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class-outbox.php
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class-outbox.php
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<?php
namespace Activitypub\Rest;
use stdClass;
use WP_Error;
use WP_REST_Server;
use WP_REST_Response;
use Activitypub\Activity\Activity;
use Activitypub\Collection\Users as User_Collection;
use Activitypub\Transformer\Factory;
use function Activitypub\get_context;
use function Activitypub\get_rest_url_by_path;
use function Activitypub\get_masked_wp_version;
/**
* ActivityPub Outbox REST-Class
*
* @author Matthias Pfefferle
*
* @see https://www.w3.org/TR/activitypub/#outbox
*/
class Outbox {
/**
* Initialize the class, registering WordPress hooks
*/
public static function init() {
self::register_routes();
}
/**
* Register routes
*/
public static function register_routes() {
\register_rest_route(
ACTIVITYPUB_REST_NAMESPACE,
'/(users|actors)/(?P<user_id>[\w\-\.]+)/outbox',
array(
array(
'methods' => WP_REST_Server::READABLE,
'callback' => array( self::class, 'user_outbox_get' ),
'args' => self::request_parameters(),
'permission_callback' => '__return_true',
),
)
);
}
/**
* Renders the user-outbox
*
* @param WP_REST_Request $request
* @return WP_REST_Response
*/
public static function user_outbox_get( $request ) {
$user_id = $request->get_param( 'user_id' );
$user = User_Collection::get_by_various( $user_id );
if ( is_wp_error( $user ) ) {
return $user;
}
$post_types = \get_option( 'activitypub_support_post_types', array( 'post' ) );
$page = $request->get_param( 'page', 1 );
/*
* Action triggerd prior to the ActivityPub profile being created and sent to the client
*/
\do_action( 'activitypub_rest_outbox_pre' );
$json = new stdClass();
$json->{'@context'} = get_context();
$json->id = get_rest_url_by_path( sprintf( 'actors/%d/outbox', $user_id ) );
$json->generator = 'http://wordpress.org/?v=' . get_masked_wp_version();
$json->actor = $user->get_id();
$json->type = 'OrderedCollectionPage';
$json->partOf = get_rest_url_by_path( sprintf( 'actors/%d/outbox', $user_id ) ); // phpcs:ignore
$json->totalItems = 0; // phpcs:ignore
if ( $user_id > 0 ) {
$count_posts = \count_user_posts( $user_id, $post_types, true );
$json->totalItems = \intval( $count_posts ); // phpcs:ignore
} else {
foreach ( $post_types as $post_type ) {
$count_posts = \wp_count_posts( $post_type );
$json->totalItems += \intval( $count_posts->publish ); // phpcs:ignore
}
}
$json->first = \add_query_arg( 'page', 1, $json->partOf ); // phpcs:ignore
$json->last = \add_query_arg( 'page', \ceil ( $json->totalItems / 10 ), $json->partOf ); // phpcs:ignore
if ( $page && ( ( \ceil ( $json->totalItems / 10 ) ) > $page ) ) { // phpcs:ignore
$json->next = \add_query_arg( 'page', $page + 1, $json->partOf ); // phpcs:ignore
}
if ( $page && ( $page > 1 ) ) { // phpcs:ignore
$json->prev = \add_query_arg( 'page', $page - 1, $json->partOf ); // phpcs:ignore
}
if ( $page ) {
$posts = \get_posts(
array(
'posts_per_page' => 10,
'author' => $user_id > 0 ? $user_id : null,
'paged' => $page,
'post_type' => $post_types,
)
);
foreach ( $posts as $post ) {
$transformer = Factory::get_transformer( $post );
if ( \is_wp_error( $transformer ) ) {
continue;
}
$post = $transformer->to_object();
$activity = new Activity();
$activity->set_type( 'Create' );
$activity->set_object( $post );
$json->orderedItems[] = $activity->to_array( false ); // phpcs:ignore
}
}
// filter output
$json = \apply_filters( 'activitypub_rest_outbox_array', $json );
/*
* Action triggerd after the ActivityPub profile has been created and sent to the client
*/
\do_action( 'activitypub_outbox_post' );
$rest_response = new WP_REST_Response( $json, 200 );
$rest_response->header( 'Content-Type', 'application/activity+json; charset=' . get_option( 'blog_charset' ) );
return $rest_response;
}
/**
* The supported parameters
*
* @return array list of parameters
*/
public static function request_parameters() {
$params = array();
$params['page'] = array(
'type' => 'integer',
'default' => 1,
);
$params['user_id'] = array(
'required' => true,
'type' => 'string',
);
return $params;
}
}