$request );

		$customer->save();

		$this->cart_controller->calculate_totals();

		return rest_ensure_response( $this->schema->get_item_response( $cart ) );
	}

	/**
	 * Get full customer billing address.
	 *
	 * @param \WC_Customer $customer Customer object.
	 * @return array
	 */
	protected function get_customer_billing_address( \WC_Customer $customer ) {
		$validation_util = new ValidationUtils();
		$billing_country = $customer->get_billing_country();
		$billing_state   = $customer->get_billing_state();

		$additional_fields = $this->additional_fields_controller->get_all_fields_from_customer( $customer );

		$additional_fields = array_reduce(
			array_keys( $additional_fields ),
			function( $carry, $key ) use ( $additional_fields ) {
				if ( 0 === strpos( $key, '/billing/' ) ) {
					$value         = $additional_fields[ $key ];
					$key           = str_replace( '/billing/', '', $key );
					$carry[ $key ] = $value;
				}
				return $carry;
			},
			array()
		);

		/**
		 * There's a bug in WooCommerce core in which not having a state ("") would result in us validating against the store's state.
		 * This resets the state to an empty string if it doesn't match the country.
		 *
		 * @todo Removing this handling once we fix the issue with the state value always being the store one.
		 */
		if ( ! $validation_util->validate_state( $billing_state, $billing_country ) ) {
			$billing_state = '';
		}
		return array_merge(
			[
				'first_name' => $customer->get_billing_first_name(),
				'last_name'  => $customer->get_billing_last_name(),
				'company'    => $customer->get_billing_company(),
				'address_1'  => $customer->get_billing_address_1(),
				'address_2'  => $customer->get_billing_address_2(),
				'city'       => $customer->get_billing_city(),
				'state'      => $billing_state,
				'postcode'   => $customer->get_billing_postcode(),
				'country'    => $billing_country,
				'phone'      => $customer->get_billing_phone(),
				'email'      => $customer->get_billing_email(),
			],
			$additional_fields
		);
	}

	/**
	 * Get full customer shipping address.
	 *
	 * @param \WC_Customer $customer Customer object.
	 * @return array
	 */
	protected function get_customer_shipping_address( \WC_Customer $customer ) {
		$additional_fields = $this->additional_fields_controller->get_all_fields_from_customer( $customer );

		$additional_fields = array_reduce(
			array_keys( $additional_fields ),
			function( $carry, $key ) use ( $additional_fields ) {
				if ( 0 === strpos( $key, '/shipping/' ) ) {
					$value         = $additional_fields[ $key ];
					$key           = str_replace( '/shipping/', '', $key );
					$carry[ $key ] = $value;
				}
				return $carry;
			},
			array()
		);
		return array_merge(
			[
				'first_name' => $customer->get_shipping_first_name(),
				'last_name'  => $customer->get_shipping_last_name(),
				'company'    => $customer->get_shipping_company(),
				'address_1'  => $customer->get_shipping_address_1(),
				'address_2'  => $customer->get_shipping_address_2(),
				'city'       => $customer->get_shipping_city(),
				'state'      => $customer->get_shipping_state(),
				'postcode'   => $customer->get_shipping_postcode(),
				'country'    => $customer->get_shipping_country(),
				'phone'      => $customer->get_shipping_phone(),
			],
			$additional_fields
		);
	}
}