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1<?php
2/**
3 * Primary class file for the Jetpack Backup plugin.
4 *
5 * @package automattic/jetpack-backup-plugin
6 */
7
8// After changing this file, consider increasing the version number ("VXXX") in all the files using this namespace, in
9// order to ensure that the specific version of this file always get loaded. Otherwise, Jetpack autoloader might decide
10// to load an older/newer version of the class (if, for example, both the standalone and bundled versions of the plugin
11// are installed, or in some other cases).
12namespace Automattic\Jetpack\Backup\V0005;
13
14if ( ! defined( 'ABSPATH' ) ) {
15    exit( 0 );
16}
17
18use Automattic\Jetpack\Admin_UI\Admin_Menu;
19use Automattic\Jetpack\Assets;
20use Automattic\Jetpack\Backup\V0005\Initial_State as Backup_Initial_State;
21use Automattic\Jetpack\Config;
22use Automattic\Jetpack\Connection\Client;
23use Automattic\Jetpack\Connection\Initial_State as Connection_Initial_State;
24use Automattic\Jetpack\Connection\Manager as Connection_Manager;
25use Automattic\Jetpack\Connection\Rest_Authentication as Connection_Rest_Authentication;
26use Automattic\Jetpack\My_Jetpack\Wpcom_Products;
27use Automattic\Jetpack\Status;
28use Automattic\Jetpack\Terms_Of_Service;
29use Automattic\Jetpack\Tracking;
30use Jetpack_Options;
31use WP_Error;
32use WP_REST_Server;
33use function add_action;
34use function add_filter;
35use function did_action;
36use function do_action;
37use function esc_url_raw;
38use function get_option;
39use function is_wp_error;
40use function rest_ensure_response;
41use function update_option;
42use function wp_add_inline_script;
43use function wp_remote_get;
44use function wp_remote_retrieve_body;
45use function wp_remote_retrieve_response_code;
46
47/**
48 * Class Jetpack_Backup
49 */
50class Jetpack_Backup {
51
52    /**
53     * Slug.
54     *
55     * @var string
56     */
57    const JETPACK_BACKUP_SLUG = 'jetpack-backup';
58
59    /**
60     * Backup name.
61     *
62     * @var string
63     */
64    const JETPACK_BACKUP_NAME = 'Jetpack Backup';
65
66    /**
67     * Backup URL.
68     *
69     * @var string
70     */
71    const JETPACK_BACKUP_URI = 'https://jetpack.com/jetpack-backup';
72
73    /**
74     * Promoted product.
75     *
76     * @var string
77     */
78    const JETPACK_BACKUP_PROMOTED_PRODUCT = 'jetpack_backup_t1_yearly';
79
80    /**
81     * Licenses product ID.
82     *
83     * @var string
84     */
85    const JETPACK_BACKUP_PRODUCT_IDS = array(
86        2014, // JETPACK_COMPLETE.
87        2015, // JETPACK_COMPLETE_MONTHLY.
88        2016, // JETPACK_SECURITY_TIER_1_YEARLY.
89        2017, // JETPACK_SECURITY_TIER_1_MONTHLY.
90        2019, // JETPACK_SECURITY_TIER_2_YEARLY.
91        2020, // JETPACK_SECURITY_TIER_2_MONTHLY.
92        2112, // JETPACK_BACKUP_TIER_1_YEARLY.
93        2113, // JETPACK_BACKUP_TIER_1_MONTHLY.
94        2114, // JETPACK_BACKUP_TIER_2_YEARLY.
95        2115, // JETPACK_BACKUP_TIER_2_MONTHLY.
96    );
97
98    /**
99     * Jetpack Backup DB version.
100     *
101     * @var string
102     */
103    const JETPACK_BACKUP_DB_VERSION = '2';
104
105    /**
106     * Filter name that gates the wp-build–based dashboard.
107     *
108     * When this filter returns true, "Jetpack > Backup" renders the new
109     * wp-build dashboard instead of the legacy React app.
110     */
111    const MODERNIZATION_FILTER = 'rsm_jetpack_ui_modernization_backup';
112
113    /**
114     * Constructor.
115     */
116    public static function initialize() {
117        if ( did_action( 'jetpack_backup_initialized' ) ) {
118            return;
119        }
120
121        // Set up the REST authentication hooks.
122        Connection_Rest_Authentication::init();
123
124        add_action( 'rest_api_init', array( __CLASS__, 'register_rest_routes' ) );
125        add_action( 'rest_api_init', array( \Automattic\Jetpack\Backup\V0005\REST\Rest_Controller::class, 'register_routes' ) );
126
127        add_action( 'admin_menu', array( __CLASS__, 'maybe_load_wp_build' ), 1 );
128        add_action( 'admin_menu', array( __CLASS__, 'add_wp_admin_submenu' ), 1 ); // Akismet uses 4, so we need to use 1 to ensure both menus are added when only they exist.
129
130        // Init Jetpack packages.
131        add_action(
132            'plugins_loaded',
133            function () {
134                $config = new Config();
135                // Connection package.
136                $config->ensure(
137                    'connection',
138                    array(
139                        'slug'     => self::JETPACK_BACKUP_SLUG,
140                        'name'     => self::JETPACK_BACKUP_NAME,
141                        'url_info' => self::JETPACK_BACKUP_URI,
142                    )
143                );
144                // Sync package.
145                $config->ensure( 'sync' );
146
147                // Identity crisis package.
148                $config->ensure( 'identity_crisis' );
149            },
150            1
151        );
152
153        add_action( 'plugins_loaded', array( __CLASS__, 'maybe_upgrade_db' ), 20 );
154
155        add_filter( 'jetpack_connection_user_has_license', array( __CLASS__, 'jetpack_check_user_licenses' ), 10, 3 );
156
157        // Jetpack Backup abilities are registered from `actions.php` at package
158        // autoload time so the surface is available in every consumer that
159        // loads this package (both the standalone Backup plugin and the
160        // Jetpack plugin), not only when `Jetpack_Backup::initialize()` runs.
161
162        /**
163         * Runs right after the Jetpack Backup package is initialized.
164         *
165         * @since 1.3.0
166         */
167        do_action( 'jetpack_backup_initialized' );
168    }
169
170    /**
171     * The page to be added to submenu
172     */
173    public static function add_wp_admin_submenu() {
174        $wp_build_active = self::is_wp_build_dashboard_active();
175        $callback        = $wp_build_active
176            ? 'jetpack_backup_jetpack_backup_dashboard_wp_admin_render_page'
177            : array( __CLASS__, 'plugin_settings_page' );
178
179        // The relabel rides the modernized dashboard rather than the filter alone,
180        // so a fallback to the legacy page also falls back to the legacy title.
181        $page_title = $wp_build_active ? 'Jetpack VaultPress Backup' : 'Jetpack Backup';
182        $menu_title = $wp_build_active ? 'VaultPress Backup' : 'Backup'; // Product name, do not translate.
183
184        $page_suffix = Admin_Menu::add_menu(
185            $page_title,
186            $menu_title,
187            'manage_options',
188            self::JETPACK_BACKUP_SLUG,
189            $callback,
190            7
191        );
192
193        if ( $page_suffix ) {
194            add_action( 'load-' . $page_suffix, array( __CLASS__, 'admin_init' ) );
195        }
196    }
197
198    /**
199     * Initialize the admin resources.
200     */
201    public static function admin_init() {
202        add_action( 'admin_enqueue_scripts', array( __CLASS__, 'enqueue_admin_scripts' ) );
203
204        if ( self::is_wp_build_dashboard_active() ) {
205            // The modernized Backup overview is a focused, full-screen product
206            // surface. Suppress JITMs and other core/plugin admin notices so they
207            // don't reflow on top of the dual-pane layout. Mirrors how Jetpack
208            // Forms handles its dashboard page
209            // (`plugins/forms/src/dashboard/class-dashboard.php`).
210            remove_all_actions( 'admin_notices' );
211            remove_all_actions( 'all_admin_notices' );
212        }
213    }
214
215    /**
216     * Checks current version against version in code and run upgrades if we are running a new version
217     */
218    public static function maybe_upgrade_db() {
219        $current_db_version = get_option( 'jetpack_backup_db_version' );
220        if ( version_compare( $current_db_version, self::JETPACK_BACKUP_DB_VERSION, '<' ) ) {
221            update_option( 'jetpack_backup_db_version', self::JETPACK_BACKUP_DB_VERSION );
222            Jetpack_Backup_Upgrades::upgrade();
223        }
224    }
225
226    /**
227     * Returns whether we are in condition to track to use
228     * Analytics functionality like Tracks, MC, or GA.
229     */
230    public static function can_use_analytics() {
231        $status     = new Status();
232        $connection = new Connection_Manager( 'jetpack-backup' );
233        $tracking   = new Tracking( 'jetpack', $connection );
234
235        return $tracking->should_enable_tracking( new Terms_Of_Service(), $status );
236    }
237
238    /**
239     * Enqueue plugin admin scripts and styles.
240     */
241    public static function enqueue_admin_scripts() {
242        // This callback is registered via `load-{$page_suffix}` in `add_wp_admin_submenu()`,
243        // so it only fires on the Backup admin page — no need to re-check the page here.
244        if ( self::is_wp_build_dashboard_active() ) {
245            // The i18n loader is registered on every admin page by jetpack-assets but
246            // only enqueued when depended on; the esbuild bundles don't pull it in.
247            // Enqueue it here, before the early return, so the wp-build dashboard's
248            // init module can download its JS translation catalogs.
249            if ( wp_script_is( 'wp-jp-i18n-loader', 'registered' ) ) {
250                wp_enqueue_script( 'wp-jp-i18n-loader' );
251            }
252
253            // The esbuild bundles don't declare the Tracks client as a dependency
254            // either, so it never reaches the page on its own.
255            if ( self::can_use_analytics() ) {
256                Tracking::register_tracks_functions_scripts( true );
257            }
258
259            // wp-build manages its own enqueue pipeline. The legacy script and
260            // its initial state are skipped for the wp-build dashboard.
261            return;
262        }
263
264        Assets::register_script(
265            'jetpack-backup',
266            '../build/index.js',
267            __FILE__,
268            array(
269                'in_footer'  => true,
270                'textdomain' => 'jetpack-backup-pkg',
271            )
272        );
273        Assets::enqueue_script( 'jetpack-backup' );
274        // Initial JS state including JP Connection data.
275        wp_add_inline_script( 'jetpack-backup', self::get_initial_state(), 'before' );
276        Connection_Initial_State::render_script( 'jetpack-backup' );
277
278        // Load script for analytics.
279        if ( self::can_use_analytics() ) {
280            Tracking::register_tracks_functions_scripts( true );
281        }
282    }
283
284    /**
285     * Main plugin settings page.
286     */
287    public static function plugin_settings_page() {
288        ?>
289            <div id="jetpack-backup-root"></div>
290        <?php
291    }
292
293    /**
294     * Return the rendered initial state JavaScript code.
295     *
296     * @return string
297     */
298    private static function get_initial_state() {
299        return ( new Backup_Initial_State() )->render();
300    }
301
302    /**
303     * Register REST API
304     */
305    public static function register_rest_routes() {
306
307        // Get information on most recent 10 backups.
308        register_rest_route(
309            'jetpack/v4',
310            '/backups',
311            array(
312                'methods'             => WP_REST_Server::READABLE,
313                'callback'            => __CLASS__ . '::get_recent_backups',
314                'permission_callback' => __CLASS__ . '::backups_permissions_callback',
315            )
316        );
317
318        // Get site backup/scan/anti-spam capabilities.
319        register_rest_route(
320            'jetpack/v4',
321            '/backup-capabilities',
322            array(
323                'methods'             => WP_REST_Server::READABLE,
324                'callback'            => __CLASS__ . '::get_backup_capabilities',
325                'permission_callback' => __CLASS__ . '::backups_permissions_callback',
326            )
327        );
328
329        // Get whether the site has a backup plan
330        register_rest_route(
331            'jetpack/v4',
332            '/has-backup-plan',
333            array(
334                'methods'             => WP_REST_Server::READABLE,
335                'callback'            => __CLASS__ . '::has_backup_plan',
336                'permission_callback' => __CLASS__ . '::backups_permissions_callback',
337            )
338        );
339
340        // Get site rewind data.
341        register_rest_route(
342            'jetpack/v4',
343            '/restores',
344            array(
345                'methods'             => WP_REST_Server::READABLE,
346                'callback'            => __CLASS__ . '::get_recent_restores',
347                'permission_callback' => __CLASS__ . '::backups_permissions_callback',
348            )
349        );
350
351        // Get information on site products.
352        // Backup plugin version of /site/purchases from JP plugin.
353        // Revert once this route and MyPlan component are extracted to a common package.
354        register_rest_route(
355            'jetpack/v4',
356            '/site/current-purchases',
357            array(
358                'methods'             => WP_REST_Server::READABLE,
359                'callback'            => __CLASS__ . '::get_site_current_purchases',
360                'permission_callback' => __CLASS__ . '::backups_permissions_callback',
361            )
362        );
363
364        // Get currently promoted product from the product's endpoint.
365            register_rest_route(
366                'jetpack/v4',
367                '/backup-promoted-product-info',
368                array(
369                    'methods'             => WP_REST_Server::READABLE,
370                    'callback'            => __CLASS__ . '::get_backup_promoted_product_info',
371                    'permission_callback' => __CLASS__ . '::backups_permissions_callback',
372                )
373            );
374
375        // Get and set value of dismissed_backup_review_request option
376        register_rest_route(
377            'jetpack/v4',
378            '/site/dismissed-review-request',
379            array(
380                'methods'             => WP_REST_Server::EDITABLE,
381                'callback'            => __CLASS__ . '::manage_dismissed_backup_review_request',
382                'permission_callback' => __CLASS__ . '::backups_permissions_callback',
383                'args'                => array(
384                    'option_name'    => array(
385                        'required' => true,
386                        'type'     => 'string',
387                        // The two names `Jetpack_Options` recognises. Anything else
388                        // falls through its allowlist to a `trigger_error()` and is
389                        // stored nowhere, so an unlisted reason would dismiss
390                        // nothing while answering as though it had — and on a site
391                        // with `display_errors` on, the warning is printed ahead of
392                        // the JSON and the response no longer parses.
393                        'enum'     => array( 'restore', 'backups' ),
394                    ),
395                    'should_dismiss' => array(
396                        'required' => true,
397                        'type'     => 'boolean',
398                    ),
399                ),
400            )
401        );
402
403        // Get site size
404        register_rest_route(
405            'jetpack/v4',
406            '/site/backup/size',
407            array(
408                'methods'             => WP_REST_Server::READABLE,
409                'callback'            => __CLASS__ . '::get_site_backup_size',
410                'permission_callback' => __CLASS__ . '::backups_permissions_callback',
411            )
412        );
413
414        // Get backup schedule time
415        register_rest_route(
416            'jetpack/v4',
417            '/site/backup/schedule',
418            array(
419                'methods'             => WP_REST_Server::READABLE,
420                'callback'            => __CLASS__ . '::get_site_backup_schedule_time',
421                'permission_callback' => __CLASS__ . '::backups_permissions_callback',
422            )
423        );
424
425        // Get site policies
426        register_rest_route(
427            'jetpack/v4',
428            '/site/backup/policies',
429            array(
430                'methods'             => WP_REST_Server::READABLE,
431                'callback'            => __CLASS__ . '::get_site_backup_policies',
432                'permission_callback' => __CLASS__ . '::backups_permissions_callback',
433            )
434        );
435
436        // Get site add-on offer
437        register_rest_route(
438            'jetpack/v4',
439            '/site/backup/addon-offer',
440            array(
441                'methods'             => WP_REST_Server::READABLE,
442                'callback'            => __CLASS__ . '::get_site_backup_addon_offer',
443                'permission_callback' => __CLASS__ . '::backups_permissions_callback',
444                'args'                => array(
445                    'storage_size'  => array(
446                        'required' => true,
447                        'type'     => 'numeric',
448                    ),
449                    'storage_limit' => array(
450                        'required' => true,
451                        'type'     => 'numeric',
452                    ),
453                ),
454            )
455        );
456
457        // Enqueue a new backup
458        register_rest_route(
459            'jetpack/v4',
460            '/site/backup/enqueue',
461            array(
462                'methods'             => WP_REST_Server::CREATABLE,
463                'callback'            => __CLASS__ . '::enqueue_backup',
464                'permission_callback' => __CLASS__ . '::backups_permissions_callback',
465            )
466        );
467    }
468
469    /**
470     * The backup calls should only occur from a signed in admin user
471     *
472     * @access public
473     * @static
474     *
475     * @return true|WP_Error
476     */
477    public static function backups_permissions_callback() {
478        return current_user_can( 'manage_options' );
479    }
480
481    /**
482     * The error a route answers with when its WordPress.com request did not come
483     * back with a 200.
484     *
485     * Returning `null` instead — which these routes used to do — is served as an
486     * HTTP 200 carrying a `null` body, so `apiFetch` resolves and nothing throws.
487     * A WordPress.com blip then reaches the dashboard as an empty success, which
488     * is how a paying customer ends up looking at the first-run screen. A
489     * WP_Error makes the REST layer answer with a status, so every caller's
490     * existing failure path runs.
491     *
492     * @param int $status The upstream response code, already cast to an int, or 0
493     *                    when the request never reached WordPress.com.
494     * @return WP_Error
495     */
496    private static function get_failed_fetch_error( $status = 0 ) {
497        return new WP_Error(
498            'failed_to_fetch_data',
499            esc_html__( 'Unable to fetch the requested data.', 'jetpack-backup-pkg' ),
500            array(
501                // A transport failure has no status at all, and `status_header( 0 )`
502                // emits an invalid status line — so anything falsy becomes a 500.
503                'status' => $status ? $status : 500,
504            )
505        );
506    }
507
508    /**
509     * Get information about recent backups
510     *
511     * @access public
512     * @static
513     *
514     * @return \WP_REST_Response|WP_Error The recent backups, or a WP_Error if WordPress.com could not be reached.
515     */
516    public static function get_recent_backups() {
517        $blog_id = Jetpack_Options::get_option( 'id' );
518
519        $response = Client::wpcom_json_api_request_as_blog(
520            '/sites/' . $blog_id . '/rewind/backups',
521            'v2',
522            array(),
523            null,
524            'wpcom'
525        );
526
527        $response_code = (int) wp_remote_retrieve_response_code( $response );
528
529        if ( 200 !== $response_code ) {
530            return self::get_failed_fetch_error( $response_code );
531        }
532
533        return rest_ensure_response(
534            json_decode( $response['body'], true )
535        );
536    }
537
538    /**
539     * Hits the wpcom api to check rewind status.
540     *
541     * @return Object|WP_Error
542     */
543    private static function get_rewind_state_from_wpcom() {
544        static $status = null;
545
546        if ( $status !== null ) {
547            return $status;
548        }
549
550        $site_id = Jetpack_Options::get_option( 'id' );
551
552        $response = Client::wpcom_json_api_request_as_blog( sprintf( '/sites/%d/rewind', $site_id ) . '?force=wpcom', '2', array( 'timeout' => 2 ), null, 'wpcom' );
553
554        // Cast: `wp_remote_retrieve_response_code()` hands back whatever the
555        // transport put there, and a numeric-string `'200'` fails this
556        // strict comparison. The result is memoized in `$status` and read by
557        // `has_backup_plan()`, which answers false for a `WP_Error` — so a
558        // site that does have Backup is told, for the rest of the request,
559        // that it does not. That answer is acted on: it backs the
560        // `/has-backup-plan` route and the standalone-license upsell.
561        if ( 200 !== (int) wp_remote_retrieve_response_code( $response ) ) {
562            return new WP_Error( 'rewind_state_fetch_failed' );
563        }
564
565        $body   = wp_remote_retrieve_body( $response );
566        $status = json_decode( $body );
567        return $status;
568    }
569
570    /**
571     * Checks whether the current plan (or purchases) of the site already supports the product
572     *
573     * @return boolean
574     */
575    public static function has_backup_plan() {
576        $rewind_data = static::get_rewind_state_from_wpcom();
577        if ( is_wp_error( $rewind_data ) ) {
578            return false;
579        }
580        return is_object( $rewind_data ) && isset( $rewind_data->state ) && 'unavailable' !== $rewind_data->state;
581    }
582
583    /**
584     * Get an array of backup/scan/anti-spam site capabilities
585     *
586     * @access public
587     * @static
588     *
589     * @return \WP_REST_Response|WP_Error The site capabilities, or a WP_Error if WordPress.com could not be reached.
590     */
591    public static function get_backup_capabilities() {
592        $blog_id = Jetpack_Options::get_option( 'id' );
593
594        $response = Client::wpcom_json_api_request_as_user(
595            '/sites/' . $blog_id . '/rewind/capabilities',
596            'v2',
597            array(),
598            null,
599            'wpcom'
600        );
601
602        $response_code = (int) wp_remote_retrieve_response_code( $response );
603
604        if ( 200 !== $response_code ) {
605            return self::get_failed_fetch_error( $response_code );
606        }
607
608        return rest_ensure_response(
609            json_decode( $response['body'], true )
610        );
611    }
612
613    /**
614     * Get information about recent restores
615     *
616     * @access public
617     * @static
618     *
619     * @return \WP_REST_Response|WP_Error The recent restores, or a WP_Error if WordPress.com could not be reached.
620     */
621    public static function get_recent_restores() {
622        $blog_id  = Jetpack_Options::get_option( 'id' );
623        $response = Client::wpcom_json_api_request_as_blog(
624            '/sites/' . $blog_id . '/rewind/restores',
625            'v2',
626            array(),
627            null,
628            'wpcom'
629        );
630
631        $response_code = (int) wp_remote_retrieve_response_code( $response );
632
633        if ( 200 !== $response_code ) {
634            return self::get_failed_fetch_error( $response_code );
635        }
636
637        return rest_ensure_response(
638            json_decode( $response['body'], true )
639        );
640    }
641
642    /**
643     * Query backup-completion events from the wpcom activity-log via the
644     * general `/sites/<id>/activity` endpoint with the action filter pinned
645     * to backup-completion event names. This endpoint paginates real-ly
646     * (Elasticsearch `from` offset under the hood) — the `/activity/rewindable`
647     * sibling looks like a more natural fit but hardcodes `page: 1,
648     * totalPages: 1` and ignores the `page` parameter.
649     *
650     * Auth: signs as user. The endpoint gates on the requesting WP user
651     * being an administrator of the blog (see
652     * sites-activity.php::readable_permission_check); blog-level tokens
653     * return 401.
654     *
655     * Returned shape (success): a W3C ActivityStreams envelope:
656     *   {
657     *     "@context": ..., "type": "OrderedCollection", "totalItems": int,
658     *     "page": int, "totalPages": int, "itemsPerPage": int,
659     *     "orderedItems": [ <event>, ... ]
660     *   }
661     * Each event has at least `published`, `rewind_id`, `is_rewindable`,
662     * `name`, `status`, `summary`.
663     *
664     * @param array $args Query args passed through to wpcom. Supported keys:
665     *                    `after` (ISO 8601), `before` (ISO 8601), `on` (ISO 8601),
666     *                    `date_range`, `number` (max 1000), `page` (1-based),
667     *                    `sort_order` ('asc'|'desc'). Any `action` key is
668     *                    overridden with the curated backup-completion list.
669     * @return array|\WP_REST_Response|null
670     */
671    public static function list_backup_events( array $args = array() ) {
672        $blog_id = Jetpack_Options::get_option( 'id' );
673
674        // Curated set of activity actions that represent "a backup completed".
675        // Mirrors `WPCOM_REST_API_V2_Endpoint_Site_Activity::$backup_action_names`.
676        // Pinned here (and overriding any caller-supplied `action`) so the
677        // helper is always scoped to backups regardless of what the caller passes.
678        $args['action'] = array(
679            'backup_complete_full',
680            'backup_complete_initial',
681            'backup_only_complete_full',
682            'backup_only_complete_initial',
683            'rewind__backup_complete_full',
684            'rewind__backup_complete_initial',
685            'rewind__backup_only_complete_full',
686            'rewind__backup_only_complete_initial',
687        );
688
689        $path = '/sites/' . (int) $blog_id . '/activity?' . http_build_query( $args );
690
691        $response = Client::wpcom_json_api_request_as_user(
692            $path,
693            'v2',
694            array(),
695            null,
696            'wpcom'
697        );
698
699        // Cast, as everywhere else this package reads a status. Uncast, a
700        // numeric-string `'200'` discards a good activity page and the
701        // `jetpack-backup/list-backup-events` ability reports that the site
702        // has completed no backups — `unwrap_response()` flattens this
703        // `null` into an empty list, which is a claim rather than an error.
704        if ( 200 !== (int) wp_remote_retrieve_response_code( $response ) ) {
705            return null;
706        }
707
708        return rest_ensure_response(
709            json_decode( $response['body'], true )
710        );
711    }
712
713    /**
714     * Gets information about the currently promoted backup product.
715     *
716     * @return object|WP_Error The promoted product, or a WP_Error if it could not be read.
717     */
718    public static function get_backup_promoted_product_info() {
719        $request_url   = 'https://public-api.wordpress.com/rest/v1.1/products?locale=' . get_user_locale() . '&type=jetpack';
720        $wpcom_request = wp_remote_get( esc_url_raw( $request_url ) );
721        // Cast: the transport may report the status as a numeric string, which
722        // a strict comparison against 200 sends down the failure path.
723        $response_code = (int) wp_remote_retrieve_response_code( $wpcom_request );
724
725        if ( 200 !== $response_code ) {
726            return new WP_Error(
727                'failed_to_fetch_data',
728                esc_html__( 'Unable to fetch the requested data.', 'jetpack-backup-pkg' ),
729                array(
730                    // A transport failure has no status at all; reporting 0 would
731                    // leave the REST layer with nothing to serve.
732                    'status'  => $response_code ? $response_code : 500,
733                    'request' => $wpcom_request,
734                )
735            );
736        }
737
738        $products = json_decode( wp_remote_retrieve_body( $wpcom_request ) );
739
740        // A 200 is not a promise that the promoted product is in the body. A
741        // truncated response decodes to null, and the slug is a constant here
742        // but a catalogue entry upstream — retiring it there leaves this a 200
743        // with the key absent. Reading through either emits a PHP warning and
744        // yields null, which the route then serves as a 200 carrying `null`:
745        // indistinguishable, to a caller, from a priced answer it failed to
746        // read. Refusing says which of the two happened.
747        if ( ! is_object( $products ) || ! isset( $products->{ self::JETPACK_BACKUP_PROMOTED_PRODUCT } ) ) {
748            return new WP_Error(
749                'promoted_product_unreadable',
750                esc_html__( 'Unable to read the promoted product information.', 'jetpack-backup-pkg' ),
751                array( 'status' => 500 )
752            );
753        }
754
755        return $products->{ self::JETPACK_BACKUP_PROMOTED_PRODUCT };
756    }
757
758    /**
759     * Check for user licenses.
760     *
761     * @param boolean $has_license If the user already has a license found.
762     * @param array   $licenses List of unattached licenses belonging to the user.
763     * @param string  $plugin_slug The plugin that initiated the flow.
764     *
765     * @return boolean
766     */
767    public static function jetpack_check_user_licenses( $has_license, $licenses, $plugin_slug ) {
768        if ( $plugin_slug !== static::JETPACK_BACKUP_SLUG || $has_license ) {
769            return $has_license;
770        }
771
772        $license_found = false;
773
774        foreach ( $licenses as $license ) {
775            if ( in_array( $license->product_id, static::JETPACK_BACKUP_PRODUCT_IDS, true ) ) {
776                $license_found = true;
777                break;
778            }
779        }
780
781        // Checking for existing backup plan is costly, so only check if there's an appropriate license.
782        return $license_found && ! static::has_backup_plan();
783    }
784
785    /**
786     * Returns the result of `/upgrades` endpoint call.
787     *
788     * @return \WP_REST_Response|WP_Error The site purchases, or a WP_Error if WordPress.com could not be reached.
789     */
790    public static function get_site_current_purchases() {
791
792        $request  = sprintf( '/upgrades?site=%d', Jetpack_Options::get_option( 'id' ) );
793        $response = Client::wpcom_json_api_request_as_blog( $request, '1.2' );
794
795        // Bail if there was an error or malformed response.
796        if ( is_wp_error( $response ) || ! is_array( $response ) || ! isset( $response['body'] ) ) {
797            return self::get_failed_fetch_error();
798        }
799
800        $response_code = (int) wp_remote_retrieve_response_code( $response );
801
802        if ( 200 !== $response_code ) {
803            return self::get_failed_fetch_error( $response_code );
804        }
805
806        return rest_ensure_response(
807            json_decode( $response['body'], true )
808        );
809    }
810
811    /**
812     * Set value of the dismissed_backup_review_request Jetack option.
813     * Get value if should_dismiss is false
814     *
815     * @access public
816     * @static
817     * @param array $request arguments should_dismiss and option_name.
818     * @return bool value of option if value is requested | updated or not if value is updated.
819     */
820    public static function manage_dismissed_backup_review_request( $request ) {
821
822        if ( ! $request['should_dismiss'] ) {
823
824            return rest_ensure_response(
825                Jetpack_Options::get_option( 'dismissed_backup_review_' . $request['option_name'] )
826            );
827        }
828
829        return Jetpack_Options::update_option( 'dismissed_backup_review_' . $request['option_name'], true );
830    }
831
832    /**
833     * Get site storage size
834     *
835     * @return \WP_REST_Response|WP_Error The site storage size, or a WP_Error if WordPress.com could not be reached.
836     */
837    public static function get_site_backup_size() {
838        $blog_id = Jetpack_Options::get_option( 'id' );
839
840        $response = Client::wpcom_json_api_request_as_user(
841            '/sites/' . $blog_id . '/rewind/size?force=wpcom',
842            'v2',
843            array(),
844            null,
845            'wpcom'
846        );
847
848        $response_code = (int) wp_remote_retrieve_response_code( $response );
849
850        if ( 200 !== $response_code ) {
851            return self::get_failed_fetch_error( $response_code );
852        }
853
854        return rest_ensure_response(
855            json_decode( $response['body'], true )
856        );
857    }
858
859    /**
860     * Get site policies from WPCOM. It includes the storage limit and activity log limit, if apply.
861     *
862     * @return \WP_REST_Response|WP_Error The site storage policies, or a WP_Error if WordPress.com could not be reached.
863     */
864    public static function get_site_backup_policies() {
865        $blog_id = Jetpack_Options::get_option( 'id' );
866
867        $response = Client::wpcom_json_api_request_as_user(
868            '/sites/' . $blog_id . '/rewind/policies?force=wpcom',
869            'v2',
870            array(),
871            null,
872            'wpcom'
873        );
874
875        $response_code = (int) wp_remote_retrieve_response_code( $response );
876
877        if ( 200 !== $response_code ) {
878            return self::get_failed_fetch_error( $response_code );
879        }
880
881        return rest_ensure_response(
882            json_decode( $response['body'], true )
883        );
884    }
885
886    /**
887     * Get suggested storage addon based on storage usage
888     *
889     * @param int $bytes_used      Storage used.
890     * @param int $bytes_available Storage limit.
891     * @return string Suggested addon storage slug
892     */
893    public static function get_storage_addon_upsell_slug( $bytes_used, $bytes_available ) {
894        $bytes_10gb  = 10 * 1024 * 1024 * 1024; // 10GB in bytes
895        $bytes_100gb = 100 * 1024 * 1024 * 1024; // 100GB in bytes
896        $bytes_1tb   = 1024 * 1024 * 1024 * 1024; // 1TB in bytes
897
898        $upsell_products = array(
899            $bytes_10gb  => 'jetpack_backup_addon_storage_10gb_monthly',
900            $bytes_100gb => 'jetpack_backup_addon_storage_100gb_monthly',
901            $bytes_1tb   => 'jetpack_backup_addon_storage_1tb_monthly',
902        );
903
904        // If usage has crossed over the storage limit, then dynamically calculate the upgrade option
905        if ( $bytes_used > $bytes_available ) {
906            $additional_bytes_used = $bytes_used - $bytes_available;
907
908            // Add aditional 25% buffer
909            $additional_bytes_needed = $additional_bytes_used + $additional_bytes_used * 0.25;
910
911            // Since 1TB is our max upgrade but the additional storage needed is greater than 1TB, then just return 1TB
912            if ( $additional_bytes_needed > $bytes_1tb ) {
913                return $upsell_products[ $bytes_1tb ];
914            }
915
916            $matched_bytes = $bytes_10gb;
917            foreach ( $upsell_products as $bytes => $product ) {
918                if ( $bytes > $additional_bytes_needed ) {
919                    $matched_bytes = $bytes;
920                    break;
921                }
922            }
923
924            return $upsell_products[ $matched_bytes ];
925        }
926
927        // For 1 TB we are going to offer 1 TB by default
928        if ( $bytes_1tb === $bytes_available ) {
929            return $upsell_products[ $bytes_1tb ];
930        }
931
932        // Otherwise, we are going to offer 10 GB
933        return $upsell_products[ $bytes_10gb ];
934    }
935
936    /**
937     * Get the best addon offer for this site, including pricing details
938     *
939     * @param \WP_REST_Request $request Object including storage usage.
940     *
941     * @return string|WP_Error A JSON object with the suggested storage addon details if the request was successful,
942     *                         or a WP_Error otherwise.
943     */
944    public static function get_site_backup_addon_offer( $request ) {
945        $suggested_addon = self::get_storage_addon_upsell_slug(
946            $request['storage_size'],
947            $request['storage_limit']
948        );
949
950        $addons_size_text_map = array(
951            'jetpack_backup_addon_storage_10gb_monthly'  => '10GB',
952            'jetpack_backup_addon_storage_100gb_monthly' => '100GB',
953            'jetpack_backup_addon_storage_1tb_monthly'   => '1TB',
954        );
955
956        // Fetch addon storage price information
957        $pricing_info = Wpcom_Products::get_product_pricing( $suggested_addon );
958
959        // Response
960        $response = array(
961            'slug'      => $suggested_addon,
962            'size_text' => $addons_size_text_map[ $suggested_addon ],
963            'pricing'   => $pricing_info,
964        );
965
966        return rest_ensure_response( $response );
967    }
968
969    /**
970     * Enqueue a new backup on demand
971     *
972     * @return \WP_REST_Response|WP_Error The enqueue result, or a WP_Error if WordPress.com could not be reached.
973     */
974    public static function enqueue_backup() {
975        $blog_id  = Jetpack_Options::get_option( 'id' );
976        $endpoint = sprintf( '/sites/%d/rewind/backups/enqueue', $blog_id );
977
978        $response = Client::wpcom_json_api_request_as_user(
979            $endpoint,
980            'v2',
981            array(
982                'method' => 'POST',
983            ),
984            null,
985            'wpcom'
986        );
987
988        $response_code = (int) wp_remote_retrieve_response_code( $response );
989
990        if ( 200 !== $response_code ) {
991            return self::get_failed_fetch_error( $response_code );
992        }
993
994        return rest_ensure_response(
995            json_decode( $response['body'], true )
996        );
997    }
998
999    /**
1000     * Get site backup schedule time
1001     *
1002     * @return \WP_REST_Response|WP_Error The backup schedule time, or a WP_Error if WordPress.com could not be reached.
1003     */
1004    public static function get_site_backup_schedule_time() {
1005        $blog_id = Jetpack_Options::get_option( 'id' );
1006
1007        $response = Client::wpcom_json_api_request_as_user(
1008            '/sites/' . $blog_id . '/rewind/scheduled',
1009            'v2',
1010            array(),
1011            null,
1012            'wpcom'
1013        );
1014
1015        $response_code = (int) wp_remote_retrieve_response_code( $response );
1016
1017        if ( 200 !== $response_code ) {
1018            return self::get_failed_fetch_error( $response_code );
1019        }
1020
1021        return rest_ensure_response(
1022            json_decode( $response['body'], true )
1023        );
1024    }
1025
1026    /**
1027     * Removes plugin from the connection manager
1028     * If it's the last plugin using the connection, the site will be disconnected.
1029     *
1030     * @access public
1031     * @static
1032     */
1033    public static function plugin_deactivation() {
1034        $manager = new Connection_Manager( 'jetpack-backup' );
1035        $manager->remove_connection();
1036    }
1037
1038    /**
1039     * Load wp-build when modernization is enabled on the Backup admin page.
1040     *
1041     * @return void
1042     */
1043    public static function maybe_load_wp_build() {
1044        if ( ! self::is_modernized() || ! self::is_backup_admin_request() ) {
1045            return;
1046        }
1047
1048        self::load_wp_build();
1049
1050        // wp-build registers standalone modules (e.g. the init module) on
1051        // wp_default_scripts, which has already fired by admin_menu. Register them
1052        // directly so the init module makes it into the import map.
1053        if ( function_exists( 'jetpack_backup_register_script_modules' ) ) {
1054            jetpack_backup_register_script_modules(); // @phan-suppress-current-line PhanUndeclaredFunction -- Checked with function_exists(); defined in the generated build/modules.php, which Phan excludes.
1055        }
1056
1057        add_action( 'current_screen', array( __CLASS__, 'alias_screen_id_for_wp_build' ) );
1058        add_action( 'admin_print_scripts', array( __CLASS__, 'render_connection_initial_state' ), 1 );
1059    }
1060
1061    /**
1062     * Emit `window.JP_CONNECTION_INITIAL_STATE` inline on the modernized
1063     * Backup admin page.
1064     *
1065     * The modernized enqueue path short-circuits before the legacy
1066     * `Connection_Initial_State::render_script()` call, so without this
1067     * the React `<Gates>` component never sees the connection state and
1068     * sits on its loading skeleton forever. We emit the same JS payload
1069     * the legacy path emits, just outside of a registered script handle
1070     * (wp-build's handles aren't reliable here, and the global is
1071     * page-scoped — any tag setting it works).
1072     *
1073     * @return void
1074     */
1075    public static function render_connection_initial_state() {
1076        echo '<script id="jetpack-backup-connection-initial-state">'
1077            . Connection_Initial_State::render() // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- render() returns pre-escaped JSON.
1078            . '</script>';
1079    }
1080
1081    /**
1082     * Load the wp-build entry file and register its polyfills.
1083     *
1084     * Only called on `?page=jetpack-backup` admin requests when the
1085     * modernization filter is enabled. Keeps wp-build off every other request.
1086     *
1087     * @return void
1088     */
1089    private static function load_wp_build() {
1090        $build_index = dirname( __DIR__ ) . '/build/build.php';
1091
1092        if ( ! file_exists( $build_index ) ) {
1093            return;
1094        }
1095
1096        require_once $build_index;
1097
1098        \Automattic\Jetpack\WP_Build_Polyfills\WP_Build_Polyfills::register(
1099            'jetpack-backup',
1100            array_merge(
1101                \Automattic\Jetpack\WP_Build_Polyfills\WP_Build_Polyfills::SCRIPT_HANDLES,
1102                \Automattic\Jetpack\WP_Build_Polyfills\WP_Build_Polyfills::MODULE_IDS
1103            )
1104        );
1105    }
1106
1107    /**
1108     * Alias the current screen ID to satisfy wp-build's auto-generated enqueue check.
1109     *
1110     * Wp-build's `<page>-wp-admin` enqueue callback enqueues only when the screen ID
1111     * matches the wp-build page slug (`jetpack-backup-dashboard`). Our WP-admin
1112     * menu slug stays `jetpack-backup`, so we mutate the screen object in place
1113     * to make the check pass without changing the user-facing URL.
1114     *
1115     * Hooked only when modernization is on AND we're on the Backup admin page,
1116     * so this never affects any other request.
1117     *
1118     * @param \WP_Screen|null $screen The current screen object (passed by WP).
1119     * @return void
1120     */
1121    public static function alias_screen_id_for_wp_build( $screen ) {
1122        if ( ! is_object( $screen ) ) {
1123            return;
1124        }
1125
1126        $screen->id = 'jetpack-backup-dashboard';
1127    }
1128
1129    /**
1130     * Returns true when the wp-build modernization filter is enabled.
1131     *
1132     * @since 4.3.14 Changed from private to public; the REST bridges gate their route registration on it.
1133     *
1134     * @return bool
1135     */
1136    public static function is_modernized() {
1137        return (bool) apply_filters( self::MODERNIZATION_FILTER, false );
1138    }
1139
1140    /**
1141     * Returns true when the modernization filter is on AND the wp-build dashboard loaded.
1142     *
1143     * `build/` is gitignored, so the render function is absent in any unbuilt checkout
1144     * and in any release whose wp-build step failed. Every consumer of the modernized
1145     * surface has to agree on this, or the menu falls back to the legacy page while the
1146     * enqueue path skips the legacy script — an empty div with no JS.
1147     *
1148     * Only meaningful once `maybe_load_wp_build()` has run. It is hooked on `admin_menu`
1149     * at the same priority as `add_wp_admin_submenu()`, so registration order — not
1150     * priority — is what keeps it first. Do not reorder those two `add_action()` calls.
1151     *
1152     * @return bool
1153     */
1154    private static function is_wp_build_dashboard_active() {
1155        return self::is_modernized() && function_exists( 'jetpack_backup_jetpack_backup_dashboard_wp_admin_render_page' );
1156    }
1157
1158    /**
1159     * Returns true when the current request targets the Backup admin page.
1160     *
1161     * Used to scope wp-build loading to the one page that needs it. The
1162     * `$_GET['page']` value is populated by wp-admin/admin.php before any of
1163     * our hooks fire, so this check is reliable from `initialize()` onwards.
1164     *
1165     * @return bool
1166     */
1167    private static function is_backup_admin_request() {
1168        if ( ! is_admin() || ! isset( $_GET['page'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
1169            return false;
1170        }
1171
1172        return sanitize_text_field( wp_unslash( $_GET['page'] ) ) === self::JETPACK_BACKUP_SLUG; // phpcs:ignore WordPress.Security.NonceVerification.Recommended
1173    }
1174}