wordpress-activitypub/includes/class-mention.php

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2022-12-09 11:59:24 +01:00
<?php
namespace Activitypub;
/**
* ActivityPub Mention Class
*
* @author Alex Kirk
*/
class Mention {
/**
* Initialize the class, registering WordPress hooks
*/
public static function init() {
\add_filter( 'the_content', array( '\Activitypub\Mention', 'the_content' ), 99, 2 );
\add_filter( 'activitypub_extract_mentions', array( '\Activitypub\Mention', 'extract_mentions' ), 99, 2 );
}
/**
* Filter to replace the #tags 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 ) {
$the_content = \preg_replace_callback( '/@' . ACTIVITYPUB_USERNAME_REGEXP . '/i', array( '\Activitypub\Mention', 'replace_with_links' ), $the_content );
return $the_content;
}
/**
* A callback for preg_replace to build the term links
*
* @param array $result the preg_match results
* @return string the final string
*/
public static function replace_with_links( $result ) {
$metadata = \ActivityPub\get_remote_metadata_by_actor( $result[0] );
if ( ! is_wp_error( $metadata ) ) {
$username = $metadata['name'];
if ( ! empty( $metadata['preferredUsername'] ) ) {
$username = $metadata['preferredUsername'];
}
$username = '@<span>' . $username . '</span>';
return \sprintf( '<a rel="mention" class="u-url mention href="%s">%s</a>', $metadata['url'], $username );
}
return $username;
}
public static function extract_mentions( $mentions, \ActivityPub\Model\Post $post ) {
\preg_match_all( '/@' . ACTIVITYPUB_USERNAME_REGEXP . '/i', $post->get_content(), $matches );
foreach ( $matches[0] as $match ) {
$link = \Activitypub\Rest\Webfinger::resolve( $match );
if ( ! is_wp_error( $link ) ) {
$mentions[ $match ] = $link;
}
}
return $mentions;
}
}