wordpress-activitypub/includes/rest/class-followers.php

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<?php
namespace Activitypub\Rest;
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use WP_Error;
use stdClass;
use WP_REST_Server;
use WP_REST_Response;
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use Activitypub\Validator\Query;
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use Activitypub\Collection\Users as User_Collection;
use Activitypub\Collection\Followers as Follower_Collection;
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use function Activitypub\get_rest_url_by_path;
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/**
* ActivityPub Followers REST-Class
*
* @author Matthias Pfefferle
*
* @see https://www.w3.org/TR/activitypub/#followers
*/
class Followers {
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/**
* Initialize the class, registering WordPress hooks
*/
public static function init() {
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\add_action( 'rest_api_init', array( self::class, 'register_routes' ) );
}
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/**
* Register routes
*/
public static function register_routes() {
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\register_rest_route(
ACTIVITYPUB_REST_NAMESPACE,
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'/users/(?P<user_id>[\w\-\.]+)/followers',
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array(
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array(
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'methods' => WP_REST_Server::READABLE,
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'callback' => array( self::class, 'get' ),
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'args' => Query::get_default_args(),
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'permission_callback' => '__return_true',
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),
)
);
}
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/**
* Handle GET request
*
* @param WP_REST_Request $request
*
* @return WP_REST_Response
*/
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public static function get( $request ) {
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$user_id = $request->get_param( 'user_id' );
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$user = User_Collection::get_by_various( $user_id );
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if ( is_wp_error( $user ) ) {
return $user;
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}
$order = $request->get_param( 'order' );
$per_page = (int) $request->get_param( 'per_page' );
$page = (int) $request->get_param( 'page' );
$context = $request->get_param( 'context' );
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/*
* Action triggerd prior to the ActivityPub profile being created and sent to the client
*/
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\do_action( 'activitypub_rest_followers_pre' );
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$data = Follower_Collection::get_followers_with_count( $user_id, $per_page, $page, array( 'order' => ucwords( $order ) ) );
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$json = new stdClass();
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$json->{'@context'} = \Activitypub\get_context();
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$json->id = get_rest_url_by_path( sprintf( 'users/%d/followers', $user->get__id() ) );
$json->generator = 'http://wordpress.org/?v=' . \get_bloginfo_rss( 'version' );
$json->actor = $user->get_id();
$json->type = 'OrderedCollectionPage';
$json->totalItems = $data['total']; // phpcs:ignore
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$json->partOf = get_rest_url_by_path( sprintf( 'users/%d/followers', $user->get__id() ) ); // phpcs:ignore
$json->first = \add_query_arg( 'page', 1, $json->partOf ); // phpcs:ignore
$json->last = \add_query_arg( 'page', \ceil ( $json->totalItems / $per_page ), $json->partOf ); // phpcs:ignore
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if ( $page && ( ( \ceil ( $json->totalItems / $per_page ) ) > $page ) ) { // phpcs:ignore
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$json->next = \add_query_arg( 'page', $page + 1, $json->partOf ); // phpcs:ignore
}
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if ( $page && ( $page > 1 ) ) { // phpcs:ignore
$json->prev = \add_query_arg( 'page', $page - 1, $json->partOf ); // phpcs:ignore
}
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// phpcs:ignore
$json->orderedItems = array_map(
function( $item ) use ( $context ) {
if ( 'full' === $context ) {
return $item->to_array();
}
return $item->get_url();
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},
$data['followers']
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);
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$response = new WP_REST_Response( $json, 200 );
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$response->header( 'Content-Type', 'application/activity+json' );
return $response;
}
}