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✏️ Editing: class-wc-rest-shipping-zone-locations-controller.php

<?php
/**
 * REST API Shipping Zone Locations controller
 *
 * Handles requests to the /shipping/zones/<id>/locations endpoint.
 *
 * @author   WooThemes
 * @category API
 * @package  WooCommerce/API
 * @since    3.0.0
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * REST API Shipping Zone Locations class.
 *
 * @package WooCommerce/API
 * @extends WC_REST_Shipping_Zones_Controller_Base
 */
class WC_REST_Shipping_Zone_Locations_Controller extends WC_REST_Shipping_Zones_Controller_Base {

/**
	 * Register the routes for Shipping Zone Locations.
	 */
	public function register_routes() {
		register_rest_route( $this->namespace, '/' . $this->rest_base . '/(?P<id>[\d]+)/locations', array(
			'args' => array(
				'id' => array(
					'description' => __( 'Unique ID for the resource.', 'woocommerce' ),
					'type'        => 'integer',
				),
			),
			array(
				'methods'             => WP_REST_Server::READABLE,
				'callback'            => array( $this, 'get_items' ),
				'permission_callback' => array( $this, 'get_items_permissions_check' ),
			),
			array(
				'methods'             => WP_REST_Server::EDITABLE,
				'callback'            => array( $this, 'update_items' ),
				'permission_callback' => array( $this, 'update_items_permissions_check' ),
				'args'                => $this->get_endpoint_args_for_item_schema( WP_REST_Server::EDITABLE ),
			),
			'schema' => array( $this, 'get_public_item_schema' ),
		) );
	}

/**
	 * Get all Shipping Zone Locations.
	 *
	 * @param WP_REST_Request $request
	 * @return WP_REST_Response|WP_Error
	 */
	public function get_items( $request ) {
		$zone = $this->get_zone( (int) $request['id'] );

if ( is_wp_error( $zone ) ) {
			return $zone;
		}

$locations = $zone->get_zone_locations();
		$data      = array();

foreach ( $locations as $location_obj ) {
			$location = $this->prepare_item_for_response( $location_obj, $request );
			$location = $this->prepare_response_for_collection( $location );
			$data[]   = $location;
		}

return rest_ensure_response( $data );
	}

/**
	 * Update all Shipping Zone Locations.
	 *
	 * @param WP_REST_Request $request
	 * @return WP_REST_Response|WP_Error
	 */
	public function update_items( $request ) {
		$zone = $this->get_zone( (int) $request['id'] );

if ( is_wp_error( $zone ) ) {
			return $zone;
		}

if ( 0 === $zone->get_id() ) {
			return new WP_Error( "woocommerce_rest_shipping_zone_locations_invalid_zone", __( 'The "locations not covered by your other zones" zone cannot be updated.', 'woocommerce' ), array( 'status' => 403 ) );
		}

$raw_locations = $request->get_json_params();
		$locations     = array();

foreach ( (array) $raw_locations as $raw_location ) {
			if ( empty( $raw_location['code'] ) ) {
				continue;
			}

$type = ! empty( $raw_location['type'] ) ? sanitize_text_field( $raw_location['type'] ) : 'country';

if ( ! in_array( $type, array( 'postcode', 'state', 'country', 'continent' ), true ) ) {
				continue;
			}

$locations[] = array(
				'code' => sanitize_text_field( $raw_location['code'] ),
				'type' => sanitize_text_field( $type ),
			);
		}

$zone->set_locations( $locations );
		$zone->save();

return $this->get_items( $request );
	}

/**
	 * Prepare the Shipping Zone Location for the REST response.
	 *
	 * @param array $item Shipping Zone Location.
	 * @param WP_REST_Request $request Request object.
	 * @return WP_REST_Response $response
	 */
	public function prepare_item_for_response( $item, $request ) {
		$context = empty( $request['context'] ) ? 'view' : $request['context'];
		$data    = $this->add_additional_fields_to_object( $item, $request );
		$data    = $this->filter_response_by_context( $data, $context );

// Wrap the data in a response object.
		$response = rest_ensure_response( $data );

$response->add_links( $this->prepare_links( (int) $request['id'] ) );

return $response;
	}

/**
	 * Prepare links for the request.
	 *
	 * @param int $zone_id Given Shipping Zone ID.
	 * @return array Links for the given Shipping Zone Location.
	 */
	protected function prepare_links( $zone_id ) {
		$base  = '/' . $this->namespace . '/' . $this->rest_base . '/' . $zone_id;
		$links = array(
			'collection' => array(
				'href' => rest_url( $base . '/locations' ),
			),
			'describes'  => array(
				'href' => rest_url( $base ),
			),
		);

return $links;
	}

/**
	 * Get the Shipping Zone Locations schema, conforming to JSON Schema
	 *
	 * @return array
	 */
	public function get_item_schema() {
		$schema = array(
			'$schema'    => 'http://json-schema.org/draft-04/schema#',
			'title'      => 'shipping_zone_location',
			'type'       => 'object',
			'properties' => array(
				'code' => array(
					'description' => __( 'Shipping zone location code.', 'woocommerce' ),
					'type'        => 'string',
					'context'     => array( 'view', 'edit' ),
				),
				'type' => array(
					'description' => __( 'Shipping zone location type.', 'woocommerce' ),
					'type'        => 'string',
					'default'     => 'country',
					'enum'        => array(
						'postcode',
						'state',
						'country',
						'continent',
					),
					'context'     => array( 'view', 'edit' ),
				),
			),
		);

return $this->add_additional_fields_schema( $schema );
	}
}

MR SKB