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

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