+ my $self = shift;
+ qsearch( 'cust_bill_pkg_discount', { 'billpkgnum' => $self->billpkgnum } );
+}
+
+=item recur_show_zero
+
+=cut
+
+sub recur_show_zero { shift->_X_show_zero('recur'); }
+sub setup_show_zero { shift->_X_show_zero('setup'); }
+
+sub _X_show_zero {
+ my( $self, $what ) = @_;
+
+ return 0 unless $self->$what() == 0 && $self->pkgnum;
+
+ $self->cust_pkg->_X_show_zero($what);
+}
+
+=back
+
+=head1 CLASS METHODS
+
+=over 4
+
+=item owed_sql [ BEFORE, AFTER, OPTIONS ]
+
+Returns an SQL expression for the amount owed. BEFORE and AFTER specify
+a date window. OPTIONS may include 'no_usage' (excludes usage charges)
+and 'setuprecur' (set to "setup" or "recur" to limit to one or the other).
+
+=cut
+
+sub owed_sql {
+ my ($class, $start, $end, %opt) = @_;
+ my $charged =
+ $opt{setuprecur} =~ /^s/ ? 'cust_bill_pkg.setup' :
+ $opt{setuprecur} =~ /^r/ ? 'cust_bill_pkg.recur' :
+ 'cust_bill_pkg.setup + cust_bill_pkg.recur';
+
+ if ( $opt{no_usage} ) {
+ $charged .= ' - ' . $class->usage_sql;
+ }
+
+ '(' . $charged .
+ ' - ' . $class->paid_sql($start, $end, %opt) .
+ ' - ' . $class->credited_sql($start, $end, %opt) . ')'
+}
+
+=item usage_sql
+
+Returns an SQL expression for the total usage charges in details on
+an item.
+
+=cut
+
+sub usage_sql {
+ my $class = shift;
+ "(SELECT COALESCE(SUM(cust_bill_pkg_detail.amount),0)
+ FROM cust_bill_pkg_detail
+ WHERE cust_bill_pkg_detail.billpkgnum = cust_bill_pkg.billpkgnum)"
+}
+
+=item paid_sql [ BEFORE, AFTER, OPTIONS ]
+
+Returns an SQL expression for the sum of payments applied to this item.
+
+=cut
+
+sub paid_sql {
+ my ($class, $start, $end, %opt) = @_;
+ $start = $start ? "AND cust_bill_pay._date <= $start" : '';
+ $end = $end ? "AND cust_bill_pay._date > $end" : '';
+ my $setuprecur =
+ $opt{setuprecur} =~ /^s/ ? 'setup' :
+ $opt{setuprecur} =~ /^r/ ? 'recur' :
+ '';
+ $setuprecur &&= "AND setuprecur = '$setuprecur'";
+ "( SELECT COALESCE(SUM(cust_bill_pay_pkg.amount),0)
+ FROM cust_bill_pay_pkg JOIN cust_bill_pay USING (billpaynum)
+ WHERE cust_bill_pay_pkg.billpkgnum = cust_bill_pkg.billpkgnum
+ $start $end $setuprecur )";
+}
+
+sub credited_sql {
+ my ($class, $start, $end, %opt) = @_;
+ $start = $start ? "AND cust_credit_bill._date <= $start" : '';
+ $end = $end ? "AND cust_credit_bill._date > $end" : '';
+ my $setuprecur =
+ $opt{setuprecur} =~ /^s/ ? 'setup' :
+ $opt{setuprecur} =~ /^r/ ? 'recur' :
+ '';
+ $setuprecur &&= "AND setuprecur = '$setuprecur'";
+ "( SELECT COALESCE(SUM(cust_credit_bill_pkg.amount),0)
+ FROM cust_credit_bill_pkg JOIN cust_credit_bill USING (creditbillnum)
+ WHERE cust_credit_bill_pkg.billpkgnum = cust_bill_pkg.billpkgnum
+ $start $end $setuprecur )";