ) {
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$transformer = Factory::get_transformer( $wp_object );
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if ( null !== $user_id ) {
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$transformer->change_wp_user_id( $user_id );
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}
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$user_id = $transformer->get_wp_user_id();
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if ( is_user_disabled( $user_id ) ) {
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return;
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}
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$activity = $transformer->to_activity( $type );
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$follower_inboxes = Followers::get_inboxes( $user_id );
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$mentioned_inboxes = Mention::get_inboxes( $activity->get_cc() );
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$inboxes = array_merge( $follower_inboxes, $mentioned_inboxes );
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$inboxes = array_unique( $inboxes );
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$json = $activity->to_json();
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foreach ( $inboxes as $inbox ) {
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safe_remote_post( $inbox, $json, $user_id );
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}
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}
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/**
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* Send Announces to followers and mentioned users.
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*
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* @param mixed $wp_object The ActivityPub Post.
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* @param string $type The Activity-Type.
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*
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* @return void
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*/
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public static function send_announce( $wp_object, $type ) {
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if ( ! in_array( $type, array( 'Create', 'Update' ), true ) ) {
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return;
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}
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if ( is_user_disabled( Users::BLOG_USER_ID ) ) {
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return;
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}
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$transformer = Factory::get_transformer( $wp_object );
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$transformer->change_wp_user_id( Users::BLOG_USER_ID );
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$user_id = $transformer->get_wp_user_id();
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$activity = $transformer->to_activity( 'Announce' );
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$follower_inboxes = Followers::get_inboxes( $user_id );
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$mentioned_inboxes = Mention::get_inboxes( $activity->get_cc() );
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$inboxes = array_merge( $follower_inboxes, $mentioned_inboxes );
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$inboxes = array_unique( $inboxes );
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$json = $activity->to_json();
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foreach ( $inboxes as $inbox ) {
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safe_remote_post( $inbox, $json, $user_id );
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}
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}
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}
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