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WPCOM_REST_API_V2_Endpoint_Goodreads
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1<?php
2/**
3 * Get the User ID of a Goodreads account using its Author ID.
4 *
5 * @package automattic/jetpack
6 */
7
8if ( ! defined( 'ABSPATH' ) ) {
9    exit( 0 );
10}
11
12/**
13 * Goodreads block endpoint.
14 */
15class WPCOM_REST_API_V2_Endpoint_Goodreads extends WP_REST_Controller {
16    /**
17     * Constructor.
18     */
19    public function __construct() {
20        add_action( 'rest_api_init', array( $this, 'register_routes' ) );
21    }
22
23    /**
24     * Register endpoint route.
25     */
26    public function register_routes() {
27        register_rest_route(
28            'wpcom/v2',
29            '/goodreads/user-id',
30            array(
31                array(
32                    'methods'             => WP_REST_Server::READABLE,
33                    'callback'            => array( $this, 'get_goodreads_user_id' ),
34                    'permission_callback' => function () {
35                        return current_user_can( 'edit_posts' );
36                    },
37                    'args'                => array(
38                        'id' => array(
39                            'description'       => __( 'Goodreads user ID', 'jetpack' ),
40                            'type'              => 'integer',
41                            'required'          => true,
42                            'minimum'           => 1,
43                            'validate_callback' => function ( $param ) {
44                                return is_numeric( $param ) && (int) $param > 0;
45                            },
46                        ),
47                    ),
48                ),
49            )
50        );
51    }
52
53    /**
54     * Get the user ID from the author ID.
55     *
56     * @param \WP_REST_Request $request request object.
57     *
58     * @return \WP_Error|int Goodreads user ID (or 404 error if not found).
59     */
60    public function get_goodreads_user_id( $request ) {
61        $profile_id = $request->get_param( 'id' );
62        $url        = 'https://www.goodreads.com/author/show/' . $profile_id;
63        $response   = wp_remote_get( esc_url_raw( $url ) );
64        $not_found  = new WP_Error( 'not_found', 'Goodreads user not found.', array( 'status' => 404 ) );
65
66        if ( is_wp_error( $response ) ) {
67            return $response;
68        }
69
70        $body    = wp_remote_retrieve_body( $response );
71        $pattern = '/goodreads\.com\/user\/updates_rss\/(\d+)/';
72
73        if ( preg_match( $pattern, $body, $matches ) ) {
74            $user_id = intval( $matches[1] );
75            return $user_id;
76        }
77
78        return $not_found;
79    }
80}
81
82wpcom_rest_api_v2_load_plugin( 'WPCOM_REST_API_V2_Endpoint_Goodreads' );