laipower/wp-content/plugins/activitypub/includes/class-mention.php

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<?php
/**
* Mention class file.
*
* @package Activitypub
*/
namespace Activitypub;
use WP_Error;
/**
* ActivityPub Mention Class.
*
* @author Alex Kirk
*/
class Mention {
/**
* Initialize the class, registering WordPress hooks.
*/
public static function init() {
\add_filter( 'the_content', array( self::class, 'the_content' ), 99, 1 );
\add_filter( 'comment_text', array( self::class, 'the_content' ), 10, 1 );
\add_filter( 'activitypub_extra_field_content', array( self::class, 'the_content' ), 10, 1 );
\add_filter( 'activitypub_extract_mentions', array( self::class, 'extract_mentions' ), 99, 2 );
\add_filter( 'activitypub_activity_object_array', array( self::class, 'filter_activity_object' ), 99 );
}
/**
* Filter only the activity object and replace summery it with URLs
* add tag to user.
*
* @param array $object_array Array of activity.
*
* @return array The activity object array.
*/
public static function filter_activity_object( $object_array ) {
if ( ! empty( $object_array['summary'] ) ) {
$object_array['summary'] = self::the_content( $object_array['summary'] );
}
if ( ! empty( $object_array['content'] ) ) {
$object_array['content'] = self::the_content( $object_array['content'] );
}
return $object_array;
}
/**
* Filter to replace the mentions in the content with links.
*
* @param string $the_content The post content.
*
* @return string The filtered post-content.
*/
public static function the_content( $the_content ) {
return enrich_content_data( $the_content, '/@' . ACTIVITYPUB_USERNAME_REGEXP . '/', array( self::class, 'replace_with_links' ) );
}
/**
* A callback for preg_replace to build the user links.
*
* @param array $result The preg_match results.
*
* @return string The final string.
*/
public static function replace_with_links( $result ) {
$metadata = get_remote_metadata_by_actor( $result[0] );
if (
! empty( $metadata ) &&
! is_wp_error( $metadata ) &&
( ! empty( $metadata['id'] ) || ! empty( $metadata['url'] ) )
) {
$username = ltrim( $result[0], '@' );
if ( ! empty( $metadata['name'] ) ) {
$username = $metadata['name'];
}
if ( ! empty( $metadata['preferredUsername'] ) ) {
$username = $metadata['preferredUsername'];
}
$url = isset( $metadata['url'] ) ? object_to_uri( $metadata['url'] ) : object_to_uri( $metadata['id'] );
return \sprintf( '<a rel="mention" class="u-url mention" href="%s">@<span>%s</span></a>', esc_url( $url ), esc_html( $username ) );
}
return $result[0];
}
/**
* Get the Inboxes for the mentioned Actors.
*
* @param array $mentioned The list of Actors that were mentioned.
*
* @return array The list of Inboxes.
*/
public static function get_inboxes( $mentioned ) {
$inboxes = array();
foreach ( $mentioned as $actor ) {
$inbox = self::get_inbox_by_mentioned_actor( $actor );
if ( ! is_wp_error( $inbox ) && $inbox ) {
$inboxes[] = $inbox;
}
}
return $inboxes;
}
/**
* Get the inbox from the Remote-Profile of a mentioned Actor.
*
* @param string $actor The Actor URL.
*
* @return string|WP_Error The Inbox-URL or WP_Error if not found.
*/
public static function get_inbox_by_mentioned_actor( $actor ) {
$metadata = get_remote_metadata_by_actor( $actor );
if ( \is_wp_error( $metadata ) ) {
return $metadata;
}
if ( isset( $metadata['endpoints']['sharedInbox'] ) ) {
return $metadata['endpoints']['sharedInbox'];
}
if ( \array_key_exists( 'inbox', $metadata ) ) {
return $metadata['inbox'];
}
return new WP_Error( 'activitypub_no_inbox', \__( 'No "Inbox" found', 'activitypub' ), $metadata );
}
/**
* Extract the mentions from the post_content.
*
* @param array $mentions The already found mentions.
* @param string $post_content The post content.
*
* @return array The discovered mentions.
*/
public static function extract_mentions( $mentions, $post_content ) {
\preg_match_all( '/@' . ACTIVITYPUB_USERNAME_REGEXP . '/i', $post_content, $matches );
foreach ( $matches[0] as $match ) {
$link = Webfinger::resolve( $match );
if ( ! is_wp_error( $link ) ) {
$mentions[ $match ] = $link;
}
}
return \array_unique( $mentions );
}
}