72 lines
2.1 KiB
PHP
72 lines
2.1 KiB
PHP
<?php
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namespace Activitypub;
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/**
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* ActivityPub Mention Class
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*
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* @author Alex Kirk
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*/
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class Mention {
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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_filter( 'the_content', array( '\Activitypub\Mention', 'the_content' ), 99, 2 );
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\add_filter( 'activitypub_extract_mentions', array( '\Activitypub\Mention', 'extract_mentions' ), 99, 2 );
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}
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/**
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* Filter to replace the mentions in the content with links
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*
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* @param string $the_content the post-content
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*
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* @return string the filtered post-content
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*/
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public static function the_content( $the_content ) {
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$the_content = \preg_replace_callback( '/@' . ACTIVITYPUB_USERNAME_REGEXP . '/', array( '\Activitypub\Mention', 'replace_with_links' ), $the_content );
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return $the_content;
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}
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/**
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* A callback for preg_replace to build the user links
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*
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* @param array $result the preg_match results
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* @return string the final string
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*/
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public static function replace_with_links( $result ) {
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$metadata = \ActivityPub\get_remote_metadata_by_actor( $result[0] );
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if ( ! is_wp_error( $metadata ) && ! empty( $metadata['url'] ) ) {
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$username = ltrim( $result[0], '@' );
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if ( ! empty( $metadata['name'] ) ) {
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$username = $metadata['name'];
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}
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if ( ! empty( $metadata['preferredUsername'] ) ) {
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$username = $metadata['preferredUsername'];
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}
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$username = '@<span>' . $username . '</span>';
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return \sprintf( '<a rel="mention" class="u-url mention" href="%s">%s</a>', $metadata['url'], $username );
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}
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return $result[0];
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}
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/**
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* Extract the mentions from the post_content.
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*
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* @param array $mentions The already found mentions.
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* @param string $post_content The post content.
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* @return mixed The discovered mentions.
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*/
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public static function extract_mentions( $mentions, $post_content ) {
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\preg_match_all( '/@' . ACTIVITYPUB_USERNAME_REGEXP . '/i', $post_content, $matches );
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foreach ( $matches[0] as $match ) {
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$link = \Activitypub\Webfinger::resolve( $match );
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if ( ! is_wp_error( $link ) ) {
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$mentions[ $match ] = $link;
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}
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}
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return $mentions;
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}
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}
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