+sub storno {
+ $main::lxdebug->enter_sub();
+
+ my ($self, $form, $myconfig, $id) = @_;
+
+ my ($query, $new_id, $storno_row, $acc_trans_rows);
+ my $dbh = $form->get_standard_dbh($myconfig);
+
+ $query = qq|SELECT nextval('glid')|;
+ ($new_id) = selectrow_query($form, $dbh, $query);
+
+ $query = qq|SELECT * FROM ap WHERE id = ?|;
+ $storno_row = selectfirst_hashref_query($form, $dbh, $query, $id);
+
+ $storno_row->{id} = $new_id;
+ $storno_row->{storno_id} = $id;
+ $storno_row->{storno} = 't';
+ $storno_row->{invnumber} = 'Storno-' . $storno_row->{invnumber};
+ $storno_row->{amount} *= -1;
+ $storno_row->{netamount} *= -1;
+ $storno_row->{paid} = $storno_row->{amount};
+
+ delete @$storno_row{qw(itime mtime)};
+
+ $query = sprintf 'INSERT INTO ap (%s) VALUES (%s)', join(', ', keys %$storno_row), join(', ', map '?', values %$storno_row);
+ do_query($form, $dbh, $query, (values %$storno_row));
+
+ $query = qq|UPDATE ap SET paid = amount + paid, storno = 't' WHERE id = ?|;
+ do_query($form, $dbh, $query, $id);
+
+ # now copy acc_trans entries
+ $query = qq|SELECT a.*, c.link FROM acc_trans a LEFT JOIN chart c ON a.chart_id = c.id WHERE a.trans_id = ? ORDER BY a.oid|;
+ my $rowref = selectall_hashref_query($form, $dbh, $query, $id);
+
+ # kill all entries containing payments, which are the last 2n rows, of which the last has link =~ /paid/
+ while ($rowref->[-1]{link} =~ /paid/) {
+ splice(@$rowref, -2);
+ }
+
+ for my $row (@$rowref) {
+ delete @$row{qw(itime mtime link)};
+ $query = sprintf 'INSERT INTO acc_trans (%s) VALUES (%s)', join(', ', keys %$row), join(', ', map '?', values %$row);
+ $row->{trans_id} = $new_id;
+ $row->{amount} *= -1;
+ do_query($form, $dbh, $query, (values %$row));
+ }
+
+ $dbh->commit;
+
+ $main::lxdebug->leave_sub();