312 lines
7.6 KiB
PHP
312 lines
7.6 KiB
PHP
<?php
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namespace Activitypub\Transformer;
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use WP_Comment;
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use Activitypub\Collection\Users;
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use Activitypub\Model\Blog_User;
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use Activitypub\Activity\Base_Object;
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use Activitypub\Hashtag;
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use function Activitypub\esc_hashtag;
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use function Activitypub\is_single_user;
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use function Activitypub\get_rest_url_by_path;
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/**
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* WordPress Comment Transformer
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*
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* The Comment Transformer is responsible for transforming a WP_Comment object into different
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* Object-Types.
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*
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* Currently supported are:
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*
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* - Activitypub\Activity\Base_Object
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*/
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class Comment {
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/**
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* The WP_Comment object.
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*
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* @var WP_Comment
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*/
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protected $wp_comment;
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/**
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* Static function to Transform a WP_Comment Object.
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*
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* This helps to chain the output of the Transformer.
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*
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* @param WP_Comment $wp_comment The WP_Comment object
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*
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* @return void
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*/
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public static function transform( WP_Comment $wp_comment ) {
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return new static( $wp_comment );
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}
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/**
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*
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*
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* @param WP_Comment $wp_comment
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*/
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public function __construct( WP_Comment $wp_comment ) {
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$this->wp_comment = $wp_comment;
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}
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/**
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* Transforms the WP_Comment object to an ActivityPub Object
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*
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* @see \Activitypub\Activity\Base_Object
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*
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* @return \Activitypub\Activity\Base_Object The ActivityPub Object
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*/
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public function to_object() {
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$comment = $this->wp_comment;
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$object = new Base_Object();
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$object->set_id( $this->get_id() );
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$object->set_url( \get_comment_link( $comment->ID ) );
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$object->set_context( \get_permalink( $comment->comment_post_ID ) );
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$object->set_type( 'Note' );
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$published = \strtotime( $comment->comment_date_gmt );
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$object->set_published( \gmdate( 'Y-m-d\TH:i:s\Z', $published ) );
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$updated = \get_comment_meta( $comment->comment_ID, 'ap_last_modified', true );
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if ( $updated > $published ) {
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$object->set_updated( \gmdate( 'Y-m-d\TH:i:s\Z', \strtotime( $updated ) ) );
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}
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$object->set_attributed_to( $this->get_attributed_to() );
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$object->set_in_reply_to( $this->get_in_reply_to() );
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$object->set_content( $this->get_content() );
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$object->set_content_map(
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array(
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\strstr( \get_locale(), '_', true ) => $this->get_content(),
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)
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);
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$path = sprintf( 'users/%d/followers', intval( $comment->comment_author ) );
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$object->set_to(
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array(
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'https://www.w3.org/ns/activitystreams#Public',
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get_rest_url_by_path( $path ),
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)
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);
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$object->set_cc( $this->get_cc() );
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$object->set_tag( $this->get_tags() );
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return $object;
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}
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/**
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* Returns the User-URL of the Author of the Post.
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*
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* If `single_user` mode is enabled, the URL of the Blog-User is returned.
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*
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* @return string The User-URL.
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*/
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protected function get_attributed_to() {
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if ( is_single_user() ) {
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$user = new Blog_User();
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return $user->get_url();
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}
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return Users::get_by_id( $this->wp_comment->user_id )->get_url();
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}
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/**
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* Returns a list of Mentions, used in the Comment.
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*
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* @see https://docs.joinmastodon.org/spec/activitypub/#Mention
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*
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* @return array The list of Mentions.
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*/
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protected function get_cc() {
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$cc = array();
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$mentions = $this->get_mentions();
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if ( $mentions ) {
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foreach ( $mentions as $mention => $url ) {
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$cc[] = $url;
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}
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}
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return $cc;
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}
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/**
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* Returns a list of Tags, used in the Comment.
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*
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* This includes Hash-Tags and Mentions.
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*
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* @return array The list of Tags.
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*/
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protected function get_tags() {
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// TODO Delete Or Modify
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$tags = array();
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$comment_tags = self::get_hashtags();
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if ( $comment_tags ) {
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foreach ( $comment_tags as $comment_tag ) {
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$tag_link = \get_tag_link( $comment_tag );
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if ( ! $tag_link ) {
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continue;
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}
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$tag = array(
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'type' => 'Hashtag',
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'href' => \esc_url( $tag_link ),
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'name' => esc_hashtag( $comment_tag ),
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);
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$tags[] = $tag;
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}
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}
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$mentions = $this->get_mentions();
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if ( $mentions ) {
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foreach ( $mentions as $mention => $url ) {
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$tag = array(
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'type' => 'Mention',
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'href' => \esc_url( $url ),
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'name' => \esc_html( $mention ),
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);
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$tags[] = $tag;
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}
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}
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return $tags;
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}
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/**
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* Returns the content for the ActivityPub Item.
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*
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* The content will be generated based on the user settings.
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*
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* @return string The content.
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*/
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protected function get_content() {
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// phpcs:ignore WordPress.WP.GlobalVariablesOverride.Prohibited
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$comment = $this->wp_comment;
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$content = $comment->comment_content;
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$content = \wpautop( $content );
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$content = \preg_replace( '/[\n\r\t]/', '', $content );
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$content = \trim( $content );
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$content = \apply_filters( 'the_content', $content, $comment );
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$content = \html_entity_decode( $content, \ENT_QUOTES, 'UTF-8' );
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return $content;
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}
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/**
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* Helper function to get the @-Mentions from the comment content.
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*
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* @return array The list of @-Mentions.
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*/
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protected function get_mentions() {
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return apply_filters( 'activitypub_extract_mentions', array(), $this->wp_comment->comment_content, $this->wp_comment );
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}
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/**
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* Helper function to get the #HashTags from the comment content.
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*
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* @return array The list of @-Mentions.
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*/
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protected function get_hashtags() {
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$content = $this->get_content();
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$tags = [];
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//TODO fix hashtag
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if ( \preg_match_all( '/' . ACTIVITYPUB_HASHTAGS_REGEXP . '/i', $content, $match ) ) {
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$tags = \implode( ', ', $match[1] );
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}
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$hashtags = [];
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preg_match_all( "/(#\w+)/u", $content, $matches );
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if ( $matches ) {
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$hashtags = array_count_values( $matches[0] );
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$hashtags = array_keys( $hashtags );
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}
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return $hashtags;
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}
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/**
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* get_parent_uri (in reply to)
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* takes a comment and returns
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* @param WP_Comment activitypub object id URI
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* @return int comment_id
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*/
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protected function get_in_reply_to() {
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$comment = $this->wp_comment;
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$parent_comment = \get_comment( $comment->comment_parent );
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if ( $parent_comment ) {
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//is parent remote?
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$in_reply_to = $this->get_source_id( $parent_comment );
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if ( ! $in_reply_to ) {
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//local
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$in_reply_to = $this->get_id( $comment );
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}
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} else {
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$pretty_permalink = \get_post_meta( $comment->comment_post_ID, 'activitypub_canonical_url', true );
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if ( $pretty_permalink ) {
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$in_reply_to = $pretty_permalink;
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} else {
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$in_reply_to = \get_permalink( $comment->comment_post_ID );
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}
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}
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return $in_reply_to;
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}
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/**
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* @param $comment or $comment_id
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* @return ActivityPub URI of comment
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*
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* AP Object ID must be unique
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*
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* https://www.w3.org/TR/activitypub/#obj-id
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* https://github.com/tootsuite/mastodon/issues/13879
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*/
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protected function get_id() {
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$comment = $this->wp_comment;
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$comment = \get_comment( $comment );
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$ap_comment_id = \add_query_arg(
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array(
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'p' => $comment->comment_post_ID,
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'replytocom' => $comment->comment_ID,
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),
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\trailingslashit( site_url() )
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);
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return $ap_comment_id;
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}
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/**
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* Checks a comment ID for a source_id, or source_url
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*/
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protected function get_source_id( $comment ) {
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if ( $comment->user_id !== 0 ) {
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$source_id = \get_comment_meta( $comment->ID, 'source_id', true );
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if ( ! $source_id ) {
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$source_url = \get_comment_meta( $comment->ID, 'source_url', true );
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if ( ! $source_url ) {
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return null;
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}
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$response = safe_remote_get( $source_url );
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$body = \wp_remote_retrieve_body( $response );
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$remote_status = \json_decode( $body, true );
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if ( is_wp_error( $remote_status )
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|| ! isset( $remote_status['@context'] )
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|| ! isset( $remote_status['object']['id'] ) ) {
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// the original post may have been deleted, before we started processing deletes.
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return null;
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}
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$source_id = $remote_status['object']['id'];
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}
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return $source_id;
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}
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return null;
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}
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}
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