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<?php
/**
* Comment functions.
*
* Functions for working with comments in ActivityPub context.
*
* @package Activitypub
*/
namespace Activitypub;
/**
* Get the ActivityPub ID of a Comment by the WordPress Comment ID.
*
* @param int|\WP_Comment $id The WordPress Comment ID or object.
*
* @return string The ActivityPub ID (a URL) of the Comment.
*/
function get_comment_id( $id ) {
return Comment::generate_id( $id );
}
/**
* Get the comment from an ActivityPub Object ID.
*
* @since 9.1.0 Added the `$args` parameter.
*
* @param string $id ActivityPub object ID (usually a URL) to check.
* @param array $args Optional. Additional WP_Comment_Query arguments.
*
* @return \WP_Comment|boolean Comment, or false on failure.
*/
function object_id_to_comment( $id, $args = array() ) {
return Comment::object_id_to_comment( $id, $args );
}
/**
* Verify that URL is a local comment or a previously received remote comment.
* (For threading comments locally)
*
* @param string $url The URL to check.
*
* @return string|null Comment ID or null if not found
*/
function url_to_commentid( $url ) {
return Comment::url_to_commentid( $url );
}
/**
* Check if a comment should be federated.
*
* We consider a comment should be federated if it is authored by a user that is
* not disabled for federation and if it is a reply directly to the post or to a
* federated comment.
*
* @param mixed $comment Comment object or ID.
*
* @return boolean True if the comment should be federated, false otherwise.
*/
function should_comment_be_federated( $comment ) {
return Comment::should_be_federated( $comment );
}
/**
* Check if a comment was federated.
*
* This function checks if a comment was federated via ActivityPub.
*
* @param mixed $comment Comment object or ID.
*
* @return boolean True if the comment was federated, false otherwise.
*/
function was_comment_sent( $comment ) {
return Comment::was_sent( $comment );
}
/**
* Check if a comment is federated.
*
* We consider a comment federated if comment was received via ActivityPub.
*
* Use this function to check if it is comment that was received via ActivityPub.
*
* @param mixed $comment Comment object or ID.
*
* @return boolean True if the comment is federated, false otherwise.
*/
function was_comment_received( $comment ) {
return Comment::was_received( $comment );
}
/**
* Check if a comment is local only.
*
* This function checks if a comment is local only and was not sent or received via ActivityPub.
*
* @param mixed $comment Comment object or ID.
*
* @return boolean True if the comment is local only, false otherwise.
*/
function is_local_comment( $comment ) {
return Comment::is_local( $comment );
}
/**
* Retrieves the IDs of the ancestors of a comment.
*
* Adaption of `get_post_ancestors` from WordPress core.
*
* @see https://developer.wordpress.org/reference/functions/get_post_ancestors/
*
* @param int|\WP_Comment $comment Comment ID or comment object.
*
* @return int[] Array of ancestor IDs.
*/
function get_comment_ancestors( $comment ) {
$comment = \get_comment( $comment );
if ( ! $comment || empty( $comment->comment_parent ) || (int) $comment->comment_parent === (int) $comment->comment_ID ) {
return array();
}
$ancestors = array();
$id = (int) $comment->comment_parent;
$ancestors[] = $id;
while ( $id > 0 ) {
$ancestor = \get_comment( $id );
if ( ! $ancestor ) {
break;
}
$parent_id = (int) $ancestor->comment_parent;
// Loop detection: If the ancestor has been seen before, break.
if ( empty( $parent_id ) || ( $parent_id === (int) $comment->comment_ID ) || \in_array( $parent_id, $ancestors, true ) ) {
break;
}
$id = $parent_id;
$ancestors[] = $id;
}
return $ancestors;
}
/**
* Registers a ActivityPub comment type.
*
* @param string $comment_type Key for comment type.
* @param array $args Optional. Array of arguments for registering a comment type. Default empty array.
*
* @return array The registered Activitypub comment type.
*/
function register_comment_type( $comment_type, $args = array() ) {
global $activitypub_comment_types;
if ( ! \is_array( $activitypub_comment_types ) ) {
$activitypub_comment_types = array();
}
// Sanitize comment type name.
$comment_type = \sanitize_key( $comment_type );
$activitypub_comment_types[ $comment_type ] = $args;
/**
* Fires after a ActivityPub comment type is registered.
*
* @param string $comment_type Comment type.
* @param array $args Arguments used to register the comment type.
*/
\do_action( 'activitypub_registered_comment_type', $comment_type, $args );
return $args;
}
/**
* Get the reply intent URI as a JavaScript URI.
*
* @return string The reply intent URI.
*/
function get_reply_intent_js() {
return \sprintf(
'javascript:(()=>{window.open(\'%s\'+encodeURIComponent(window.location.href));})();',
get_reply_intent_url()
);
}
/**
* Get the reply intent URI.
*
* @return string The reply intent URI.
*/
function get_reply_intent_url() {
/**
* Filters the reply intent parameters.
*
* @param array $params The reply intent parameters.
*/
$params = \apply_filters( 'activitypub_reply_intent_params', array() );
$params += array( 'in_reply_to' => '' );
$query = \http_build_query( $params );
$path = 'post-new.php?' . $query;
$url = \admin_url( $path );
/**
* Filters the reply intent URL.
*
* @param string $url The reply intent URL.
*/
$url = \apply_filters( 'activitypub_reply_intent_url', $url );
return \esc_url_raw( $url );
}