X-Git-Url: http://git.freeside.biz/gitweb/?a=blobdiff_plain;f=FS%2FFS%2Fpart_event%2FAction%2Ffee.pm;h=c2b4673fa3e4b016a7c653905d6cbfe139660278;hb=c7bc6770f2f0b4413b788f8fc9abde6ad5548da3;hp=68288d090f7495c2a184754862240a2b92b034e3;hpb=b5c4237a34aef94976bc343c8d9e138664fc3984;p=freeside.git

diff --git a/FS/FS/part_event/Action/fee.pm b/FS/FS/part_event/Action/fee.pm
index 68288d090..c2b4673fa 100644
--- a/FS/FS/part_event/Action/fee.pm
+++ b/FS/FS/part_event/Action/fee.pm
@@ -17,14 +17,66 @@ sub option_fields {
                     type=>'checkbox', value=>'Y' },
     'nextbill' => { label=>'Hold late fee until next invoice',
                     type=>'checkbox', value=>'Y' },
+    'limit_to_credit'=>
+                  { label=>"Charge no more than the customer's credit balance",
+                    type=>'checkbox', value=>'Y' },
   );
 }
 
 sub default_weight { 10; }
 
 sub _calc_fee {
-  #my( $self, $cust_object ) = @_;
-  my $self = shift;
+  my( $self, $cust_object ) = @_;
+  if ( $self->option('limit_to_credit') ) {
+    my $balance = $cust_object->cust_main->balance;
+    if ( $balance >= 0 ) {
+      return 0;
+    } elsif ( (-1 * $balance) < $self->option('charge') ) {
+      my $total = -1 * $balance;
+      # if it's tax exempt, then we're done
+      # XXX we also bail out if you're using external tax tables, because
+      # they're definitely NOT linear and we haven't yet had a reason to 
+      # make that case work.
+      return $total if $self->option('setuptax') eq 'Y'
+                    or FS::Conf->new->exists('enable_taxproducts');
+
+      # estimate tax rate
+      # false laziness with xmlhttp-calculate_taxes, cust_main::Billing, etc.
+      # XXX not accurate with monthly exemptions
+      my $cust_main = $cust_object->cust_main;
+      my $taxlisthash = {};
+      my $charge = FS::cust_bill_pkg->new({
+          setup => $total,
+          recur => 0,
+          details => []
+      });
+      my $part_pkg = FS::part_pkg->new({
+          taxclass => $self->option('taxclass')
+      });
+      my $error = $cust_main->_handle_taxes(
+        FS::part_pkg->new({ taxclass => ($self->option('taxclass') || '') }),
+        $taxlisthash,
+        $charge,
+        FS::cust_pkg->new({custnum => $cust_main->custnum}),
+      );
+      if ( $error ) {
+        warn "error estimating taxes for breakage charge: custnum ".$cust_main->custnum."\n";
+        return $total;
+      }
+      # $taxlisthash: tax identifier => [ cust_main_county, cust_bill_pkg... ]
+      my $total_rate = 0;
+      my @taxes = map { $_->[0] } values %$taxlisthash;
+      foreach (@taxes) {
+        $total_rate += $_->tax;
+      }
+      return $total if $total_rate == 0; # no taxes apply
+
+      my $total_cents = $total * 100;
+      my $charge_cents = sprintf('%.0f', $total_cents * 100/(100 + $total_rate));
+      return ($charge_cents / 100);
+    }
+  }
+
   $self->option('charge');
 }
 
@@ -44,6 +96,9 @@ sub do_action {
     'setuptax' => $self->option('setuptax'),
   );
 
+  # amazingly, FS::cust_main::charge will allow a charge of zero
+  return '' if $charge{'amount'} == 0;
+
   #unless its more than N months away?
   $charge{'start_date'} = $cust_main->next_bill_date
     if $self->option('nextbill');