0042753: Preypayment calculation limit is not taking into account discounts

# HG changeset patch
# User Ranjith S R <ranjith@qualiantech.com>
# Date 1578566322 -19800
#      Thu Jan 09 16:08:42 2020 +0530
# Node ID e1fa556c0a456c0aa9c1ecb18a1b65e7529141d2
# Parent  0b55f108b2eeb96e2df6999405aa6f43abf2ab87
Fixed issue 42753 : Receipt Prepayment amount should exclude line discount amount

diff -r 0b55f108b2ee -r e1fa556c0a45 web/org.openbravo.retail.posterminal/js/model/prepaymentrules.js
--- a/web/org.openbravo.retail.posterminal/js/model/prepaymentrules.js	Wed Jan 08 19:16:56 2020 +0530
+++ b/web/org.openbravo.retail.posterminal/js/model/prepaymentrules.js	Thu Jan 09 16:08:42 2020 +0530
@@ -1,6 +1,6 @@
 /*
  ************************************************************************************
- * Copyright (C) 2017-2018 Openbravo S.L.U.
+ * Copyright (C) 2017-2019 Openbravo S.L.U.
  * Licensed under the Openbravo Commercial License version 1.0
  * You may obtain a copy of the License at http://www.openbravo.com/legal/obcl.html
  * or in the legal folder of this module distribution.
@@ -32,7 +32,15 @@
               line.get('obrdmDeliveryMode') === 'PickAndCarry'
             ) {
               prepaymentPercLimit = 100;
-              linePrepaymentAmount = line.get('price');
+              linePrepaymentAmount = line.get('gross');
+              if (line.get('promotions') && line.get('promotions').length > 0) {
+                linePrepaymentAmount = OB.DEC.sub(
+                  linePrepaymentAmount,
+                  line.get('promotions').reduce(function(total, model) {
+                    return OB.DEC.add(total, model.amt);
+                  }, 0)
+                );
+              }
               line.set('obposLinePrepaymentAmount', linePrepaymentAmount);
               return OB.DEC.add(memo, linePrepaymentAmount);
             } else {