From 1176947b42342ca725020455361fe092255e4d04 Mon Sep 17 00:00:00 2001
From: Tomas Cohen Arazi <tomascohen@theke.io>
Date: Tue, 27 Nov 2018 19:34:29 -0300
Subject: [PATCH] Bug 21896: Add Koha::Account::normalize_balance

This patch adds the normalize_balance() method to Koha::Account. Its
purpose is to apply outstanding credits (i.e. manual ones ore remaining
amounts like in the case of refunds) to outstanding debts.

To test:
- Apply this patchset
- Run:
  $ kshell
 k$ prove t/db_dependent/Koha/Account.t
=> SUCCESS: Tests pass!
- Sign off :-D

Signed-off-by: Christopher Brannon <cbrannon@cdalibrary.org>

Signed-off-by: Mark Tompsett <mtompset@hotmail.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>

Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
---
 Koha/Account.pm | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/Koha/Account.pm b/Koha/Account.pm
index 4356411a1a..064489f65f 100644
--- a/Koha/Account.pm
+++ b/Koha/Account.pm
@@ -515,6 +515,33 @@ sub lines {
     );
 }
 
+=head3 normalize_balance
+
+$account->normalize_balance();
+
+Find outstanding credits and use them to pay outstanding debits
+
+=cut
+
+sub normalize_balance {
+    my ($self) = @_;
+
+    my $outstanding_debits  = $self->outstanding_debits;
+    my $outstanding_credits = $self->outstanding_credits;
+
+    while (     $outstanding_debits->total_outstanding > 0
+            and my $credit = $outstanding_credits->next )
+    {
+        # there's both outstanding debits and credits
+        $credit->apply( { debits => $outstanding_debits } );    # applying credit, no special offset
+
+        $outstanding_debits = $self->outstanding_debits;
+
+    }
+
+    return $self;
+}
+
 1;
 
 =head2 Name mappings
-- 
2.39.5