woocommerce/includes/rest-api/Controllers/Version2/class-wc-rest-tax-classes-v2-controller.php

<?php
/**
 * REST API Tax Classes controller
 *
 * Handles requests to the /taxes/classes endpoint.
 *
 * @package WooCommerce\RestApi
 * @since   2.6.0
 */

defined( 'ABSPATH' ) || exit;

/**
 * REST API Tax Classes controller class.
 *
 * @package WooCommerce\RestApi
 * @extends WC_REST_Tax_Classes_V1_Controller
 */
class WC_REST_Tax_Classes_V2_Controller extends WC_REST_Tax_Classes_V1_Controller {

	/**
	 * Endpoint namespace.
	 *
	 * @var string
	 */
	protected $namespace = 'wc/v2';

	/**
	 * Register the routes for tax classes.
	 */
	public function register_routes() {
		register_rest_route(
			$this->namespace,
			'/' . $this->rest_base,
			array(
				array(
					'methods'             => WP_REST_Server::READABLE,
					'callback'            => array( $this, 'get_items' ),
					'permission_callback' => array( $this, 'get_items_permissions_check' ),
					'args'                => $this->get_collection_params(),
				),
				array(
					'methods'             => WP_REST_Server::CREATABLE,
					'callback'            => array( $this, 'create_item' ),
					'permission_callback' => array( $this, 'create_item_permissions_check' ),
					'args'                => $this->get_endpoint_args_for_item_schema( WP_REST_Server::CREATABLE ),
				),
				'schema' => array( $this, 'get_public_item_schema' ),
			)
		);

		register_rest_route(
			$this->namespace,
			'/' . $this->rest_base . '/(?P<slug>\w[\w\s\-]*)',
			array(
				'args' => array(
					'slug' => array(
						'description' => __( 'Unique slug for the resource.', 'woocommerce' ),
						'type'        => 'string',
					),
				),
				array(
					'methods'             => WP_REST_Server::READABLE,
					'callback'            => array( $this, 'get_item' ),
					'permission_callback' => array( $this, 'get_items_permissions_check' ),
				),
				array(
					'methods'             => WP_REST_Server::DELETABLE,
					'callback'            => array( $this, 'delete_item' ),
					'permission_callback' => array( $this, 'delete_item_permissions_check' ),
					'args'                => array(
						'force' => array(
							'default'     => false,
							'type'        => 'boolean',
							'description' => __( 'Required to be true, as resource does not support trashing.', 'woocommerce' ),
						),
					),
				),
				'schema' => array( $this, 'get_public_item_schema' ),
			)
		);
	}

	/**
	 * Get one tax class.
	 *
	 * @param WP_REST_Request $request Request object.
	 * @return array
	 */
	public function get_item( $request ) {
		if ( 'standard' === $request['slug'] ) {
			$tax_class = array(
				'slug' => 'standard',
				'name' => __( 'Standard rate', 'woocommerce' ),
			);
		} else {
			$tax_class = WC_Tax::get_tax_class_by( 'slug', sanitize_title( $request['slug'] ) );
		}

		$data = array();
		if ( $tax_class ) {
			$class  = $this->prepare_item_for_response( $tax_class, $request );
			$class  = $this->prepare_response_for_collection( $class );
			$data[] = $class;
		}

		return rest_ensure_response( $data );
	}
}