golden hour

/var/www/html/wp-content/plugins/woocommerce/packages/woocommerce-blocks/src/StoreApi/Schemas

File/Folder	Size	Actions
AbstractAddressSchema.php	5.97 KB
AbstractSchema.php	8.59 KB
BillingAddressSchema.php	3.96 KB
CartCouponSchema.php	3.38 KB
CartExtensionsSchema.php	1.28 KB
CartFeeSchema.php	2.29 KB
CartItemSchema.php	16.3 KB
CartSchema.php	15.44 KB
CartShippingRateSchema.php	11.31 KB
CheckoutSchema.php	7.05 KB
ErrorSchema.php	1.26 KB
ImageAttachmentSchema.php	2.65 KB
OrderCouponSchema.php	2.14 KB
ProductAttributeSchema.php	2.62 KB
ProductCategorySchema.php	3.21 KB
ProductCollectionDataSchema.php	3.52 KB
ProductReviewSchema.php	6.37 KB
ProductSchema.php	26.7 KB
ShippingAddressSchema.php	1.85 KB
TermSchema.php	2.28 KB

Edit: BillingAddressSchema.php

<?php
namespace Automattic\WooCommerce\Blocks\StoreApi\Schemas;

use Automattic\WooCommerce\Blocks\RestApi\Routes;

/**
 * BillingAddressSchema class.
 *
 * Provides a generic billing address schema for composition in other schemas.
 *
 * @internal This API is used internally by Blocks--it is still in flux and may be subject to revisions.
 */
class BillingAddressSchema extends AbstractAddressSchema {
	/**
	 * The schema item name.
	 *
	 * @var string
	 */
	protected $title = 'billing_address';

/**
	 * The schema item identifier.
	 *
	 * @var string
	 */
	const IDENTIFIER = 'billing-address';

/**
	 * Term properties.
	 *
	 * @return array
	 */
	public function get_properties() {
		$properties = parent::get_properties();
		return array_merge(
			$properties,
			[
				'email' => [
					'description' => __( 'Email', 'woocommerce' ),
					'type'        => 'string',
					'context'     => [ 'view', 'edit' ],
					'required'    => true,
				],
				'phone' => [
					'description' => __( 'Phone', 'woocommerce' ),
					'type'        => 'string',
					'context'     => [ 'view', 'edit' ],
					'required'    => true,
				],
			]
		);
	}

/**
	 * Sanitize and format the given address object.
	 *
	 * @param array            $address Value being sanitized.
	 * @param \WP_REST_Request $request The Request.
	 * @param string           $param The param being sanitized.
	 * @return array
	 */
	public function sanitize_callback( $address, $request, $param ) {
		$address          = parent::sanitize_callback( $address, $request, $param );
		$address['email'] = wc_clean( wp_unslash( $address['email'] ) );
		$address['phone'] = wc_clean( wp_unslash( $address['phone'] ) );
		return $address;
	}

/**
	 * Validate the given address object.
	 *
	 * @param array            $address Value being sanitized.
	 * @param \WP_REST_Request $request The Request.
	 * @param string           $param The param being sanitized.
	 * @return true|\WP_Error
	 */
	public function validate_callback( $address, $request, $param ) {
		$errors  = parent::validate_callback( $address, $request, $param );
		$address = $this->sanitize_callback( $address, $request, $param );
		$errors  = is_wp_error( $errors ) ? $errors : new \WP_Error();

if ( ! empty( $address['email'] ) && ! is_email( $address['email'] ) ) {
			$errors->add(
				'invalid_email',
				__( 'The provided email address is not valid', 'woocommerce' )
			);
		}

if ( ! empty( $address['phone'] ) && ! \WC_Validation::is_phone( $address['phone'] ) ) {
			$errors->add(
				'invalid_phone',
				__( 'The provided phone number is not valid', 'woocommerce' )
			);
		}

return $errors->has_errors( $errors ) ? $errors : true;
	}

/**
	 * Convert a term object into an object suitable for the response.
	 *
	 * @param \WC_Order|\WC_Customer $address An object with billing address.
	 *
	 * @throws RouteException When the invalid object types are provided.
	 * @return stdClass
	 */
	public function get_item_response( $address ) {
		if ( ( $address instanceof \WC_Customer || $address instanceof \WC_Order ) ) {
			return (object) $this->prepare_html_response(
				[
					'first_name' => $address->get_billing_first_name(),
					'last_name'  => $address->get_billing_last_name(),
					'company'    => $address->get_billing_company(),
					'address_1'  => $address->get_billing_address_1(),
					'address_2'  => $address->get_billing_address_2(),
					'city'       => $address->get_billing_city(),
					'state'      => $address->get_billing_state(),
					'postcode'   => $address->get_billing_postcode(),
					'country'    => $address->get_billing_country(),
					'email'      => $address->get_billing_email(),
					'phone'      => $address->get_billing_phone(),
				]
			);
		}
		throw new RouteException(
			'invalid_object_type',
			sprintf(
				/* translators: Placeholders are class and method names */
				__( '%1$s requires an instance of %2$s or %3$s for the address', 'woocommerce' ),
				'BillingAddressSchema::get_item_response',
				'WC_Customer',
				'WC_Order'
			),
			500
		);
	}
}