wordpress-activitypub/includes/class-activity-dispatcher.php

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<?php
namespace Activitypub;
/**
* ActivityPub Activity_Dispatcher Class
*
* @author Matthias Pfefferle
*
* @see https://www.w3.org/TR/activitypub/
*/
class Activity_Dispatcher {
/**
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* Initialize the class, registering WordPress hooks.
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*/
public static function init() {
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\add_action( 'activitypub_send_post_activity', array( '\Activitypub\Activity_Dispatcher', 'send_post_activity' ) );
\add_action( 'activitypub_send_update_activity', array( '\Activitypub\Activity_Dispatcher', 'send_update_activity' ) );
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\add_action( 'activitypub_send_delete_activity', array( '\Activitypub\Activity_Dispatcher', 'send_delete_activity' ) );
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\add_action( 'activitypub_send_comment_activity', array( '\Activitypub\Activity_Dispatcher', 'send_comment_activity' ) );
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\add_action( 'activitypub_send_update_comment_activity', array( '\Activitypub\Activity_Dispatcher', 'send_update_comment_activity' ) );
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\add_action( 'activitypub_inbox_forward_activity', array( '\Activitypub\Activity_Dispatcher', 'inbox_forward_activity' ) );
\add_action( 'activitypub_send_delete_comment_activity', array( '\Activitypub\Activity_Dispatcher', 'send_delete_comment_activity' ) );
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}
/**
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* Send "create" activities.
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*
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* @param \Activitypub\Model\Post $activitypub_post
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*/
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public static function send_post_activity( $activitypub_post ) {
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// get latest version of post
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$user_id = $activitypub_post->get_post_author();
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$activitypub_activity = new \Activitypub\Model\Activity( 'Create', \Activitypub\Model\Activity::TYPE_FULL );
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$activitypub_activity->from_post( $activitypub_post->to_array() );
foreach ( \Activitypub\get_follower_inboxes( $user_id ) as $inbox => $to ) {
$activitypub_activity->set_to( $to );
$activity = $activitypub_activity->to_json(); // phpcs:ignore
\Activitypub\safe_remote_post( $inbox, $activity, $user_id );
}
}
/**
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* Send "update" activities.
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*
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* @param \Activitypub\Model\Post $activitypub_post
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*/
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public static function send_update_activity( $activitypub_post ) {
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// save permalink for delete
$post_id = \url_to_postid( $activitypub_post->get_id() );
//shouldn't this go in schedule_*_activity? yeah
\update_post_meta( $post_id, '_ap_deleted_slug', $activitypub_post->get_id() );
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// get latest version of post
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$user_id = $activitypub_post->get_post_author();
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$updated = \wp_date( 'Y-m-d\TH:i:s\Z', \strtotime( $activitypub_post->get_updated() ) );
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$activitypub_activity = new \Activitypub\Model\Activity( 'Update', \Activitypub\Model\Activity::TYPE_FULL );
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$activitypub_activity->from_post( $activitypub_post->to_array() );
foreach ( \Activitypub\get_follower_inboxes( $user_id ) as $inbox => $to ) {
$activitypub_activity->set_to( $to );
$activity = $activitypub_activity->to_json(); // phpcs:ignore
\Activitypub\safe_remote_post( $inbox, $activity, $user_id );
}
}
/**
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* Send "delete" activities.
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*
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* @param \Activitypub\Model\Post $activitypub_post
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*/
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public static function send_delete_activity( $activitypub_post ) {
// get latest version of post
$user_id = $activitypub_post->get_post_author();
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$deleted = \current_time( 'Y-m-d\TH:i:s\Z', true );
$activitypub_post->set_deleted( $deleted );
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$activitypub_activity = new \Activitypub\Model\Activity( 'Delete', \Activitypub\Model\Activity::TYPE_FULL );
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$activitypub_activity->from_post( $activitypub_post->to_array() );
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$activitypub_activity->set_deleted( $deleted );
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foreach ( \Activitypub\get_follower_inboxes( $user_id ) as $inbox => $to ) {
$activitypub_activity->set_to( $to );
$activity = $activitypub_activity->to_json(); // phpcs:ignore
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\Activitypub\safe_remote_post( $inbox, $activity, $user_id );
}
}
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/**
* Send "create" activities for comments
*
* @param \Activitypub\Model\Comment $activitypub_comment
*/
public static function send_comment_activity( $activitypub_comment_id ) {
//ONLY FOR LOCAL USERS ?
$activitypub_comment = \get_comment( $activitypub_comment_id );
$user_id = $activitypub_comment->user_id;
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$replyto = get_comment_meta( $activitypub_comment->comment_parent, 'comment_author_url', true );// must include in replyto
$mentions = get_comment_meta( $activitypub_comment_id, 'mentions', true );//might be tagged
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$activitypub_comment = new \Activitypub\Model\Comment( $activitypub_comment );
$activitypub_activity = new \Activitypub\Model\Activity( 'Create', \Activitypub\Model\Activity::TYPE_FULL );
$activitypub_activity->from_comment( $activitypub_comment->to_array() );
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foreach ( \Activitypub\get_mentioned_inboxes( $mentions ) as $inbox => $to ) {
$activitypub_activity->set_to( $to );//all users at shared inbox
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$activity = $activitypub_activity->to_json(); // phpcs:ignore
\Activitypub\safe_remote_post( $inbox, $activity, $user_id );
}
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//will this reset the activities?
foreach ( \Activitypub\get_follower_inboxes( $user_id ) as $inbox => $cc ) {
$activitypub_activity->set_cc( $cc );//set_cc
$activity = $activitypub_activity->to_json(); // phpcs:ignore
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// Send reply to followers, skip if replying to followers (avoid duplicate replies)
if( in_array( $cc, $replyto ) || in_array( $cc, $mentions ) ) {
continue;
}
\Activitypub\safe_remote_post( $inbox, $activity, $user_id );
}
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}
/**
* Forward replies to followers
*
* @param \Activitypub\Model\Comment $activitypub_comment
*/
public static function inbox_forward_activity( $activitypub_comment_id ) {
$activitypub_comment = \get_comment( $activitypub_comment_id );
//original author should NOT recieve a copy of ther own post
$replyto[] = $activitypub_comment->comment_author_url;
$activitypub_activity = unserialize( get_comment_meta( $activitypub_comment->comment_ID, 'ap_object', true ) );
//will be forwarded to the parent_comment->author or post_author followers collection
//TODO verify that ... what?
$parent_comment = \get_comment( $activitypub_comment->comment_parent );
if ( !is_null( $parent_comment ) ) {
$user_id = $parent_comment->user_id;
} else {
$original_post = \get_post( $activitypub_comment->comment_post_ID );
$user_id = $original_post->post_author;
}
//remove user_id from $activitypub_comment
unset($activitypub_activity['user_id']);
foreach ( \Activitypub\get_follower_inboxes( $user_id ) as $inbox => $to ) {
//Forward reply to followers, skip sender
if( in_array( $to, $replyto ) || ( $replyto == $to ) ) {
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continue;
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}
$activitypub_activity['object']['to'] = $to;
$activitypub_activity['to'] = $to;
$activity = \wp_json_encode( $activitypub_activity, JSON_HEX_TAG | JSON_HEX_AMP | JSON_HEX_QUOT );
\Activitypub\forward_remote_post( $inbox, $activity, $user_id );
}
}
/**
* Send "delete" activities.
*
* @param \Activitypub\Model\Comment $activitypub_comment
*/
public static function send_delete_comment_activity( $activitypub_comment_id ) {
// get comment
$activitypub_comment = \get_comment( $activitypub_comment_id );
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$user_id = $activitypub_comment->user_id;
// Prevent sending received/anonymous comments
if ( ! $user_id ) {
return;
}
$deleted = \wp_date( 'Y-m-d\TH:i:s\Z', \strtotime( $activitypub_comment->comment_date_gmt ) );
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$activitypub_comment = new \Activitypub\Model\Comment( $activitypub_comment );
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$activitypub_comment->set_deleted( $deleted );
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$activitypub_activity = new \Activitypub\Model\Activity( 'Delete', \Activitypub\Model\Activity::TYPE_FULL );
$activitypub_activity->from_comment( $activitypub_comment->to_array() );
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$activitypub_activity->set_deleted( $deleted );
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foreach ( \Activitypub\get_follower_inboxes( $user_id ) as $inbox => $to ) {
$activitypub_activity->set_to( $to );
$activity = $activitypub_activity->to_json(); // phpcs:ignore
\Activitypub\safe_remote_post( $inbox, $activity, $user_id );
}
}
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}