if ( $payment->tax > 0 ) {
            $line_items[] = array(
                'type'        => 'tax',
                'price'       => $payment->tax,
                'title'       => 'Tax',
                'description' => '',
            );
        }

        if ( ! empty( $discount ) ) {
            $line_items[] = array(
                'type'        => 'discount',
                'price'       => -$discount,
                'title'       => 'Discounts Applied',
                'description' => 'Used discount codes: ' . $payment->discounts,
                'code'        => $payment->discounts, // <-- new line
            );
        }

        $order_args = array(
            'order_label'     => 'EDD Order #' . $payment_id,
            'order_number'    => $payment_id,
            'order_edit_link' => admin_url( 'post.php?post=' . $payment_id . '&action=edit' ),
            'payment_method'  => $payment->gateway,
            'user_email'      => $payment->email,
            'products'        => $products,
            'line_items'      => $line_items,
            'total'           => $payment->total,
            'currency'        => $payment->currency,
            'currency_symbol' => '$',
            'order_date'      => strtotime( $payment->get_meta( '_edd_completed_date' ) ),
            'provider'        => 'easy-digital-downloads',
            'user_id'         => $payment->user_id,
        );