From bbb395d5456bc800b8da7165962950b905a2dfe0 Mon Sep 17 00:00:00 2001
From: Tomas Cohen Arazi <tomascohen@theke.io>
Date: Tue, 27 Nov 2018 20:28:29 -0300
Subject: [PATCH] Bug 18805: Add ability to use up account credits

This patch introduces a new button in the 'Pay fines' tab  on the
patron's account page. This button, labeled 'Normalize account' is only
displayed when outstanding credits are available, that could be used to
pay up existing debts.

When clicking the button, the Koha::Account::normalize_balance method
(bug 21896) is used for the purpose.

To test:
- Apply this patch (on top of 21896)
- On a patron's 'Fines' tab, create a 'manual invoice' (maybe more than
  one)
- Go to the 'Pay fines' tab
=> SUCCESS: No 'Apply credits' button is displayed.
- On the 'create manual credit' tab, create a couple credits.
- Go to the 'Pay fines'
=> SUCCESS: 'Apply credits' button is displayed
- Click on 'Apply credits'
=> SUCCESS: Outstanding credits have been used to pay up debts.
- Play with different options (credit excedes debts and vice-versa, they
        match, etc)
=> SUCCESS: They all work as expected
- Sign off :-D

Signed-off-by: Christopher Brannon <cbrannon@cdalibrary.org>
---
 .../prog/en/modules/members/pay.tt            | 10 +++++++++
 members/pay.pl                                | 21 ++++++++++++++++++-
 2 files changed, 30 insertions(+), 1 deletion(-)

diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/members/pay.tt b/koha-tmpl/intranet-tmpl/prog/en/modules/members/pay.tt
index cb49492a94..6d8c942149 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/members/pay.tt
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/members/pay.tt
@@ -52,7 +52,11 @@
 <tfoot>
 <tr>
     <td class="total" colspan="6">Total due:</td>
+[% IF outstanding_credits.total_outstanding < 0 %]
+    <td style="text-align: right;">[% total + outstanding_credits.total_outstanding | $Price %]</td>
+[% ELSE %]
     <td style="text-align: right;">[% total | $Price %]</td>
+[% END %]
 </tr>
 </tfoot>
 <tbody>
@@ -109,6 +113,12 @@
     <td class="debit" style="text-align: right;">[% line.amountoutstanding | $Price %]</td>
 </tr>
 [% END %]
+[% IF outstanding_credits.total_outstanding < 0 %]
+<tr>
+    <td class="total" colspan="6">Outstanding credits could be applied <input type="submit" id="apply_credits" name="apply_credits"  value="Apply credits" class="submit" /></td>
+    <td class="credit" style="text-align: right;">[% outstanding_credits.total_outstanding | $Price %]</td>
+</tr>
+[% END %]
 [% IF ( account_grp.total ) %]
 <tr>
 
diff --git a/members/pay.pl b/members/pay.pl
index b2216aa511..848141906e 100755
--- a/members/pay.pl
+++ b/members/pay.pl
@@ -87,6 +87,9 @@ elsif ( $input->param('writeoff_selected') ) {
 elsif ( $input->param('woall') ) {
     writeoff_all(@names);
 }
+elsif ( $input->param('apply_credits') ) {
+    apply_credits({ patron => $patron, cgi => $input });
+}
 elsif ( $input->param('confirm_writeoff') ) {
     my $accountlines_id = $input->param('accountlines_id');
     my $amount          = $input->param('amountwrittenoff');
@@ -138,7 +141,9 @@ output_html_with_http_headers $input, $cookie, $template->output;
 sub add_accounts_to_template {
 
     my $patron = Koha::Patrons->find( $borrowernumber );
-    my $account_lines = $patron->account->outstanding_debits;
+    my $account = $patron->account;
+    my $outstanding_credits = $account->outstanding_credits;
+    my $account_lines = $account->outstanding_debits;
     my $total = $account_lines->total_outstanding;
     my @accounts;
     while ( my $account_line = $account_lines->next ) {
@@ -157,7 +162,9 @@ sub add_accounts_to_template {
         patron   => $patron,
         accounts => \@accounts,
         total    => $total,
+        outstanding_credits => $outstanding_credits
     );
+
     return;
 
 }
@@ -273,3 +280,15 @@ sub payselected {
     print $input->redirect($redirect);
     return;
 }
+
+sub apply_credits {
+    my ($args) = @_;
+
+    my $patron = $args->{patron};
+    my $cgi    = $args->{cgi};
+
+    $patron->account->reconcile_balance();
+
+    print $cgi->redirect("/cgi-bin/koha/members/pay.pl?borrowernumber=" . $patron->borrowernumber );
+    return;
+}
-- 
2.17.2 (Apple Git-113)