Add the new `/orders/{id}/actions` endpoint (#52050)

* Add new /orders/{id}/details endpoint first version

* Add tests for the OrderDetailsRestController

* Fix lint errors and service provider

* Add changefile(s) from automation for the following project(s): woocommerce

* Update note to mention it was created via a REST API request

* Document the original actions and reference them from the endpoint

* Refactor the endpoint to be `/actions`

* Add changefile(s) from automation for the following project(s): woocommerce

* Add back loading payment gateway and shipping classes

* Refactor endpoint to be `actions/send_order_details`

* Address feedback: improve error message and note

---------

Co-authored-by: github-actions <github-actions@github.com>

plugins/woocommerce/changelog/52050-51797-new-receipts-endpoint

@@ -0,0 +1,4 @@
+Significance: minor
+Type: add
+
+Add the new `POST /orders/{id}/actions` endpoint to allow re-sending the order details to customers.

plugins/woocommerce/includes/admin/meta-boxes/class-wc-meta-box-order-actions.php

@@ -131,6 +131,11 @@ class WC_Meta_Box_Order_Actions {
 			$action = wc_clean( wp_unslash( $_POST['wc_order_action'] ) ); // @codingStandardsIgnoreLine
 
 			if ( 'send_order_details' === $action ) {
+				/**
+				 * Fires before an order email is resent.
+				 *
+				 * @since 1.0.0
+				 */
 				do_action( 'woocommerce_before_resend_order_emails', $order, 'customer_invoice' );
 
 				// Send the customer invoice email.
@@ -141,6 +146,11 @@ class WC_Meta_Box_Order_Actions {
 				// Note the event.
 				$order->add_order_note( __( 'Order details manually sent to customer.', 'woocommerce' ), false, true );
 
+				/**
+				 * Fires after an order email has been resent.
+				 *
+				 * @since 1.0.0
+				 */
 				do_action( 'woocommerce_after_resend_order_email', $order, 'customer_invoice' );
 
 				// Change the post saved message.

plugins/woocommerce/src/Internal/DependencyManagement/ServiceProviders/OrdersControllersServiceProvider.php

@@ -7,12 +7,13 @@ namespace Automattic\WooCommerce\Internal\DependencyManagement\ServiceProviders;
 
 use Automattic\WooCommerce\Internal\DependencyManagement\AbstractServiceProvider;
 use Automattic\WooCommerce\Internal\Orders\CouponsController;
+use Automattic\WooCommerce\Internal\Orders\OrderActionsRestController;
 use Automattic\WooCommerce\Internal\Orders\TaxesController;
 
 /**
  * Service provider for the orders controller classes in the Automattic\WooCommerce\Internal\Orders namespace.
  */
-class OrdersControllersServiceProvider extends AbstractServiceProvider {
+class OrdersControllersServiceProvider extends AbstractInterfaceServiceProvider {
 
 	/**
 	 * The classes/interfaces that are serviced by this service provider.
@@ -22,6 +23,7 @@ class OrdersControllersServiceProvider extends AbstractServiceProvider {
 	protected $provides = array(
 		CouponsController::class,
 		TaxesController::class,
+		OrderActionsRestController::class,
 	);
 
 	/**
@@ -30,5 +32,6 @@ class OrdersControllersServiceProvider extends AbstractServiceProvider {
 	public function register() {
 		$this->share( CouponsController::class );
 		$this->share( TaxesController::class );
+		$this->share_with_implements_tags( OrderActionsRestController::class );
 	}
 }

plugins/woocommerce/src/Internal/Orders/OrderActionsRestController.php

@@ -0,0 +1,135 @@
+<?php
+declare( strict_types=1 );
+
+namespace Automattic\WooCommerce\Internal\Orders;
+
+use Automattic\WooCommerce\Internal\Traits\AccessiblePrivateMethods;
+use Automattic\WooCommerce\Internal\RestApiControllerBase;
+use WP_Error;
+use WP_REST_Request;
+
+/**
+ * Controller for the REST endpoint to run actions on orders.
+ *
+ * This first version only supports sending the order details to the customer (`send_order_details`).
+ */
+class OrderActionsRestController extends RestApiControllerBase {
+	use AccessiblePrivateMethods;
+
+	/**
+	 * Get the WooCommerce REST API namespace for the class.
+	 *
+	 * @return string
+	 */
+	protected function get_rest_api_namespace(): string {
+		return 'order-actions';
+	}
+
+	/**
+	 * Register the REST API endpoints handled by this controller.
+	 */
+	public function register_routes() {
+		register_rest_route(
+			$this->route_namespace,
+			'/orders/(?P<id>[\d]+)/actions/send_order_details',
+			array(
+				array(
+					'methods'             => \WP_REST_Server::CREATABLE,
+					'callback'            => fn( $request ) => $this->run( $request, 'send_order_details' ),
+					'permission_callback' => fn( $request ) => $this->check_permissions( $request ),
+					'args'                => $this->get_args_for_order_actions(),
+					'schema'              => $this->get_schema_for_order_actions(),
+				),
+			)
+		);
+	}
+
+	/**
+	 * Permission check for REST API endpoint.
+	 *
+	 * @param WP_REST_Request $request The request for which the permission is checked.
+	 * @return bool|WP_Error True if the current user has the capability, otherwise a WP_Error object.
+	 */
+	private function check_permissions( WP_REST_Request $request ) {
+		$order_id = $request->get_param( 'id' );
+		$order    = wc_get_order( $order_id );
+
+		if ( ! $order ) {
+			return new WP_Error( 'woocommerce_rest_not_found', __( 'Order not found', 'woocommerce' ), array( 'status' => 404 ) );
+		}
+
+		return $this->check_permission( $request, 'read_shop_order', $order_id );
+	}
+
+	/**
+	 * Get the accepted arguments for the POST request.
+	 *
+	 * @return array[]
+	 */
+	private function get_args_for_order_actions(): array {
+		return array(
+			'id' => array(
+				'description' => __( 'Unique identifier of the order.', 'woocommerce' ),
+				'type'        => 'integer',
+				'context'     => array( 'view', 'edit' ),
+				'readonly'    => true,
+			),
+		);
+	}
+
+	/**
+	 * Get the schema for both the GET and the POST requests.
+	 *
+	 * @return array[]
+	 */
+	private function get_schema_for_order_actions(): array {
+		$schema['properties'] = array(
+			'message' => array(
+				'description' => __( 'A message indicating that the action completed successfully.', 'woocommerce' ),
+				'type'        => 'string',
+				'context'     => array( 'view', 'edit' ),
+				'readonly'    => true,
+			),
+		);
+		return $schema;
+	}
+
+	/**
+	 * Handle the POST /orders/{id}/actions/send_order_details.
+	 *
+	 * @param WP_REST_Request $request The received request.
+	 * @return array|WP_Error Request response or an error.
+	 */
+	public function send_order_details( WP_REST_Request $request ) {
+		$order_id = $request->get_param( 'id' );
+		$order    = wc_get_order( $order_id );
+		if ( ! $order ) {
+			return new WP_Error( 'woocommerce_rest_invalid_order', __( 'Invalid order ID.', 'woocommerce' ), array( 'status' => 404 ) );
+		}
+
+		// phpcs:disable WooCommerce.Commenting.CommentHooks.MissingSinceComment
+		/** This action is documented in includes/admin/meta-boxes/class-wc-meta-box-order-actions.php */
+		do_action( 'woocommerce_before_resend_order_emails', $order, 'customer_invoice' );
+
+		WC()->payment_gateways();
+		WC()->shipping();
+		WC()->mailer()->customer_invoice( $order );
+
+		$user_agent = esc_html( $request->get_header( 'User-Agent' ) );
+		$note       = sprintf(
+			// translators: %1$s is the customer email, %2$s is the user agent that requested the action.
+			esc_html__( 'Order details sent to %1$s, via %2$s.', 'woocommerce' ),
+			esc_html( $order->get_billing_email() ),
+			$user_agent ? $user_agent : 'REST API'
+		);
+		$order->add_order_note( $note, false, true );
+
+		// phpcs:disable WooCommerce.Commenting.CommentHooks.MissingSinceComment
+		/** This action is documented in includes/admin/meta-boxes/class-wc-meta-box-order-actions.php */
+		do_action( 'woocommerce_after_resend_order_email', $order, 'customer_invoice' );
+
+		return array(
+			'message' => __( 'Order details email sent to customer.', 'woocommerce' ),
+		);
+	}
+}

plugins/woocommerce/tests/php/src/Internal/Orders/OrderActionsRestControllerTest.php

@@ -0,0 +1,96 @@
+<?php
+declare( strict_types=1 );
+
+namespace Automattic\WooCommerce\Tests\Internal\Orders;
+
+use Automattic\WooCommerce\Internal\Orders\OrderActionsRestController;
+use WC_REST_Unit_Test_Case;
+use WP_REST_Request;
+
+/**
+ * OrderActionsRestController API controller test.
+ *
+ * @class OrderActionsRestController
+ */
+class OrderActionsRestControllerTest extends WC_REST_Unit_Test_Case {
+	/**
+	 * @var OrderActionsRestController
+	 */
+	protected $controller;
+
+	/**
+	 * @var int User ID.
+	 */
+	private $user;
+
+	/**
+	 * Set up test.
+	 */
+	public function setUp(): void {
+		parent::setUp();
+
+		$this->controller = new OrderActionsRestController();
+		$this->controller->register_routes();
+
+		$this->user = $this->factory->user->create( array( 'role' => 'shop_manager' ) );
+	}
+
+	/**
+	 * Test sending order details email.
+	 */
+	public function test_send_order_details() {
+		$order = wc_create_order();
+		$order->set_billing_email( 'customer@email.com' );
+		$order->save();
+
+		wp_set_current_user( $this->user );
+
+		$request = new WP_REST_Request( 'POST', '/wc/v3/orders/' . $order->get_id() . '/actions/send_order_details' );
+		$request->add_header( 'User-Agent', 'some app' );
+
+		$response = $this->server->dispatch( $request );
+
+		$this->assertEquals( 200, $response->get_status() );
+
+		$data = $response->get_data();
+		$this->assertArrayHasKey( 'message', $data );
+		$this->assertEquals( 'Order details email sent to customer.', $data['message'] );
+
+		$notes = wc_get_order_notes( array( 'order_id' => $order->get_id() ) );
+		$this->assertCount( 1, $notes );
+		$this->assertEquals( 'Order details sent to customer@email.com, via some app.', $notes[0]->content );
+	}
+
+	/**
+	 * Test sending order details email for a non-existent order.
+	 */
+	public function test_send_order_details_with_non_existent_order() {
+		wp_set_current_user( $this->user );
+
+		$request  = new WP_REST_Request( 'POST', '/wc/v3/orders/999/actions/send_order_details' );
+		$response = $this->server->dispatch( $request );
+
+		$this->assertEquals( 404, $response->get_status() );
+
+		$data = $response->get_data();
+		$this->assertEquals( 'woocommerce_rest_not_found', $data['code'] );
+		$this->assertEquals( 'Order not found', $data['message'] );
+	}
+
+	/**
+	 * Test sending order details email without proper permissions.
+	 */
+	public function test_send_order_details_without_permission() {
+		$order = wc_create_order();
+
+		// Use a customer user who shouldn't have permission.
+		$customer = $this->factory->user->create( array( 'role' => 'customer' ) );
+
+		wp_set_current_user( $customer );
+
+		$request  = new WP_REST_Request( 'POST', '/wc/v3/orders/' . $order->get_id() . '/actions/send_order_details' );
+		$response = $this->server->dispatch( $request );
+
+		$this->assertEquals( 403, $response->get_status() );
+	}
+}