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<?php
/**
* Following_Controller file.
*
* @package Activitypub
*/
namespace Activitypub\Rest;
use Activitypub\Activity\Base_Object;
use Activitypub\Collection\Following;
use Activitypub\Collection\Remote_Actors;
use function Activitypub\get_masked_wp_version;
use function Activitypub\get_rest_url_by_path;
/**
* Following_Controller class.
*
* @author Matthias Pfefferle
*
* @see https://www.w3.org/TR/activitypub/#following
*/
class Following_Controller extends Actors_Controller {
use Collection;
/**
* Register routes.
*/
public function register_routes() {
\register_rest_route(
$this->namespace,
'/' . $this->rest_base . '/following',
array(
'args' => array(
'user_id' => array(
'description' => 'The ID of the actor.',
'type' => 'integer',
'required' => true,
'validate_callback' => array( $this, 'validate_user_id' ),
),
),
array(
'methods' => \WP_REST_Server::READABLE,
'callback' => array( $this, 'get_items' ),
'permission_callback' => array( $this, 'verify_signature' ),
'args' => array(
'page' => array(
'description' => 'Current page of the collection.',
'type' => 'integer',
'minimum' => 1,
// No default so we can differentiate between Collection and CollectionPage requests.
),
'per_page' => array(
'description' => 'Maximum number of items to be returned in result set.',
'type' => 'integer',
'default' => 10,
'minimum' => 1,
'maximum' => 100,
),
'order' => array(
'description' => 'Order sort attribute ascending or descending.',
'type' => 'string',
'default' => 'desc',
'enum' => array( 'asc', 'desc' ),
),
'context' => array(
'description' => 'The context in which the request is made.',
'type' => 'string',
'default' => 'simple',
'enum' => array( 'simple', 'full' ),
),
),
),
'schema' => array( $this, 'get_public_item_schema' ),
)
);
}
/**
* Retrieves following list.
*
* @param \WP_REST_Request $request Full details about the request.
* @return \WP_REST_Response|\WP_Error Response object on success, or WP_Error object on failure.
*/
public function get_items( $request ) {
$user_id = $request->get_param( 'user_id' );
/**
* Action triggered prior to the ActivityPub profile being created and sent to the client.
*/
\do_action( 'activitypub_rest_following_pre' );
$order = $request->get_param( 'order' );
$per_page = $request->get_param( 'per_page' );
$page = $request->get_param( 'page' ) ?? 1;
$context = $request->get_param( 'context' );
$data = Following::query( $user_id, $per_page, $page, array( 'order' => \ucwords( $order ) ) );
$response = array(
'id' => get_rest_url_by_path( \sprintf( 'actors/%d/following', $user_id ) ),
'generator' => 'https://wordpress.org/?v=' . get_masked_wp_version(),
'type' => 'OrderedCollection',
'totalItems' => $data['total'],
);
if ( 'full' === $context ) {
// Ensure the context is the first element in the response.
$response = array( '@context' => Base_Object::JSON_LD_CONTEXT ) + $response;
}
if ( $this->show_social_graph( $request ) ) {
$response['orderedItems'] = \array_filter(
\array_map(
static function ( $item ) use ( $context ) {
if ( 'full' === $context ) {
$actor = Remote_Actors::get_actor( $item );
if ( \is_wp_error( $actor ) ) {
return false;
}
return $actor->to_array( false );
}
return $item->guid;
},
$data['following']
)
);
}
$response = $this->prepare_collection_response( $response, $request );
if ( \is_wp_error( $response ) ) {
return $response;
}
$response = \rest_ensure_response( $response );
$response->header( 'Content-Type', 'application/activity+json; charset=' . \get_option( 'blog_charset' ) );
return $response;
}
/**
* Retrieves the following schema, conforming to JSON Schema.
*
* @return array Item schema data.
*/
public function get_item_schema() {
if ( $this->schema ) {
return $this->add_additional_fields_schema( $this->schema );
}
// Define the schema for items in the following collection.
$item_schema = array(
'oneOf' => array(
array(
'type' => 'string',
'format' => 'uri',
),
array(
'type' => 'object',
'properties' => array(
'id' => array(
'type' => 'string',
'format' => 'uri',
),
'type' => array(
'type' => 'string',
),
'name' => array(
'type' => 'string',
),
'icon' => array(
'type' => 'object',
'properties' => array(
'type' => array(
'type' => 'string',
),
'mediaType' => array(
'type' => 'string',
),
'url' => array(
'type' => 'string',
'format' => 'uri',
),
),
),
'published' => array(
'type' => 'string',
'format' => 'date-time',
),
'summary' => array(
'type' => 'string',
),
'updated' => array(
'type' => 'string',
'format' => 'date-time',
),
'url' => array(
'type' => 'string',
'format' => 'uri',
),
'streams' => array(
'type' => 'array',
),
'preferredUsername' => array(
'type' => 'string',
),
),
),
),
);
$schema = $this->get_collection_schema( $item_schema );
// Add following-specific properties.
$schema['title'] = 'following';
$schema['properties']['actor'] = array(
'description' => 'The actor who owns the following collection.',
'type' => 'string',
'format' => 'uri',
'readonly' => true,
);
$schema['properties']['generator'] = array(
'description' => 'The generator of the following collection.',
'type' => 'string',
'format' => 'uri',
'readonly' => true,
);
$this->schema = $schema;
return $this->add_additional_fields_schema( $this->schema );
}
}