X-Git-Url: http://git.freeside.biz/gitweb/?a=blobdiff_plain;f=FS%2FFS%2Fcust_bill.pm;h=d9e04de53215a92384b2e2c5930bd2ff748ed2b1;hb=f9a181e4c2e505df84de16190ee3b75011326f3f;hp=54641ee358ee97b8d919c60e927cd516ef507424;hpb=88d237b8fe396b4e85a16e20eccfeb4e22e94e24;p=freeside.git

diff --git a/FS/FS/cust_bill.pm b/FS/FS/cust_bill.pm
index 54641ee35..ca35a443a 100644
--- a/FS/FS/cust_bill.pm
+++ b/FS/FS/cust_bill.pm
@@ -1,53 +1,58 @@
 package FS::cust_bill;
 
 use strict;
-use vars qw( @ISA $conf $money_char );
-use vars qw( $lpr $invoice_from $smtpmachine );
-use vars qw( $processor );
-use vars qw( $xaction $E_NoErr );
-use vars qw( $bop_processor $bop_login $bop_password $bop_action @bop_options );
+use vars qw( @ISA $DEBUG $me $conf
+             $money_char $date_format $rdate_format $date_format_long );
 use vars qw( $invoice_lines @buf ); #yuck
+use Fcntl qw(:flock); #for spool_csv
+use List::Util qw(min max);
 use Date::Format;
-use Mail::Internet 1.44;
-use Mail::Header;
-use Text::Template;
+use Text::Template 1.20;
+use File::Temp 0.14;
+use String::ShellQuote;
+use HTML::Entities;
+use Locale::Country;
+use Storable qw( freeze thaw );
+use GD::Barcode;
 use FS::UID qw( datasrc );
-use FS::Record qw( qsearch qsearchs );
+use FS::Misc qw( send_email send_fax generate_ps generate_pdf do_print );
+use FS::Record qw( qsearch qsearchs dbh );
+use FS::cust_main_Mixin;
 use FS::cust_main;
+use FS::cust_statement;
 use FS::cust_bill_pkg;
+use FS::cust_bill_pkg_display;
+use FS::cust_bill_pkg_detail;
 use FS::cust_credit;
 use FS::cust_pay;
 use FS::cust_pkg;
 use FS::cust_credit_bill;
+use FS::pay_batch;
 use FS::cust_pay_batch;
 use FS::cust_bill_event;
+use FS::cust_event;
+use FS::part_pkg;
+use FS::cust_bill_pay;
+use FS::cust_bill_pay_batch;
+use FS::part_bill_event;
+use FS::payby;
+use FS::bill_batch;
+use FS::cust_bill_batch;
+use Cwd;
 
-@ISA = qw( FS::Record );
+@ISA = qw( FS::cust_main_Mixin FS::Record );
 
-#ask FS::UID to run this stuff for us later
-$FS::UID::callback{'FS::cust_bill'} = sub { 
+$DEBUG = 0;
+$me = '[FS::cust_bill]';
 
+#ask FS::UID to run this stuff for us later
+FS::UID->install_callback( sub { 
   $conf = new FS::Conf;
-
-  $money_char = $conf->config('money_char') || '$';  
-
-  $lpr = $conf->config('lpr');
-  $invoice_from = $conf->config('invoice_from');
-  $smtpmachine = $conf->config('smtpmachine');
-
-  if ( $conf->exists('business-onlinepayment') ) {
-    ( $bop_processor,
-      $bop_login,
-      $bop_password,
-      $bop_action,
-      @bop_options
-    ) = $conf->config('business-onlinepayment');
-    $bop_action ||= 'normal authorization';
-    eval "use Business::OnlinePayment";  
-    $processor="Business::OnlinePayment::$bop_processor";
-  }
-
-};
+  $money_char       = $conf->config('money_char')       || '$';  
+  $date_format      = $conf->config('date_format')      || '%x'; #/YY
+  $rdate_format     = $conf->config('date_format')      || '%m/%d/%Y';  #/YYYY
+  $date_format_long = $conf->config('date_format_long') || '%b %o, %Y';
+} );
 
 =head1 NAME
 
@@ -88,6 +93,8 @@ owes you money.  The specific charges are itemized as B<cust_bill_pkg> records
 (see L<FS::cust_bill_pkg>).  FS::cust_bill inherits from FS::Record.  The
 following fields are currently supported:
 
+Regular fields
+
 =over 4
 
 =item invnum - primary key (assigned automatically for new invoices)
@@ -99,10 +106,38 @@ L<Time::Local> and L<Date::Parse> for conversion functions.
 
 =item charged - amount of this invoice
 
+=item invoice_terms - optional terms override for this specific invoice
+
+=back
+
+Customer info at invoice generation time
+
+=over 4
+
+=item previous_balance
+
+=item billing_balance
+
+=back
+
+Deprecated
+
+=over 4
+
 =item printed - deprecated
 
+=back
+
+Specific use cases
+
+=over 4
+
 =item closed - books closed flag, empty or `Y'
 
+=item statementnum - invoice aggregation (see L<FS::cust_statement>)
+
+=item agent_invid - legacy invoice number
+
 =back
 
 =head1 METHODS
@@ -119,44 +154,174 @@ Invoices are normally created by calling the bill method of a customer object
 
 sub table { 'cust_bill'; }
 
+sub cust_linked { $_[0]->cust_main_custnum; } 
+sub cust_unlinked_msg {
+  my $self = shift;
+  "WARNING: can't find cust_main.custnum ". $self->custnum.
+  ' (cust_bill.invnum '. $self->invnum. ')';
+}
+
 =item insert
 
 Adds this invoice to the database ("Posts" the invoice).  If there is an error,
 returns the error, otherwise returns false.
 
+=cut
+
+sub insert {
+  my $self = shift;
+  warn "$me insert called\n" if $DEBUG;
+
+  local $SIG{HUP} = 'IGNORE';
+  local $SIG{INT} = 'IGNORE';
+  local $SIG{QUIT} = 'IGNORE';
+  local $SIG{TERM} = 'IGNORE';
+  local $SIG{TSTP} = 'IGNORE';
+  local $SIG{PIPE} = 'IGNORE';
+
+  my $oldAutoCommit = $FS::UID::AutoCommit;
+  local $FS::UID::AutoCommit = 0;
+  my $dbh = dbh;
+
+  my $error = $self->SUPER::insert;
+  if ( $error ) {
+    $dbh->rollback if $oldAutoCommit;
+    return $error;
+  }
+
+  if ( $self->get('cust_bill_pkg') ) {
+    foreach my $cust_bill_pkg ( @{$self->get('cust_bill_pkg')} ) {
+      $cust_bill_pkg->invnum($self->invnum);
+      my $error = $cust_bill_pkg->insert;
+      if ( $error ) {
+        $dbh->rollback if $oldAutoCommit;
+        return "can't create invoice line item: $error";
+      }
+    }
+  }
+
+  $dbh->commit or die $dbh->errstr if $oldAutoCommit;
+  '';
+
+}
+
 =item delete
 
-Currently unimplemented.  I don't remove invoices because there would then be
-no record you ever posted this invoice (which is bad, no?)
+This method now works but you probably shouldn't use it.  Instead, apply a
+credit against the invoice.
+
+Using this method to delete invoices outright is really, really bad.  There
+would be no record you ever posted this invoice, and there are no check to
+make sure charged = 0 or that there are no associated cust_bill_pkg records.
+
+Really, don't use it.
 
 =cut
 
 sub delete {
   my $self = shift;
   return "Can't delete closed invoice" if $self->closed =~ /^Y/i;
-  $self->SUPER::delete(@_);
+
+  local $SIG{HUP} = 'IGNORE';
+  local $SIG{INT} = 'IGNORE';
+  local $SIG{QUIT} = 'IGNORE';
+  local $SIG{TERM} = 'IGNORE';
+  local $SIG{TSTP} = 'IGNORE';
+  local $SIG{PIPE} = 'IGNORE';
+
+  my $oldAutoCommit = $FS::UID::AutoCommit;
+  local $FS::UID::AutoCommit = 0;
+  my $dbh = dbh;
+
+  foreach my $table (qw(
+    cust_bill_event
+    cust_event
+    cust_credit_bill
+    cust_bill_pay
+    cust_bill_pay
+    cust_credit_bill
+    cust_pay_batch
+    cust_bill_pay_batch
+    cust_bill_pkg
+  )) {
+
+    foreach my $linked ( $self->$table() ) {
+      my $error = $linked->delete;
+      if ( $error ) {
+        $dbh->rollback if $oldAutoCommit;
+        return $error;
+      }
+    }
+
+  }
+
+  my $error = $self->SUPER::delete(@_);
+  if ( $error ) {
+    $dbh->rollback if $oldAutoCommit;
+    return $error;
+  }
+
+  $dbh->commit or die $dbh->errstr if $oldAutoCommit;
+
+  '';
+
 }
 
-=item replace OLD_RECORD
+=item replace [ OLD_RECORD ]
 
-Replaces the OLD_RECORD with this one in the database.  If there is an error,
-returns the error, otherwise returns false.
+You can, but probably shouldn't modify invoices...
 
-Only printed may be changed.  printed is normally updated by calling the
-collect method of a customer object (see L<FS::cust_main>).
+Replaces the OLD_RECORD with this one in the database, or, if OLD_RECORD is not
+supplied, replaces this record.  If there is an error, returns the error,
+otherwise returns false.
 
 =cut
 
-sub replace {
+#replace can be inherited from Record.pm
+
+# replace_check is now the preferred way to #implement replace data checks
+# (so $object->replace() works without an argument)
+
+sub replace_check {
   my( $new, $old ) = ( shift, shift );
-  return "Can't change custnum!" unless $old->custnum == $new->custnum;
+  return "Can't modify closed invoice" if $old->closed =~ /^Y/i;
   #return "Can't change _date!" unless $old->_date eq $new->_date;
-  return "Can't change _date!" unless $old->_date == $new->_date;
-  return "Can't change charged!" unless $old->charged == $new->charged;
+  return "Can't change _date" unless $old->_date == $new->_date;
+  return "Can't change charged" unless $old->charged == $new->charged
+                                    || $old->charged == 0
+				    || $new->{'Hash'}{'cc_surcharge_replace_hack'};
+
+  '';
+}
+
 
-  $new->SUPER::replace($old);
+=item add_cc_surcharge
+
+Giant hack
+
+=cut
+
+sub add_cc_surcharge {
+    my ($self, $pkgnum, $amount) = (shift, shift, shift);
+
+    my $error;
+    my $cust_bill_pkg = new FS::cust_bill_pkg({
+				    'invnum' => $self->invnum,
+				    'pkgnum' => $pkgnum,
+				    'setup' => $amount,
+			});
+    $error = $cust_bill_pkg->insert;
+    return $error if $error;
+
+    $self->{'Hash'}{'cc_surcharge_replace_hack'} = 1;
+    $self->charged($self->charged+$amount);
+    $error = $self->replace;
+    return $error if $error;
+
+    $self->apply_payments_and_credits;
 }
 
+
 =item check
 
 Checks all fields to make sure this is a valid invoice.  If there is an error,
@@ -170,22 +335,37 @@ sub check {
 
   my $error =
     $self->ut_numbern('invnum')
-    || $self->ut_number('custnum')
+    || $self->ut_foreign_key('custnum', 'cust_main', 'custnum' )
     || $self->ut_numbern('_date')
     || $self->ut_money('charged')
     || $self->ut_numbern('printed')
     || $self->ut_enum('closed', [ '', 'Y' ])
+    || $self->ut_foreign_keyn('statementnum', 'cust_statement', 'statementnum' )
+    || $self->ut_numbern('agent_invid') #varchar?
   ;
   return $error if $error;
 
-  return "Unknown customer"
-    unless qsearchs( 'cust_main', { 'custnum' => $self->custnum } );
-
   $self->_date(time) unless $self->_date;
 
   $self->printed(0) if $self->printed eq '';
 
-  ''; #no error
+  $self->SUPER::check;
+}
+
+=item display_invnum
+
+Returns the displayed invoice number for this invoice: agent_invid if
+cust_bill-default_agent_invid is set and it has a value, invnum otherwise.
+
+=cut
+
+sub display_invnum {
+  my $self = shift;
+  if ( $conf->exists('cust_bill-default_agent_invid') && $self->agent_invid ){
+    return $self->agent_invid;
+  } else {
+    return $self->invnum;
+  }
 }
 
 =item previous
@@ -214,13 +394,90 @@ Returns the line items (see L<FS::cust_bill_pkg>) for this invoice.
 
 sub cust_bill_pkg {
   my $self = shift;
-  qsearch( 'cust_bill_pkg', { 'invnum' => $self->invnum } );
+  qsearch(
+    { 'table'    => 'cust_bill_pkg',
+      'hashref'  => { 'invnum' => $self->invnum },
+      'order_by' => 'ORDER BY billpkgnum',
+    }
+  );
+}
+
+=item cust_bill_pkg_pkgnum PKGNUM
+
+Returns the line items (see L<FS::cust_bill_pkg>) for this invoice and
+specified pkgnum.
+
+=cut
+
+sub cust_bill_pkg_pkgnum {
+  my( $self, $pkgnum ) = @_;
+  qsearch(
+    { 'table'    => 'cust_bill_pkg',
+      'hashref'  => { 'invnum' => $self->invnum,
+                      'pkgnum' => $pkgnum,
+                    },
+      'order_by' => 'ORDER BY billpkgnum',
+    }
+  );
+}
+
+=item cust_pkg
+
+Returns the packages (see L<FS::cust_pkg>) corresponding to the line items for
+this invoice.
+
+=cut
+
+sub cust_pkg {
+  my $self = shift;
+  my @cust_pkg = map { $_->pkgnum > 0 ? $_->cust_pkg : () }
+                     $self->cust_bill_pkg;
+  my %saw = ();
+  grep { ! $saw{$_->pkgnum}++ } @cust_pkg;
+}
+
+=item no_auto
+
+Returns true if any of the packages (or their definitions) corresponding to the
+line items for this invoice have the no_auto flag set.
+
+=cut
+
+sub no_auto {
+  my $self = shift;
+  grep { $_->no_auto || $_->part_pkg->no_auto } $self->cust_pkg;
+}
+
+=item open_cust_bill_pkg
+
+Returns the open line items for this invoice.
+
+Note that cust_bill_pkg with both setup and recur fees are returned as two
+separate line items, each with only one fee.
+
+=cut
+
+# modeled after cust_main::open_cust_bill
+sub open_cust_bill_pkg {
+  my $self = shift;
+
+  # grep { $_->owed > 0 } $self->cust_bill_pkg
+
+  my %other = ( 'recur' => 'setup',
+                'setup' => 'recur', );
+  my @open = ();
+  foreach my $field ( qw( recur setup )) {
+    push @open, map  { $_->set( $other{$field}, 0 ); $_; }
+                grep { $_->owed($field) > 0 }
+                $self->cust_bill_pkg;
+  }
+
+  @open;
 }
 
 =item cust_bill_event
 
-Returns the completed invoice events (see L<FS::cust_bill_event>) for this
-invoice.
+Returns the completed invoice events (deprecated, old-style events - see L<FS::cust_bill_event>) for this invoice.
 
 =cut
 
@@ -229,6 +486,54 @@ sub cust_bill_event {
   qsearch( 'cust_bill_event', { 'invnum' => $self->invnum } );
 }
 
+=item num_cust_bill_event
+
+Returns the number of completed invoice events (deprecated, old-style events - see L<FS::cust_bill_event>) for this invoice.
+
+=cut
+
+sub num_cust_bill_event {
+  my $self = shift;
+  my $sql =
+    "SELECT COUNT(*) FROM cust_bill_event WHERE invnum = ?";
+  my $sth = dbh->prepare($sql) or die  dbh->errstr. " preparing $sql"; 
+  $sth->execute($self->invnum) or die $sth->errstr. " executing $sql";
+  $sth->fetchrow_arrayref->[0];
+}
+
+=item cust_event
+
+Returns the new-style customer billing events (see L<FS::cust_event>) for this invoice.
+
+=cut
+
+#false laziness w/cust_pkg.pm
+sub cust_event {
+  my $self = shift;
+  qsearch({
+    'table'     => 'cust_event',
+    'addl_from' => 'JOIN part_event USING ( eventpart )',
+    'hashref'   => { 'tablenum' => $self->invnum },
+    'extra_sql' => " AND eventtable = 'cust_bill' ",
+  });
+}
+
+=item num_cust_event
+
+Returns the number of new-style customer billing events (see L<FS::cust_event>) for this invoice.
+
+=cut
+
+#false laziness w/cust_pkg.pm
+sub num_cust_event {
+  my $self = shift;
+  my $sql =
+    "SELECT COUNT(*) FROM cust_event JOIN part_event USING ( eventpart ) ".
+    "  WHERE tablenum = ? AND eventtable = 'cust_bill'";
+  my $sth = dbh->prepare($sql) or die  dbh->errstr. " preparing $sql"; 
+  $sth->execute($self->invnum) or die $sth->errstr. " executing $sql";
+  $sth->fetchrow_arrayref->[0];
+}
 
 =item cust_main
 
@@ -241,6 +546,25 @@ sub cust_main {
   qsearchs( 'cust_main', { 'custnum' => $self->custnum } );
 }
 
+=item cust_suspend_if_balance_over AMOUNT
+
+Suspends the customer associated with this invoice if the total amount owed on
+this invoice and all older invoices is greater than the specified amount.
+
+Returns a list: an empty list on success or a list of errors.
+
+=cut
+
+sub cust_suspend_if_balance_over {
+  my( $self, $amount ) = ( shift, shift );
+  my $cust_main = $self->cust_main;
+  if ( $cust_main->total_owed_date($self->_date) < $amount ) {
+    return ();
+  } else {
+    $cust_main->suspend(@_);
+  }
+}
+
 =item cust_credit
 
 Depreciated.  See the cust_credited method.
@@ -282,6 +606,16 @@ sub cust_pay {
   #;
 }
 
+sub cust_pay_batch {
+  my $self = shift;
+  qsearch('cust_pay_batch', { 'invnum' => $self->invnum } );
+}
+
+sub cust_bill_pay_batch {
+  my $self = shift;
+  qsearch('cust_bill_pay_batch', { 'invnum' => $self->invnum } );
+}
+
 =item cust_bill_pay
 
 Returns all payment applications (see L<FS::cust_bill_pay>) for this invoice.
@@ -290,23 +624,71 @@ Returns all payment applications (see L<FS::cust_bill_pay>) for this invoice.
 
 sub cust_bill_pay {
   my $self = shift;
+  map { $_ } #return $self->num_cust_bill_pay unless wantarray;
   sort { $a->_date <=> $b->_date }
     qsearch( 'cust_bill_pay', { 'invnum' => $self->invnum } );
 }
 
 =item cust_credited
 
+=item cust_credit_bill
+
 Returns all applied credits (see L<FS::cust_credit_bill>) for this invoice.
 
 =cut
 
 sub cust_credited {
   my $self = shift;
+  map { $_ } #return $self->num_cust_credit_bill unless wantarray;
   sort { $a->_date <=> $b->_date }
     qsearch( 'cust_credit_bill', { 'invnum' => $self->invnum } )
   ;
 }
 
+sub cust_credit_bill {
+  shift->cust_credited(@_);
+}
+
+=item cust_bill_pay_pkgnum PKGNUM
+
+Returns all payment applications (see L<FS::cust_bill_pay>) for this invoice
+with matching pkgnum.
+
+=cut
+
+sub cust_bill_pay_pkgnum {
+  my( $self, $pkgnum ) = @_;
+  map { $_ } #return $self->num_cust_bill_pay_pkgnum($pkgnum) unless wantarray;
+  sort { $a->_date <=> $b->_date }
+    qsearch( 'cust_bill_pay', { 'invnum' => $self->invnum,
+                                'pkgnum' => $pkgnum,
+                              }
+           );
+}
+
+=item cust_credited_pkgnum PKGNUM
+
+=item cust_credit_bill_pkgnum PKGNUM
+
+Returns all applied credits (see L<FS::cust_credit_bill>) for this invoice
+with matching pkgnum.
+
+=cut
+
+sub cust_credited_pkgnum {
+  my( $self, $pkgnum ) = @_;
+  map { $_ } #return $self->num_cust_credit_bill_pkgnum($pkgnum) unless wantarray;
+  sort { $a->_date <=> $b->_date }
+    qsearch( 'cust_credit_bill', { 'invnum' => $self->invnum,
+                                   'pkgnum' => $pkgnum,
+                                 }
+           );
+}
+
+sub cust_credit_bill_pkgnum {
+  shift->cust_credited_pkgnum(@_);
+}
+
 =item tax
 
 Returns the tax amount (see L<FS::cust_bill_pkg>) for this invoice.
@@ -340,751 +722,4404 @@ sub owed {
   $balance;
 }
 
-=item send
+sub owed_pkgnum {
+  my( $self, $pkgnum ) = @_;
 
-Sends this invoice to the destinations configured for this customer: send
-emails or print.  See L<FS::cust_main_invoice>.
+  #my $balance = $self->charged;
+  my $balance = 0;
+  $balance += $_->setup + $_->recur for $self->cust_bill_pkg_pkgnum($pkgnum);
 
-=cut
+  $balance -= $_->amount            for $self->cust_bill_pay_pkgnum($pkgnum);
+  $balance -= $_->amount            for $self->cust_credited_pkgnum($pkgnum);
 
-sub send {
-  my($self,$template) = @_;
-  my @print_text = $self->print_text('', $template);
-  my @invoicing_list = $self->cust_main->invoicing_list;
+  $balance = sprintf( "%.2f", $balance);
+  $balance =~ s/^\-0\.00$/0.00/; #yay ieee fp
+  $balance;
+}
 
-  if ( grep { $_ ne 'POST' } @invoicing_list or !@invoicing_list  ) { #email
-
-    #better to notify this person than silence
-    @invoicing_list = ($invoice_from) unless @invoicing_list;
-
-    #false laziness w/FS::cust_pay::delete & fs_signup_server && ::realtime_card
-    #$ENV{SMTPHOSTS} = $smtpmachine;
-    $ENV{MAILADDRESS} = $invoice_from;
-    my $header = new Mail::Header ( [
-      "From: $invoice_from",
-      "To: ". join(', ', grep { $_ ne 'POST' } @invoicing_list ),
-      "Sender: $invoice_from",
-      "Reply-To: $invoice_from",
-      "Date: ". time2str("%a, %d %b %Y %X %z", time),
-      "Subject: Invoice",
-    ] );
-    my $message = new Mail::Internet (
-      'Header' => $header,
-      'Body' => [ @print_text ], #( date)
-    );
-    $!=0;
-    $message->smtpsend( Host => $smtpmachine )
-      or $message->smtpsend( Host => $smtpmachine, Debug => 1 )
-        or return "(customer # ". $self->custnum. ") can't send invoice email".
-                  " to ". join(', ', grep { $_ ne 'POST' } @invoicing_list ).
-                  " via server $smtpmachine with SMTP: $!";
+=item apply_payments_and_credits [ OPTION => VALUE ... ]
 
-  }
+Applies unapplied payments and credits to this invoice.
 
-  if ( grep { $_ eq 'POST' } @invoicing_list ) { #postal
-    open(LPR, "|$lpr")
-      or return "Can't open pipe to $lpr: $!";
-    print LPR @print_text;
-    close LPR
-      or return $! ? "Error closing $lpr: $!"
-                   : "Exit status $? from $lpr";
-  }
+A hash of optional arguments may be passed.  Currently "manual" is supported.
+If true, a payment receipt is sent instead of a statement when
+'payment_receipt_email' configuration option is set.
 
-  '';
+If there is an error, returns the error, otherwise returns false.
 
-}
+=cut
 
-=item send_csv OPTIONS
+sub apply_payments_and_credits {
+  my( $self, %options ) = @_;
 
-Sends invoice as a CSV data-file to a remote host with the specified protocol.
+  local $SIG{HUP} = 'IGNORE';
+  local $SIG{INT} = 'IGNORE';
+  local $SIG{QUIT} = 'IGNORE';
+  local $SIG{TERM} = 'IGNORE';
+  local $SIG{TSTP} = 'IGNORE';
+  local $SIG{PIPE} = 'IGNORE';
 
-Options are:
+  my $oldAutoCommit = $FS::UID::AutoCommit;
+  local $FS::UID::AutoCommit = 0;
+  my $dbh = dbh;
 
-protocol - currently only "ftp"
-server
-username
-password
-dir
+  $self->select_for_update; #mutex
 
-The file will be named "N-YYYYMMDDHHMMSS.csv" where N is the invoice number
-and YYMMDDHHMMSS is a timestamp.
+  my @payments = grep { $_->unapplied > 0 } $self->cust_main->cust_pay;
+  my @credits  = grep { $_->credited > 0 } $self->cust_main->cust_credit;
 
-The fields of the CSV file is as follows:
+  if ( $conf->exists('pkg-balances') ) {
+    # limit @payments & @credits to those w/ a pkgnum grepped from $self
+    my %pkgnums = map { $_ => 1 } map $_->pkgnum, $self->cust_bill_pkg;
+    @payments = grep { ! $_->pkgnum || $pkgnums{$_->pkgnum} } @payments;
+    @credits  = grep { ! $_->pkgnum || $pkgnums{$_->pkgnum} } @credits;
+  }
 
-record_type, invnum, custnum, _date, charged, first, last, company, address1, address2, city, state, zip, country, pkg, setup, recur, sdate, edate
+  while ( $self->owed > 0 and ( @payments || @credits ) ) {
+
+    my $app = '';
+    if ( @payments && @credits ) {
+
+      #decide which goes first by weight of top (unapplied) line item
+
+      my @open_lineitems = $self->open_cust_bill_pkg;
+
+      my $max_pay_weight =
+        max( map  { $_->part_pkg->pay_weight || 0 }
+             grep { $_ }
+             map  { $_->cust_pkg }
+	          @open_lineitems
+	   );
+      my $max_credit_weight =
+        max( map  { $_->part_pkg->credit_weight || 0 }
+	     grep { $_ } 
+             map  { $_->cust_pkg }
+                  @open_lineitems
+           );
+
+      #if both are the same... payments first?  it has to be something
+      if ( $max_pay_weight >= $max_credit_weight ) {
+        $app = 'pay';
+      } else {
+        $app = 'credit';
+      }
+    
+    } elsif ( @payments ) {
+      $app = 'pay';
+    } elsif ( @credits ) {
+      $app = 'credit';
+    } else {
+      die "guru meditation #12 and 35";
+    }
 
-=over 4
+    my $unapp_amount;
+    if ( $app eq 'pay' ) {
 
-=item record type - B<record_type> is either C<cust_bill> or C<cust_bill_pkg>
+      my $payment = shift @payments;
+      $unapp_amount = $payment->unapplied;
+      $app = new FS::cust_bill_pay { 'paynum'  => $payment->paynum };
+      $app->pkgnum( $payment->pkgnum )
+        if $conf->exists('pkg-balances') && $payment->pkgnum;
 
-If B<record_type> is C<cust_bill>, this is a primary invoice record.  The
-last five fields (B<pkg> through B<edate>) are irrelevant, and all other
-fields are filled in.
+    } elsif ( $app eq 'credit' ) {
 
-If B<record_type> is C<cust_bill_pkg>, this is a line item record.  Only the
-first two fields (B<record_type> and B<invnum>) and the last five fields
-(B<pkg> through B<edate>) are filled in.
+      my $credit = shift @credits;
+      $unapp_amount = $credit->credited;
+      $app = new FS::cust_credit_bill { 'crednum' => $credit->crednum };
+      $app->pkgnum( $credit->pkgnum )
+        if $conf->exists('pkg-balances') && $credit->pkgnum;
 
-=item invnum - invoice number
+    } else {
+      die "guru meditation #12 and 35";
+    }
 
-=item custnum - customer number
+    my $owed;
+    if ( $conf->exists('pkg-balances') && $app->pkgnum ) {
+      warn "owed_pkgnum ". $app->pkgnum;
+      $owed = $self->owed_pkgnum($app->pkgnum);
+    } else {
+      $owed = $self->owed;
+    }
+    next unless $owed > 0;
 
-=item _date - invoice date
+    warn "min ( $unapp_amount, $owed )\n" if $DEBUG;
+    $app->amount( sprintf('%.2f', min( $unapp_amount, $owed ) ) );
 
-=item charged - total invoice amount
+    $app->invnum( $self->invnum );
 
-=item first - customer first name
+    my $error = $app->insert(%options);
+    if ( $error ) {
+      $dbh->rollback if $oldAutoCommit;
+      return "Error inserting ". $app->table. " record: $error";
+    }
+    die $error if $error;
 
-=item last - customer first name
+  }
 
-=item company - company name
+  $dbh->commit or die $dbh->errstr if $oldAutoCommit;
+  ''; #no error
 
-=item address1 - address line 1
+}
 
-=item address2 - address line 1
+=item generate_email OPTION => VALUE ...
 
-=item city
+Options:
 
-=item state
+=over 4
 
-=item zip
+=item from
 
-=item country
+sender address, required
 
-=item pkg - line item description
+=item tempate
 
-=item setup - line item setup fee (one or both of B<setup> and B<recur> will be defined)
+alternate template name, optional
 
-=item recur - line item recurring fee (one or both of B<setup> and B<recur> will be defined)
+=item print_text
 
-=item sdate - start date for recurring fee
+text attachment arrayref, optional
 
-=item edate - end date for recurring fee
+=item subject
+
+email subject, optional
+
+=item notice_name
+
+notice name instead of "Invoice", optional
 
 =back
 
-=cut
+Returns an argument list to be passed to L<FS::Misc::send_email>.
 
-sub send_csv {
-  my($self, %opt) = @_;
+=cut
 
-  #part one: create file
+use MIME::Entity;
 
-  my $spooldir = "/usr/local/etc/freeside/export.". datasrc. "/cust_bill";
-  mkdir $spooldir, 0700 unless -d $spooldir;
+sub generate_email {
 
-  my $file = $spooldir. '/'. $self->invnum. time2str('-%Y%m%d%H%M%S.csv', time);
+  my $self = shift;
+  my %args = @_;
 
-  open(CSV, ">$file") or die "can't open $file: $!";
+  my $me = '[FS::cust_bill::generate_email]';
 
-  eval "use Text::CSV_XS";
-  die $@ if $@;
+  my %return = (
+    'from'      => $args{'from'},
+    'subject'   => (($args{'subject'}) ? $args{'subject'} : 'Invoice'),
+  );
 
-  my $csv = Text::CSV_XS->new({'always_quote'=>1});
+  my %opt = (
+    'unsquelch_cdr' => $conf->exists('voip-cdr_email'),
+    'template'      => $args{'template'},
+    'notice_name'   => ( $args{'notice_name'} || 'Invoice' ),
+  );
 
   my $cust_main = $self->cust_main;
 
-  $csv->combine(
-    'cust_bill',
-    $self->invnum,
-    $self->custnum,
-    time2str("%x", $self->_date),
-    sprintf("%.2f", $self->charged),
-    ( map { $cust_main->getfield($_) }
-        qw( first last company address1 address2 city state zip country ) ),
-    map { '' } (1..5),
-  ) or die "can't create csv";
-  print CSV $csv->string. "\n";
-
-  #new charges (false laziness w/print_text)
-  foreach my $cust_bill_pkg ( $self->cust_bill_pkg ) {
+  if (ref($args{'to'}) eq 'ARRAY') {
+    $return{'to'} = $args{'to'};
+  } else {
+    $return{'to'} = [ grep { $_ !~ /^(POST|FAX)$/ }
+                           $cust_main->invoicing_list
+                    ];
+  }
 
-    my($pkg, $setup, $recur, $sdate, $edate);
-    if ( $cust_bill_pkg->pkgnum ) {
-    
-      ($pkg, $setup, $recur, $sdate, $edate) = (
-        $cust_bill_pkg->cust_pkg->part_pkg->pkg,
-        ( $cust_bill_pkg->setup != 0
-          ? sprintf("%.2f", $cust_bill_pkg->setup )
-          : '' ),
-        ( $cust_bill_pkg->recur != 0
-          ? sprintf("%.2f", $cust_bill_pkg->recur )
-          : '' ),
-        time2str("%x", $cust_bill_pkg->sdate),
-        time2str("%x", $cust_bill_pkg->edate),
-      );
+  if ( $conf->exists('invoice_html') ) {
 
-    } else { #pkgnum tax
-      next unless $cust_bill_pkg->setup != 0;
-      my $itemdesc = defined $cust_bill_pkg->dbdef_table->column('itemdesc')
-                       ? ( $cust_bill_pkg->itemdesc || 'Tax' )
-                       : 'Tax';
-      ($pkg, $setup, $recur, $sdate, $edate) =
-        ( $itemdesc, sprintf("%10.2f",$cust_bill_pkg->setup), '', '', '' );
+    warn "$me creating HTML/text multipart message"
+      if $DEBUG;
+
+    $return{'nobody'} = 1;
+
+    my $alternative = build MIME::Entity
+      'Type'        => 'multipart/alternative',
+      'Encoding'    => '7bit',
+      'Disposition' => 'inline'
+    ;
+
+    my $data;
+    if ( $conf->exists('invoice_email_pdf')
+         and scalar($conf->config('invoice_email_pdf_note')) ) {
+
+      warn "$me using 'invoice_email_pdf_note' in multipart message"
+        if $DEBUG;
+      $data = [ map { $_ . "\n" }
+                    $conf->config('invoice_email_pdf_note')
+              ];
+
+    } else {
+
+      warn "$me not using 'invoice_email_pdf_note' in multipart message"
+        if $DEBUG;
+      if ( ref($args{'print_text'}) eq 'ARRAY' ) {
+        $data = $args{'print_text'};
+      } else {
+        $data = [ $self->print_text(\%opt) ];
+      }
+
+    }
+
+    $alternative->attach(
+      'Type'        => 'text/plain',
+      #'Encoding'    => 'quoted-printable',
+      'Encoding'    => '7bit',
+      'Data'        => $data,
+      'Disposition' => 'inline',
+    );
+
+    $args{'from'} =~ /\@([\w\.\-]+)/;
+    my $from = $1 || 'example.com';
+    my $content_id = join('.', rand()*(2**32), $$, time). "\@$from";
+
+    my $logo;
+    my $agentnum = $cust_main->agentnum;
+    if ( defined($args{'template'}) && length($args{'template'})
+         && $conf->exists( 'logo_'. $args{'template'}. '.png', $agentnum )
+       )
+    {
+      $logo = 'logo_'. $args{'template'}. '.png';
+    } else {
+      $logo = "logo.png";
+    }
+    my $image_data = $conf->config_binary( $logo, $agentnum);
+
+    my $image = build MIME::Entity
+      'Type'       => 'image/png',
+      'Encoding'   => 'base64',
+      'Data'       => $image_data,
+      'Filename'   => 'logo.png',
+      'Content-ID' => "<$content_id>",
+    ;
+   
+    my $barcode;
+    if($conf->exists('invoice-barcode')){
+	my $barcode_content_id = join('.', rand()*(2**32), $$, time). "\@$from";
+	$barcode = build MIME::Entity
+	  'Type'       => 'image/png',
+	  'Encoding'   => 'base64',
+	  'Data'       => $self->invoice_barcode(0),
+	  'Filename'   => 'barcode.png',
+	  'Content-ID' => "<$barcode_content_id>",
+	;
+	$opt{'barcode_cid'} = $barcode_content_id;
+    }
+
+    $alternative->attach(
+      'Type'        => 'text/html',
+      'Encoding'    => 'quoted-printable',
+      'Data'        => [ '<html>',
+                         '  <head>',
+                         '    <title>',
+                         '      '. encode_entities($return{'subject'}), 
+                         '    </title>',
+                         '  </head>',
+                         '  <body bgcolor="#e8e8e8">',
+                         $self->print_html({ 'cid'=>$content_id, %opt }),
+                         '  </body>',
+                         '</html>',
+                       ],
+      'Disposition' => 'inline',
+      #'Filename'    => 'invoice.pdf',
+    );
+
+    my @otherparts = ();
+    if ( $cust_main->email_csv_cdr ) {
+
+      push @otherparts, build MIME::Entity
+        'Type'        => 'text/csv',
+        'Encoding'    => '7bit',
+        'Data'        => [ map { "$_\n" }
+                             $self->call_details('prepend_billed_number' => 1)
+                         ],
+        'Disposition' => 'attachment',
+        'Filename'    => 'usage-'. $self->invnum. '.csv',
+      ;
+
+    }
+
+    if ( $conf->exists('invoice_email_pdf') ) {
+
+      #attaching pdf too:
+      # multipart/mixed
+      #   multipart/related
+      #     multipart/alternative
+      #       text/plain
+      #       text/html
+      #     image/png
+      #   application/pdf
+
+      my $related = build MIME::Entity 'Type'     => 'multipart/related',
+                                       'Encoding' => '7bit';
+
+      #false laziness w/Misc::send_email
+      $related->head->replace('Content-type',
+        $related->mime_type.
+        '; boundary="'. $related->head->multipart_boundary. '"'.
+        '; type=multipart/alternative'
+      );
+
+      $related->add_part($alternative);
+
+      $related->add_part($image);
+
+      my $pdf = build MIME::Entity $self->mimebuild_pdf(\%opt);
+
+      $return{'mimeparts'} = [ $related, $pdf, @otherparts ];
+
+    } else {
+
+      #no other attachment:
+      # multipart/related
+      #   multipart/alternative
+      #     text/plain
+      #     text/html
+      #   image/png
+
+      $return{'content-type'} = 'multipart/related';
+      if($conf->exists('invoice-barcode')){
+	  $return{'mimeparts'} = [ $alternative, $image, $barcode, @otherparts ];
+      }
+      else {
+	  $return{'mimeparts'} = [ $alternative, $image, @otherparts ];
+      }
+      $return{'type'} = 'multipart/alternative'; #Content-Type of first part...
+      #$return{'disposition'} = 'inline';
+
+    }
+  
+  } else {
+
+    if ( $conf->exists('invoice_email_pdf') ) {
+      warn "$me creating PDF attachment"
+        if $DEBUG;
+
+      #mime parts arguments a la MIME::Entity->build().
+      $return{'mimeparts'} = [
+        { $self->mimebuild_pdf(\%opt) }
+      ];
+    }
+  
+    if ( $conf->exists('invoice_email_pdf')
+         and scalar($conf->config('invoice_email_pdf_note')) ) {
+
+      warn "$me using 'invoice_email_pdf_note'"
+        if $DEBUG;
+      $return{'body'} = [ map { $_ . "\n" }
+                              $conf->config('invoice_email_pdf_note')
+                        ];
+
+    } else {
+
+      warn "$me not using 'invoice_email_pdf_note'"
+        if $DEBUG;
+      if ( ref($args{'print_text'}) eq 'ARRAY' ) {
+        $return{'body'} = $args{'print_text'};
+      } else {
+        $return{'body'} = [ $self->print_text(\%opt) ];
+      }
+
+    }
+
+  }
+
+  %return;
+
+}
+
+=item mimebuild_pdf
+
+Returns a list suitable for passing to MIME::Entity->build(), representing
+this invoice as PDF attachment.
+
+=cut
+
+sub mimebuild_pdf {
+  my $self = shift;
+  (
+    'Type'        => 'application/pdf',
+    'Encoding'    => 'base64',
+    'Data'        => [ $self->print_pdf(@_) ],
+    'Disposition' => 'attachment',
+    'Filename'    => 'invoice-'. $self->invnum. '.pdf',
+  );
+}
+
+=item send HASHREF | [ TEMPLATE [ , AGENTNUM [ , INVOICE_FROM [ , AMOUNT ] ] ] ]
+
+Sends this invoice to the destinations configured for this customer: sends
+email, prints and/or faxes.  See L<FS::cust_main_invoice>.
+
+Options can be passed as a hashref (recommended) or as a list of up to 
+four values for templatename, agentnum, invoice_from and amount.
+
+I<template>, if specified, is the name of a suffix for alternate invoices.
+
+I<agentnum>, if specified, means that this invoice will only be sent for customers
+of the specified agent or agent(s).  AGENTNUM can be a scalar agentnum (for a
+single agent) or an arrayref of agentnums.
+
+I<invoice_from>, if specified, overrides the default email invoice From: address.
+
+I<amount>, if specified, only sends the invoice if the total amount owed on this
+invoice and all older invoices is greater than the specified amount.
+
+I<notice_name>, if specified, overrides "Invoice" as the name of the sent document (templates from 10/2009 or newer required)
+
+=cut
+
+sub queueable_send {
+  my %opt = @_;
+
+  my $self = qsearchs('cust_bill', { 'invnum' => $opt{invnum} } )
+    or die "invalid invoice number: " . $opt{invnum};
+
+  my @args = ( $opt{template}, $opt{agentnum} );
+  push @args, $opt{invoice_from}
+    if exists($opt{invoice_from}) && $opt{invoice_from};
+
+  my $error = $self->send( @args );
+  die $error if $error;
+
+}
+
+sub send {
+  my $self = shift;
+
+  my( $template, $invoice_from, $notice_name );
+  my $agentnums = '';
+  my $balance_over = 0;
+
+  if ( ref($_[0]) ) {
+    my $opt = shift;
+    $template = $opt->{'template'} || '';
+    if ( $agentnums = $opt->{'agentnum'} ) {
+      $agentnums = [ $agentnums ] unless ref($agentnums);
+    }
+    $invoice_from = $opt->{'invoice_from'};
+    $balance_over = $opt->{'balance_over'} if $opt->{'balance_over'};
+    $notice_name = $opt->{'notice_name'};
+  } else {
+    $template = scalar(@_) ? shift : '';
+    if ( scalar(@_) && $_[0]  ) {
+      $agentnums = ref($_[0]) ? shift : [ shift ];
+    }
+    $invoice_from = shift if scalar(@_);
+    $balance_over = shift if scalar(@_) && $_[0] !~ /^\s*$/;
+  }
+
+  return 'N/A' unless ! $agentnums
+                   or grep { $_ == $self->cust_main->agentnum } @$agentnums;
+
+  return ''
+    unless $self->cust_main->total_owed_date($self->_date) > $balance_over;
+
+  $invoice_from ||= $self->_agent_invoice_from ||    #XXX should go away
+                    $conf->config('invoice_from', $self->cust_main->agentnum );
+
+  my %opt = (
+    'template'     => $template,
+    'invoice_from' => $invoice_from,
+    'notice_name'  => ( $notice_name || 'Invoice' ),
+  );
+
+  my @invoicing_list = $self->cust_main->invoicing_list;
+
+  #$self->email_invoice(\%opt)
+  $self->email(\%opt)
+    if grep { $_ !~ /^(POST|FAX)$/ } @invoicing_list or !@invoicing_list;
+
+  #$self->print_invoice(\%opt)
+  $self->print(\%opt)
+    if grep { $_ eq 'POST' } @invoicing_list; #postal
+
+  $self->fax_invoice(\%opt)
+    if grep { $_ eq 'FAX' } @invoicing_list; #fax
+
+  '';
+
+}
+
+=item email HASHREF | [ TEMPLATE [ , INVOICE_FROM ] ] 
+
+Emails this invoice.
+
+Options can be passed as a hashref (recommended) or as a list of up to 
+two values for templatename and invoice_from.
+
+I<template>, if specified, is the name of a suffix for alternate invoices.
+
+I<invoice_from>, if specified, overrides the default email invoice From: address.
+
+I<notice_name>, if specified, overrides "Invoice" as the name of the sent document (templates from 10/2009 or newer required)
+
+=cut
+
+sub queueable_email {
+  my %opt = @_;
+
+  my $self = qsearchs('cust_bill', { 'invnum' => $opt{invnum} } )
+    or die "invalid invoice number: " . $opt{invnum};
+
+  my @args = ( $opt{template} );
+  push @args, $opt{invoice_from}
+    if exists($opt{invoice_from}) && $opt{invoice_from};
+
+  my $error = $self->email( @args );
+  die $error if $error;
+
+}
+
+#sub email_invoice {
+sub email {
+  my $self = shift;
+
+  my( $template, $invoice_from, $notice_name );
+  if ( ref($_[0]) ) {
+    my $opt = shift;
+    $template = $opt->{'template'} || '';
+    $invoice_from = $opt->{'invoice_from'};
+    $notice_name = $opt->{'notice_name'} || 'Invoice';
+  } else {
+    $template = scalar(@_) ? shift : '';
+    $invoice_from = shift if scalar(@_);
+    $notice_name = 'Invoice';
+  }
+
+  $invoice_from ||= $self->_agent_invoice_from ||    #XXX should go away
+                    $conf->config('invoice_from', $self->cust_main->agentnum );
+
+  my @invoicing_list = grep { $_ !~ /^(POST|FAX)$/ } 
+                            $self->cust_main->invoicing_list;
+
+  if ( ! @invoicing_list ) { #no recipients
+    if ( $conf->exists('cust_bill-no_recipients-error') ) {
+      die 'No recipients for customer #'. $self->custnum;
+    } else {
+      #default: better to notify this person than silence
+      @invoicing_list = ($invoice_from);
+    }
+  }
+
+  my $subject = $self->email_subject($template);
+
+  my $error = send_email(
+    $self->generate_email(
+      'from'        => $invoice_from,
+      'to'          => [ grep { $_ !~ /^(POST|FAX)$/ } @invoicing_list ],
+      'subject'     => $subject,
+      'template'    => $template,
+      'notice_name' => $notice_name,
+    )
+  );
+  die "can't email invoice: $error\n" if $error;
+  #die "$error\n" if $error;
+
+}
+
+sub email_subject {
+  my $self = shift;
+
+  #my $template = scalar(@_) ? shift : '';
+  #per-template?
+
+  my $subject = $conf->config('invoice_subject', $self->cust_main->agentnum)
+                || 'Invoice';
+
+  my $cust_main = $self->cust_main;
+  my $name = $cust_main->name;
+  my $name_short = $cust_main->name_short;
+  my $invoice_number = $self->invnum;
+  my $invoice_date = $self->_date_pretty;
+
+  eval qq("$subject");
+}
+
+=item lpr_data HASHREF | [ TEMPLATE ]
+
+Returns the postscript or plaintext for this invoice as an arrayref.
+
+Options can be passed as a hashref (recommended) or as a single optional value
+for template.
+
+I<template>, if specified, is the name of a suffix for alternate invoices.
+
+I<notice_name>, if specified, overrides "Invoice" as the name of the sent document (templates from 10/2009 or newer required)
+
+=cut
+
+sub lpr_data {
+  my $self = shift;
+  my( $template, $notice_name );
+  if ( ref($_[0]) ) {
+    my $opt = shift;
+    $template = $opt->{'template'} || '';
+    $notice_name = $opt->{'notice_name'} || 'Invoice';
+  } else {
+    $template = scalar(@_) ? shift : '';
+    $notice_name = 'Invoice';
+  }
+
+  my %opt = (
+    'template'    => $template,
+    'notice_name' => $notice_name,
+  );
+
+  my $method = $conf->exists('invoice_latex') ? 'print_ps' : 'print_text';
+  [ $self->$method( \%opt ) ];
+}
+
+=item print HASHREF | [ TEMPLATE ]
+
+Prints this invoice.
+
+Options can be passed as a hashref (recommended) or as a single optional
+value for template.
+
+I<template>, if specified, is the name of a suffix for alternate invoices.
+
+I<notice_name>, if specified, overrides "Invoice" as the name of the sent document (templates from 10/2009 or newer required)
+
+=cut
+
+#sub print_invoice {
+sub print {
+  my $self = shift;
+  my( $template, $notice_name );
+  if ( ref($_[0]) ) {
+    my $opt = shift;
+    $template = $opt->{'template'} || '';
+    $notice_name = $opt->{'notice_name'} || 'Invoice';
+  } else {
+    $template = scalar(@_) ? shift : '';
+    $notice_name = 'Invoice';
+  }
+
+  my %opt = (
+    'template'    => $template,
+    'notice_name' => $notice_name,
+  );
+
+  if($conf->exists('invoice_print_pdf')) {
+    # Add the invoice to the current batch.
+    $self->batch_invoice(\%opt);
+  }
+  else {
+    do_print $self->lpr_data(\%opt);
+  }
+}
+
+=item fax_invoice HASHREF | [ TEMPLATE ] 
+
+Faxes this invoice.
+
+Options can be passed as a hashref (recommended) or as a single optional
+value for template.
+
+I<template>, if specified, is the name of a suffix for alternate invoices.
+
+I<notice_name>, if specified, overrides "Invoice" as the name of the sent document (templates from 10/2009 or newer required)
+
+=cut
+
+sub fax_invoice {
+  my $self = shift;
+  my( $template, $notice_name );
+  if ( ref($_[0]) ) {
+    my $opt = shift;
+    $template = $opt->{'template'} || '';
+    $notice_name = $opt->{'notice_name'} || 'Invoice';
+  } else {
+    $template = scalar(@_) ? shift : '';
+    $notice_name = 'Invoice';
+  }
+
+  die 'FAX invoice destination not (yet?) supported with plain text invoices.'
+    unless $conf->exists('invoice_latex');
+
+  my $dialstring = $self->cust_main->getfield('fax');
+  #Check $dialstring?
+
+  my %opt = (
+    'template'    => $template,
+    'notice_name' => $notice_name,
+  );
+
+  my $error = send_fax( 'docdata'    => $self->lpr_data(\%opt),
+                        'dialstring' => $dialstring,
+                      );
+  die $error if $error;
+
+}
+
+=item batch_invoice [ HASHREF ]
+
+Place this invoice into the open batch (see C<FS::bill_batch>).  If there 
+isn't an open batch, one will be created.
+
+=cut
+
+sub batch_invoice {
+  my ($self, $opt) = @_;
+  my $batch = FS::bill_batch->get_open_batch;
+  my $cust_bill_batch = FS::cust_bill_batch->new({
+      batchnum => $batch->batchnum,
+      invnum   => $self->invnum,
+  });
+  return $cust_bill_batch->insert($opt);
+}
+
+=item ftp_invoice [ TEMPLATENAME ] 
+
+Sends this invoice data via FTP.
+
+TEMPLATENAME is unused?
+
+=cut
+
+sub ftp_invoice {
+  my $self = shift;
+  my $template = scalar(@_) ? shift : '';
+
+  $self->send_csv(
+    'protocol'   => 'ftp',
+    'server'     => $conf->config('cust_bill-ftpserver'),
+    'username'   => $conf->config('cust_bill-ftpusername'),
+    'password'   => $conf->config('cust_bill-ftppassword'),
+    'dir'        => $conf->config('cust_bill-ftpdir'),
+    'format'     => $conf->config('cust_bill-ftpformat'),
+  );
+}
+
+=item spool_invoice [ TEMPLATENAME ] 
+
+Spools this invoice data (see L<FS::spool_csv>)
+
+TEMPLATENAME is unused?
+
+=cut
+
+sub spool_invoice {
+  my $self = shift;
+  my $template = scalar(@_) ? shift : '';
+
+  $self->spool_csv(
+    'format'       => $conf->config('cust_bill-spoolformat'),
+    'agent_spools' => $conf->exists('cust_bill-spoolagent'),
+  );
+}
+
+=item send_if_newest [ TEMPLATENAME [ , AGENTNUM [ , INVOICE_FROM ] ] ]
+
+Like B<send>, but only sends the invoice if it is the newest open invoice for
+this customer.
+
+=cut
+
+sub send_if_newest {
+  my $self = shift;
+
+  return ''
+    if scalar(
+               grep { $_->owed > 0 } 
+                    qsearch('cust_bill', {
+                      'custnum' => $self->custnum,
+                      #'_date'   => { op=>'>', value=>$self->_date },
+                      'invnum'  => { op=>'>', value=>$self->invnum },
+                    } )
+             );
+    
+  $self->send(@_);
+}
+
+=item send_csv OPTION => VALUE, ...
+
+Sends invoice as a CSV data-file to a remote host with the specified protocol.
+
+Options are:
+
+protocol - currently only "ftp"
+server
+username
+password
+dir
+
+The file will be named "N-YYYYMMDDHHMMSS.csv" where N is the invoice number
+and YYMMDDHHMMSS is a timestamp.
+
+See L</print_csv> for a description of the output format.
+
+=cut
+
+sub send_csv {
+  my($self, %opt) = @_;
+
+  #create file(s)
+
+  my $spooldir = "/usr/local/etc/freeside/export.". datasrc. "/cust_bill";
+  mkdir $spooldir, 0700 unless -d $spooldir;
+
+  my $tracctnum = $self->invnum. time2str('-%Y%m%d%H%M%S', time);
+  my $file = "$spooldir/$tracctnum.csv";
+  
+  my ( $header, $detail ) = $self->print_csv(%opt, 'tracctnum' => $tracctnum );
+
+  open(CSV, ">$file") or die "can't open $file: $!";
+  print CSV $header;
+
+  print CSV $detail;
+
+  close CSV;
+
+  my $net;
+  if ( $opt{protocol} eq 'ftp' ) {
+    eval "use Net::FTP;";
+    die $@ if $@;
+    $net = Net::FTP->new($opt{server}) or die @$;
+  } else {
+    die "unknown protocol: $opt{protocol}";
+  }
+
+  $net->login( $opt{username}, $opt{password} )
+    or die "can't FTP to $opt{username}\@$opt{server}: login error: $@";
+
+  $net->binary or die "can't set binary mode";
+
+  $net->cwd($opt{dir}) or die "can't cwd to $opt{dir}";
+
+  $net->put($file) or die "can't put $file: $!";
+
+  $net->quit;
+
+  unlink $file;
+
+}
+
+=item spool_csv
+
+Spools CSV invoice data.
+
+Options are:
+
+=over 4
+
+=item format - 'default' or 'billco'
+
+=item dest - if set (to POST, EMAIL or FAX), only sends spools invoices if the customer has the corresponding invoice destinations set (see L<FS::cust_main_invoice>).
+
+=item agent_spools - if set to a true value, will spool to per-agent files rather than a single global file
+
+=item balanceover - if set, only spools the invoice if the total amount owed on this invoice and all older invoices is greater than the specified amount.
+
+=back
+
+=cut
+
+sub spool_csv {
+  my($self, %opt) = @_;
+
+  my $cust_main = $self->cust_main;
+
+  if ( $opt{'dest'} ) {
+    my %invoicing_list = map { /^(POST|FAX)$/ or 'EMAIL' =~ /^(.*)$/; $1 => 1 }
+                             $cust_main->invoicing_list;
+    return 'N/A' unless $invoicing_list{$opt{'dest'}}
+                     || ! keys %invoicing_list;
+  }
+
+  if ( $opt{'balanceover'} ) {
+    return 'N/A'
+      if $cust_main->total_owed_date($self->_date) < $opt{'balanceover'};
+  }
+
+  my $spooldir = "/usr/local/etc/freeside/export.". datasrc. "/cust_bill";
+  mkdir $spooldir, 0700 unless -d $spooldir;
+
+  my $tracctnum = $self->invnum. time2str('-%Y%m%d%H%M%S', time);
+
+  my $file =
+    "$spooldir/".
+    ( $opt{'agent_spools'} ? 'agentnum'.$cust_main->agentnum : 'spool' ).
+    ( lc($opt{'format'}) eq 'billco' ? '-header' : '' ) .
+    '.csv';
+  
+  my ( $header, $detail ) = $self->print_csv(%opt, 'tracctnum' => $tracctnum );
+
+  open(CSV, ">>$file") or die "can't open $file: $!";
+  flock(CSV, LOCK_EX);
+  seek(CSV, 0, 2);
+
+  print CSV $header;
+
+  if ( lc($opt{'format'}) eq 'billco' ) {
+
+    flock(CSV, LOCK_UN);
+    close CSV;
+
+    $file =
+      "$spooldir/".
+      ( $opt{'agent_spools'} ? 'agentnum'.$cust_main->agentnum : 'spool' ).
+      '-detail.csv';
+
+    open(CSV,">>$file") or die "can't open $file: $!";
+    flock(CSV, LOCK_EX);
+    seek(CSV, 0, 2);
+  }
+
+  print CSV $detail;
+
+  flock(CSV, LOCK_UN);
+  close CSV;
+
+  return '';
+
+}
+
+=item print_csv OPTION => VALUE, ...
+
+Returns CSV data for this invoice.
+
+Options are:
+
+format - 'default' or 'billco'
+
+Returns a list consisting of two scalars.  The first is a single line of CSV
+header information for this invoice.  The second is one or more lines of CSV
+detail information for this invoice.
+
+If I<format> is not specified or "default", the fields of the CSV file are as
+follows:
+
+record_type, invnum, custnum, _date, charged, first, last, company, address1, address2, city, state, zip, country, pkg, setup, recur, sdate, edate
+
+=over 4
+
+=item record type - B<record_type> is either C<cust_bill> or C<cust_bill_pkg>
+
+B<record_type> is C<cust_bill> for the initial header line only.  The
+last five fields (B<pkg> through B<edate>) are irrelevant, and all other
+fields are filled in.
+
+B<record_type> is C<cust_bill_pkg> for detail lines.  Only the first two fields
+(B<record_type> and B<invnum>) and the last five fields (B<pkg> through B<edate>)
+are filled in.
+
+=item invnum - invoice number
+
+=item custnum - customer number
+
+=item _date - invoice date
+
+=item charged - total invoice amount
+
+=item first - customer first name
+
+=item last - customer first name
+
+=item company - company name
+
+=item address1 - address line 1
+
+=item address2 - address line 1
+
+=item city
+
+=item state
+
+=item zip
+
+=item country
+
+=item pkg - line item description
+
+=item setup - line item setup fee (one or both of B<setup> and B<recur> will be defined)
+
+=item recur - line item recurring fee (one or both of B<setup> and B<recur> will be defined)
+
+=item sdate - start date for recurring fee
+
+=item edate - end date for recurring fee
+
+=back
+
+If I<format> is "billco", the fields of the header CSV file are as follows:
+
+  +-------------------------------------------------------------------+
+  |                        FORMAT HEADER FILE                         |
+  |-------------------------------------------------------------------|
+  | Field | Description                   | Name       | Type | Width |
+  | 1     | N/A-Leave Empty               | RC         | CHAR |     2 |
+  | 2     | N/A-Leave Empty               | CUSTID     | CHAR |    15 |
+  | 3     | Transaction Account No        | TRACCTNUM  | CHAR |    15 |
+  | 4     | Transaction Invoice No        | TRINVOICE  | CHAR |    15 |
+  | 5     | Transaction Zip Code          | TRZIP      | CHAR |     5 |
+  | 6     | Transaction Company Bill To   | TRCOMPANY  | CHAR |    30 |
+  | 7     | Transaction Contact Bill To   | TRNAME     | CHAR |    30 |
+  | 8     | Additional Address Unit Info  | TRADDR1    | CHAR |    30 |
+  | 9     | Bill To Street Address        | TRADDR2    | CHAR |    30 |
+  | 10    | Ancillary Billing Information | TRADDR3    | CHAR |    30 |
+  | 11    | Transaction City Bill To      | TRCITY     | CHAR |    20 |
+  | 12    | Transaction State Bill To     | TRSTATE    | CHAR |     2 |
+  | 13    | Bill Cycle Close Date         | CLOSEDATE  | CHAR |    10 |
+  | 14    | Bill Due Date                 | DUEDATE    | CHAR |    10 |
+  | 15    | Previous Balance              | BALFWD     | NUM* |     9 |
+  | 16    | Pmt/CR Applied                | CREDAPPLY  | NUM* |     9 |
+  | 17    | Total Current Charges         | CURRENTCHG | NUM* |     9 |
+  | 18    | Total Amt Due                 | TOTALDUE   | NUM* |     9 |
+  | 19    | Total Amt Due                 | AMTDUE     | NUM* |     9 |
+  | 20    | 30 Day Aging                  | AMT30      | NUM* |     9 |
+  | 21    | 60 Day Aging                  | AMT60      | NUM* |     9 |
+  | 22    | 90 Day Aging                  | AMT90      | NUM* |     9 |
+  | 23    | Y/N                           | AGESWITCH  | CHAR |     1 |
+  | 24    | Remittance automation         | SCANLINE   | CHAR |   100 |
+  | 25    | Total Taxes & Fees            | TAXTOT     | NUM* |     9 |
+  | 26    | Customer Reference Number     | CUSTREF    | CHAR |    15 |
+  | 27    | Federal Tax***                | FEDTAX     | NUM* |     9 |
+  | 28    | State Tax***                  | STATETAX   | NUM* |     9 |
+  | 29    | Other Taxes & Fees***         | OTHERTAX   | NUM* |     9 |
+  +-------+-------------------------------+------------+------+-------+
+
+If I<format> is "billco", the fields of the detail CSV file are as follows:
+
+                                  FORMAT FOR DETAIL FILE
+        |                            |           |      |
+  Field | Description                | Name      | Type | Width
+  1     | N/A-Leave Empty            | RC        | CHAR |     2
+  2     | N/A-Leave Empty            | CUSTID    | CHAR |    15
+  3     | Account Number             | TRACCTNUM | CHAR |    15
+  4     | Invoice Number             | TRINVOICE | CHAR |    15
+  5     | Line Sequence (sort order) | LINESEQ   | NUM  |     6
+  6     | Transaction Detail         | DETAILS   | CHAR |   100
+  7     | Amount                     | AMT       | NUM* |     9
+  8     | Line Format Control**      | LNCTRL    | CHAR |     2
+  9     | Grouping Code              | GROUP     | CHAR |     2
+  10    | User Defined               | ACCT CODE | CHAR |    15
+
+=cut
+
+sub print_csv {
+  my($self, %opt) = @_;
+  
+  eval "use Text::CSV_XS";
+  die $@ if $@;
+
+  my $cust_main = $self->cust_main;
+
+  my $csv = Text::CSV_XS->new({'always_quote'=>1});
+
+  if ( lc($opt{'format'}) eq 'billco' ) {
+
+    my $taxtotal = 0;
+    $taxtotal += $_->{'amount'} foreach $self->_items_tax;
+
+    my $duedate = $self->due_date2str('%m/%d/%Y'); #date_format?
+
+    my( $previous_balance, @unused ) = $self->previous; #previous balance
+
+    my $pmt_cr_applied = 0;
+    $pmt_cr_applied += $_->{'amount'}
+      foreach ( $self->_items_payments, $self->_items_credits ) ;
+
+    my $totaldue = sprintf('%.2f', $self->owed + $previous_balance);
+
+    $csv->combine(
+      '',                         #  1 | N/A-Leave Empty               CHAR   2
+      '',                         #  2 | N/A-Leave Empty               CHAR  15
+      $opt{'tracctnum'},          #  3 | Transaction Account No        CHAR  15
+      $self->invnum,              #  4 | Transaction Invoice No        CHAR  15
+      $cust_main->zip,            #  5 | Transaction Zip Code          CHAR   5
+      $cust_main->company,        #  6 | Transaction Company Bill To   CHAR  30
+      #$cust_main->payname,        #  7 | Transaction Contact Bill To   CHAR  30
+      $cust_main->contact,        #  7 | Transaction Contact Bill To   CHAR  30
+      $cust_main->address2,       #  8 | Additional Address Unit Info  CHAR  30
+      $cust_main->address1,       #  9 | Bill To Street Address        CHAR  30
+      '',                         # 10 | Ancillary Billing Information CHAR  30
+      $cust_main->city,           # 11 | Transaction City Bill To      CHAR  20
+      $cust_main->state,          # 12 | Transaction State Bill To     CHAR   2
+
+      # XXX ?
+      time2str("%m/%d/%Y", $self->_date), # 13 | Bill Cycle Close Date CHAR  10
+
+      # XXX ?
+      $duedate,                   # 14 | Bill Due Date                 CHAR  10
+
+      $previous_balance,          # 15 | Previous Balance              NUM*   9
+      $pmt_cr_applied,            # 16 | Pmt/CR Applied                NUM*   9
+      sprintf("%.2f", $self->charged), # 17 | Total Current Charges    NUM*   9
+      $totaldue,                  # 18 | Total Amt Due                 NUM*   9
+      $totaldue,                  # 19 | Total Amt Due                 NUM*   9
+      '',                         # 20 | 30 Day Aging                  NUM*   9
+      '',                         # 21 | 60 Day Aging                  NUM*   9
+      '',                         # 22 | 90 Day Aging                  NUM*   9
+      'N',                        # 23 | Y/N                           CHAR   1
+      '',                         # 24 | Remittance automation         CHAR 100
+      $taxtotal,                  # 25 | Total Taxes & Fees            NUM*   9
+      $self->custnum,             # 26 | Customer Reference Number     CHAR  15
+      '0',                        # 27 | Federal Tax***                NUM*   9
+      sprintf("%.2f", $taxtotal), # 28 | State Tax***                  NUM*   9
+      '0',                        # 29 | Other Taxes & Fees***         NUM*   9
+    );
+
+  } else {
+  
+    $csv->combine(
+      'cust_bill',
+      $self->invnum,
+      $self->custnum,
+      time2str("%x", $self->_date),
+      sprintf("%.2f", $self->charged),
+      ( map { $cust_main->getfield($_) }
+          qw( first last company address1 address2 city state zip country ) ),
+      map { '' } (1..5),
+    ) or die "can't create csv";
+  }
+
+  my $header = $csv->string. "\n";
+
+  my $detail = '';
+  if ( lc($opt{'format'}) eq 'billco' ) {
+
+    my $lineseq = 0;
+    foreach my $item ( $self->_items_pkg ) {
+
+      $csv->combine(
+        '',                     #  1 | N/A-Leave Empty            CHAR   2
+        '',                     #  2 | N/A-Leave Empty            CHAR  15
+        $opt{'tracctnum'},      #  3 | Account Number             CHAR  15
+        $self->invnum,          #  4 | Invoice Number             CHAR  15
+        $lineseq++,             #  5 | Line Sequence (sort order) NUM    6
+        $item->{'description'}, #  6 | Transaction Detail         CHAR 100
+        $item->{'amount'},      #  7 | Amount                     NUM*   9
+        '',                     #  8 | Line Format Control**      CHAR   2
+        '',                     #  9 | Grouping Code              CHAR   2
+        '',                     # 10 | User Defined               CHAR  15
+      );
+
+      $detail .= $csv->string. "\n";
+
+    }
+
+  } else {
+
+    foreach my $cust_bill_pkg ( $self->cust_bill_pkg ) {
+
+      my($pkg, $setup, $recur, $sdate, $edate);
+      if ( $cust_bill_pkg->pkgnum ) {
+      
+        ($pkg, $setup, $recur, $sdate, $edate) = (
+          $cust_bill_pkg->part_pkg->pkg,
+          ( $cust_bill_pkg->setup != 0
+            ? sprintf("%.2f", $cust_bill_pkg->setup )
+            : '' ),
+          ( $cust_bill_pkg->recur != 0
+            ? sprintf("%.2f", $cust_bill_pkg->recur )
+            : '' ),
+          ( $cust_bill_pkg->sdate 
+            ? time2str("%x", $cust_bill_pkg->sdate)
+            : '' ),
+          ($cust_bill_pkg->edate 
+            ?time2str("%x", $cust_bill_pkg->edate)
+            : '' ),
+        );
+  
+      } else { #pkgnum tax
+        next unless $cust_bill_pkg->setup != 0;
+        $pkg = $cust_bill_pkg->desc;
+        $setup = sprintf('%10.2f', $cust_bill_pkg->setup );
+        ( $sdate, $edate ) = ( '', '' );
+      }
+  
+      $csv->combine(
+        'cust_bill_pkg',
+        $self->invnum,
+        ( map { '' } (1..11) ),
+        ($pkg, $setup, $recur, $sdate, $edate)
+      ) or die "can't create csv";
+
+      $detail .= $csv->string. "\n";
+
+    }
+
+  }
+
+  ( $header, $detail );
+
+}
+
+=item comp
+
+Pays this invoice with a compliemntary payment.  If there is an error,
+returns the error, otherwise returns false.
+
+=cut
+
+sub comp {
+  my $self = shift;
+  my $cust_pay = new FS::cust_pay ( {
+    'invnum'   => $self->invnum,
+    'paid'     => $self->owed,
+    '_date'    => '',
+    'payby'    => 'COMP',
+    'payinfo'  => $self->cust_main->payinfo,
+    'paybatch' => '',
+  } );
+  $cust_pay->insert;
+}
+
+=item realtime_card
+
+Attempts to pay this invoice with a credit card payment via a
+Business::OnlinePayment realtime gateway.  See
+http://search.cpan.org/search?mode=module&query=Business%3A%3AOnlinePayment
+for supported processors.
+
+=cut
+
+sub realtime_card {
+  my $self = shift;
+  $self->realtime_bop( 'CC', @_ );
+}
+
+=item realtime_ach
+
+Attempts to pay this invoice with an electronic check (ACH) payment via a
+Business::OnlinePayment realtime gateway.  See
+http://search.cpan.org/search?mode=module&query=Business%3A%3AOnlinePayment
+for supported processors.
+
+=cut
+
+sub realtime_ach {
+  my $self = shift;
+  $self->realtime_bop( 'ECHECK', @_ );
+}
+
+=item realtime_lec
+
+Attempts to pay this invoice with phone bill (LEC) payment via a
+Business::OnlinePayment realtime gateway.  See
+http://search.cpan.org/search?mode=module&query=Business%3A%3AOnlinePayment
+for supported processors.
+
+=cut
+
+sub realtime_lec {
+  my $self = shift;
+  $self->realtime_bop( 'LEC', @_ );
+}
+
+sub realtime_bop {
+  my( $self, $method ) = (shift,shift);
+  my %opt = @_;
+
+  my $cust_main = $self->cust_main;
+  my $balance = $cust_main->balance;
+  my $amount = ( $balance < $self->owed ) ? $balance : $self->owed;
+  $amount = sprintf("%.2f", $amount);
+  return "not run (balance $balance)" unless $amount > 0;
+
+  my $description = 'Internet Services';
+  if ( $conf->exists('business-onlinepayment-description') ) {
+    my $dtempl = $conf->config('business-onlinepayment-description');
+
+    my $agent_obj = $cust_main->agent
+      or die "can't retreive agent for $cust_main (agentnum ".
+             $cust_main->agentnum. ")";
+    my $agent = $agent_obj->agent;
+    my $pkgs = join(', ',
+      map { $_->part_pkg->pkg }
+        grep { $_->pkgnum } $self->cust_bill_pkg
+    );
+    $description = eval qq("$dtempl");
+  }
+
+  $cust_main->realtime_bop($method, $amount,
+    'description' => $description,
+    'invnum'      => $self->invnum,
+#this didn't do what we want, it just calls apply_payments_and_credits
+#    'apply'       => 1,
+    'apply_to_invoice' => 1,
+    %opt,
+ #what we want:
+ #this changes application behavior: auto payments
+                        #triggered against a specific invoice are now applied
+                        #to that invoice instead of oldest open.
+                        #seem okay to me...
+  );
+
+}
+
+=item batch_card OPTION => VALUE...
+
+Adds a payment for this invoice to the pending credit card batch (see
+L<FS::cust_pay_batch>), or, if the B<realtime> option is set to a true value,
+runs the payment using a realtime gateway.
+
+=cut
+
+sub batch_card {
+  my ($self, %options) = @_;
+  my $cust_main = $self->cust_main;
+
+  $options{invnum} = $self->invnum;
+  
+  $cust_main->batch_card(%options);
+}
+
+sub _agent_template {
+  my $self = shift;
+  $self->cust_main->agent_template;
+}
+
+sub _agent_invoice_from {
+  my $self = shift;
+  $self->cust_main->agent_invoice_from;
+}
+
+=item print_text HASHREF | [ TIME [ , TEMPLATE [ , OPTION => VALUE ... ] ] ]
+
+Returns an text invoice, as a list of lines.
+
+Options can be passed as a hashref (recommended) or as a list of time, template
+and then any key/value pairs for any other options.
+
+I<time>, if specified, is used to control the printing of overdue messages.  The
+default is now.  It isn't the date of the invoice; that's the `_date' field.
+It is specified as a UNIX timestamp; see L<perlfunc/"time">.  Also see
+L<Time::Local> and L<Date::Parse> for conversion functions.
+
+I<template>, if specified, is the name of a suffix for alternate invoices.
+
+I<notice_name>, if specified, overrides "Invoice" as the name of the sent document (templates from 10/2009 or newer required)
+
+=cut
+
+sub print_text {
+  my $self = shift;
+  my( $today, $template, %opt );
+  if ( ref($_[0]) ) {
+    %opt = %{ shift() };
+    $today = delete($opt{'time'}) || '';
+    $template = delete($opt{template}) || '';
+  } else {
+    ( $today, $template, %opt ) = @_;
+  }
+
+  my %params = ( 'format' => 'template' );
+  $params{'time'} = $today if $today;
+  $params{'template'} = $template if $template;
+  $params{$_} = $opt{$_} 
+    foreach grep $opt{$_}, qw( unsquealch_cdr notice_name );
+
+  $self->print_generic( %params );
+}
+
+=item print_latex HASHREF | [ TIME [ , TEMPLATE [ , OPTION => VALUE ... ] ] ]
+
+Internal method - returns a filename of a filled-in LaTeX template for this
+invoice (Note: add ".tex" to get the actual filename), and a filename of
+an associated logo (with the .eps extension included).
+
+See print_ps and print_pdf for methods that return PostScript and PDF output.
+
+Options can be passed as a hashref (recommended) or as a list of time, template
+and then any key/value pairs for any other options.
+
+I<time>, if specified, is used to control the printing of overdue messages.  The
+default is now.  It isn't the date of the invoice; that's the `_date' field.
+It is specified as a UNIX timestamp; see L<perlfunc/"time">.  Also see
+L<Time::Local> and L<Date::Parse> for conversion functions.
+
+I<template>, if specified, is the name of a suffix for alternate invoices.
+
+I<notice_name>, if specified, overrides "Invoice" as the name of the sent document (templates from 10/2009 or newer required)
+
+=cut
+
+sub print_latex {
+  my $self = shift;
+  my( $today, $template, %opt );
+  if ( ref($_[0]) ) {
+    %opt = %{ shift() };
+    $today = delete($opt{'time'}) || '';
+    $template = delete($opt{template}) || '';
+  } else {
+    ( $today, $template, %opt ) = @_;
+  }
+
+  my %params = ( 'format' => 'latex' );
+  $params{'time'} = $today if $today;
+  $params{'template'} = $template if $template;
+  $params{$_} = $opt{$_} 
+    foreach grep $opt{$_}, qw( unsquealch_cdr notice_name );
+
+  $template ||= $self->_agent_template;
+
+  my $dir = $FS::UID::conf_dir. "/cache.". $FS::UID::datasrc;
+  my $lh = new File::Temp( TEMPLATE => 'invoice.'. $self->invnum. '.XXXXXXXX',
+                           DIR      => $dir,
+                           SUFFIX   => '.eps',
+                           UNLINK   => 0,
+                         ) or die "can't open temp file: $!\n";
+
+  my $agentnum = $self->cust_main->agentnum;
+
+  if ( $template && $conf->exists("logo_${template}.eps", $agentnum) ) {
+    print $lh $conf->config_binary("logo_${template}.eps", $agentnum)
+      or die "can't write temp file: $!\n";
+  } else {
+    print $lh $conf->config_binary('logo.eps', $agentnum)
+      or die "can't write temp file: $!\n";
+  }
+  close $lh;
+  $params{'logo_file'} = $lh->filename;
+
+  if($conf->exists('invoice-barcode')){
+      my $png_file = $self->invoice_barcode($dir);
+      my $eps_file = $png_file;
+      $eps_file =~ s/\.png$/.eps/g;
+      $png_file =~ /(barcode.*png)/;
+      $png_file = $1;
+      $eps_file =~ /(barcode.*eps)/;
+      $eps_file = $1;
+
+      my $curr_dir = cwd();
+      chdir($dir); 
+      # after painfuly long experimentation, it was determined that sam2p won't
+      #	accept : and other chars in the path, no matter how hard I tried to
+      # escape them, hence the chdir (and chdir back, just to be safe)
+      system('sam2p', '-j:quiet', $png_file, 'EPS:', $eps_file ) == 0
+	or die "sam2p failed: $!\n";
+      unlink($png_file);
+      chdir($curr_dir);
+
+      $params{'barcode_file'} = $eps_file;
+  }
+
+  my @filled_in = $self->print_generic( %params );
+  
+  my $fh = new File::Temp( TEMPLATE => 'invoice.'. $self->invnum. '.XXXXXXXX',
+                           DIR      => $dir,
+                           SUFFIX   => '.tex',
+                           UNLINK   => 0,
+                         ) or die "can't open temp file: $!\n";
+  print $fh join('', @filled_in );
+  close $fh;
+
+  $fh->filename =~ /^(.*).tex$/ or die "unparsable filename: ". $fh->filename;
+  return ($1, $params{'logo_file'}, $params{'barcode_file'});
+
+}
+
+=item invoice_barcode DIR_OR_FALSE
+
+Generates an invoice barcode PNG. If DIR_OR_FALSE is a true value,
+it is taken as the temp directory where the PNG file will be generated and the
+PNG file name is returned. Otherwise, the PNG image itself is returned.
+
+=cut
+
+sub invoice_barcode {
+    my ($self, $dir) = (shift,shift);
+    
+    my $gdbar = new GD::Barcode('Code39',$self->invnum);
+	die "can't create barcode: " . $GD::Barcode::errStr unless $gdbar;
+    my $gd = $gdbar->plot(Height => 30);
+
+    if($dir) {
+	my $bh = new File::Temp( TEMPLATE => 'barcode.'. $self->invnum. '.XXXXXXXX',
+			   DIR      => $dir,
+			   SUFFIX   => '.png',
+			   UNLINK   => 0,
+			 ) or die "can't open temp file: $!\n";
+	print $bh $gd->png or die "cannot write barcode to file: $!\n";
+	my $png_file = $bh->filename;
+	close $bh;
+	return $png_file;
+    }
+    return $gd->png;
+}
+
+=item print_generic OPTION => VALUE ...
+
+Internal method - returns a filled-in template for this invoice as a scalar.
+
+See print_ps and print_pdf for methods that return PostScript and PDF output.
+
+Non optional options include 
+  format - latex, html, template
+
+Optional options include
+
+template - a value used as a suffix for a configuration template
+
+time - a value used to control the printing of overdue messages.  The
+default is now.  It isn't the date of the invoice; that's the `_date' field.
+It is specified as a UNIX timestamp; see L<perlfunc/"time">.  Also see
+L<Time::Local> and L<Date::Parse> for conversion functions.
+
+cid - 
+
+unsquelch_cdr - overrides any per customer cdr squelching when true
+
+notice_name - overrides "Invoice" as the name of the sent document (templates from 10/2009 or newer required)
+
+=cut
+
+#what's with all the sprintf('%10.2f')'s in here?  will it cause any
+# (alignment in text invoice?) problems to change them all to '%.2f' ?
+# yes: fixed width (dot matrix) text printing will be borked
+sub print_generic {
+
+  my( $self, %params ) = @_;
+  my $today = $params{today} ? $params{today} : time;
+  warn "$me print_generic called on $self with suffix $params{template}\n"
+    if $DEBUG;
+
+  my $format = $params{format};
+  die "Unknown format: $format"
+    unless $format =~ /^(latex|html|template)$/;
+
+  my $cust_main = $self->cust_main;
+  $cust_main->payname( $cust_main->first. ' '. $cust_main->getfield('last') )
+    unless $cust_main->payname
+        && $cust_main->payby !~ /^(CARD|DCRD|CHEK|DCHK)$/;
+
+  my %delimiters = ( 'latex'    => [ '[@--', '--@]' ],
+                     'html'     => [ '<%=', '%>' ],
+                     'template' => [ '{', '}' ],
+                   );
+
+  warn "$me print_generic creating template\n"
+    if $DEBUG > 1;
+
+  #create the template
+  my $template = $params{template} ? $params{template} : $self->_agent_template;
+  my $templatefile = "invoice_$format";
+  $templatefile .= "_$template"
+    if length($template);
+  my @invoice_template = map "$_\n", $conf->config($templatefile)
+    or die "cannot load config data $templatefile";
+
+  my $old_latex = '';
+  if ( $format eq 'latex' && grep { /^%%Detail/ } @invoice_template ) {
+    #change this to a die when the old code is removed
+    warn "old-style invoice template $templatefile; ".
+         "patch with conf/invoice_latex.diff or use new conf/invoice_latex*\n";
+    $old_latex = 'true';
+    @invoice_template = _translate_old_latex_format(@invoice_template);
+  } 
+
+  warn "$me print_generic creating T:T object\n"
+    if $DEBUG > 1;
+
+  my $text_template = new Text::Template(
+    TYPE => 'ARRAY',
+    SOURCE => \@invoice_template,
+    DELIMITERS => $delimiters{$format},
+  );
+
+  warn "$me print_generic compiling T:T object\n"
+    if $DEBUG > 1;
+
+  $text_template->compile()
+    or die "Can't compile $templatefile: $Text::Template::ERROR\n";
+
+
+  # additional substitution could possibly cause breakage in existing templates
+  my %convert_maps = ( 
+    'latex' => {
+                 'notes'         => sub { map "$_", @_ },
+                 'footer'        => sub { map "$_", @_ },
+                 'smallfooter'   => sub { map "$_", @_ },
+                 'returnaddress' => sub { map "$_", @_ },
+                 'coupon'        => sub { map "$_", @_ },
+                 'summary'       => sub { map "$_", @_ },
+               },
+    'html'  => {
+                 'notes' =>
+                   sub {
+                     map { 
+                       s/%%(.*)$/<!-- $1 -->/g;
+                       s/\\section\*\{\\textsc\{(.)(.*)\}\}/<p><b><font size="+1">$1<\/font>\U$2<\/b>/g;
+                       s/\\begin\{enumerate\}/<ol>/g;
+                       s/\\item /  <li>/g;
+                       s/\\end\{enumerate\}/<\/ol>/g;
+                       s/\\textbf\{(.*)\}/<b>$1<\/b>/g;
+                       s/\\\\\*/<br>/g;
+                       s/\\dollar ?/\$/g;
+                       s/\\#/#/g;
+                       s/~/&nbsp;/g;
+                       $_;
+                     }  @_
+                   },
+                 'footer' =>
+                   sub { map { s/~/&nbsp;/g; s/\\\\\*?\s*$/<BR>/; $_; } @_ },
+                 'smallfooter' =>
+                   sub { map { s/~/&nbsp;/g; s/\\\\\*?\s*$/<BR>/; $_; } @_ },
+                 'returnaddress' =>
+                   sub {
+                     map { 
+                       s/~/&nbsp;/g;
+                       s/\\\\\*?\s*$/<BR>/;
+                       s/\\hyphenation\{[\w\s\-]+}//;
+                       s/\\([&])/$1/g;
+                       $_;
+                     }  @_
+                   },
+                 'coupon'        => sub { "" },
+                 'summary'       => sub { "" },
+               },
+    'template' => {
+                 'notes' =>
+                   sub {
+                     map { 
+                       s/%%.*$//g;
+                       s/\\section\*\{\\textsc\{(.*)\}\}/\U$1/g;
+                       s/\\begin\{enumerate\}//g;
+                       s/\\item /  * /g;
+                       s/\\end\{enumerate\}//g;
+                       s/\\textbf\{(.*)\}/$1/g;
+                       s/\\\\\*/ /;
+                       s/\\dollar ?/\$/g;
+                       $_;
+                     }  @_
+                   },
+                 'footer' =>
+                   sub { map { s/~/ /g; s/\\\\\*?\s*$/\n/; $_; } @_ },
+                 'smallfooter' =>
+                   sub { map { s/~/ /g; s/\\\\\*?\s*$/\n/; $_; } @_ },
+                 'returnaddress' =>
+                   sub {
+                     map { 
+                       s/~/ /g;
+                       s/\\\\\*?\s*$/\n/;             # dubious
+                       s/\\hyphenation\{[\w\s\-]+}//;
+                       $_;
+                     }  @_
+                   },
+                 'coupon'        => sub { "" },
+                 'summary'       => sub { "" },
+               },
+  );
+
+
+  # hashes for differing output formats
+  my %nbsps = ( 'latex'    => '~',
+                'html'     => '',    # '&nbps;' would be nice
+                'template' => '',    # not used
+              );
+  my $nbsp = $nbsps{$format};
+
+  my %escape_functions = ( 'latex'    => \&_latex_escape,
+                           'html'     => \&_html_escape_nbsp,#\&encode_entities,
+                           'template' => sub { shift },
+                         );
+  my $escape_function = $escape_functions{$format};
+  my $escape_function_nonbsp = ($format eq 'html')
+                                 ? \&_html_escape : $escape_function;
+
+  my %date_formats = ( 'latex'    => $date_format_long,
+                       'html'     => $date_format_long,
+                       'template' => '%s',
+                     );
+  $date_formats{'html'} =~ s/ /&nbsp;/g;
+
+  my $date_format = $date_formats{$format};
+
+  my %embolden_functions = ( 'latex'    => sub { return '\textbf{'. shift(). '}'
+                                               },
+                             'html'     => sub { return '<b>'. shift(). '</b>'
+                                               },
+                             'template' => sub { shift },
+                           );
+  my $embolden_function = $embolden_functions{$format};
+
+  my %newline_tokens = (  'latex'     => '\\\\',
+                          'html'      => '<br>',
+                          'template'  => "\n",
+                        );
+  my $newline_token = $newline_tokens{$format};
+
+  warn "$me generating template variables\n"
+    if $DEBUG > 1;
+
+  # generate template variables
+  my $returnaddress;
+  if (
+         defined( $conf->config_orbase( "invoice_${format}returnaddress",
+                                        $template
+                                      )
+                )
+       && length( $conf->config_orbase( "invoice_${format}returnaddress",
+                                        $template
+                                      )
+                )
+  ) {
+
+    $returnaddress = join("\n",
+      $conf->config_orbase("invoice_${format}returnaddress", $template)
+    );
+
+  } elsif ( grep /\S/,
+            $conf->config_orbase('invoice_latexreturnaddress', $template) ) {
+
+    my $convert_map = $convert_maps{$format}{'returnaddress'};
+    $returnaddress =
+      join( "\n",
+            &$convert_map( $conf->config_orbase( "invoice_latexreturnaddress",
+                                                 $template
+                                               )
+                         )
+          );
+  } elsif ( grep /\S/, $conf->config('company_address', $self->cust_main->agentnum) ) {
+
+    my $convert_map = $convert_maps{$format}{'returnaddress'};
+    $returnaddress = join( "\n", &$convert_map(
+                                   map { s/( {2,})/'~' x length($1)/eg;
+                                         s/$/\\\\\*/;
+                                         $_
+                                       }
+                                     ( $conf->config('company_name', $self->cust_main->agentnum),
+                                       $conf->config('company_address', $self->cust_main->agentnum),
+                                     )
+                                 )
+                     );
+
+  } else {
+
+    my $warning = "Couldn't find a return address; ".
+                  "do you need to set the company_address configuration value?";
+    warn "$warning\n";
+    $returnaddress = $nbsp;
+    #$returnaddress = $warning;
+
+  }
+
+  warn "$me generating invoice data\n"
+    if $DEBUG > 1;
+
+  my $agentnum = $self->cust_main->agentnum;
+
+  my %invoice_data = (
+
+    #invoice from info
+    'company_name'    => scalar( $conf->config('company_name', $agentnum) ),
+    'company_address' => join("\n", $conf->config('company_address', $agentnum) ). "\n",
+    'returnaddress'   => $returnaddress,
+    'agent'           => &$escape_function($cust_main->agent->agent),
+
+    #invoice info
+    'invnum'          => $self->invnum,
+    'date'            => time2str($date_format, $self->_date),
+    'today'           => time2str($date_format_long, $today),
+    'terms'           => $self->terms,
+    'template'        => $template, #params{'template'},
+    'notice_name'     => ($params{'notice_name'} || 'Invoice'),#escape_function?
+    'current_charges' => sprintf("%.2f", $self->charged),
+    'duedate'         => $self->due_date2str($rdate_format), #date_format?
+
+    #customer info
+    'custnum'         => $cust_main->display_custnum,
+    'agent_custid'    => &$escape_function($cust_main->agent_custid),
+    ( map { $_ => &$escape_function($cust_main->$_()) } qw(
+      payname company address1 address2 city state zip fax
+    )),
+
+    #global config
+    'ship_enable'     => $conf->exists('invoice-ship_address'),
+    'unitprices'      => $conf->exists('invoice-unitprice'),
+    'smallernotes'    => $conf->exists('invoice-smallernotes'),
+    'smallerfooter'   => $conf->exists('invoice-smallerfooter'),
+    'balance_due_below_line' => $conf->exists('balance_due_below_line'),
+   
+    #layout info -- would be fancy to calc some of this and bury the template
+    #               here in the code
+    'topmargin'             => scalar($conf->config('invoice_latextopmargin', $agentnum)),
+    'headsep'               => scalar($conf->config('invoice_latexheadsep', $agentnum)),
+    'textheight'            => scalar($conf->config('invoice_latextextheight', $agentnum)),
+    'extracouponspace'      => scalar($conf->config('invoice_latexextracouponspace', $agentnum)),
+    'couponfootsep'         => scalar($conf->config('invoice_latexcouponfootsep', $agentnum)),
+    'verticalreturnaddress' => $conf->exists('invoice_latexverticalreturnaddress', $agentnum),
+    'addresssep'            => scalar($conf->config('invoice_latexaddresssep', $agentnum)),
+    'amountenclosedsep'     => scalar($conf->config('invoice_latexcouponamountenclosedsep', $agentnum)),
+    'coupontoaddresssep'    => scalar($conf->config('invoice_latexcoupontoaddresssep', $agentnum)),
+    'addcompanytoaddress'   => $conf->exists('invoice_latexcouponaddcompanytoaddress', $agentnum),
+
+    # better hang on to conf_dir for a while (for old templates)
+    'conf_dir'        => "$FS::UID::conf_dir/conf.$FS::UID::datasrc",
+
+    #these are only used when doing paged plaintext
+    'page'            => 1,
+    'total_pages'     => 1,
+
+  );
+  
+  my $min_sdate = 999999999999;
+  my $max_edate = 0;
+  foreach my $cust_bill_pkg ( $self->cust_bill_pkg ) {
+    next unless $cust_bill_pkg->pkgnum > 0;
+    $min_sdate = $cust_bill_pkg->sdate
+      if length($cust_bill_pkg->sdate) && $cust_bill_pkg->sdate < $min_sdate;
+    $max_edate = $cust_bill_pkg->edate
+      if length($cust_bill_pkg->edate) && $cust_bill_pkg->edate > $max_edate;
+  }
+
+  $invoice_data{'bill_period'} = '';
+  $invoice_data{'bill_period'} = time2str('%e %h', $min_sdate) 
+    . " to " . time2str('%e %h', $max_edate)
+    if ($max_edate != 0 && $min_sdate != 999999999999);
+
+  $invoice_data{finance_section} = '';
+  if ( $conf->config('finance_pkgclass') ) {
+    my $pkg_class =
+      qsearchs('pkg_class', { classnum => $conf->config('finance_pkgclass') });
+    $invoice_data{finance_section} = $pkg_class->categoryname;
+  } 
+  $invoice_data{finance_amount} = '0.00';
+  $invoice_data{finance_section} ||= 'Finance Charges'; #avoid config confusion
+
+  my $countrydefault = $conf->config('countrydefault') || 'US';
+  my $prefix = $cust_main->has_ship_address ? 'ship_' : '';
+  foreach ( qw( contact company address1 address2 city state zip country fax) ){
+    my $method = $prefix.$_;
+    $invoice_data{"ship_$_"} = _latex_escape($cust_main->$method);
+  }
+  $invoice_data{'ship_country'} = ''
+    if ( $invoice_data{'ship_country'} eq $countrydefault );
+  
+  $invoice_data{'cid'} = $params{'cid'}
+    if $params{'cid'};
+
+  if ( $cust_main->country eq $countrydefault ) {
+    $invoice_data{'country'} = '';
+  } else {
+    $invoice_data{'country'} = &$escape_function(code2country($cust_main->country));
+  }
+
+  my @address = ();
+  $invoice_data{'address'} = \@address;
+  push @address,
+    $cust_main->payname.
+      ( ( $cust_main->payby eq 'BILL' ) && $cust_main->payinfo
+        ? " (P.O. #". $cust_main->payinfo. ")"
+        : ''
+      )
+  ;
+  push @address, $cust_main->company
+    if $cust_main->company;
+  push @address, $cust_main->address1;
+  push @address, $cust_main->address2
+    if $cust_main->address2;
+  push @address,
+    $cust_main->city. ", ". $cust_main->state. "  ".  $cust_main->zip;
+  push @address, $invoice_data{'country'}
+    if $invoice_data{'country'};
+  push @address, ''
+    while (scalar(@address) < 5);
+
+  $invoice_data{'logo_file'} = $params{'logo_file'}
+    if $params{'logo_file'};
+  $invoice_data{'barcode_file'} = $params{'barcode_file'}
+    if $params{'barcode_file'};
+  $invoice_data{'barcode_img'} = $params{'barcode_img'}
+    if $params{'barcode_img'};
+  $invoice_data{'barcode_cid'} = $params{'barcode_cid'}
+    if $params{'barcode_cid'};
+
+  my( $pr_total, @pr_cust_bill ) = $self->previous; #previous balance
+#  my( $cr_total, @cr_cust_credit ) = $self->cust_credit; #credits
+  #my $balance_due = $self->owed + $pr_total - $cr_total;
+  my $balance_due = $self->owed + $pr_total;
+  $invoice_data{'true_previous_balance'} = sprintf("%.2f", ($self->previous_balance || 0) );
+  $invoice_data{'balance_adjustments'} = sprintf("%.2f", ($self->previous_balance || 0) - ($self->billing_balance || 0) );
+  $invoice_data{'previous_balance'} = sprintf("%.2f", $pr_total);
+  $invoice_data{'balance'} = sprintf("%.2f", $balance_due);
+
+  my $summarypage = '';
+  if ( $conf->exists('invoice_usesummary', $agentnum) ) {
+    $summarypage = 1;
+  }
+  $invoice_data{'summarypage'} = $summarypage;
+
+  warn "$me substituting variables in notes, footer, smallfooter\n"
+    if $DEBUG > 1;
+
+  foreach my $include (qw( notes footer smallfooter coupon )) {
+
+    my $inc_file = $conf->key_orbase("invoice_${format}$include", $template);
+    my @inc_src;
+
+    if ( $conf->exists($inc_file, $agentnum)
+         && length( $conf->config($inc_file, $agentnum) ) ) {
+
+      @inc_src = $conf->config($inc_file, $agentnum);
+
+    } else {
+
+      $inc_file = $conf->key_orbase("invoice_latex$include", $template);
+
+      my $convert_map = $convert_maps{$format}{$include};
+
+      @inc_src = map { s/\[\@--/$delimiters{$format}[0]/g;
+                       s/--\@\]/$delimiters{$format}[1]/g;
+                       $_;
+                     } 
+                 &$convert_map( $conf->config($inc_file, $agentnum) );
+
+    }
+
+    my $inc_tt = new Text::Template (
+      TYPE       => 'ARRAY',
+      SOURCE     => [ map "$_\n", @inc_src ],
+      DELIMITERS => $delimiters{$format},
+    ) or die "Can't create new Text::Template object: $Text::Template::ERROR";
+
+    unless ( $inc_tt->compile() ) {
+      my $error = "Can't compile $inc_file template: $Text::Template::ERROR\n";
+      warn $error. "Template:\n". join('', map "$_\n", @inc_src);
+      die $error;
+    }
+
+    $invoice_data{$include} = $inc_tt->fill_in( HASH => \%invoice_data );
+
+    $invoice_data{$include} =~ s/\n+$//
+      if ($format eq 'latex');
+  }
+
+  $invoice_data{'po_line'} =
+    (  $cust_main->payby eq 'BILL' && $cust_main->payinfo )
+      ? &$escape_function("Purchase Order #". $cust_main->payinfo)
+      : $nbsp;
+
+  my %money_chars = ( 'latex'    => '',
+                      'html'     => $conf->config('money_char') || '$',
+                      'template' => '',
+                    );
+  my $money_char = $money_chars{$format};
+
+  my %other_money_chars = ( 'latex'    => '\dollar ',#XXX should be a config too
+                            'html'     => $conf->config('money_char') || '$',
+                            'template' => '',
+                          );
+  my $other_money_char = $other_money_chars{$format};
+  $invoice_data{'dollar'} = $other_money_char;
+
+  my @detail_items = ();
+  my @total_items = ();
+  my @buf = ();
+  my @sections = ();
+
+  $invoice_data{'detail_items'} = \@detail_items;
+  $invoice_data{'total_items'} = \@total_items;
+  $invoice_data{'buf'} = \@buf;
+  $invoice_data{'sections'} = \@sections;
+
+  warn "$me generating sections\n"
+    if $DEBUG > 1;
+
+  my $previous_section = { 'description' => 'Previous Charges',
+                           'subtotal'    => $other_money_char.
+                                            sprintf('%.2f', $pr_total),
+                           'summarized'  => $summarypage ? 'Y' : '',
+                         };
+  $previous_section->{posttotal} = '0 / 30 / 60 / 90 days overdue '. 
+    join(' / ', map { $cust_main->balance_date_range(@$_) }
+                $self->_prior_month30s
+        )
+    if $conf->exists('invoice_include_aging');
+
+  my $taxtotal = 0;
+  my $tax_section = { 'description' => 'Taxes, Surcharges, and Fees',
+                      'subtotal'    => $taxtotal,   # adjusted below
+                      'summarized'  => $summarypage ? 'Y' : '',
+                    };
+  my $tax_weight = _pkg_category($tax_section->{description})
+                        ? _pkg_category($tax_section->{description})->weight
+                        : 0;
+  $tax_section->{'summarized'} = $summarypage && !$tax_weight ? 'Y' : '';
+  $tax_section->{'sort_weight'} = $tax_weight;
+
+
+  my $adjusttotal = 0;
+  my $adjust_section = { 'description' => 'Credits, Payments, and Adjustments',
+                         'subtotal'    => 0,   # adjusted below
+                         'summarized'  => $summarypage ? 'Y' : '',
+                       };
+  my $adjust_weight = _pkg_category($adjust_section->{description})
+                        ? _pkg_category($adjust_section->{description})->weight
+                        : 0;
+  $adjust_section->{'summarized'} = $summarypage && !$adjust_weight ? 'Y' : '';
+  $adjust_section->{'sort_weight'} = $adjust_weight;
+
+  my $unsquelched = $params{unsquelch_cdr} || $cust_main->squelch_cdr ne 'Y';
+  my $multisection = $conf->exists('invoice_sections', $cust_main->agentnum);
+  $invoice_data{'multisection'} = $multisection;
+  my $late_sections = [];
+  my $extra_sections = [];
+  my $extra_lines = ();
+  if ( $multisection ) {
+    ($extra_sections, $extra_lines) =
+      $self->_items_extra_usage_sections($escape_function_nonbsp, $format)
+      if $conf->exists('usage_class_as_a_section', $cust_main->agentnum);
+
+    push @$extra_sections, $adjust_section if $adjust_section->{sort_weight};
+
+    push @detail_items, @$extra_lines if $extra_lines;
+    push @sections,
+      $self->_items_sections( $late_sections,      # this could stand a refactor
+                              $summarypage,
+                              $escape_function_nonbsp,
+                              $extra_sections,
+                              $format,             #bah
+                            );
+    if ($conf->exists('svc_phone_sections')) {
+      my ($phone_sections, $phone_lines) =
+        $self->_items_svc_phone_sections($escape_function_nonbsp, $format);
+      push @{$late_sections}, @$phone_sections;
+      push @detail_items, @$phone_lines;
+    }
+  }else{
+    push @sections, { 'description' => '', 'subtotal' => '' };
+  }
+
+  unless (    $conf->exists('disable_previous_balance')
+           || $conf->exists('previous_balance-summary_only')
+         )
+  {
+
+    warn "$me adding previous balances\n"
+      if $DEBUG > 1;
+
+    foreach my $line_item ( $self->_items_previous ) {
+
+      my $detail = {
+        ext_description => [],
+      };
+      $detail->{'ref'} = $line_item->{'pkgnum'};
+      $detail->{'quantity'} = 1;
+      $detail->{'section'} = $previous_section;
+      $detail->{'description'} = &$escape_function($line_item->{'description'});
+      if ( exists $line_item->{'ext_description'} ) {
+        @{$detail->{'ext_description'}} = map {
+          &$escape_function($_);
+        } @{$line_item->{'ext_description'}};
+      }
+      $detail->{'amount'} = ( $old_latex ? '' : $money_char).
+                            $line_item->{'amount'};
+      $detail->{'product_code'} = $line_item->{'pkgpart'} || 'N/A';
+
+      push @detail_items, $detail;
+      push @buf, [ $detail->{'description'},
+                   $money_char. sprintf("%10.2f", $line_item->{'amount'}),
+                 ];
+    }
+
+  }
+
+  if ( @pr_cust_bill && !$conf->exists('disable_previous_balance') ) {
+    push @buf, ['','-----------'];
+    push @buf, [ 'Total Previous Balance',
+                 $money_char. sprintf("%10.2f", $pr_total) ];
+    push @buf, ['',''];
+  }
+ 
+  if ( $conf->exists('svc_phone-did-summary') ) {
+      warn "$me adding DID summary\n"
+        if $DEBUG > 1;
+
+      my ($didsummary,$minutes) = $self->_did_summary;
+      my $didsummary_desc = 'DID Activity Summary (Past 30 days)';
+      push @detail_items, 
+	{ 'description' => $didsummary_desc,
+	    'ext_description' => [ $didsummary, $minutes ],
+	}
+	if !$multisection;
+  }
+
+  foreach my $section (@sections, @$late_sections) {
+
+    warn "$me adding section \n". Dumper($section)
+      if $DEBUG > 1;
+
+    # begin some normalization
+    $section->{'subtotal'} = $section->{'amount'}
+      if $multisection
+         && !exists($section->{subtotal})
+         && exists($section->{amount});
+
+    $invoice_data{finance_amount} = sprintf('%.2f', $section->{'subtotal'} )
+      if ( $invoice_data{finance_section} &&
+           $section->{'description'} eq $invoice_data{finance_section} );
+
+    $section->{'subtotal'} = $other_money_char.
+                             sprintf('%.2f', $section->{'subtotal'})
+      if $multisection;
+
+    # continue some normalization
+    $section->{'amount'}   = $section->{'subtotal'}
+      if $multisection;
+
+
+    if ( $section->{'description'} ) {
+      push @buf, ( [ &$escape_function($section->{'description'}), '' ],
+                   [ '', '' ],
+                 );
+    }
+
+    warn "$me   setting options\n"
+      if $DEBUG > 1;
+
+    my $multilocation = scalar($cust_main->cust_location); #too expensive?
+    my %options = ();
+    $options{'section'} = $section if $multisection;
+    $options{'format'} = $format;
+    $options{'escape_function'} = $escape_function;
+    $options{'format_function'} = sub { () } unless $unsquelched;
+    $options{'unsquelched'} = $unsquelched;
+    $options{'summary_page'} = $summarypage;
+    $options{'skip_usage'} =
+      scalar(@$extra_sections) && !grep{$section == $_} @$extra_sections;
+    $options{'multilocation'} = $multilocation;
+    $options{'multisection'} = $multisection;
+
+    warn "$me   searching for line items\n"
+      if $DEBUG > 1;
+
+    foreach my $line_item ( $self->_items_pkg(%options) ) {
+
+      warn "$me     adding line item $line_item\n"
+        if $DEBUG > 1;
+
+      my $detail = {
+        ext_description => [],
+      };
+      $detail->{'ref'} = $line_item->{'pkgnum'};
+      $detail->{'quantity'} = $line_item->{'quantity'};
+      $detail->{'section'} = $section;
+      $detail->{'description'} = &$escape_function($line_item->{'description'});
+      if ( exists $line_item->{'ext_description'} ) {
+        @{$detail->{'ext_description'}} = @{$line_item->{'ext_description'}};
+      }
+      $detail->{'amount'} = ( $old_latex ? '' : $money_char ).
+                              $line_item->{'amount'};
+      $detail->{'unit_amount'} = ( $old_latex ? '' : $money_char ).
+                                 $line_item->{'unit_amount'};
+      $detail->{'product_code'} = $line_item->{'pkgpart'} || 'N/A';
+  
+      push @detail_items, $detail;
+      push @buf, ( [ $detail->{'description'},
+                     $money_char. sprintf("%10.2f", $line_item->{'amount'}),
+                   ],
+                   map { [ " ". $_, '' ] } @{$detail->{'ext_description'}},
+                 );
+    }
+
+    if ( $section->{'description'} ) {
+      push @buf, ( ['','-----------'],
+                   [ $section->{'description'}. ' sub-total',
+                      $money_char. sprintf("%10.2f", $section->{'subtotal'})
+                   ],
+                   [ '', '' ],
+                   [ '', '' ],
+                 );
+    }
+  
+  }
+  
+  $invoice_data{current_less_finance} =
+    sprintf('%.2f', $self->charged - $invoice_data{finance_amount} );
+
+  if ( $multisection && !$conf->exists('disable_previous_balance')
+    || $conf->exists('previous_balance-summary_only') )
+  {
+    unshift @sections, $previous_section if $pr_total;
+  }
+
+  warn "$me adding taxes\n"
+    if $DEBUG > 1;
+
+  foreach my $tax ( $self->_items_tax ) {
+
+    $taxtotal += $tax->{'amount'};
+
+    my $description = &$escape_function( $tax->{'description'} );
+    my $amount      = sprintf( '%.2f', $tax->{'amount'} );
+
+    if ( $multisection ) {
+
+      my $money = $old_latex ? '' : $money_char;
+      push @detail_items, {
+        ext_description => [],
+        ref          => '',
+        quantity     => '',
+        description  => $description,
+        amount       => $money. $amount,
+        product_code => '',
+        section      => $tax_section,
+      };
+
+    } else {
+
+      push @total_items, {
+        'total_item'   => $description,
+        'total_amount' => $other_money_char. $amount,
+      };
+
+    }
+
+    push @buf,[ $description,
+                $money_char. $amount,
+              ];
+
+  }
+  
+  if ( $taxtotal ) {
+    my $total = {};
+    $total->{'total_item'} = 'Sub-total';
+    $total->{'total_amount'} =
+      $other_money_char. sprintf('%.2f', $self->charged - $taxtotal );
+
+    if ( $multisection ) {
+      $tax_section->{'subtotal'} = $other_money_char.
+                                   sprintf('%.2f', $taxtotal);
+      $tax_section->{'pretotal'} = 'New charges sub-total '.
+                                   $total->{'total_amount'};
+      push @sections, $tax_section if $taxtotal;
+    }else{
+      unshift @total_items, $total;
+    }
+  }
+  $invoice_data{'taxtotal'} = sprintf('%.2f', $taxtotal);
+
+  push @buf,['','-----------'];
+  push @buf,[( $conf->exists('disable_previous_balance') 
+               ? 'Total Charges'
+               : 'Total New Charges'
+             ),
+             $money_char. sprintf("%10.2f",$self->charged) ];
+  push @buf,['',''];
+
+  {
+    my $total = {};
+    my $item = 'Total';
+    $item = $conf->config('previous_balance-exclude_from_total')
+         || 'Total New Charges'
+      if $conf->exists('previous_balance-exclude_from_total');
+    my $amount = $self->charged +
+                   ( $conf->exists('disable_previous_balance') ||
+                     $conf->exists('previous_balance-exclude_from_total')
+                     ? 0
+                     : $pr_total
+                   );
+    $total->{'total_item'} = &$embolden_function($item);
+    $total->{'total_amount'} =
+      &$embolden_function( $other_money_char.  sprintf( '%.2f', $amount ) );
+    if ( $multisection ) {
+      if ( $adjust_section->{'sort_weight'} ) {
+        $adjust_section->{'posttotal'} = 'Balance Forward '. $other_money_char.
+          sprintf("%.2f", ($self->billing_balance || 0) );
+      } else {
+        $adjust_section->{'pretotal'} = 'New charges total '. $other_money_char.
+                                        sprintf('%.2f', $self->charged );
+      } 
+    }else{
+      push @total_items, $total;
+    }
+    push @buf,['','-----------'];
+    push @buf,[$item,
+               $money_char.
+               sprintf( '%10.2f', $amount )
+              ];
+    push @buf,['',''];
+  }
+  
+  unless ( $conf->exists('disable_previous_balance') ) {
+    #foreach my $thing ( sort { $a->_date <=> $b->_date } $self->_items_credits, $self->_items_payments
+  
+    # credits
+    my $credittotal = 0;
+    foreach my $credit ( $self->_items_credits('trim_len'=>60) ) {
+
+      my $total;
+      $total->{'total_item'} = &$escape_function($credit->{'description'});
+      $credittotal += $credit->{'amount'};
+      $total->{'total_amount'} = '-'. $other_money_char. $credit->{'amount'};
+      $adjusttotal += $credit->{'amount'};
+      if ( $multisection ) {
+        my $money = $old_latex ? '' : $money_char;
+        push @detail_items, {
+          ext_description => [],
+          ref          => '',
+          quantity     => '',
+          description  => &$escape_function($credit->{'description'}),
+          amount       => $money. $credit->{'amount'},
+          product_code => '',
+          section      => $adjust_section,
+        };
+      } else {
+        push @total_items, $total;
+      }
+
+    }
+    $invoice_data{'credittotal'} = sprintf('%.2f', $credittotal);
+
+    #credits (again)
+    foreach my $credit ( $self->_items_credits('trim_len'=>32) ) {
+      push @buf, [ $credit->{'description'}, $money_char.$credit->{'amount'} ];
+    }
+
+    # payments
+    my $paymenttotal = 0;
+    foreach my $payment ( $self->_items_payments ) {
+      my $total = {};
+      $total->{'total_item'} = &$escape_function($payment->{'description'});
+      $paymenttotal += $payment->{'amount'};
+      $total->{'total_amount'} = '-'. $other_money_char. $payment->{'amount'};
+      $adjusttotal += $payment->{'amount'};
+      if ( $multisection ) {
+        my $money = $old_latex ? '' : $money_char;
+        push @detail_items, {
+          ext_description => [],
+          ref          => '',
+          quantity     => '',
+          description  => &$escape_function($payment->{'description'}),
+          amount       => $money. $payment->{'amount'},
+          product_code => '',
+          section      => $adjust_section,
+        };
+      }else{
+        push @total_items, $total;
+      }
+      push @buf, [ $payment->{'description'},
+                   $money_char. sprintf("%10.2f", $payment->{'amount'}),
+                 ];
+    }
+    $invoice_data{'paymenttotal'} = sprintf('%.2f', $paymenttotal);
+  
+    if ( $multisection ) {
+      $adjust_section->{'subtotal'} = $other_money_char.
+                                      sprintf('%.2f', $adjusttotal);
+      push @sections, $adjust_section
+        unless $adjust_section->{sort_weight};
+    }
+
+    { 
+      my $total;
+      $total->{'total_item'} = &$embolden_function($self->balance_due_msg);
+      $total->{'total_amount'} =
+        &$embolden_function(
+          $other_money_char. sprintf('%.2f', $summarypage 
+                                               ? $self->charged +
+                                                 $self->billing_balance
+                                               : $self->owed + $pr_total
+                                    )
+        );
+      if ( $multisection && !$adjust_section->{sort_weight} ) {
+        $adjust_section->{'posttotal'} = $total->{'total_item'}. ' '.
+                                         $total->{'total_amount'};
+      }else{
+        push @total_items, $total;
+      }
+      push @buf,['','-----------'];
+      push @buf,[$self->balance_due_msg, $money_char. 
+        sprintf("%10.2f", $balance_due ) ];
+    }
+
+    if ( $conf->exists('previous_balance-show_credit')
+        and $cust_main->balance < 0 ) {
+      my $credit_total = {
+        'total_item'    => &$embolden_function($self->credit_balance_msg),
+        'total_amount'  => &$embolden_function(
+          $other_money_char. sprintf('%.2f', -$cust_main->balance)
+        ),
+      };
+      if ( $multisection ) {
+        $adjust_section->{'posttotal'} .= $newline_token .
+          $credit_total->{'total_item'} . ' ' . $credit_total->{'total_amount'};
+      }
+      else {
+        push @total_items, $credit_total;
+      }
+      push @buf,['','-----------'];
+      push @buf,[$self->credit_balance_msg, $money_char. 
+        sprintf("%10.2f", -$cust_main->balance ) ];
+    }
+  }
+
+  if ( $multisection ) {
+    if ($conf->exists('svc_phone_sections')) {
+      my $total;
+      $total->{'total_item'} = &$embolden_function($self->balance_due_msg);
+      $total->{'total_amount'} =
+        &$embolden_function(
+          $other_money_char. sprintf('%.2f', $self->owed + $pr_total)
+        );
+      my $last_section = pop @sections;
+      $last_section->{'posttotal'} = $total->{'total_item'}. ' '.
+                                     $total->{'total_amount'};
+      push @sections, $last_section;
+    }
+    push @sections, @$late_sections
+      if $unsquelched;
+  }
+
+  my @includelist = ();
+  push @includelist, 'summary' if $summarypage;
+  foreach my $include ( @includelist ) {
+
+    my $inc_file = $conf->key_orbase("invoice_${format}$include", $template);
+    my @inc_src;
+
+    if ( length( $conf->config($inc_file, $agentnum) ) ) {
+
+      @inc_src = $conf->config($inc_file, $agentnum);
+
+    } else {
+
+      $inc_file = $conf->key_orbase("invoice_latex$include", $template);
+
+      my $convert_map = $convert_maps{$format}{$include};
+
+      @inc_src = map { s/\[\@--/$delimiters{$format}[0]/g;
+                       s/--\@\]/$delimiters{$format}[1]/g;
+                       $_;
+                     } 
+                 &$convert_map( $conf->config($inc_file, $agentnum) );
+
+    }
+
+    my $inc_tt = new Text::Template (
+      TYPE       => 'ARRAY',
+      SOURCE     => [ map "$_\n", @inc_src ],
+      DELIMITERS => $delimiters{$format},
+    ) or die "Can't create new Text::Template object: $Text::Template::ERROR";
+
+    unless ( $inc_tt->compile() ) {
+      my $error = "Can't compile $inc_file template: $Text::Template::ERROR\n";
+      warn $error. "Template:\n". join('', map "$_\n", @inc_src);
+      die $error;
+    }
+
+    $invoice_data{$include} = $inc_tt->fill_in( HASH => \%invoice_data );
+
+    $invoice_data{$include} =~ s/\n+$//
+      if ($format eq 'latex');
+  }
+
+  $invoice_lines = 0;
+  my $wasfunc = 0;
+  foreach ( grep /invoice_lines\(\d*\)/, @invoice_template ) { #kludgy
+    /invoice_lines\((\d*)\)/;
+    $invoice_lines += $1 || scalar(@buf);
+    $wasfunc=1;
+  }
+  die "no invoice_lines() functions in template?"
+    if ( $format eq 'template' && !$wasfunc );
+
+  if ($format eq 'template') {
+
+    if ( $invoice_lines ) {
+      $invoice_data{'total_pages'} = int( scalar(@buf) / $invoice_lines );
+      $invoice_data{'total_pages'}++
+        if scalar(@buf) % $invoice_lines;
+    }
+
+    #setup subroutine for the template
+    sub FS::cust_bill::_template::invoice_lines {
+      my $lines = shift || scalar(@FS::cust_bill::_template::buf);
+      map { 
+        scalar(@FS::cust_bill::_template::buf)
+          ? shift @FS::cust_bill::_template::buf
+          : [ '', '' ];
+      }
+      ( 1 .. $lines );
+    }
+
+    my $lines;
+    my @collect;
+    while (@buf) {
+      push @collect, split("\n",
+        $text_template->fill_in( HASH => \%invoice_data,
+                                 PACKAGE => 'FS::cust_bill::_template'
+                               )
+      );
+      $FS::cust_bill::_template::page++;
+    }
+    map "$_\n", @collect;
+  }else{
+    warn "filling in template for invoice ". $self->invnum. "\n"
+      if $DEBUG;
+    warn join("\n", map " $_ => ". $invoice_data{$_}, keys %invoice_data). "\n"
+      if $DEBUG > 1;
+
+    $text_template->fill_in(HASH => \%invoice_data);
+  }
+}
+
+# helper routine for generating date ranges
+sub _prior_month30s {
+  my $self = shift;
+  my @ranges = (
+   [ 1,       2592000 ], # 0-30 days ago
+   [ 2592000, 5184000 ], # 30-60 days ago
+   [ 5184000, 7776000 ], # 60-90 days ago
+   [ 7776000, 0       ], # 90+   days ago
+  );
+
+  map { [ $_->[0] ? $self->_date - $_->[0] - 1 : '',
+          $_->[1] ? $self->_date - $_->[1] - 1 : '',
+      ] }
+  @ranges;
+}
+
+=item print_ps HASHREF | [ TIME [ , TEMPLATE ] ]
+
+Returns an postscript invoice, as a scalar.
+
+Options can be passed as a hashref (recommended) or as a list of time, template
+and then any key/value pairs for any other options.
+
+I<time> an optional value used to control the printing of overdue messages.  The
+default is now.  It isn't the date of the invoice; that's the `_date' field.
+It is specified as a UNIX timestamp; see L<perlfunc/"time">.  Also see
+L<Time::Local> and L<Date::Parse> for conversion functions.
+
+I<notice_name>, if specified, overrides "Invoice" as the name of the sent document (templates from 10/2009 or newer required)
+
+=cut
+
+sub print_ps {
+  my $self = shift;
+
+  my ($file, $logofile, $barcodefile) = $self->print_latex(@_);
+  my $ps = generate_ps($file);
+  unlink($logofile);
+  unlink($barcodefile);
+
+  $ps;
+}
+
+=item print_pdf HASHREF | [ TIME [ , TEMPLATE ] ]
+
+Returns an PDF invoice, as a scalar.
+
+Options can be passed as a hashref (recommended) or as a list of time, template
+and then any key/value pairs for any other options.
+
+I<time> an optional value used to control the printing of overdue messages.  The
+default is now.  It isn't the date of the invoice; that's the `_date' field.
+It is specified as a UNIX timestamp; see L<perlfunc/"time">.  Also see
+L<Time::Local> and L<Date::Parse> for conversion functions.
+
+I<template>, if specified, is the name of a suffix for alternate invoices.
+
+I<notice_name>, if specified, overrides "Invoice" as the name of the sent document (templates from 10/2009 or newer required)
+
+=cut
+
+sub print_pdf {
+  my $self = shift;
+
+  my ($file, $logofile, $barcodefile) = $self->print_latex(@_);
+  my $pdf = generate_pdf($file);
+  unlink($logofile);
+  unlink($barcodefile);
+
+  $pdf;
+}
+
+=item print_html HASHREF | [ TIME [ , TEMPLATE [ , CID ] ] ]
+
+Returns an HTML invoice, as a scalar.
+
+I<time> an optional value used to control the printing of overdue messages.  The
+default is now.  It isn't the date of the invoice; that's the `_date' field.
+It is specified as a UNIX timestamp; see L<perlfunc/"time">.  Also see
+L<Time::Local> and L<Date::Parse> for conversion functions.
+
+I<template>, if specified, is the name of a suffix for alternate invoices.
+
+I<notice_name>, if specified, overrides "Invoice" as the name of the sent document (templates from 10/2009 or newer required)
+
+I<cid> is a MIME Content-ID used to create a "cid:" URL for the logo image, used
+when emailing the invoice as part of a multipart/related MIME email.
+
+=cut
+
+sub print_html {
+  my $self = shift;
+  my %params;
+  if ( ref($_[0]) ) {
+    %params = %{ shift() }; 
+  }else{
+    $params{'time'} = shift;
+    $params{'template'} = shift;
+    $params{'cid'} = shift;
+  }
+
+  $params{'format'} = 'html';
+  
+  $self->print_generic( %params );
+}
+
+# quick subroutine for print_latex
+#
+# There are ten characters that LaTeX treats as special characters, which
+# means that they do not simply typeset themselves: 
+#      # $ % & ~ _ ^ \ { }
+#
+# TeX ignores blanks following an escaped character; if you want a blank (as
+# in "10% of ..."), you have to "escape" the blank as well ("10\%\ of ..."). 
+
+sub _latex_escape {
+  my $value = shift;
+  $value =~ s/([#\$%&~_\^{}])( )?/"\\$1". ( ( defined($2) && length($2) ) ? "\\$2" : '' )/ge;
+  $value =~ s/([<>])/\$$1\$/g;
+  $value;
+}
+
+sub _html_escape {
+  my $value = shift;
+  encode_entities($value);
+  $value;
+}
+
+sub _html_escape_nbsp {
+  my $value = _html_escape(shift);
+  $value =~ s/ +/&nbsp;/g;
+  $value;
+}
+
+#utility methods for print_*
+
+sub _translate_old_latex_format {
+  warn "_translate_old_latex_format called\n"
+    if $DEBUG; 
+
+  my @template = ();
+  while ( @_ ) {
+    my $line = shift;
+  
+    if ( $line =~ /^%%Detail\s*$/ ) {
+  
+      push @template, q![@--!,
+                      q!  foreach my $_tr_line (@detail_items) {!,
+                      q!    if ( scalar ($_tr_item->{'ext_description'} ) ) {!,
+                      q!      $_tr_line->{'description'} .= !, 
+                      q!        "\\tabularnewline\n~~".!,
+                      q!        join( "\\tabularnewline\n~~",!,
+                      q!          @{$_tr_line->{'ext_description'}}!,
+                      q!        );!,
+                      q!    }!;
+
+      while ( ( my $line_item_line = shift )
+              !~ /^%%EndDetail\s*$/                            ) {
+        $line_item_line =~ s/'/\\'/g;    # nice LTS
+        $line_item_line =~ s/\\/\\\\/g;  # escape quotes and backslashes
+        $line_item_line =~ s/\$(\w+)/'. \$_tr_line->{$1}. '/g;
+        push @template, "    \$OUT .= '$line_item_line';";
+      }
+
+      push @template, '}',
+                      '--@]';
+      #' doh, gvim
+    } elsif ( $line =~ /^%%TotalDetails\s*$/ ) {
+
+      push @template, '[@--',
+                      '  foreach my $_tr_line (@total_items) {';
+
+      while ( ( my $total_item_line = shift )
+              !~ /^%%EndTotalDetails\s*$/                      ) {
+        $total_item_line =~ s/'/\\'/g;    # nice LTS
+        $total_item_line =~ s/\\/\\\\/g;  # escape quotes and backslashes
+        $total_item_line =~ s/\$(\w+)/'. \$_tr_line->{$1}. '/g;
+        push @template, "    \$OUT .= '$total_item_line';";
+      }
+
+      push @template, '}',
+                      '--@]';
+
+    } else {
+      $line =~ s/\$(\w+)/[\@-- \$$1 --\@]/g;
+      push @template, $line;  
+    }
+  
+  }
+
+  if ($DEBUG) {
+    warn "$_\n" foreach @template;
+  }
+
+  (@template);
+}
+
+sub terms {
+  my $self = shift;
+
+  #check for an invoice-specific override
+  return $self->invoice_terms if $self->invoice_terms;
+  
+  #check for a customer- specific override
+  my $cust_main = $self->cust_main;
+  return $cust_main->invoice_terms if $cust_main->invoice_terms;
+
+  #use configured default
+  $conf->config('invoice_default_terms') || '';
+}
+
+sub due_date {
+  my $self = shift;
+  my $duedate = '';
+  if ( $self->terms =~ /^\s*Net\s*(\d+)\s*$/ ) {
+    $duedate = $self->_date() + ( $1 * 86400 );
+  }
+  $duedate;
+}
+
+sub due_date2str {
+  my $self = shift;
+  $self->due_date ? time2str(shift, $self->due_date) : '';
+}
+
+sub balance_due_msg {
+  my $self = shift;
+  my $msg = 'Balance Due';
+  return $msg unless $self->terms;
+  if ( $self->due_date ) {
+    $msg .= ' - Please pay by '. $self->due_date2str($date_format);
+  } elsif ( $self->terms ) {
+    $msg .= ' - '. $self->terms;
+  }
+  $msg;
+}
+
+sub balance_due_date {
+  my $self = shift;
+  my $duedate = '';
+  if (    $conf->exists('invoice_default_terms') 
+       && $conf->config('invoice_default_terms')=~ /^\s*Net\s*(\d+)\s*$/ ) {
+    $duedate = time2str($rdate_format, $self->_date + ($1*86400) );
+  }
+  $duedate;
+}
+
+sub credit_balance_msg { 'Credit Balance Remaining' }
+
+=item invnum_date_pretty
+
+Returns a string with the invoice number and date, for example:
+"Invoice #54 (3/20/2008)"
+
+=cut
+
+sub invnum_date_pretty {
+  my $self = shift;
+  'Invoice #'. $self->invnum. ' ('. $self->_date_pretty. ')';
+}
+
+=item _date_pretty
+
+Returns a string with the date, for example: "3/20/2008"
+
+=cut
+
+sub _date_pretty {
+  my $self = shift;
+  time2str($date_format, $self->_date);
+}
+
+use vars qw(%pkg_category_cache);
+sub _items_sections {
+  my $self = shift;
+  my $late = shift;
+  my $summarypage = shift;
+  my $escape = shift;
+  my $extra_sections = shift;
+  my $format = shift;
+
+  my %subtotal = ();
+  my %late_subtotal = ();
+  my %not_tax = ();
+
+  foreach my $cust_bill_pkg ( $self->cust_bill_pkg )
+  {
+
+      my $usage = $cust_bill_pkg->usage;
+
+      foreach my $display ($cust_bill_pkg->cust_bill_pkg_display) {
+        next if ( $display->summary && $summarypage );
+
+        my $section = $display->section;
+        my $type    = $display->type;
+
+        $not_tax{$section} = 1
+          unless $cust_bill_pkg->pkgnum == 0;
+
+        if ( $display->post_total && !$summarypage ) {
+          if (! $type || $type eq 'S') {
+            $late_subtotal{$section} += $cust_bill_pkg->setup
+              if $cust_bill_pkg->setup != 0;
+          }
+
+          if (! $type) {
+            $late_subtotal{$section} += $cust_bill_pkg->recur
+              if $cust_bill_pkg->recur != 0;
+          }
+
+          if ($type && $type eq 'R') {
+            $late_subtotal{$section} += $cust_bill_pkg->recur - $usage
+              if $cust_bill_pkg->recur != 0;
+          }
+          
+          if ($type && $type eq 'U') {
+            $late_subtotal{$section} += $usage
+              unless scalar(@$extra_sections);
+          }
+
+        } else {
+
+          next if $cust_bill_pkg->pkgnum == 0 && ! $section;
+
+          if (! $type || $type eq 'S') {
+            $subtotal{$section} += $cust_bill_pkg->setup
+              if $cust_bill_pkg->setup != 0;
+          }
+
+          if (! $type) {
+            $subtotal{$section} += $cust_bill_pkg->recur
+              if $cust_bill_pkg->recur != 0;
+          }
+
+          if ($type && $type eq 'R') {
+            $subtotal{$section} += $cust_bill_pkg->recur - $usage
+              if $cust_bill_pkg->recur != 0;
+          }
+          
+          if ($type && $type eq 'U') {
+            $subtotal{$section} += $usage
+              unless scalar(@$extra_sections);
+          }
+
+        }
+
+      }
+
+  }
+
+  %pkg_category_cache = ();
+
+  push @$late, map { { 'description' => &{$escape}($_),
+                       'subtotal'    => $late_subtotal{$_},
+                       'post_total'  => 1,
+                       'sort_weight' => ( _pkg_category($_)
+                                            ? _pkg_category($_)->weight
+                                            : 0
+                                       ),
+                       ((_pkg_category($_) && _pkg_category($_)->condense)
+                                           ? $self->_condense_section($format)
+                                           : ()
+                       ),
+                   } }
+                 sort _sectionsort keys %late_subtotal;
+
+  my @sections;
+  if ( $summarypage ) {
+    @sections = grep { exists($subtotal{$_}) || ! _pkg_category($_)->disabled }
+                map { $_->categoryname } qsearch('pkg_category', {});
+    push @sections, '' if exists($subtotal{''});
+  } else {
+    @sections = keys %subtotal;
+  }
+
+  my @early = map { { 'description' => &{$escape}($_),
+                      'subtotal'    => $subtotal{$_},
+                      'summarized'  => $not_tax{$_} ? '' : 'Y',
+                      'tax_section' => $not_tax{$_} ? '' : 'Y',
+                      'sort_weight' => ( _pkg_category($_)
+                                           ? _pkg_category($_)->weight
+                                           : 0
+                                       ),
+                       ((_pkg_category($_) && _pkg_category($_)->condense)
+                                           ? $self->_condense_section($format)
+                                           : ()
+                       ),
+                    }
+                  } @sections;
+  push @early, @$extra_sections if $extra_sections;
+ 
+  sort { $a->{sort_weight} <=> $b->{sort_weight} } @early;
+
+}
+
+#helper subs for above
+
+sub _sectionsort {
+  _pkg_category($a)->weight <=> _pkg_category($b)->weight;
+}
+
+sub _pkg_category {
+  my $categoryname = shift;
+  $pkg_category_cache{$categoryname} ||=
+    qsearchs( 'pkg_category', { 'categoryname' => $categoryname } );
+}
+
+my %condensed_format = (
+  'label' => [ qw( Description Qty Amount ) ],
+  'fields' => [
+                sub { shift->{description} },
+                sub { shift->{quantity} },
+                sub { my($href, %opt) = @_;
+                      ($opt{dollar} || ''). $href->{amount};
+                    },
+              ],
+  'align'  => [ qw( l r r ) ],
+  'span'   => [ qw( 5 1 1 ) ],            # unitprices?
+  'width'  => [ qw( 10.7cm 1.4cm 1.6cm ) ],   # don't like this
+);
+
+sub _condense_section {
+  my ( $self, $format ) = ( shift, shift );
+  ( 'condensed' => 1,
+    map { my $method = "_condensed_$_"; $_ => $self->$method($format) }
+      qw( description_generator
+          header_generator
+          total_generator
+          total_line_generator
+        )
+  );
+}
+
+sub _condensed_generator_defaults {
+  my ( $self, $format ) = ( shift, shift );
+  return ( \%condensed_format, ' ', ' ', ' ', sub { shift } );
+}
+
+my %html_align = (
+  'c' => 'center',
+  'l' => 'left',
+  'r' => 'right',
+);
+
+sub _condensed_header_generator {
+  my ( $self, $format ) = ( shift, shift );
+
+  my ( $f, $prefix, $suffix, $separator, $column ) =
+    _condensed_generator_defaults($format);
+
+  if ($format eq 'latex') {
+    $prefix = "\\hline\n\\rule{0pt}{2.5ex}\n\\makebox[1.4cm]{}&\n";
+    $suffix = "\\\\\n\\hline";
+    $separator = "&\n";
+    $column =
+      sub { my ($d,$a,$s,$w) = @_;
+            return "\\multicolumn{$s}{$a}{\\makebox[$w][$a]{\\textbf{$d}}}";
+          };
+  } elsif ( $format eq 'html' ) {
+    $prefix = '<th></th>';
+    $suffix = '';
+    $separator = '';
+    $column =
+      sub { my ($d,$a,$s,$w) = @_;
+            return qq!<th align="$html_align{$a}">$d</th>!;
+      };
+  }
+
+  sub {
+    my @args = @_;
+    my @result = ();
+
+    foreach  (my $i = 0; $f->{label}->[$i]; $i++) {
+      push @result,
+        &{$column}( map { $f->{$_}->[$i] } qw(label align span width) );
+    }
+
+    $prefix. join($separator, @result). $suffix;
+  };
+
+}
+
+sub _condensed_description_generator {
+  my ( $self, $format ) = ( shift, shift );
+
+  my ( $f, $prefix, $suffix, $separator, $column ) =
+    _condensed_generator_defaults($format);
+
+  my $money_char = '$';
+  if ($format eq 'latex') {
+    $prefix = "\\hline\n\\multicolumn{1}{c}{\\rule{0pt}{2.5ex}~} &\n";
+    $suffix = '\\\\';
+    $separator = " & \n";
+    $column =
+      sub { my ($d,$a,$s,$w) = @_;
+            return "\\multicolumn{$s}{$a}{\\makebox[$w][$a]{\\textbf{$d}}}";
+          };
+    $money_char = '\\dollar';
+  }elsif ( $format eq 'html' ) {
+    $prefix = '"><td align="center"></td>';
+    $suffix = '';
+    $separator = '';
+    $column =
+      sub { my ($d,$a,$s,$w) = @_;
+            return qq!<td align="$html_align{$a}">$d</td>!;
+      };
+    #$money_char = $conf->config('money_char') || '$';
+    $money_char = '';  # this is madness
+  }
+
+  sub {
+    #my @args = @_;
+    my $href = shift;
+    my @result = ();
+
+    foreach  (my $i = 0; $f->{label}->[$i]; $i++) {
+      my $dollar = '';
+      $dollar = $money_char if $i == scalar(@{$f->{label}})-1;
+      push @result,
+        &{$column}( &{$f->{fields}->[$i]}($href, 'dollar' => $dollar),
+                    map { $f->{$_}->[$i] } qw(align span width)
+                  );
+    }
+
+    $prefix. join( $separator, @result ). $suffix;
+  };
+
+}
+
+sub _condensed_total_generator {
+  my ( $self, $format ) = ( shift, shift );
+
+  my ( $f, $prefix, $suffix, $separator, $column ) =
+    _condensed_generator_defaults($format);
+  my $style = '';
+
+  if ($format eq 'latex') {
+    $prefix = "& ";
+    $suffix = "\\\\\n";
+    $separator = " & \n";
+    $column =
+      sub { my ($d,$a,$s,$w) = @_;
+            return "\\multicolumn{$s}{$a}{\\makebox[$w][$a]{$d}}";
+          };
+  }elsif ( $format eq 'html' ) {
+    $prefix = '';
+    $suffix = '';
+    $separator = '';
+    $style = 'border-top: 3px solid #000000;border-bottom: 3px solid #000000;';
+    $column =
+      sub { my ($d,$a,$s,$w) = @_;
+            return qq!<td align="$html_align{$a}" style="$style">$d</td>!;
+      };
+  }
+
+
+  sub {
+    my @args = @_;
+    my @result = ();
+
+    #  my $r = &{$f->{fields}->[$i]}(@args);
+    #  $r .= ' Total' unless $i;
+
+    foreach  (my $i = 0; $f->{label}->[$i]; $i++) {
+      push @result,
+        &{$column}( &{$f->{fields}->[$i]}(@args). ($i ? '' : ' Total'),
+                    map { $f->{$_}->[$i] } qw(align span width)
+                  );
+    }
+
+    $prefix. join( $separator, @result ). $suffix;
+  };
+
+}
+
+=item total_line_generator FORMAT
+
+Returns a coderef used for generation of invoice total line items for this
+usage_class.  FORMAT is either html or latex
+
+=cut
+
+# should not be used: will have issues with hash element names (description vs
+# total_item and amount vs total_amount -- another array of functions?
+
+sub _condensed_total_line_generator {
+  my ( $self, $format ) = ( shift, shift );
+
+  my ( $f, $prefix, $suffix, $separator, $column ) =
+    _condensed_generator_defaults($format);
+  my $style = '';
+
+  if ($format eq 'latex') {
+    $prefix = "& ";
+    $suffix = "\\\\\n";
+    $separator = " & \n";
+    $column =
+      sub { my ($d,$a,$s,$w) = @_;
+            return "\\multicolumn{$s}{$a}{\\makebox[$w][$a]{$d}}";
+          };
+  }elsif ( $format eq 'html' ) {
+    $prefix = '';
+    $suffix = '';
+    $separator = '';
+    $style = 'border-top: 3px solid #000000;border-bottom: 3px solid #000000;';
+    $column =
+      sub { my ($d,$a,$s,$w) = @_;
+            return qq!<td align="$html_align{$a}" style="$style">$d</td>!;
+      };
+  }
+
+
+  sub {
+    my @args = @_;
+    my @result = ();
+
+    foreach  (my $i = 0; $f->{label}->[$i]; $i++) {
+      push @result,
+        &{$column}( &{$f->{fields}->[$i]}(@args),
+                    map { $f->{$_}->[$i] } qw(align span width)
+                  );
+    }
+
+    $prefix. join( $separator, @result ). $suffix;
+  };
+
+}
+
+#sub _items_extra_usage_sections {
+#  my $self = shift;
+#  my $escape = shift;
+#
+#  my %sections = ();
+#
+#  my %usage_class =  map{ $_->classname, $_ } qsearch('usage_class', {});
+#  foreach my $cust_bill_pkg ( $self->cust_bill_pkg )
+#  {
+#    next unless $cust_bill_pkg->pkgnum > 0;
+#
+#    foreach my $section ( keys %usage_class ) {
+#
+#      my $usage = $cust_bill_pkg->usage($section);
+#
+#      next unless $usage && $usage > 0;
+#
+#      $sections{$section} ||= 0;
+#      $sections{$section} += $usage;
+#
+#    }
+#
+#  }
+#
+#  map { { 'description' => &{$escape}($_),
+#          'subtotal'    => $sections{$_},
+#          'summarized'  => '',
+#          'tax_section' => '',
+#        }
+#      }
+#    sort {$usage_class{$a}->weight <=> $usage_class{$b}->weight} keys %sections;
+#
+#}
+
+sub _items_extra_usage_sections {
+  my $self = shift;
+  my $escape = shift;
+  my $format = shift;
+
+  my %sections = ();
+  my %classnums = ();
+  my %lines = ();
+
+  my %usage_class =  map { $_->classnum => $_ } qsearch( 'usage_class', {} );
+  foreach my $cust_bill_pkg ( $self->cust_bill_pkg ) {
+    next unless $cust_bill_pkg->pkgnum > 0;
+
+    foreach my $classnum ( keys %usage_class ) {
+      my $section = $usage_class{$classnum}->classname;
+      $classnums{$section} = $classnum;
+
+      foreach my $detail ( $cust_bill_pkg->cust_bill_pkg_detail($classnum) ) {
+        my $amount = $detail->amount;
+        next unless $amount && $amount > 0;
+ 
+        $sections{$section} ||= { 'subtotal'=>0, 'calls'=>0, 'duration'=>0 };
+        $sections{$section}{amount} += $amount;  #subtotal
+        $sections{$section}{calls}++;
+        $sections{$section}{duration} += $detail->duration;
+
+        my $desc = $detail->regionname; 
+        my $description = $desc;
+        $description = substr($desc, 0, 50). '...'
+          if $format eq 'latex' && length($desc) > 50;
+
+        $lines{$section}{$desc} ||= {
+          description     => &{$escape}($description),
+          #pkgpart         => $part_pkg->pkgpart,
+          pkgnum          => $cust_bill_pkg->pkgnum,
+          ref             => '',
+          amount          => 0,
+          calls           => 0,
+          duration        => 0,
+          #unit_amount     => $cust_bill_pkg->unitrecur,
+          quantity        => $cust_bill_pkg->quantity,
+          product_code    => 'N/A',
+          ext_description => [],
+        };
+
+        $lines{$section}{$desc}{amount} += $amount;
+        $lines{$section}{$desc}{calls}++;
+        $lines{$section}{$desc}{duration} += $detail->duration;
+
+      }
+    }
+  }
+
+  my %sectionmap = ();
+  foreach (keys %sections) {
+    my $usage_class = $usage_class{$classnums{$_}};
+    $sectionmap{$_} = { 'description' => &{$escape}($_),
+                        'amount'    => $sections{$_}{amount},    #subtotal
+                        'calls'       => $sections{$_}{calls},
+                        'duration'    => $sections{$_}{duration},
+                        'summarized'  => '',
+                        'tax_section' => '',
+                        'sort_weight' => $usage_class->weight,
+                        ( $usage_class->format
+                          ? ( map { $_ => $usage_class->$_($format) }
+                              qw( description_generator header_generator total_generator total_line_generator )
+                            )
+                          : ()
+                        ), 
+                      };
+  }
+
+  my @sections = sort { $a->{sort_weight} <=> $b->{sort_weight} }
+                 values %sectionmap;
+
+  my @lines = ();
+  foreach my $section ( keys %lines ) {
+    foreach my $line ( keys %{$lines{$section}} ) {
+      my $l = $lines{$section}{$line};
+      $l->{section}     = $sectionmap{$section};
+      $l->{amount}      = sprintf( "%.2f", $l->{amount} );
+      #$l->{unit_amount} = sprintf( "%.2f", $l->{unit_amount} );
+      push @lines, $l;
+    }
+  }
+
+  return(\@sections, \@lines);
+
+}
+
+sub _did_summary {
+    my $self = shift;
+    my $end = $self->_date;
+    my $start = $end - 2592000; # 30 days
+    my $cust_main = $self->cust_main;
+    my @pkgs = $cust_main->all_pkgs;
+    my($num_activated,$num_deactivated,$num_portedin,$num_portedout,$minutes)
+	= (0,0,0,0,0);
+    my @seen = ();
+    foreach my $pkg ( @pkgs ) {
+	my @h_cust_svc = $pkg->h_cust_svc($end);
+	foreach my $h_cust_svc ( @h_cust_svc ) {
+	    next if grep {$_ eq $h_cust_svc->svcnum} @seen;
+	    next unless $h_cust_svc->part_svc->svcdb eq 'svc_phone';
+
+	    my $inserted = $h_cust_svc->date_inserted;
+	    my $deleted = $h_cust_svc->date_deleted;
+	    my $phone_inserted = $h_cust_svc->h_svc_x($inserted);
+	    my $phone_deleted;
+	    $phone_deleted =  $h_cust_svc->h_svc_x($deleted) if $deleted;
+	    
+# DID either activated or ported in; cannot be both for same DID simultaneously
+	    if ($inserted >= $start && $inserted <= $end && $phone_inserted
+		&& (!$phone_inserted->lnp_status 
+		    || $phone_inserted->lnp_status eq ''
+		    || $phone_inserted->lnp_status eq 'native')) {
+		$num_activated++;
+	    }
+	    else { # this one not so clean, should probably move to (h_)svc_phone
+		 my $phone_portedin = qsearchs( 'h_svc_phone',
+		      { 'svcnum' => $h_cust_svc->svcnum, 
+			'lnp_status' => 'portedin' },  
+		      FS::h_svc_phone->sql_h_searchs($end),  
+		    );
+		 $num_portedin++ if $phone_portedin;
+	    }
+
+# DID either deactivated or ported out;	cannot be both for same DID simultaneously
+	    if($deleted >= $start && $deleted <= $end && $phone_deleted
+		&& (!$phone_deleted->lnp_status 
+		    || $phone_deleted->lnp_status ne 'portingout')) {
+		$num_deactivated++;
+	    } 
+	    elsif($deleted >= $start && $deleted <= $end && $phone_deleted 
+		&& $phone_deleted->lnp_status 
+		&& $phone_deleted->lnp_status eq 'portingout') {
+		$num_portedout++;
+	    }
+
+	    # increment usage minutes
+	    my @cdrs = $phone_inserted->get_cdrs('begin'=>$start,'end'=>$end);
+	    foreach my $cdr ( @cdrs ) {
+		$minutes += $cdr->billsec/60;
+	    }
+
+	    # don't look at this service again
+	    push @seen, $h_cust_svc->svcnum;
+	}
+    }
+
+    $minutes = sprintf("%d", $minutes);
+    ("Activated: $num_activated  Ported-In: $num_portedin  Deactivated: "
+	. "$num_deactivated  Ported-Out: $num_portedout ",
+	    "Total Minutes: $minutes");
+}
+
+sub _items_svc_phone_sections {
+  my $self = shift;
+  my $escape = shift;
+  my $format = shift;
+
+  my %sections = ();
+  my %classnums = ();
+  my %lines = ();
+
+  my %usage_class =  map { $_->classnum => $_ } qsearch( 'usage_class', {} );
+  $usage_class{''} ||= new FS::usage_class { 'classname' => '', 'weight' => 0 };
+
+  foreach my $cust_bill_pkg ( $self->cust_bill_pkg ) {
+    next unless $cust_bill_pkg->pkgnum > 0;
+
+    my @header = $cust_bill_pkg->details_header;
+    next unless scalar(@header);
+
+    foreach my $detail ( $cust_bill_pkg->cust_bill_pkg_detail ) {
+
+      my $phonenum = $detail->phonenum;
+      next unless $phonenum;
+
+      my $amount = $detail->amount;
+      next unless $amount && $amount > 0;
+
+      $sections{$phonenum} ||= { 'amount'      => 0,
+                                 'calls'       => 0,
+                                 'duration'    => 0,
+                                 'sort_weight' => -1,
+                                 'phonenum'    => $phonenum,
+                                };
+      $sections{$phonenum}{amount} += $amount;  #subtotal
+      $sections{$phonenum}{calls}++;
+      $sections{$phonenum}{duration} += $detail->duration;
+
+      my $desc = $detail->regionname; 
+      my $description = $desc;
+      $description = substr($desc, 0, 50). '...'
+        if $format eq 'latex' && length($desc) > 50;
+
+      $lines{$phonenum}{$desc} ||= {
+        description     => &{$escape}($description),
+        #pkgpart         => $part_pkg->pkgpart,
+        pkgnum          => '',
+        ref             => '',
+        amount          => 0,
+        calls           => 0,
+        duration        => 0,
+        #unit_amount     => '',
+        quantity        => '',
+        product_code    => 'N/A',
+        ext_description => [],
+      };
+
+      $lines{$phonenum}{$desc}{amount} += $amount;
+      $lines{$phonenum}{$desc}{calls}++;
+      $lines{$phonenum}{$desc}{duration} += $detail->duration;
+
+      my $line = $usage_class{$detail->classnum}->classname;
+      $sections{"$phonenum $line"} ||=
+        { 'amount' => 0,
+          'calls' => 0,
+          'duration' => 0,
+          'sort_weight' => $usage_class{$detail->classnum}->weight,
+          'phonenum' => $phonenum,
+          'header'  => [ @header ],
+        };
+      $sections{"$phonenum $line"}{amount} += $amount;  #subtotal
+      $sections{"$phonenum $line"}{calls}++;
+      $sections{"$phonenum $line"}{duration} += $detail->duration;
+
+      $lines{"$phonenum $line"}{$desc} ||= {
+        description     => &{$escape}($description),
+        #pkgpart         => $part_pkg->pkgpart,
+        pkgnum          => '',
+        ref             => '',
+        amount          => 0,
+        calls           => 0,
+        duration        => 0,
+        #unit_amount     => '',
+        quantity        => '',
+        product_code    => 'N/A',
+        ext_description => [],
+      };
+
+      $lines{"$phonenum $line"}{$desc}{amount} += $amount;
+      $lines{"$phonenum $line"}{$desc}{calls}++;
+      $lines{"$phonenum $line"}{$desc}{duration} += $detail->duration;
+      push @{$lines{"$phonenum $line"}{$desc}{ext_description}},
+           $detail->formatted('format' => $format);
+
+    }
+  }
+
+  my %sectionmap = ();
+  my $simple = new FS::usage_class { format => 'simple' }; #bleh
+  foreach ( keys %sections ) {
+    my @header = @{ $sections{$_}{header} || [] };
+    my $usage_simple =
+      new FS::usage_class { format => 'usage_'. (scalar(@header) || 6). 'col' };
+    my $summary = $sections{$_}{sort_weight} < 0 ? 1 : 0;
+    my $usage_class = $summary ? $simple : $usage_simple;
+    my $ending = $summary ? ' usage charges' : '';
+    my %gen_opt = ();
+    unless ($summary) {
+      $gen_opt{label} = [ map{ &{$escape}($_) } @header ];
+    }
+    $sectionmap{$_} = { 'description' => &{$escape}($_. $ending),
+                        'amount'    => $sections{$_}{amount},    #subtotal
+                        'calls'       => $sections{$_}{calls},
+                        'duration'    => $sections{$_}{duration},
+                        'summarized'  => '',
+                        'tax_section' => '',
+                        'phonenum'    => $sections{$_}{phonenum},
+                        'sort_weight' => $sections{$_}{sort_weight},
+                        'post_total'  => $summary, #inspire pagebreak
+                        (
+                          ( map { $_ => $usage_class->$_($format, %gen_opt) }
+                            qw( description_generator
+                                header_generator
+                                total_generator
+                                total_line_generator
+                              )
+                          )
+                        ), 
+                      };
+  }
+
+  my @sections = sort { $a->{phonenum} cmp $b->{phonenum} ||
+                        $a->{sort_weight} <=> $b->{sort_weight}
+                      }
+                 values %sectionmap;
+
+  my @lines = ();
+  foreach my $section ( keys %lines ) {
+    foreach my $line ( keys %{$lines{$section}} ) {
+      my $l = $lines{$section}{$line};
+      $l->{section}     = $sectionmap{$section};
+      $l->{amount}      = sprintf( "%.2f", $l->{amount} );
+      #$l->{unit_amount} = sprintf( "%.2f", $l->{unit_amount} );
+      push @lines, $l;
+    }
+  }
+  
+  if($conf->exists('phone_usage_class_summary')) { 
+      # this only works with Latex
+      my @newlines;
+      my @newsections;
+
+      # after this, we'll have only two sections per DID:
+      # Calls Summary and Calls Detail
+      foreach my $section ( @sections ) {
+	if($section->{'post_total'}) {
+	    $section->{'description'} = 'Calls Summary: '.$section->{'phonenum'};
+	    $section->{'total_line_generator'} = sub { '' };
+	    $section->{'total_generator'} = sub { '' };
+	    $section->{'header_generator'} = sub { '' };
+	    $section->{'description_generator'} = '';
+	    push @newsections, $section;
+	    my %calls_detail = %$section;
+	    $calls_detail{'post_total'} = '';
+	    $calls_detail{'sort_weight'} = '';
+	    $calls_detail{'description_generator'} = sub { '' };
+	    $calls_detail{'header_generator'} = sub {
+		return ' & Date/Time & Called Number & Duration & Price'
+		    if $format eq 'latex';
+		'';
+	    };
+	    $calls_detail{'description'} = 'Calls Detail: '
+						    . $section->{'phonenum'};
+	    push @newsections, \%calls_detail;	
+	}
+      }
+
+      # after this, each usage class is collapsed/summarized into a single
+      # line under the Calls Summary section
+      foreach my $newsection ( @newsections ) {
+	if($newsection->{'post_total'}) { # this means Calls Summary
+	    foreach my $section ( @sections ) {
+		next unless ($section->{'phonenum'} eq $newsection->{'phonenum'} 
+				&& !$section->{'post_total'});
+		my $newdesc = $section->{'description'};
+		my $tn = $section->{'phonenum'};
+		$newdesc =~ s/$tn//g;
+		my $line = {  ext_description => [],
+			      pkgnum => '',
+			      ref => '',
+			      quantity => '',
+			      calls => $section->{'calls'},
+			      section => $newsection,
+			      duration => $section->{'duration'},
+			      description => $newdesc,
+			      amount => sprintf("%.2f",$section->{'amount'}),
+			      product_code => 'N/A',
+			    };
+		push @newlines, $line;
+	    }
+	}
+      }
+
+      # after this, Calls Details is populated with all CDRs
+      foreach my $newsection ( @newsections ) {
+	if(!$newsection->{'post_total'}) { # this means Calls Details
+	    foreach my $line ( @lines ) {
+		next unless (scalar(@{$line->{'ext_description'}}) &&
+			$line->{'section'}->{'phonenum'} eq $newsection->{'phonenum'}
+			    );
+		my @extdesc = @{$line->{'ext_description'}};
+		my @newextdesc;
+		foreach my $extdesc ( @extdesc ) {
+		    $extdesc =~ s/scriptsize/normalsize/g if $format eq 'latex';
+		    push @newextdesc, $extdesc;
+		}
+		$line->{'ext_description'} = \@newextdesc;
+		$line->{'section'} = $newsection;
+		push @newlines, $line;
+	    }
+	}
+      }
+
+      return(\@newsections, \@newlines);
+  }
+
+  return(\@sections, \@lines);
+
+}
+
+sub _items {
+  my $self = shift;
+
+  #my @display = scalar(@_)
+  #              ? @_
+  #              : qw( _items_previous _items_pkg );
+  #              #: qw( _items_pkg );
+  #              #: qw( _items_previous _items_pkg _items_tax _items_credits _items_payments );
+  my @display = qw( _items_previous _items_pkg );
+
+  my @b = ();
+  foreach my $display ( @display ) {
+    push @b, $self->$display(@_);
+  }
+  @b;
+}
+
+sub _items_previous {
+  my $self = shift;
+  my $cust_main = $self->cust_main;
+  my( $pr_total, @pr_cust_bill ) = $self->previous; #previous balance
+  my @b = ();
+  foreach ( @pr_cust_bill ) {
+    my $date = $conf->exists('invoice_show_prior_due_date')
+               ? 'due '. $_->due_date2str($date_format)
+               : time2str($date_format, $_->_date);
+    push @b, {
+      'description' => 'Previous Balance, Invoice #'. $_->invnum. " ($date)",
+      #'pkgpart'     => 'N/A',
+      'pkgnum'      => 'N/A',
+      'amount'      => sprintf("%.2f", $_->owed),
+    };
+  }
+  @b;
+
+  #{
+  #    'description'     => 'Previous Balance',
+  #    #'pkgpart'         => 'N/A',
+  #    'pkgnum'          => 'N/A',
+  #    'amount'          => sprintf("%10.2f", $pr_total ),
+  #    'ext_description' => [ map {
+  #                                 "Invoice ". $_->invnum.
+  #                                 " (". time2str("%x",$_->_date). ") ".
+  #                                 sprintf("%10.2f", $_->owed)
+  #                         } @pr_cust_bill ],
+
+  #};
+}
+
+sub _items_pkg {
+  my $self = shift;
+  my %options = @_;
+
+  warn "$me _items_pkg searching for all package line items\n"
+    if $DEBUG > 1;
+
+  my @cust_bill_pkg = grep { $_->pkgnum } $self->cust_bill_pkg;
+
+  warn "$me _items_pkg filtering line items\n"
+    if $DEBUG > 1;
+  my @items = $self->_items_cust_bill_pkg(\@cust_bill_pkg, @_);
+
+  if ($options{section} && $options{section}->{condensed}) {
+
+    warn "$me _items_pkg condensing section\n"
+      if $DEBUG > 1;
+
+    my %itemshash = ();
+    local $Storable::canonical = 1;
+    foreach ( @items ) {
+      my $item = { %$_ };
+      delete $item->{ref};
+      delete $item->{ext_description};
+      my $key = freeze($item);
+      $itemshash{$key} ||= 0;
+      $itemshash{$key} ++; # += $item->{quantity};
     }
+    @items = sort { $a->{description} cmp $b->{description} }
+             map { my $i = thaw($_);
+                   $i->{quantity} = $itemshash{$_};
+                   $i->{amount} =
+                     sprintf( "%.2f", $i->{quantity} * $i->{amount} );#unit_amount
+                   $i;
+                 }
+             keys %itemshash;
+  }
 
-    $csv->combine(
-      'cust_bill_pkg',
-      $self->invnum,
-      ( map { '' } (1..11) ),
-      ($pkg, $setup, $recur, $sdate, $edate)
-    ) or die "can't create csv";
-    print CSV $csv->string. "\n";
+  warn "$me _items_pkg returning ". scalar(@items). " items\n"
+    if $DEBUG > 1;
+
+  @items;
+}
+
+sub _taxsort {
+  return 0 unless $a->itemdesc cmp $b->itemdesc;
+  return -1 if $b->itemdesc eq 'Tax';
+  return 1 if $a->itemdesc eq 'Tax';
+  return -1 if $b->itemdesc eq 'Other surcharges';
+  return 1 if $a->itemdesc eq 'Other surcharges';
+  $a->itemdesc cmp $b->itemdesc;
+}
+
+sub _items_tax {
+  my $self = shift;
+  my @cust_bill_pkg = sort _taxsort grep { ! $_->pkgnum } $self->cust_bill_pkg;
+  $self->_items_cust_bill_pkg(\@cust_bill_pkg, @_);
+}
+
+sub _items_cust_bill_pkg {
+  my $self = shift;
+  my $cust_bill_pkgs = shift;
+  my %opt = @_;
+
+  my $format = $opt{format} || '';
+  my $escape_function = $opt{escape_function} || sub { shift };
+  my $format_function = $opt{format_function} || '';
+  my $unsquelched = $opt{unsquelched} || '';
+  my $section = $opt{section}->{description} if $opt{section};
+  my $summary_page = $opt{summary_page} || '';
+  my $multilocation = $opt{multilocation} || '';
+  my $multisection = $opt{multisection} || '';
+  my $discount_show_always = 0;
+
+  my @b = ();
+  my ($s, $r, $u) = ( undef, undef, undef );
+  foreach my $cust_bill_pkg ( @$cust_bill_pkgs )
+  {
+
+    warn "$me _items_cust_bill_pkg considering cust_bill_pkg $cust_bill_pkg\n"
+      if $DEBUG > 1;
+
+    $discount_show_always = ($cust_bill_pkg->cust_bill_pkg_discount
+        			&& $conf->exists('discount-show-always'));
+
+    foreach ( $s, $r, ($opt{skip_usage} ? () : $u ) ) {
+      if ( $_ && !$cust_bill_pkg->hidden ) {
+        $_->{amount}      = sprintf( "%.2f", $_->{amount} ),
+        $_->{amount}      =~ s/^\-0\.00$/0.00/;
+        $_->{unit_amount} = sprintf( "%.2f", $_->{unit_amount} ),
+        push @b, { %$_ }
+          unless ( $_->{amount} == 0 && !$discount_show_always );
+        $_ = undef;
+      }
+    }
+
+    foreach my $display ( grep { defined($section)
+                                 ? $_->section eq $section
+                                 : 1
+                               }
+                          #grep { !$_->summary || !$summary_page } # bunk!
+                          grep { !$_->summary || $multisection }
+                          $cust_bill_pkg->cust_bill_pkg_display
+                        )
+    {
+
+      warn "$me _items_cust_bill_pkg considering display item $display\n"
+        if $DEBUG > 1;
+
+      my $type = $display->type;
+
+      my $desc = $cust_bill_pkg->desc;
+      $desc = substr($desc, 0, 50). '...'
+        if $format eq 'latex' && length($desc) > 50;
+
+      my %details_opt = ( 'format'          => $format,
+                          'escape_function' => $escape_function,
+                          'format_function' => $format_function,
+                        );
+
+      if ( $cust_bill_pkg->pkgnum > 0 ) {
+
+        warn "$me _items_cust_bill_pkg cust_bill_pkg is non-tax\n"
+          if $DEBUG > 1;
+ 
+        my $cust_pkg = $cust_bill_pkg->cust_pkg;
+
+        if ( $cust_bill_pkg->setup != 0 && (!$type || $type eq 'S') ) {
+
+          warn "$me _items_cust_bill_pkg adding setup\n"
+            if $DEBUG > 1;
+
+          my $description = $desc;
+          $description .= ' Setup' if $cust_bill_pkg->recur != 0;
+
+          my @d = ();
+          unless ( $cust_pkg->part_pkg->hide_svc_detail
+                || $cust_bill_pkg->hidden )
+          {
+
+            push @d, map &{$escape_function}($_),
+                         $cust_pkg->h_labels_short($self->_date, undef, 'I')
+              unless $cust_bill_pkg->pkgpart_override; #don't redisplay services
+
+            if ( $multilocation ) {
+              my $loc = $cust_pkg->location_label;
+              $loc = substr($loc, 0, 50). '...'
+                if $format eq 'latex' && length($loc) > 50;
+              push @d, &{$escape_function}($loc);
+            }
+
+          }
+
+          push @d, $cust_bill_pkg->details(%details_opt)
+            if $cust_bill_pkg->recur == 0;
+
+          if ( $cust_bill_pkg->hidden ) {
+            $s->{amount}      += $cust_bill_pkg->setup;
+            $s->{unit_amount} += $cust_bill_pkg->unitsetup;
+            push @{ $s->{ext_description} }, @d;
+          } else {
+            $s = {
+              description     => $description,
+              #pkgpart         => $part_pkg->pkgpart,
+              pkgnum          => $cust_bill_pkg->pkgnum,
+              amount          => $cust_bill_pkg->setup,
+              unit_amount     => $cust_bill_pkg->unitsetup,
+              quantity        => $cust_bill_pkg->quantity,
+              ext_description => \@d,
+            };
+          };
+
+        }
+
+        if ( ( $cust_bill_pkg->recur != 0  || $cust_bill_pkg->setup == 0 || 
+		($discount_show_always && $cust_bill_pkg->recur == 0) ) &&
+             ( !$type || $type eq 'R' || $type eq 'U' )
+           )
+        {
+
+          warn "$me _items_cust_bill_pkg adding recur/usage\n"
+            if $DEBUG > 1;
+
+          my $is_summary = $display->summary;
+          my $description = ($is_summary && $type && $type eq 'U')
+                            ? "Usage charges" : $desc;
+
+          $description .= " (" . time2str($date_format, $cust_bill_pkg->sdate).
+                          " - ". time2str($date_format, $cust_bill_pkg->edate).
+                          ")"
+            unless $conf->exists('disable_line_item_date_ranges');
+
+          my @d = ();
+
+          #at least until cust_bill_pkg has "past" ranges in addition to
+          #the "future" sdate/edate ones... see #3032
+          my @dates = ( $self->_date );
+          my $prev = $cust_bill_pkg->previous_cust_bill_pkg;
+          push @dates, $prev->sdate if $prev;
+          push @dates, undef if !$prev;
+
+          unless ( $cust_pkg->part_pkg->hide_svc_detail
+                || $cust_bill_pkg->itemdesc
+                || $cust_bill_pkg->hidden
+                || $is_summary && $type && $type eq 'U' )
+          {
+
+            warn "$me _items_cust_bill_pkg adding service details\n"
+              if $DEBUG > 1;
+
+            push @d, map &{$escape_function}($_),
+                         $cust_pkg->h_labels_short(@dates, 'I')
+                                                   #$cust_bill_pkg->edate,
+                                                   #$cust_bill_pkg->sdate)
+              unless $cust_bill_pkg->pkgpart_override; #don't redisplay services
+
+            warn "$me _items_cust_bill_pkg done adding service details\n"
+              if $DEBUG > 1;
+
+            if ( $multilocation ) {
+              my $loc = $cust_pkg->location_label;
+              $loc = substr($loc, 0, 50). '...'
+                if $format eq 'latex' && length($loc) > 50;
+              push @d, &{$escape_function}($loc);
+            }
+
+          }
+
+          unless ( $is_summary ) {
+            warn "$me _items_cust_bill_pkg adding details\n"
+              if $DEBUG > 1;
+
+            #instead of omitting details entirely in this case (unwanted side
+            # effects), just omit CDRs
+            $details_opt{'format_function'} = sub { () }
+              if $type && $type eq 'R';
+
+            push @d, $cust_bill_pkg->details(%details_opt);
+          }
+
+          warn "$me _items_cust_bill_pkg calculating amount\n"
+            if $DEBUG > 1;
+  
+          my $amount = 0;
+          if (!$type) {
+            $amount = $cust_bill_pkg->recur;
+          } elsif ($type eq 'R') {
+            $amount = $cust_bill_pkg->recur - $cust_bill_pkg->usage;
+          } elsif ($type eq 'U') {
+            $amount = $cust_bill_pkg->usage;
+          }
+  
+          if ( !$type || $type eq 'R' ) {
+
+            warn "$me _items_cust_bill_pkg adding recur\n"
+              if $DEBUG > 1;
+
+            if ( $cust_bill_pkg->hidden ) {
+              $r->{amount}      += $amount;
+              $r->{unit_amount} += $cust_bill_pkg->unitrecur;
+              push @{ $r->{ext_description} }, @d;
+            } else {
+              $r = {
+                description     => $description,
+                #pkgpart         => $part_pkg->pkgpart,
+                pkgnum          => $cust_bill_pkg->pkgnum,
+                amount          => $amount,
+                unit_amount     => $cust_bill_pkg->unitrecur,
+                quantity        => $cust_bill_pkg->quantity,
+                ext_description => \@d,
+              };
+            }
+
+          } else {  # $type eq 'U'
+
+            warn "$me _items_cust_bill_pkg adding usage\n"
+              if $DEBUG > 1;
+
+            if ( $cust_bill_pkg->hidden ) {
+              $u->{amount}      += $amount;
+              $u->{unit_amount} += $cust_bill_pkg->unitrecur;
+              push @{ $u->{ext_description} }, @d;
+            } else {
+              $u = {
+                description     => $description,
+                #pkgpart         => $part_pkg->pkgpart,
+                pkgnum          => $cust_bill_pkg->pkgnum,
+                amount          => $amount,
+                unit_amount     => $cust_bill_pkg->unitrecur,
+                quantity        => $cust_bill_pkg->quantity,
+                ext_description => \@d,
+              };
+            }
+
+          }
+
+        } # recurring or usage with recurring charge
+
+      } else { #pkgnum tax or one-shot line item (??)
+
+        warn "$me _items_cust_bill_pkg cust_bill_pkg is tax\n"
+          if $DEBUG > 1;
+
+        if ( $cust_bill_pkg->setup != 0 ) {
+          push @b, {
+            'description' => $desc,
+            'amount'      => sprintf("%.2f", $cust_bill_pkg->setup),
+          };
+        }
+        if ( $cust_bill_pkg->recur != 0 ) {
+          push @b, {
+            'description' => "$desc (".
+                             time2str($date_format, $cust_bill_pkg->sdate). ' - '.
+                             time2str($date_format, $cust_bill_pkg->edate). ')',
+            'amount'      => sprintf("%.2f", $cust_bill_pkg->recur),
+          };
+        }
+
+      }
+
+    }
 
   }
 
-  close CSV or die "can't close CSV: $!";
+  warn "$me _items_cust_bill_pkg done considering cust_bill_pkgs\n"
+    if $DEBUG > 1;
 
-  #part two: upload it
+  foreach ( $s, $r, ($opt{skip_usage} ? () : $u ) ) {
+    if ( $_  ) {
+      $_->{amount}      = sprintf( "%.2f", $_->{amount} ),
+      $_->{amount}      =~ s/^\-0\.00$/0.00/;
+      $_->{unit_amount} = sprintf( "%.2f", $_->{unit_amount} ),
+      push @b, { %$_ }
+        unless ( $_->{amount} == 0 && !$discount_show_always );
+    }
+  }
 
-  my $net;
-  if ( $opt{protocol} eq 'ftp' ) {
-    eval "use Net::FTP;";
-    die $@ if $@;
-    $net = Net::FTP->new($opt{server}) or die @$;
-  } else {
-    die "unknown protocol: $opt{protocol}";
+  @b;
+
+}
+
+sub _items_credits {
+  my( $self, %opt ) = @_;
+  my $trim_len = $opt{'trim_len'} || 60;
+
+  my @b;
+  #credits
+  foreach ( $self->cust_credited ) {
+
+    #something more elaborate if $_->amount ne $_->cust_credit->credited ?
+
+    my $reason = substr($_->cust_credit->reason, 0, $trim_len);
+    $reason .= '...' if length($reason) < length($_->cust_credit->reason);
+    $reason = " ($reason) " if $reason;
+
+    push @b, {
+      #'description' => 'Credit ref\#'. $_->crednum.
+      #                 " (". time2str("%x",$_->cust_credit->_date) .")".
+      #                 $reason,
+      'description' => 'Credit applied '.
+                       time2str($date_format,$_->cust_credit->_date). $reason,
+      'amount'      => sprintf("%.2f",$_->amount),
+    };
   }
 
-  $net->login( $opt{username}, $opt{password} )
-    or die "can't FTP to $opt{username}\@$opt{server}: login error: $@";
+  @b;
 
-  $net->binary or die "can't set binary mode";
+}
 
-  $net->cwd($opt{dir}) or die "can't cwd to $opt{dir}";
+sub _items_payments {
+  my $self = shift;
 
-  $net->put($file) or die "can't put $file: $!";
+  my @b;
+  #get & print payments
+  foreach ( $self->cust_bill_pay ) {
 
-  $net->quit;
+    #something more elaborate if $_->amount ne ->cust_pay->paid ?
 
-  unlink $file;
+    push @b, {
+      'description' => "Payment received ".
+                       time2str($date_format,$_->cust_pay->_date ),
+      'amount'      => sprintf("%.2f", $_->amount )
+    };
+  }
+
+  @b;
 
 }
 
-=item comp
+=item call_details [ OPTION => VALUE ... ]
 
-Pays this invoice with a compliemntary payment.  If there is an error,
-returns the error, otherwise returns false.
+Returns an array of CSV strings representing the call details for this invoice
+The only option available is the boolean prepend_billed_number
 
 =cut
 
-sub comp {
-  my $self = shift;
-  my $cust_pay = new FS::cust_pay ( {
-    'invnum'   => $self->invnum,
-    'paid'     => $self->owed,
-    '_date'    => '',
-    'payby'    => 'COMP',
-    'payinfo'  => $self->cust_main->payinfo,
-    'paybatch' => '',
-  } );
-  $cust_pay->insert;
+sub call_details {
+  my ($self, %opt) = @_;
+
+  my $format_function = sub { shift };
+
+  if ($opt{prepend_billed_number}) {
+    $format_function = sub {
+      my $detail = shift;
+      my $row = shift;
+
+      $row->amount ? $row->phonenum. ",". $detail : '"Billed number",'. $detail;
+      
+    };
+  }
+
+  my @details = map { $_->details( 'format_function' => $format_function,
+                                   'escape_function' => sub{ return() },
+                                 )
+                    }
+                  grep { $_->pkgnum }
+                  $self->cust_bill_pkg;
+  my $header = $details[0];
+  ( $header, grep { $_ ne $header } @details );
 }
 
-=item realtime_card
 
-Attempts to pay this invoice with a credit card payment via a
-Business::OnlinePayment realtime gateway.  See
-http://search.cpan.org/search?mode=module&query=Business%3A%3AOnlinePayment
-for supported processors.
+=back
+
+=head1 SUBROUTINES
+
+=over 4
+
+=item process_reprint
 
 =cut
 
-sub realtime_card {
-  my $self = shift;
-  $self->realtime_bop('CC', @_);
+sub process_reprint {
+  process_re_X('print', @_);
 }
 
-=item realtime_ach
+=item process_reemail
 
-Attempts to pay this invoice with an electronic check (ACH) payment via a
-Business::OnlinePayment realtime gateway.  See
-http://search.cpan.org/search?mode=module&query=Business%3A%3AOnlinePayment
-for supported processors.
+=cut
+
+sub process_reemail {
+  process_re_X('email', @_);
+}
+
+=item process_refax
 
 =cut
 
-sub realtime_ach {
-  my $self = shift;
-  $self->realtime_bop('CHECK', @_);
+sub process_refax {
+  process_re_X('fax', @_);
 }
 
-sub realtime_bop {
-  my $self = shift;
-  my $method = shift;
-  my $cust_main = $self->cust_main;
-  my $amount = $self->owed;
+=item process_reftp
 
-  unless ( $processor =~ /^Business::OnlinePayment::(.*)$/ ) {
-    return "Real-time card/ACH processing not enabled (processor $processor)";
-  }
-  my $bop_processor = $1; #hmm?
+=cut
 
-  my $address = $cust_main->address1;
-  $address .= ", ". $cust_main->address2 if $cust_main->address2;
+sub process_reftp {
+  process_re_X('ftp', @_);
+}
 
-  my($payname, $payfirst, $paylast);
-  if ( $cust_main->payname && $method ne 'CHECK' ) {
-    $payname = $cust_main->payname;
-    $payname =~ /^\s*([\w \,\.\-\']*)?\s+([\w\,\.\-\']+)\s*$/
-      or do {
-              #$dbh->rollback if $oldAutoCommit;
-              return "Illegal payname $payname";
-            };
-    ($payfirst, $paylast) = ($1, $2);
-  } else {
-    $payfirst = $cust_main->getfield('first');
-    $paylast = $cust_main->getfield('last');
-    $payname =  "$payfirst $paylast";
-  }
+=item respool
 
-  my @invoicing_list = grep { $_ ne 'POST' } $cust_main->invoicing_list;
-  if ( $conf->exists('emailinvoiceauto')
-       || ( $conf->exists('emailinvoiceonly') && ! @invoicing_list ) ) {
-    push @invoicing_list, $cust_main->all_emails;
-  }
-  my $email = $invoicing_list[0];
+=cut
 
-  my( $action1, $action2 ) = split(/\s*\,\s*/, $bop_action );
+sub process_respool {
+  process_re_X('spool', @_);
+}
 
-  my $description = 'Internet Services';
-  if ( $conf->exists('business-onlinepayment-description') ) {
-    my $dtempl = $conf->config('business-onlinepayment-description');
+use Storable qw(thaw);
+use Data::Dumper;
+use MIME::Base64;
+sub process_re_X {
+  my( $method, $job ) = ( shift, shift );
+  warn "$me process_re_X $method for job $job\n" if $DEBUG;
 
-    my $agent_obj = $cust_main->agent
-      or die "can't retreive agent for $cust_main (agentnum ".
-             $cust_main->agentnum. ")";
-    my $agent = $agent_obj->agent;
-    my $pkgs = join(', ',
-      map { $_->cust_pkg->part_pkg->pkg }
-        grep { $_->pkgnum } $self->cust_bill_pkg
-    );
-    $description = eval qq("$dtempl");
+  my $param = thaw(decode_base64(shift));
+  warn Dumper($param) if $DEBUG;
 
-  }
+  re_X(
+    $method,
+    $job,
+    %$param,
+  );
+
+}
 
-  my %content;
-  if ( $method eq 'CC' ) { 
-    $content{card_number} = $cust_main->payinfo;
-    $cust_main->paydate =~ /^\d{2}(\d{2})[\/\-](\d+)[\/\-]\d+$/;
-    $content{expiration} = "$2/$1";
-  } elsif ( $method eq 'CHECK' ) {
-    my($account_number,$routing_code) = $cust_main->payinfo;
-    ( $content{account_number}, $content{routing_code} ) =
-      split('@', $cust_main->payinfo);
-    $content{bank_name} = $cust_main->payname;
+sub re_X {
+  my($method, $job, %param ) = @_;
+  if ( $DEBUG ) {
+    warn "re_X $method for job $job with param:\n".
+         join( '', map { "  $_ => ". $param{$_}. "\n" } keys %param );
   }
-  
-  my $transaction =
-    new Business::OnlinePayment( $bop_processor, @bop_options );
-  $transaction->content(
-    %content,
-    'type'           => $method,
-    'login'          => $bop_login,
-    'password'       => $bop_password,
-    'action'         => $action1,
-    'description'    => $description,
-    'amount'         => $amount,
-    'invoice_number' => $self->invnum,
-    'customer_id'    => $self->custnum,
-    'last_name'      => $paylast,
-    'first_name'     => $payfirst,
-    'name'           => $payname,
-    'address'        => $address,
-    'city'           => $cust_main->city,
-    'state'          => $cust_main->state,
-    'zip'            => $cust_main->zip,
-    'country'        => $cust_main->country,
-    'referer'        => 'http://cleanwhisker.420.am/',
-    'email'          => $email,
-    'phone'          => $cust_main->daytime || $cust_main->night,
-  );
-  $transaction->submit();
-
-  if ( $transaction->is_success() && $action2 ) {
-    my $auth = $transaction->authorization;
-    my $ordernum = $transaction->can('order_number')
-                   ? $transaction->order_number
-                   : '';
-
-    #warn "********* $auth ***********\n";
-    #warn "********* $ordernum ***********\n";
-    my $capture =
-      new Business::OnlinePayment( $bop_processor, @bop_options );
-
-    my %capture = (
-      %content,
-      type           => $method,
-      action         => $action2,
-      login          => $bop_login,
-      password       => $bop_password,
-      order_number   => $ordernum,
-      amount         => $amount,
-      authorization  => $auth,
-      description    => $description,
-    );
 
-    foreach my $field (qw( authorization_source_code returned_ACI                                          transaction_identifier validation_code           
-                           transaction_sequence_num local_transaction_date    
-                           local_transaction_time AVS_result_code          )) {
-      $capture{$field} = $transaction->$field() if $transaction->can($field);
-    }
+  #some false laziness w/search/cust_bill.html
+  my $distinct = '';
+  my $orderby = 'ORDER BY cust_bill._date';
+
+  my $extra_sql = ' WHERE '. FS::cust_bill->search_sql_where(\%param);
+
+  my $addl_from = 'LEFT JOIN cust_main USING ( custnum )';
+     
+  my @cust_bill = qsearch( {
+    #'select'    => "cust_bill.*",
+    'table'     => 'cust_bill',
+    'addl_from' => $addl_from,
+    'hashref'   => {},
+    'extra_sql' => $extra_sql,
+    'order_by'  => $orderby,
+    'debug' => 1,
+  } );
 
-    $capture->content( %capture );
+  $method .= '_invoice' unless $method eq 'email' || $method eq 'print';
 
-    $capture->submit();
+  warn " $me re_X $method: ". scalar(@cust_bill). " invoices found\n"
+    if $DEBUG;
 
-    unless ( $capture->is_success ) {
-      my $e = "Authorization sucessful but capture failed, invnum #".
-              $self->invnum. ': '.  $capture->result_code.
-              ": ". $capture->error_message;
-      warn $e;
-      return $e;
+  my( $num, $last, $min_sec ) = (0, time, 5); #progresbar foo
+  foreach my $cust_bill ( @cust_bill ) {
+    $cust_bill->$method();
+
+    if ( $job ) { #progressbar foo
+      $num++;
+      if ( time - $min_sec > $last ) {
+        my $error = $job->update_statustext(
+          int( 100 * $num / scalar(@cust_bill) )
+        );
+        die $error if $error;
+        $last = time;
+      }
     }
 
   }
 
-  if ( $transaction->is_success() ) {
+}
 
-    my %method2payby = (
-      'CC'    => 'CARD',
-      'CHECK' => 'CHEK',
-    );
+=back
 
-    my $cust_pay = new FS::cust_pay ( {
-       'invnum'   => $self->invnum,
-       'paid'     => $amount,
-       '_date'     => '',
-       'payby'    => method2payby{$method},
-       'payinfo'  => $cust_main->payinfo,
-       'paybatch' => "$processor:". $transaction->authorization,
-    } );
-    my $error = $cust_pay->insert;
-    if ( $error ) {
-      # gah, even with transactions.
-      my $e = 'WARNING: Card/ACH debited but database not updated - '.
-              'error applying payment, invnum #' . $self->invnum.
-              " ($processor): $error";
-      warn $e;
-      return $e;
-    } else {
-      return '';
-    }
-  #} elsif ( $options{'report_badcard'} ) {
-  } else {
+=head1 CLASS METHODS
 
-    my $perror = "$processor error, invnum #". $self->invnum. ': '.
-                 $transaction->result_code. ": ". $transaction->error_message;
-
-    if ( $conf->exists('emaildecline')
-         && grep { $_ ne 'POST' } $cust_main->invoicing_list
-    ) {
-      my @templ = $conf->config('declinetemplate');
-      my $template = new Text::Template (
-        TYPE   => 'ARRAY',
-        SOURCE => [ map "$_\n", @templ ],
-      ) or return "($perror) can't create template: $Text::Template::ERROR";
-      $template->compile()
-        or return "($perror) can't compile template: $Text::Template::ERROR";
-
-      my $templ_hash = { error => $transaction->error_message };
-
-      #false laziness w/FS::cust_pay::delete & fs_signup_server && ::send
-      $ENV{MAILADDRESS} = $invoice_from;
-      my $header = new Mail::Header ( [
-        "From: $invoice_from",
-        "To: ". join(', ', grep { $_ ne 'POST' } $cust_main->invoicing_list ),
-        "Sender: $invoice_from",
-        "Reply-To: $invoice_from",
-        "Date: ". time2str("%a, %d %b %Y %X %z", time),
-        "Subject: Your payment could not be processed",
-      ] );
-      my $message = new Mail::Internet (
-        'Header' => $header,
-        'Body' => [ $template->fill_in(HASH => $templ_hash) ],
-      );
-      $!=0;
-      $message->smtpsend( Host => $smtpmachine )
-        or $message->smtpsend( Host => $smtpmachine, Debug => 1 )
-          or return "($perror) (customer # ". $self->custnum.
-            ") can't send card decline email to ".
-            join(', ', grep { $_ ne 'POST' } $cust_main->invoicing_list ).
-            " via server $smtpmachine with SMTP: $!";
-    }
-  
-    return $perror;
-  }
+=over 4
+
+=item owed_sql
+
+Returns an SQL fragment to retreive the amount owed (charged minus credited and paid).
+
+=cut
 
+sub owed_sql {
+  my ($class, $start, $end) = @_;
+  'charged - '. 
+    $class->paid_sql($start, $end). ' - '. 
+    $class->credited_sql($start, $end);
 }
 
-=item batch_card
+=item net_sql
 
-Adds a payment for this invoice to the pending credit card batch (see
-L<FS::cust_pay_batch>).
+Returns an SQL fragment to retreive the net amount (charged minus credited).
 
 =cut
 
-sub batch_card {
-  my $self = shift;
-  my $cust_main = $self->cust_main;
+sub net_sql {
+  my ($class, $start, $end) = @_;
+  'charged - '. $class->credited_sql($start, $end);
+}
 
-  my $cust_pay_batch = new FS::cust_pay_batch ( {
-    'invnum'   => $self->getfield('invnum'),
-    'custnum'  => $cust_main->getfield('custnum'),
-    'last'     => $cust_main->getfield('last'),
-    'first'    => $cust_main->getfield('first'),
-    'address1' => $cust_main->getfield('address1'),
-    'address2' => $cust_main->getfield('address2'),
-    'city'     => $cust_main->getfield('city'),
-    'state'    => $cust_main->getfield('state'),
-    'zip'      => $cust_main->getfield('zip'),
-    'country'  => $cust_main->getfield('country'),
-    'trancode' => 77,
-    'cardnum'  => $cust_main->getfield('payinfo'),
-    'exp'      => $cust_main->getfield('paydate'),
-    'payname'  => $cust_main->getfield('payname'),
-    'amount'   => $self->owed,
-  } );
-  my $error = $cust_pay_batch->insert;
-  die $error if $error;
+=item paid_sql
 
-  '';
+Returns an SQL fragment to retreive the amount paid against this invoice.
+
+=cut
+
+sub paid_sql {
+  my ($class, $start, $end) = @_;
+  $start &&= "AND cust_bill_pay._date <= $start";
+  $end   &&= "AND cust_bill_pay._date > $end";
+  $start = '' unless defined($start);
+  $end   = '' unless defined($end);
+  "( SELECT COALESCE(SUM(amount),0) FROM cust_bill_pay
+       WHERE cust_bill.invnum = cust_bill_pay.invnum $start $end  )";
 }
 
-=item print_text [TIME];
+=item credited_sql
 
-Returns an text invoice, as a list of lines.
+Returns an SQL fragment to retreive the amount credited against this invoice.
 
-TIME an optional value used to control the printing of overdue messages.  The
-default is now.  It isn't the date of the invoice; that's the `_date' field.
-It is specified as a UNIX timestamp; see L<perlfunc/"time">.  Also see
-L<Time::Local> and L<Date::Parse> for conversion functions.
+=cut
+
+sub credited_sql {
+  my ($class, $start, $end) = @_;
+  $start &&= "AND cust_credit_bill._date <= $start";
+  $end   &&= "AND cust_credit_bill._date >  $end";
+  $start = '' unless defined($start);
+  $end   = '' unless defined($end);
+  "( SELECT COALESCE(SUM(amount),0) FROM cust_credit_bill
+       WHERE cust_bill.invnum = cust_credit_bill.invnum $start $end  )";
+}
+
+=item due_date_sql
+
+Returns an SQL fragment to retrieve the due date of an invoice.
+Currently only supported on PostgreSQL.
 
 =cut
 
-sub print_text {
+sub due_date_sql {
+'COALESCE(
+  SUBSTRING(
+    COALESCE(
+      cust_bill.invoice_terms,
+      cust_main.invoice_terms,
+      \''.($conf->config('invoice_default_terms') || '').'\'
+    ), E\'Net (\\\\d+)\'
+  )::INTEGER, 0
+) * 86400 + cust_bill._date'
+}
 
-  my( $self, $today, $template ) = @_;
-  $today ||= time;
-#  my $invnum = $self->invnum;
-  my $cust_main = qsearchs('cust_main', { 'custnum', $self->custnum } );
-  $cust_main->payname( $cust_main->first. ' '. $cust_main->getfield('last') )
-    unless $cust_main->payname && $cust_main->payby ne 'CHEK';
+=item search_sql_where HASHREF
 
-  my( $pr_total, @pr_cust_bill ) = $self->previous; #previous balance
-#  my( $cr_total, @cr_cust_credit ) = $self->cust_credit; #credits
-  #my $balance_due = $self->owed + $pr_total - $cr_total;
-  my $balance_due = $self->owed + $pr_total;
+Class method which returns an SQL WHERE fragment to search for parameters
+specified in HASHREF.  Valid parameters are
 
-  #my @collect = ();
-  #my($description,$amount);
-  @buf = ();
+=over 4
 
-  #previous balance
-  foreach ( @pr_cust_bill ) {
-    push @buf, [
-      "Previous Balance, Invoice #". $_->invnum. 
-                 " (". time2str("%x",$_->_date). ")",
-      $money_char. sprintf("%10.2f",$_->owed)
-    ];
-  }
-  if (@pr_cust_bill) {
-    push @buf,['','-----------'];
-    push @buf,[ 'Total Previous Balance',
-                $money_char. sprintf("%10.2f",$pr_total ) ];
-    push @buf,['',''];
-  }
+=item _date
 
-  #new charges
-  foreach ( ( grep {   $_->pkgnum } $self->cust_bill_pkg ),  #packages first
-            ( grep { ! $_->pkgnum } $self->cust_bill_pkg ),  #then taxes
-  ) {
+List reference of start date, end date, as UNIX timestamps.
 
-    if ( $_->pkgnum ) {
+=item invnum_min
 
-      my($cust_pkg)=qsearchs('cust_pkg', { 'pkgnum', $_->pkgnum } );
-      my($part_pkg)=qsearchs('part_pkg',{'pkgpart'=>$cust_pkg->pkgpart});
-      my($pkg)=$part_pkg->pkg;
+=item invnum_max
 
-      if ( $_->setup != 0 ) {
-        push @buf, [ "$pkg Setup", $money_char. sprintf("%10.2f",$_->setup) ];
-        push @buf,
-          map { [ "  ". $_->[0]. ": ". $_->[1], '' ] } $cust_pkg->labels;
-      }
+=item agentnum
 
-      if ( $_->recur != 0 ) {
-        push @buf, [
-          "$pkg (" . time2str("%x",$_->sdate) . " - " .
-                                time2str("%x",$_->edate) . ")",
-          $money_char. sprintf("%10.2f",$_->recur)
-        ];
-        push @buf,
-          map { [ "  ". $_->[0]. ": ". $_->[1], '' ] } $cust_pkg->labels;
-      }
+=item charged
 
-    } else { #pkgnum tax
-      my $itemdesc = defined $_->dbdef_table->column('itemdesc')
-                     ? ( $_->itemdesc || 'Tax' )
-                     : 'Tax';
-      push @buf,[$itemdesc, $money_char. sprintf("%10.2f",$_->setup) ] 
-        if $_->setup != 0;
-    }
-  }
+List reference of charged limits (exclusive).
 
-  push @buf,['','-----------'];
-  push @buf,['Total New Charges',
-             $money_char. sprintf("%10.2f",$self->charged) ];
-  push @buf,['',''];
+=item owed
 
-  push @buf,['','-----------'];
-  push @buf,['Total Charges',
-             $money_char. sprintf("%10.2f",$self->charged + $pr_total) ];
-  push @buf,['',''];
+List reference of charged limits (exclusive).
 
-  #credits
-  foreach ( $self->cust_credited ) {
+=item open
 
-    #something more elaborate if $_->amount ne $_->cust_credit->credited ?
+flag, return open invoices only
 
-    my $reason = substr($_->cust_credit->reason,0,32);
-    $reason .= '...' if length($reason) < length($_->cust_credit->reason);
-    $reason = " ($reason) " if $reason;
-    push @buf,[
-      "Credit #". $_->crednum. " (". time2str("%x",$_->cust_credit->_date) .")".
-        $reason,
-      $money_char. sprintf("%10.2f",$_->amount)
-    ];
-  }
-  #foreach ( @cr_cust_credit ) {
-  #  push @buf,[
-  #    "Credit #". $_->crednum. " (" . time2str("%x",$_->_date) .")",
-  #    $money_char. sprintf("%10.2f",$_->credited)
-  #  ];
-  #}
+=item net
 
-  #get & print payments
-  foreach ( $self->cust_bill_pay ) {
+flag, return net invoices only
 
-    #something more elaborate if $_->amount ne ->cust_pay->paid ?
+=item days
+
+=item newest_percust
+
+=back
 
-    push @buf,[
-      "Payment received ". time2str("%x",$_->cust_pay->_date ),
-      $money_char. sprintf("%10.2f",$_->amount )
-    ];
+Note: validates all passed-in data; i.e. safe to use with unchecked CGI params.
+
+=cut
+
+sub search_sql_where {
+  my($class, $param) = @_;
+  if ( $DEBUG ) {
+    warn "$me search_sql_where called with params: \n".
+         join("\n", map { "  $_: ". $param->{$_} } keys %$param ). "\n";
   }
 
-  #balance due
-  push @buf,['','-----------'];
-  push @buf,['Balance Due', $money_char. 
-    sprintf("%10.2f", $balance_due ) ];
+  my @search = ();
 
-  #create the template
-  my $templatefile = 'invoice_template';
-  $templatefile .= "_$template" if $template;
-  my @invoice_template = $conf->config($templatefile)
-  or die "cannot load config file $templatefile";
-  $invoice_lines = 0;
-  my $wasfunc = 0;
-  foreach ( grep /invoice_lines\(\d+\)/, @invoice_template ) { #kludgy
-    /invoice_lines\((\d+)\)/;
-    $invoice_lines += $1;
-    $wasfunc=1;
+  #agentnum
+  if ( $param->{'agentnum'} =~ /^(\d+)$/ ) {
+    push @search, "cust_main.agentnum = $1";
   }
-  die "no invoice_lines() functions in template?" unless $wasfunc;
-  my $invoice_template = new Text::Template (
-    TYPE   => 'ARRAY',
-    SOURCE => [ map "$_\n", @invoice_template ],
-  ) or die "can't create new Text::Template object: $Text::Template::ERROR";
-  $invoice_template->compile()
-    or die "can't compile template: $Text::Template::ERROR";
-
-  #setup template variables
-  package FS::cust_bill::_template; #!
-  use vars qw( $invnum $date $page $total_pages @address $overdue @buf );
-
-  $invnum = $self->invnum;
-  $date = $self->_date;
-  $page = 1;
-
-  if ( $FS::cust_bill::invoice_lines ) {
-    $total_pages =
-      int( scalar(@FS::cust_bill::buf) / $FS::cust_bill::invoice_lines );
-    $total_pages++
-      if scalar(@FS::cust_bill::buf) % $FS::cust_bill::invoice_lines;
-  } else {
-    $total_pages = 1;
+
+  #_date
+  if ( $param->{_date} ) {
+    my($beginning, $ending) = @{$param->{_date}};
+
+    push @search, "cust_bill._date >= $beginning",
+                  "cust_bill._date <  $ending";
   }
 
-  #format address (variable for the template)
-  my $l = 0;
-  @address = ( '', '', '', '', '', '' );
-  package FS::cust_bill; #!
-  $FS::cust_bill::_template::address[$l++] =
-    $cust_main->payname.
-      ( ( $cust_main->payby eq 'BILL' ) && $cust_main->payinfo
-        ? " (P.O. #". $cust_main->payinfo. ")"
-        : ''
-      )
-  ;
-  $FS::cust_bill::_template::address[$l++] = $cust_main->company
-    if $cust_main->company;
-  $FS::cust_bill::_template::address[$l++] = $cust_main->address1;
-  $FS::cust_bill::_template::address[$l++] = $cust_main->address2
-    if $cust_main->address2;
-  $FS::cust_bill::_template::address[$l++] =
-    $cust_main->city. ", ". $cust_main->state. "  ".  $cust_main->zip;
-  $FS::cust_bill::_template::address[$l++] = $cust_main->country
-    unless $cust_main->country eq 'US';
-
-	#  #overdue? (variable for the template)
-	#  $FS::cust_bill::_template::overdue = ( 
-	#    $balance_due > 0
-	#    && $today > $self->_date 
-	##    && $self->printed > 1
-	#    && $self->printed > 0
-	#  );
-
-  #and subroutine for the template
-
-  sub FS::cust_bill::_template::invoice_lines {
-    my $lines = shift or return @buf;
-    map { 
-      scalar(@buf) ? shift @buf : [ '', '' ];
-    }
-    ( 1 .. $lines );
+  #invnum
+  if ( $param->{'invnum_min'} =~ /^(\d+)$/ ) {
+    push @search, "cust_bill.invnum >= $1";
+  }
+  if ( $param->{'invnum_max'} =~ /^(\d+)$/ ) {
+    push @search, "cust_bill.invnum <= $1";
   }
 
+  #charged
+  if ( $param->{charged} ) {
+    my @charged = ref($param->{charged})
+                    ? @{ $param->{charged} }
+                    : ($param->{charged});
 
-  #and fill it in
-  $FS::cust_bill::_template::page = 1;
-  my $lines;
-  my @collect;
-  while (@buf) {
-    push @collect, split("\n",
-      $invoice_template->fill_in( PACKAGE => 'FS::cust_bill::_template' )
-    );
-    $FS::cust_bill::_template::page++;
+    push @search, map { s/^charged/cust_bill.charged/; $_; }
+                      @charged;
   }
 
-  map "$_\n", @collect;
+  my $owed_sql = FS::cust_bill->owed_sql;
 
-}
+  #owed
+  if ( $param->{owed} ) {
+    my @owed = ref($param->{owed})
+                 ? @{ $param->{owed} }
+                 : ($param->{owed});
+    push @search, map { s/^owed/$owed_sql/; $_; }
+                      @owed;
+  }
 
-=back
+  #open/net flags
+  push @search, "0 != $owed_sql"
+    if $param->{'open'};
+  push @search, '0 != '. FS::cust_bill->net_sql
+    if $param->{'net'};
 
-=head1 VERSION
+  #days
+  push @search, "cust_bill._date < ". (time-86400*$param->{'days'})
+    if $param->{'days'};
 
-$Id: cust_bill.pm,v 1.50 2002-10-15 09:54:24 ivan Exp $
+  #newest_percust
+  if ( $param->{'newest_percust'} ) {
 
-=head1 BUGS
+    #$distinct = 'DISTINCT ON ( cust_bill.custnum )';
+    #$orderby = 'ORDER BY cust_bill.custnum ASC, cust_bill._date DESC';
 
-The delete method.
+    my @newest_where = map { my $x = $_;
+                             $x =~ s/\bcust_bill\./newest_cust_bill./g;
+                             $x;
+                           }
+                           grep ! /^cust_main./, @search;
+    my $newest_where = scalar(@newest_where)
+                         ? ' AND '. join(' AND ', @newest_where)
+			 : '';
 
-print_text formatting (and some logic :/) is in source, but needs to be
-slurped in from a file.  Also number of lines ($=).
 
-missing print_ps for a nice postscript copy (maybe HylaFAX-cover-page-style
-or something similar so the look can be completely customized?)
+    push @search, "cust_bill._date = (
+      SELECT(MAX(newest_cust_bill._date)) FROM cust_bill AS newest_cust_bill
+        WHERE newest_cust_bill.custnum = cust_bill.custnum
+          $newest_where
+    )";
+
+  }
+
+  #agent virtualization
+  my $curuser = $FS::CurrentUser::CurrentUser;
+  if ( $curuser->username eq 'fs_queue'
+       && $param->{'CurrentUser'} =~ /^(\w+)$/ ) {
+    my $username = $1;
+    my $newuser = qsearchs('access_user', {
+      'username' => $username,
+      'disabled' => '',
+    } );
+    if ( $newuser ) {
+      $curuser = $newuser;
+    } else {
+      warn "$me WARNING: (fs_queue) can't find CurrentUser $username\n";
+    }
+  }
+  push @search, $curuser->agentnums_sql;
+
+  join(' AND ', @search );
+
+}
+
+=back
+
+=head1 BUGS
+
+The delete method.
 
 =head1 SEE ALSO