From dcf941f3cdd0389d775e5bb55505f7ab250c0021 Mon Sep 17 00:00:00 2001
From: Markus Doits <markus.doits@stellenticket.de>
Date: Fri, 3 Jan 2025 18:33:21 +0100
Subject: [PATCH] add payment reference

---
 lib/secretariat/invoice.rb | 4 ++++
 test/invoice_test.rb       | 1 +
 2 files changed, 5 insertions(+)

diff --git a/lib/secretariat/invoice.rb b/lib/secretariat/invoice.rb
index ad86208..77251b4 100644
--- a/lib/secretariat/invoice.rb
+++ b/lib/secretariat/invoice.rb
@@ -28,6 +28,7 @@ module Secretariat
     :line_items,
     :currency_code,
     :payment_type,
+    :payment_reference,
     :payment_text,
     :payment_terms_text,
     :payment_due_date,
@@ -212,6 +213,9 @@ def to_xml(version: 1, validate: true)
             end
             trade_settlement = by_version(version, 'ApplicableSupplyChainTradeSettlement', 'ApplicableHeaderTradeSettlement')
             xml['ram'].send(trade_settlement) do
+              if payment_reference && payment_reference != ''
+                xml['ram'].PaymentReference payment_reference
+              end
               xml['ram'].InvoiceCurrencyCode currency_code
               xml['ram'].SpecifiedTradeSettlementPaymentMeans do
                 xml['ram'].TypeCode payment_code
diff --git a/test/invoice_test.rb b/test/invoice_test.rb
index f4fe781..0726f9e 100644
--- a/test/invoice_test.rb
+++ b/test/invoice_test.rb
@@ -99,6 +99,7 @@ def make_de_invoice
         currency_code: 'USD',
         payment_type: :CREDITCARD,
         payment_text: 'Kreditkarte',
+        payment_reference: 'INV 123123123',
         payment_iban: 'DE02120300000000202051',
         payment_terms_text: "Zahlbar innerhalb von 14 Tagen ohne Abzug",
         tax_category: :STANDARDRATE,