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<?php |
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/** |
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* WCPOS REST controller registry. |
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* |
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* @package WCPOS\WooCommercePOS\API |
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*/ |
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|
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namespace WCPOS\WooCommercePOS\API; |
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|
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use WCPOS\WooCommercePOS\Logger; |
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|
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/** |
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* Owns both controller maps, their instances, route attribution and classification merge. |
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* |
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* The v2 service map is the v2-native services plus every v1 entry that serves |
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* wcpos/v1 except the nine frozen data controllers (#544); the registry stamps |
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* wcpos/v2 on each promoted instance. A derived replacement that registers nothing |
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* under wcpos/v2 leaves the lane to the core service, as the hand-kept map did. |
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* Attribution takes the tail of the server's route table after each registration, |
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* so callback shape and namespace are irrelevant. The 'v2-' registry key prefix is |
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* internal, not a route namespace. |
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*/ |
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final class Controller_Registry { |
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/** The v1 data controllers the sync surface replaced. Never promoted to wcpos/v2 (#544). */ |
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public const FROZEN_DATA_KEYS = array( 'products', 'product_variations', 'orders', 'customers', 'product_tags', 'product_categories', 'product_brands', 'coupons', 'taxes' ); |
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|
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/** The frozen lane; every v1 class declares it itself. */ |
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public const V1_NAMESPACE = 'wcpos/v1'; |
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|
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/** Namespace every entry of the v2 map is stamped with. */ |
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public const V2_NAMESPACE = 'wcpos/v2'; |
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|
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/** |
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* Gate exemptions for a filtered replacement of these three services that |
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* predates `wcpos_route_classifications()` (the gate carried them itself |
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* before 1.10.0). Applied under whichever lane the replacement registers on, |
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* so a legacy auth replacement that now reaches wcpos/v2 keeps anonymous |
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* login there too. Not a list to extend: a service declares its own. |
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* |
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* @var array<string, array<string, string[]>> Map key → classification → route suffixes. |
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*/ |
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private const LEGACY_CLASSIFICATIONS = array( |
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'auth' => array( 'public' => array( '/auth/test', '/auth/refresh' ) ), |
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'print_jobs' => array( 'printer_token' => array( '/print-jobs/cloudprnt', '/print-jobs/epson-sdp' ) ), |
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'receipts' => array( 'permission_error_passthrough' => array( '/receipts/' ) ), |
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); |
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|
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/** |
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* Route pattern to registry key. |
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* |
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* @var array<string, string> |
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*/ |
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private array $routes = array(); |
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|
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/** |
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* Registry key to controller instance. |
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* |
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* @var array<string, object> |
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*/ |
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private array $controllers = array(); |
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|
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/** |
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* Get the filtered v1 controller map. |
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* |
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* @return array<string, class-string> The v1 map after woocommerce_pos_rest_api_controllers. |
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*/ |
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public static function v1_map(): array { |
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/** |
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* Filter the list of controller classes used in the WCPOS REST API. |
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* |
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* This filter allows customizing or extending the set of controller classes that handle |
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* REST API routes for the WCPOS. By filtering these controllers, plugins can |
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* modify existing endpoints or add new controllers for additional functionality. |
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* Core legacy controllers use their versioned WCPOS\WooCommercePOS\API\V1 FQCNs. |
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* |
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* @since 1.5.0 |
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* |
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* @param array $controllers Associative array of controller identifiers to their corresponding class names. |
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* - 'auth' => Fully qualified name of the class handling authentication. |
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* - 'settings' => Fully qualified name of the class handling settings. |
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* - 'cashier' => Fully qualified name of the class handling cashier management. |
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* - 'products' => Fully qualified name of the class handling products. |
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* - 'product_variations' => Fully qualified name of the class handling product variations. |
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* - 'orders' => Fully qualified name of the class handling orders. |
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* - 'customers' => Fully qualified name of the class handling customers. |
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* - 'product_tags' => Fully qualified name of the class handling product tags. |
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* - 'product_categories' => Fully qualified name of the class handling product categories. |
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* - 'taxes' => Fully qualified name of the class handling taxes. |
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* - 'shipping_methods' => Fully qualified name of the class handling shipping methods. |
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* - 'tax_classes' => Fully qualified name of the class handling tax classes. |
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* - 'order_statuses' => Fully qualified name of the class handling order statuses. |
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*/ |
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return apply_filters( 'woocommerce_pos_rest_api_controllers', self::core_v1_map() ); |
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} |
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|
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/** |
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* The v1 map as this plugin ships it, before any filter. |
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* |
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* @return array<string, class-string> |
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*/ |
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public static function core_v1_map(): array { |
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return array( |
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// WCPOS rest api controllers. |
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'auth' => V1\Auth::class, |
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'settings' => V1\Settings::class, |
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'cashier' => V1\Cashier::class, |
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'templates' => V1\Templates_Controller::class, |
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'receipts' => V1\Receipts_Controller::class, |
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'print_jobs' => V1\Print_Jobs_Controller::class, |
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|
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// TODO: remove this? |
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'stores' => V1\Stores::class, |
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'extensions' => V1\Extensions::class, |
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'logs' => V1\Logs::class, |
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'payment_gateways' => V1\Payment_Gateways::class, |
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'gateway_bootstrap' => V1\Gateway_Bootstrap_Controller::class, |
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'checkout' => V1\Checkout_Controller::class, |
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|
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// extend WC REST API controllers. |
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'products' => V1\Products_Controller::class, |
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'product_variations' => V1\Product_Variations_Controller::class, |
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'orders' => V1\Orders_Controller::class, |
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'customers' => V1\Customers_Controller::class, |
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'product_tags' => V1\Product_Tags_Controller::class, |
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'product_categories' => V1\Product_Categories_Controller::class, |
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'product_brands' => V1\Product_Brands_Controller::class, |
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'coupons' => V1\Coupons_Controller::class, |
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'taxes' => V1\Taxes_Controller::class, |
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'shipping_methods' => V1\Shipping_Methods_Controller::class, |
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'tax_classes' => V1\Tax_Classes_Controller::class, |
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'order_statuses' => V1\Data_Order_Statuses_Controller::class, |
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); |
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} |
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|
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/** |
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* Promote shared services, add v2-native services, then apply the v2 filter. |
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* |
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* @param array<string, class-string> $v1 The v1 entries that serve wcpos/v1 (register() passes only those). |
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* @return array<string, class-string> The v2 map. |
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*/ |
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public static function v2_map( array $v1 ): array { |
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// The v2-native services come first, as they did in the hand-kept map, and win a key collision. |
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$natives = array( |
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'ping' => V2\Ping::class, |
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'echo_probe' => V2\Echo_Probe::class, |
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'site' => V2\Site::class, |
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'order_email' => V2\Order_Email_Controller::class, |
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); |
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$map = $natives + array_diff_key( $v1, array_flip( self::FROZEN_DATA_KEYS ) ); |
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|
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/** |
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* Filter the wcpos/v2 service map derived from v1 minus FROZEN_DATA_KEYS. |
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* |
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* This additive filter can add a v2-only service or replace a derived entry |
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* by key. Every entry is instantiated by the registry and stamped with |
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* wcpos/v2, so a replacement needs no $namespace override of its own. |
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* |
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* @since 1.10.0 |
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* @since 1.10.19 The map is derived; a v1 replacement now reaches v2 on its own. |
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* |
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* @param array $controllers Associative array of v2 service controller class names. |
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*/ |
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return apply_filters( 'woocommerce_pos_rest_api_v2_controllers', $map ); |
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} |
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|
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/** |
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* Instantiate, stamp, register and attribute every controller on both lanes; |
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* merge each controller's classifications. |
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* |
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* @param Route_Classifier $classifier Route permission-gate classifier. |
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*/ |
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public function register( Route_Classifier $classifier ): void { |
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$core = self::core_v1_map(); |
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$v1 = self::v1_map(); |
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|
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// Only an entry that serves wcpos/v1 is promoted: the v1 filter also carries |
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// the sync controllers, which are wcpos/v2-native and register there already. |
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$serves_v1 = array(); |
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foreach ( $v1 as $key => $class ) { |
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if ( self::under( $this->register_one( self::V1_NAMESPACE, $key, $class, $classifier ), self::V1_NAMESPACE ) ) { |
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$serves_v1[ $key ] = $class; |
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} |
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} |
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|
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foreach ( self::v2_map( $serves_v1 ) as $key => $class ) { |
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$routes = $this->register_one( self::V2_NAMESPACE, $key, $class, $classifier ); |
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// A derived v1 replacement (not a class the v2 filter chose) that registered |
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// nothing under wcpos/v2 — a class that hard-codes wcpos/v1, or a plain object |
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// with no namespace to stamp — leaves the lane to the core service, as the |
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// hand-kept map did. |
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$derived_replacement = isset( $serves_v1[ $key ], $core[ $key ] ) && $serves_v1[ $key ] === $class && $core[ $key ] !== $class; |
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if ( $derived_replacement && ! self::under( $routes, self::V2_NAMESPACE ) ) { |
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$this->register_one( self::V2_NAMESPACE, $key, $core[ $key ], $classifier ); |
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} |
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} |
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} |
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|
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/** |
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* Instantiate, stamp, register and attribute one controller on one lane. |
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* |
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* @param string $lane The lane the map belongs to. |
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* @param string $key The map key. |
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* @param string $class The controller class. |
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* @param Route_Classifier $classifier Route permission-gate classifier. |
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* |
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* @return string[] The route patterns this registration added, in any namespace. |
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*/ |
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private function register_one( string $lane, string $key, string $class, Route_Classifier $classifier ): array { |
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if ( ! class_exists( $class ) ) { |
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return array(); |
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} |
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$controller = new $class(); |
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$registry_key = $key; |
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if ( self::V2_NAMESPACE === $lane ) { |
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$registry_key = 'v2-' . $key; |
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// Any controller that keeps a namespace is stamped, not only a |
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// WP_REST_Controller subclass: the v2 map takes a class name, so a |
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// controller written against WP_REST_Server directly is as entitled to |
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// the promotion as one that extends core's base. |
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foreach ( self::namespace_scopes( $controller ) as $scope ) { |
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self::stamp_namespace( $controller, $scope, $lane ); |
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} |
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} |
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$this->controllers[ $registry_key ] = $controller; |
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|
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// WordPress appends a new route pattern to the end of its table, so the |
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// patterns added since the count taken before registration are this |
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// controller's, whatever namespace they are under and whatever shape their |
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// callbacks take. A pattern registered twice keeps its first owner. The |
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// index route WordPress adds for a namespace's first pattern is the |
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// server's, not the controller's. |
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$server = rest_get_server(); |
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$from = \count( self::endpoints( $server ) ); |
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$controller->register_routes(); |
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$routes = array(); |
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foreach ( \array_slice( self::endpoints( $server ), $from, null, true ) as $route => $entry ) { |
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if ( isset( $entry['namespace'] ) && '/' . $entry['namespace'] === $route ) { |
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continue; |
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} |
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$this->routes[ $route ] = $registry_key; |
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$routes[] = $route; |
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} |
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|
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if ( method_exists( $controller, 'wcpos_route_classifications' ) ) { |
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$classifier->merge( $controller->wcpos_route_classifications() ); |
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} elseif ( isset( self::LEGACY_CLASSIFICATIONS[ $key ] ) ) { |
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$classifier->merge( self::legacy_classifications( $key, $lane ) ); |
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} |
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|
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return $routes; |
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} |
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|
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/** |
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* The server's raw route table, in registration order. |
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* |
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* `WP_REST_Server::$endpoints` is protected and `get_routes()` is its only |
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* reader, but that applies `rest_endpoints` and parses every handler on each |
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* call: measured 2026-09-18, one call per controller made API construction |
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* six times slower. Reading the table itself costs nothing (copy-on-write). |
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* |
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* @param \WP_REST_Server $server The REST server. |
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* |
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* @return array<string, array> |
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*/ |
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private static function endpoints( \WP_REST_Server $server ): array { |
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return \Closure::bind( |
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function (): array { |
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return $this->endpoints; |
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}, |
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$server, |
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$server |
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)(); |
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} |
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|
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/** |
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* Whether any of the routes is under the lane. |
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* |
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* @param string[] $routes Route patterns. |
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* @param string $lane Namespace. |
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*/ |
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private static function under( array $routes, string $lane ): bool { |
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foreach ( $routes as $route ) { |
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if ( 0 === strpos( $route, '/' . $lane . '/' ) ) { |
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return true; |
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} |
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} |
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|
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return false; |
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} |
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|
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/** |
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* The historical gate exemptions under one lane's namespace. |
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* |
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* @param string $key A key of LEGACY_CLASSIFICATIONS. |
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* @param string $namespace The lane. |
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* |
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* @return array<string, string[]> Classification → routes. |
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*/ |
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private static function legacy_classifications( string $key, string $namespace ): array { |
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$classifications = array(); |
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foreach ( self::LEGACY_CLASSIFICATIONS[ $key ] as $classification => $suffixes ) { |
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foreach ( $suffixes as $suffix ) { |
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$classifications[ $classification ][] = '/' . $namespace . $suffix; |
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} |
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} |
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|
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return $classifications; |
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} |
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|
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/** |
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* Find the controller that registered a route. |
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* |
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* @param string $route Route pattern. |
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* @return object|null Controller, or null when no WCPOS controller registered it. |
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*/ |
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public function controller_for_route( string $route ): ?object { |
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$key = $this->routes()[ $route ] ?? null; |
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return $this->controllers()[ $key ] ?? null; |
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} |
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|
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/** |
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* Get route attribution. |
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* |
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* @return array<string, string> Route pattern to registry key (test seam). |
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*/ |
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public function routes(): array { |
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return $this->routes; |
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} |
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|
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/** |
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* Get registered instances. |
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* |
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* @return array<string, object> V1 keys and 'v2-' plus v2 keys (test seam). |
| 334 |
*/ |
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public function controllers(): array { |
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return $this->controllers; |
| 337 |
} |
| 338 |
|
| 339 |
/** |
| 340 |
* Every scope holding a namespace slot on this controller, outermost first. |
| 341 |
* |
| 342 |
* The ancestry is walked rather than asked, because property_exists() answers |
| 343 |
* false for a property a BASE class keeps private, and a private declaration |
| 344 |
* is a slot of its own: a subclass that declares its own namespace alongside |
| 345 |
* one the base keeps private has two, and an inherited register_routes() reads |
| 346 |
* the base's. Writing from the wrong scope would quietly add a dynamic |
| 347 |
* property while the controller went on reading the old value, so each slot is |
| 348 |
* written where it lives and all of them are written. |
| 349 |
* |
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* A namespace a constructor assigned without declaring the property belongs to |
| 351 |
* no class, but the instance holds it and the controller reads it, so the |
| 352 |
* runtime class is the scope for that one. |
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* |
| 354 |
* A controller that keeps no namespace at all has nothing to stamp and |
| 355 |
* registers where its own register_routes() says, as it did before the map was |
| 356 |
* derived. |
| 357 |
* |
| 358 |
* @param object $controller Controller instance. |
| 359 |
* |
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* @return string[] Class names, empty when the controller holds no namespace. |
| 361 |
*/ |
| 362 |
private static function namespace_scopes( object $controller ): array { |
| 363 |
$scopes = array(); |
| 364 |
|
| 365 |
for ( $class = new \ReflectionClass( $controller ); false !== $class; $class = $class->getParentClass() ) { |
| 366 |
if ( ! $class->hasProperty( 'namespace' ) ) { |
| 367 |
continue; |
| 368 |
} |
| 369 |
// Ask where the slot this class can see actually lives, rather than |
| 370 |
// assuming this class owns it: an inherited protected property is ONE |
| 371 |
// slot visible from every descendant, so naming each descendant would |
| 372 |
// write it several times — harmless for a plain property, not for one |
| 373 |
// with a set hook. A private declaration a subclass shadows really is |
| 374 |
// a second slot, and this reports it as such. |
| 375 |
$scopes[] = $class->getProperty( 'namespace' )->getDeclaringClass()->getName(); |
| 376 |
} |
| 377 |
|
| 378 |
// A namespace a constructor assigned without declaring the property belongs |
| 379 |
// to no class, but the instance holds it and the controller reads it. It |
| 380 |
// can also sit on top of a private one a base declares, so this is asked |
| 381 |
// whether or not the walk above found anything. The property list is read |
| 382 |
// rather than hasProperty(), which answers false for exactly this case |
| 383 |
// (measured on PHP 8.3) while getProperties() still returns the property. |
| 384 |
foreach ( ( new \ReflectionObject( $controller ) )->getProperties() as $property ) { |
| 385 |
if ( 'namespace' === $property->getName() && ! $property->isDefault() ) { |
| 386 |
$scopes[] = \get_class( $controller ); |
| 387 |
break; |
| 388 |
} |
| 389 |
} |
| 390 |
|
| 391 |
return array_values( array_unique( $scopes ) ); |
| 392 |
} |
| 393 |
|
| 394 |
/** |
| 395 |
* WP_REST_Controller::$namespace is protected with no setter (Paul, 2026-09-18: stamp |
| 396 |
* every v2 entry here rather than ask each class to opt in, so a v1 replacement from |
| 397 |
* Pro or a third party reaches wcpos/v2 with no work on its side). |
| 398 |
* |
| 399 |
* @param object $controller Controller instance. |
| 400 |
* @param string $scope The class that declares the property, so a namespace |
| 401 |
* a base class keeps private is written where it lives. |
| 402 |
* @param string $namespace Target namespace. |
| 403 |
*/ |
| 404 |
private static function stamp_namespace( object $controller, string $scope, string $namespace ): void { |
| 405 |
try { |
| 406 |
\Closure::bind( |
| 407 |
function () use ( $namespace ): void { |
| 408 |
$this->namespace = $namespace; |
| 409 |
}, |
| 410 |
$controller, |
| 411 |
$scope |
| 412 |
)(); |
| 413 |
} catch ( \Error $e ) { |
| 414 |
// The controller declared its namespace readonly, so it has already |
| 415 |
// decided it and PHP refuses the write even from inside the class. |
| 416 |
// Left alone it registers where its own register_routes() says, as it |
| 417 |
// did before the map was derived; rethrowing would abort rest_api_init |
| 418 |
// and take every WCPOS route with it. The bound closure does nothing |
| 419 |
// else, so there is no other Error this can swallow. |
| 420 |
Logger::log( 'wcpos/v2 promotion left ' . \get_class( $controller ) . ' on its own namespace: ' . $e->getMessage() ); |
| 421 |
} |
| 422 |
} |
| 423 |
} |
| 424 |
|
