protected function process_order_without_payment( $order_id ) {
		$order = wc_get_order( $order_id );
		$order->payment_complete();
		wc_empty_cart();

		if ( ! is_ajax() ) {
			wp_safe_redirect(
				apply_filters( 'woocommerce_checkout_no_payment_needed_redirect', $order->get_checkout_order_received_url(), $order )
			);
			exit;
		}

		wp_send_json(
			array(
				'result'   => 'success',
				'redirect' => apply_filters( 'woocommerce_checkout_no_payment_needed_redirect', $order->get_checkout_order_received_url(), $order ),
			)
		);
	}