Event-Federation/wordpress-activitypub
Event-Federation/wordpress-activitypub
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refactor support for threaded comments from ActivityPub

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This commit is contained in:
Matthew Exon 2023-01-03 21:42:43 +01:00
parent f1f3c3165d
commit 6a906e5fe2
2 changed files with 84 additions and 39 deletions
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37
includes/functions.php
View file

@ -311,3 +311,40 @@ function url_to_authorid( $url ) {
return 0;
}
/**
* Examine a comment ID and look up an existing comment it represents.
*
* @param string $id ActivityPub object ID (usually a URL) to check.
*
* @return WP_Comment, or undef if no comment could be found.
*/
function object_id_to_comment( $id ) {
$comment_query = new \WP_Comment_Query( array( 'meta_key' => 'source_id', 'meta_value' => $id ) );
if ( !$comment_query->comments ) {
return;
}
if ( count( $comment_query->comments ) > 1 ){
\error_log( "More than one comment under {$id}" );
return;
}
return $comment_query->comments[0];
}
/**
* Examine an activity object and find the post that the specified URL field refers to.
*
* @param string $field_name The name of the URL field in the object to query.
*
* @return int Post ID, or null on failure.
*/
function object_to_post_id_by_field_name( $object, $field_name ) {
if ( ! isset( $object['object'][$field_name] ) ) {
return;
}
$result = \url_to_postid( $object['object'][$field_name] );
\error_log( "@@@ found result for " . $field_name . ": " . $result );
if ( $result > 0 ) {
return $result;
}
}

86
includes/rest/class-inbox.php
View file

@ -425,12 +425,13 @@ class Inbox {
}
/**
* Handles "Create" requests
* Converts a new ActivityPub object to comment data suitable for creating a comment
*
* @param array $object The activity-object
* @param int $user_id The id of the local blog-user
* @param array $object The activity-object.
*
* @return array Comment data suitable for creating a comment.
*/
public static function handle_create( $object, $user_id ) {
private static function convert_object_to_comment_data( $object ) {
// check if Activity is public or not
if ( ! self::is_activity_public( $object ) ) {
// @todo maybe send email
@ -439,55 +440,62 @@ class Inbox {
$meta = \Activitypub\get_remote_metadata_by_actor( $object['actor'] );
$comment_post_id = 0;
// TODO: search for an existing comment with the source url and abandon if it's already there
// Objects must have IDs
if ( ! isset( $object['object']['id'] ) ) {
\error_log( "Comment provided without ID" );
return;
}
$id = $object['object']['id'];
if ( isset( $object['object']['context'] ) ) {
$comment_post_id = \url_to_postid( $object['object']['context'] );
// Only handle replies
if ( ! isset( $object['object']['inReplyTo'] ) ) {
return;
}
$in_reply_to = $object['object']['inReplyTo'];
// Comment already exists
if ( \Activitypub\object_id_to_comment( $id ) ) {
return;
}
if ( ! $comment_post_id && isset( $object['object']['inReplyTo'] ) ) {
$comment_post_id = \url_to_postid( $object['object']['inReplyTo'] );
}
$parent_comment = \Activitypub\object_id_to_comment( $in_reply_to );
$comment_parent_id = 0;
$comment_meta = array(
'source_id' => \esc_url_raw( $object['object']['id'] ),
'source_url' => \esc_url_raw( $object['object']['url'] ),
'avatar_url' => \esc_url_raw( $meta['icon']['url'] ),
'protocol' => 'activitypub',
);
if ( isset( $object['object']['inReplyTo'] ) ) {
$comment_meta['parent_url'] = $object['object']['inReplyTo'];
$comment_query = new \WP_Comment_Query( array( 'meta_key' => 'source_id', 'meta_value' => $object['object']['inReplyTo'] ) );
if ( $comment_query->comments ) {
foreach ( $comment_query->comments as $comment ) {
if ( ! $comment_parent_id ) {
$comment_parent_id = $comment->comment_ID;
}
// save only replies and reactions
$comment_post_id = \Activitypub\object_to_post_id_by_field_name( $object, 'context' ) ??
\Activitypub\object_to_post_id_by_field_name( $object, 'inReplyTo' ) ??
( $parent_comment ? $parent_comment->comment_post_ID : 0 );
if ( ! $comment_post_id ) {
$comment_post_id = $comment->comment_post_ID;
}
}
}
return;
}
// save only replys and reactions
if ( ! $comment_post_id ) {
return false;
}
$commentdata = array(
return array(
'comment_post_ID' => $comment_post_id,
'comment_author' => \esc_attr( $meta['name'] ),
'comment_author_url' => \esc_url_raw( $object['actor'] ),
'comment_content' => \wp_filter_kses( $object['object']['content'] ),
'comment_type' => '',
'comment_author_email' => '',
'comment_parent' => $comment_parent_id,
'comment_meta' => $comment_meta,
'comment_parent' => $parent_comment ? $parent_comment->comment_ID : 0,
'comment_meta' => array(
'source_id' => \esc_url_raw( $id ),
'source_url' => \esc_url_raw( $object['object']['url'] ),
'avatar_url' => \esc_url_raw( $meta['icon']['url'] ),
'protocol' => 'activitypub',
),
);
}
/**
* Handles "Create" requests
*
* @param array $object The activity-object
* @param int $user_id The id of the local blog-user
*/
public static function handle_create( $object, $user_id ) {
$commentdata = self::convert_object_to_comment_data( $object );
if ( !$commentdata ) {
return false;
}
// disable flood control
\remove_action( 'check_comment_flood', 'check_comment_flood_db', 10 );