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| 1 | <?php |
| 2 | /** |
| 3 | * Jetpack SEO — the visibility command center for WordPress sites. |
| 4 | * |
| 5 | * Gates the surface behind its feature flag and cohort, then wires the admin |
| 6 | * page ({@see Admin_Page}), the dashboard's REST reads ({@see Dashboard_Data}), |
| 7 | * the content-coverage cache invalidation ({@see Content_Coverage}), and the |
| 8 | * opt-in surface ({@see Surface_Visibility}). |
| 9 | * |
| 10 | * @package automattic/jetpack-seo-package |
| 11 | */ |
| 12 | |
| 13 | namespace Automattic\Jetpack\SEO; |
| 14 | |
| 15 | use Automattic\Jetpack\Modules; |
| 16 | |
| 17 | /** |
| 18 | * Boots the package and carries its cross-plugin contract: the feature flag, |
| 19 | * the script-data key, and the option names / visibility reads other plugins consume. |
| 20 | */ |
| 21 | class Initializer { |
| 22 | |
| 23 | /** |
| 24 | * Jetpack SEO package version. |
| 25 | * |
| 26 | * @var string |
| 27 | */ |
| 28 | const PACKAGE_VERSION = '0.6.0'; |
| 29 | |
| 30 | /** |
| 31 | * Filter name that gates the entire Jetpack SEO surface. |
| 32 | * |
| 33 | * When this filter returns true, the package registers its admin menu and |
| 34 | * loads the wp-build dashboard. Default false before release - when the |
| 35 | * filter is off the package registers no admin menu and no assets, and |
| 36 | * changes nothing about the existing Jetpack UI. |
| 37 | * |
| 38 | * @var string |
| 39 | */ |
| 40 | const FEATURE_FILTER = 'rsm_jetpack_seo'; |
| 41 | |
| 42 | /** |
| 43 | * Key under `window.JetpackScriptData` the React app reads its state from |
| 44 | * (`window.JetpackScriptData.seo`). Must match the JS-side reader in |
| 45 | * `_inc/data/get-overview.ts`. |
| 46 | */ |
| 47 | const SCRIPT_DATA_KEY = 'seo'; |
| 48 | |
| 49 | /** |
| 50 | * Option recording whether sitemap generation is enabled. |
| 51 | * |
| 52 | * Read in place of the standalone `sitemaps` module's active state. Module-active |
| 53 | * state is filtered against the modules present on disk, so once that module is |
| 54 | * removed it would read as inactive even for sites that had it on. A one-time |
| 55 | * migration in the Jetpack plugin seeds this option from the site's existing module |
| 56 | * state and keeps it in sync while the legacy module still exists. See |
| 57 | * `Jetpack::migrate_sitemaps_module_to_seo_option()`. |
| 58 | * |
| 59 | * @var string |
| 60 | */ |
| 61 | const SITEMAP_ENABLED_OPTION = 'jetpack_seo_sitemap_enabled'; |
| 62 | |
| 63 | /** |
| 64 | * Option recording whether canonical URLs are enabled. |
| 65 | * |
| 66 | * Read in place of the standalone `canonical-urls` module's active state. Module-active |
| 67 | * state is filtered against the modules present on disk, so once that module is |
| 68 | * removed it would read as inactive even for sites that had it on. A one-time |
| 69 | * migration in the Jetpack plugin seeds this option from the site's existing module |
| 70 | * state and keeps it in sync while the legacy module still exists. See |
| 71 | * `Jetpack::migrate_canonical_urls_module_to_seo_option()`. |
| 72 | * |
| 73 | * @var string |
| 74 | */ |
| 75 | const CANONICAL_ENABLED_OPTION = 'jetpack_seo_canonical_urls_enabled'; |
| 76 | |
| 77 | /** |
| 78 | * Option recording whether the Jetpack SEO surface is discoverable on this site. |
| 79 | * |
| 80 | * Gates whether the SEO admin menu registers on self-hosted sites. Seeded once by the |
| 81 | * Jetpack plugin on install/upgrade: fresh installs default to visible, existing |
| 82 | * installs default to hidden and opt in via the legacy Traffic page or My Jetpack. |
| 83 | * WordPress.com (Simple + Atomic) bypasses this option entirely and is always visible. |
| 84 | * Absent until seeded, in which case self-hosted defaults to hidden (the non-disruptive |
| 85 | * default). See {@see Surface_Visibility::is_visible()}. |
| 86 | * |
| 87 | * @var string |
| 88 | */ |
| 89 | const VISIBILITY_OPTION = 'jetpack_seo_surface_visible'; |
| 90 | |
| 91 | /** |
| 92 | * Whether the package has been initialized. |
| 93 | * |
| 94 | * @var bool |
| 95 | */ |
| 96 | private static $initialized = false; |
| 97 | |
| 98 | /** |
| 99 | * Initialize the package. |
| 100 | * |
| 101 | * Called from the Jetpack plugin's `late_initialization()` hook. |
| 102 | * |
| 103 | * @return void |
| 104 | */ |
| 105 | public static function init() { |
| 106 | if ( self::$initialized ) { |
| 107 | return; |
| 108 | } |
| 109 | self::$initialized = true; |
| 110 | |
| 111 | // Gate the entire SEO surface behind the feature flag. |
| 112 | if ( ! (bool) apply_filters( self::FEATURE_FILTER, false ) ) { |
| 113 | return; |
| 114 | } |
| 115 | |
| 116 | // The opt-in endpoint must be reachable even before the surface is visible, so |
| 117 | // existing self-hosted installs can switch to the new experience from the legacy |
| 118 | // Traffic page or My Jetpack (JETPACK-1700). Registered ahead of the cohort gate. |
| 119 | add_action( 'rest_api_init', array( Surface_Visibility::class, 'register_optin_route' ) ); |
| 120 | |
| 121 | // Expose opt-in availability to other admin surfaces (the legacy Traffic-page |
| 122 | // banner reads it via `@automattic/jetpack-script-data`). Hooked here — after the |
| 123 | // feature flag, before the cohort gate — so a still-hidden install gets the signal. |
| 124 | add_filter( 'jetpack_admin_js_script_data', array( Surface_Visibility::class, 'inject_optin_availability' ) ); |
| 125 | |
| 126 | // Discoverability cohort gate: the SEO surface is auto-discoverable for fresh |
| 127 | // installs and all WordPress.com sites; existing self-hosted installs opt in via |
| 128 | // the legacy Traffic page or My Jetpack (JETPACK-1700). Until it's visible we |
| 129 | // register nothing else here and let those opt-in surfaces drive discovery. |
| 130 | if ( ! self::is_seo_surface_visible() ) { |
| 131 | return; |
| 132 | } |
| 133 | |
| 134 | // The admin menu and app shell register whenever the surface is visible, even |
| 135 | // when the `seo-tools` module is inactive, so SEO stays discoverable and can be |
| 136 | // turned on from within the page itself (JETPACK-1700). When the module is off, |
| 137 | // the Overview renders only its "enable SEO tools" affordance. |
| 138 | // |
| 139 | // Priority 1: load the wp-build bundle (and define its render function) |
| 140 | // before `add_menu_item()` runs at the default priority and needs it. |
| 141 | add_action( 'admin_menu', array( Admin_Page::class, 'maybe_load_wp_build' ), 1 ); |
| 142 | add_action( 'admin_menu', array( Admin_Page::class, 'add_menu_item' ), 10 ); |
| 143 | |
| 144 | // Read-only REST routes the dashboard hydrates its initial state from. Preloaded |
| 145 | // into the page (see Admin_Page::inject_script_data) so a normal load resolves |
| 146 | // them with no request, and fetched by the app when that preload is missing or |
| 147 | // stale — so the dashboard recovers its data instead of dead-ending. Registered |
| 148 | // whenever the surface is visible (independent of the seo-tools module, like the |
| 149 | // Overview). |
| 150 | add_action( 'rest_api_init', array( Dashboard_Data::class, 'register_rest_reads' ) ); |
| 151 | |
| 152 | // Keep the Overview's cached content-coverage counts honest. Hooked here rather than |
| 153 | // alongside the admin surface above because posts are written from everywhere — the |
| 154 | // block editor (REST), the classic editor, wp-cli, cron, other plugins — and the |
| 155 | // cache has to be dropped wherever that happens, not just where it's read. |
| 156 | Content_Coverage::register_invalidation(); |
| 157 | |
| 158 | // The settings surface only comes online once SEO tools are active — there's |
| 159 | // nothing to configure while the module is off, so we don't register its REST |
| 160 | // endpoints until then. Expose the core `blog_public` option to the REST settings |
| 161 | // endpoint so the Settings tab can save search-engine visibility via |
| 162 | // `/wp/v2/settings` (the Jetpack settings endpoint only accepts Jetpack options). |
| 163 | // Writes are still capability-gated by the core settings controller. |
| 164 | if ( self::is_seo_tools_module_active() ) { |
| 165 | // Front-end JSON-LD schema output and author profile schema fields. |
| 166 | Schema_Builder::init(); |
| 167 | Author_Schema_Node::init(); |
| 168 | // GEO tab front-end behavior: the /llms.txt handler. Self-hooks a front-end |
| 169 | // action, so it no-ops off the front end and stays behind the same gates as |
| 170 | // the schema above. |
| 171 | Llms_Txt::init(); |
| 172 | // GEO tab front-end behavior: robots.txt directives for blocked AI crawlers. |
| 173 | // Self-hooks the `robots_txt` filter, so it stays inert off the front end. |
| 174 | Ai_Crawlers::init(); |
| 175 | add_action( 'rest_api_init', array( Dashboard_Data::class, 'register_rest_settings' ) ); |
| 176 | // Package-owned route for the site-level Schema settings (see the controller). |
| 177 | add_action( 'rest_api_init', array( Schema_Settings_Controller::class, 'register_routes' ) ); |
| 178 | } |
| 179 | |
| 180 | /** |
| 181 | * Fires after the Jetpack SEO package is initialized. |
| 182 | * |
| 183 | * @since 0.1.0 |
| 184 | */ |
| 185 | do_action( 'jetpack_seo_init' ); |
| 186 | } |
| 187 | |
| 188 | /** |
| 189 | * Whether the Jetpack SEO surface should be discoverable (admin menu registered). |
| 190 | * |
| 191 | * @return bool |
| 192 | */ |
| 193 | public static function is_seo_surface_visible() { |
| 194 | return Surface_Visibility::is_visible(); |
| 195 | } |
| 196 | |
| 197 | /** |
| 198 | * Whether to offer an existing install the chance to opt into the new SEO experience. |
| 199 | * |
| 200 | * @return bool |
| 201 | */ |
| 202 | public static function is_optin_available() { |
| 203 | return Surface_Visibility::is_optin_available(); |
| 204 | } |
| 205 | |
| 206 | /** |
| 207 | * Whether the `seo-tools` Jetpack module is currently active. |
| 208 | * |
| 209 | * @return bool |
| 210 | */ |
| 211 | private static function is_seo_tools_module_active() { |
| 212 | if ( ! class_exists( 'Automattic\\Jetpack\\Modules' ) ) { |
| 213 | return false; |
| 214 | } |
| 215 | return ( new Modules() )->is_active( 'seo-tools' ); |
| 216 | } |
| 217 | } |