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1<?php
2/**
3 * Activity log REST bridge — proxies /sites/{id}/activity/rewindable.
4 *
5 * @package automattic/jetpack-backup-plugin
6 */
7
8namespace Automattic\Jetpack\Backup\V0005\REST;
9
10use Automattic\Jetpack\Connection\Client;
11use WP_Error;
12use WP_REST_Request;
13use WP_REST_Server;
14
15if ( ! defined( 'ABSPATH' ) ) {
16    exit( 0 );
17}
18
19/**
20 * Powers the modernized Overview's activity list. Forwards the raw
21 * WPCOM rewindable-activity response; the React layer's
22 * `normalize/activity-log.ts` converts entries to `ActivityItem` shape.
23 */
24class Activity_Log_Bridge {
25
26    /**
27     * Register routes.
28     *
29     * @return void
30     */
31    public static function register_routes() {
32        // NOTE: not `/activity-log` — that namespace is owned by the
33        // `automattic/jetpack-activity-log` package's REST controller,
34        // which is loaded inside the Jetpack plugin. Sharing the route
35        // would let `register_rest_route`'s endpoint-merge pick the
36        // wrong handler at dispatch time (the two bridges proxy
37        // different WPCOM endpoints with different response shapes).
38        register_rest_route(
39            'jetpack/v4',
40            '/site/rewindable-activity',
41            array(
42                'methods'             => WP_REST_Server::READABLE,
43                'callback'            => array( __CLASS__, 'get_activity_log' ),
44                'permission_callback' => array( Rest_Controller::class, 'permission_check' ),
45                // Bounds mirror what WPCOM's own `get_stream_args()`
46                // validate_callback enforces on `/activity/rewindable`, and
47                // the sibling `jetpack-activity-log` package's declaration.
48                // Declaring them here turns an out-of-range value into a 400
49                // with a useful message instead of a round-trip that WPCOM
50                // rejects.
51                'args'                => array(
52                    'number' => array(
53                        'description' => __( 'Number of items to return per page.', 'jetpack-backup-pkg' ),
54                        'type'        => 'integer',
55                        'minimum'     => 1,
56                        'maximum'     => 1000,
57                    ),
58                    'page'   => array(
59                        'description' => __( '1-indexed page number.', 'jetpack-backup-pkg' ),
60                        'type'        => 'integer',
61                        'minimum'     => 1,
62                    ),
63                ),
64            )
65        );
66    }
67
68    /**
69     * Proxy the WPCOM rewindable activity log.
70     *
71     * Forwards `number` (per page) and `page` (1-indexed) so the dashboard
72     * paginates against the real server response — `totalItems` /
73     * `totalPages` come back in the WPCOM envelope and drive DataViews'
74     * pagination footer. Same param shape the `automattic/jetpack-activity-log`
75     * package uses against the parent `/sites/{id}/activity` endpoint.
76     *
77     * @param WP_REST_Request $request The REST request.
78     * @return \WP_REST_Response|WP_Error
79     */
80    public static function get_activity_log( WP_REST_Request $request ) {
81        $blog_id = Rest_Controller::get_blog_id_or_error();
82        if ( is_wp_error( $blog_id ) ) {
83            return $blog_id;
84        }
85
86        $query = array_filter(
87            array(
88                'number'  => $request->get_param( 'number' ),
89                'page'    => $request->get_param( 'page' ),
90                // Activity summaries are rendered by WPCOM. Without this they
91                // come back in English whatever the reader's language is.
92                '_locale' => get_user_locale(),
93            ),
94            static function ( $value ) {
95                return null !== $value && '' !== $value;
96            }
97        );
98
99        $endpoint = sprintf( '/sites/%d/activity/rewindable', $blog_id );
100        if ( ! empty( $query ) ) {
101            $endpoint .= '?' . http_build_query( $query );
102        }
103
104        $response = Client::wpcom_json_api_request_as_user(
105            $endpoint,
106            'v2',
107            array(),
108            null,
109            'wpcom'
110        );
111
112        if ( is_wp_error( $response ) ) {
113            return Rest_Controller::transport_error( $response, 'activity_log_fetch_failed' );
114        }
115
116        $status_code = wp_remote_retrieve_response_code( $response );
117        if ( 200 !== $status_code ) {
118            return new WP_Error(
119                'activity_log_fetch_failed',
120                __( 'Could not fetch the site activity log.', 'jetpack-backup-pkg' ),
121                array( 'status' => is_int( $status_code ) && $status_code > 0 ? $status_code : 500 )
122            );
123        }
124
125        return rest_ensure_response( json_decode( wp_remote_retrieve_body( $response ), true ) );
126    }
127}