284 lines
7.1 KiB
PHP
284 lines
7.1 KiB
PHP
<?php
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namespace Activitypub\Transformer;
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use WP_Comment;
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use WP_Comment_Query;
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use Activitypub\Webfinger;
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use Activitypub\Comment as Comment_Utils;
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use Activitypub\Model\Blog_User;
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use Activitypub\Collection\Users;
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use Activitypub\Transformer\Base;
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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 extends Base {
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/**
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* Returns the User-ID of the WordPress Comment.
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*
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* @return int The User-ID of the WordPress Comment
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*/
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public function get_wp_user_id() {
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return $this->wp_object->user_id;
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}
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/**
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* Change the User-ID of the WordPress Comment.
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*
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* @return int The User-ID of the WordPress Comment
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*/
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public function change_wp_user_id( $user_id ) {
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$this->wp_object->user_id = $user_id;
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}
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/**
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* Transforms the WP_Comment object to an ActivityPub Object
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*
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* @see \Activitypub\Activity\Base_Object
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*
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* @return \Activitypub\Activity\Base_Object The ActivityPub Object
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*/
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public function to_object() {
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$comment = $this->wp_object;
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$object = parent::to_object();
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$object->set_url( $this->get_id() );
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$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, 'activitypub_comment_modified', true );
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if ( $updated > $published ) {
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$object->set_updated( \gmdate( 'Y-m-d\TH:i:s\Z', $updated ) );
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}
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$object->set_content_map(
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array(
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$this->get_locale() => $this->get_content(),
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)
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);
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$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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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( $this->wp_object->user_id )->get_url();
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}
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/**
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* Returns the content for the ActivityPub Item.
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*
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* The content will be generated based on the user settings.
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*
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* @return string The content.
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*/
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protected function get_content() {
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// phpcs:ignore WordPress.WP.GlobalVariablesOverride.Prohibited
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$comment = $this->wp_object;
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$content = $comment->comment_content;
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$content = \apply_filters( 'comment_text', $content, $comment, array() );
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$content = \preg_replace( '/[\n\r\t]/', '', $content );
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$content = \trim( $content );
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$content = \apply_filters( 'activitypub_the_content', $content, $comment );
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return $content;
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}
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/**
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* Returns the in-reply-to for the ActivityPub Item.
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*
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* @return int The URL of the in-reply-to.
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*/
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protected function get_in_reply_to() {
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$comment = $this->wp_object;
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$parent_comment = null;
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$in_reply_to = null;
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if ( $comment->comment_parent ) {
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$parent_comment = \get_comment( $comment->comment_parent );
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}
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if ( $parent_comment ) {
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$comment_meta = \get_comment_meta( $parent_comment->comment_ID );
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if ( ! empty( $comment_meta['source_id'][0] ) ) {
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$in_reply_to = $comment_meta['source_id'][0];
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} elseif ( ! empty( $comment_meta['source_url'][0] ) ) {
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$in_reply_to = $comment_meta['source_url'][0];
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} elseif ( ! empty( $parent_comment->user_id ) ) {
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$in_reply_to = Comment_Utils::generate_id( $parent_comment );
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}
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} else {
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$in_reply_to = \get_permalink( $comment->comment_post_ID );
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}
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return $in_reply_to;
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}
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/**
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* Returns the ID of the ActivityPub Object.
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*
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* @see https://www.w3.org/TR/activitypub/#obj-id
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* @see https://github.com/tootsuite/mastodon/issues/13879
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*
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* @return string ActivityPub URI for comment
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*/
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protected function get_id() {
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$comment = $this->wp_object;
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return Comment_Utils::generate_id( $comment );
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}
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/**
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* Returns a list of Mentions, used in the Comment.
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*
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* @see https://docs.joinmastodon.org/spec/activitypub/#Mention
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*
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* @return array The list of Mentions.
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*/
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protected function get_cc() {
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$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 array_unique( $cc );
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}
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/**
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* Returns a list of Tags, used in the Comment.
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*
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* This includes Hash-Tags and Mentions.
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*
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* @return array The list of Tags.
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*/
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protected function get_tag() {
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$tags = array();
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$mentions = $this->get_mentions();
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if ( $mentions ) {
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foreach ( $mentions as $mention => $url ) {
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$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 \array_unique( $tags, SORT_REGULAR );
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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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\add_filter( 'activitypub_extract_mentions', array( $this, 'extract_reply_context' ) );
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return apply_filters( 'activitypub_extract_mentions', array(), $this->wp_object->comment_content, $this->wp_object );
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}
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/**
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* Collect all other Users that participated in this comment-thread
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* to send them a notification about the new reply.
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*
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* @param array $mentions The already mentioned ActivityPub users
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*
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* @return array The list of all Repliers.
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*/
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public function extract_reply_context( $mentions ) {
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// Check if `$this->wp_object` is a WP_Comment
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if ( 'WP_Comment' !== get_class( $this->wp_object ) ) {
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return $mentions;
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}
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$comment_query = new WP_Comment_Query(
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array(
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'post_id' => $this->wp_object->comment_post_ID,
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// phpcs:ignore WordPress.DB.SlowDBQuery.slow_db_query_meta_query
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'meta_query' => array(
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array(
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'key' => 'protocol',
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'value' => 'activitypub',
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),
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),
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)
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);
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if ( $comment_query->comments ) {
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foreach ( $comment_query->comments as $comment ) {
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if ( ! empty( $comment->comment_author_url ) ) {
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$acct = Webfinger::uri_to_acct( $comment->comment_author_url );
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if ( $acct && ! is_wp_error( $acct ) ) {
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$acct = str_replace( 'acct:', '@', $acct );
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$mentions[ $acct ] = $comment->comment_author_url;
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}
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}
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}
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}
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return $mentions;
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}
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/**
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* Returns the locale of the post.
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*
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* @return string The locale of the post.
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*/
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public function get_locale() {
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$comment_id = $this->wp_object->ID;
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$lang = \strtolower( \strtok( \get_locale(), '_-' ) );
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/**
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* Filter the locale of the comment.
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*
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* @param string $lang The locale of the comment.
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* @param int $comment_id The comment ID.
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* @param WP_Post $post The comment object.
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*
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* @return string The filtered locale of the comment.
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*/
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return apply_filters( 'activitypub_comment_locale', $lang, $comment_id, $this->wp_object );
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}
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}
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