#=====================================================================
# LX-Office ERP
# Copyright (C) 2004
# Based on SQL-Ledger Version 2.1.9
# Web http://www.lx-office.org
#
#=====================================================================
# SQL-Ledger Accounting
# Copyright (C) 1998-2002
#
#  Author: Dieter Simader
#   Email: dsimader@sql-ledger.org
#     Web: http://www.sql-ledger.org
#
#  Contributors:
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#======================================================================
#
# Inventory invoicing module
#
#======================================================================

package IS;


sub invoice_details {
  $main::lxdebug->enter_sub();

  my ($self, $myconfig, $form, $locale) = @_;

  $form->{duedate} = $form->{invdate} unless ($form->{duedate});

  # connect to database
  my $dbh = $form->dbconnect($myconfig);

  my $query = qq|SELECT date '$form->{duedate}' - date '$form->{invdate}'
                 AS terms
		 FROM defaults|;
  my $sth = $dbh->prepare($query);
  $sth->execute || $form->dberror($query);

  ($form->{terms}) = $sth->fetchrow_array;
  $sth->finish;

  my $tax = 0;
  my $item;
  my $i;
  my @partsgroup = ();
  my $partsgroup;
  my %oid = ( 'Pg' => 'oid',
              'Oracle' => 'rowid' );
  
  # sort items by partsgroup
  for $i (1 .. $form->{rowcount}) {
    $partsgroup = "";
    if ($form->{"partsgroup_$i"} && $form->{groupitems}) {
      $form->format_string("partsgroup_$i");
      $partsgroup = $form->{"partsgroup_$i"};
    }
    push @partsgroup, [ $i, $partsgroup ];
  }
  
  my $sameitem = "";
  my @taxaccounts;
  my %taxaccounts;
  my %taxbase;
  my $taxrate;
  my $taxamount;
  my $taxbase;
  my $taxdiff;

  foreach $item (sort { $a->[1] cmp $b->[1] } @partsgroup) {
    $i = $item->[0];

    if ($item->[1] ne $sameitem) {
      push(@{ $form->{description} }, qq|$item->[1]|);
      $sameitem = $item->[1];

      map { push(@{ $form->{$_} }, "") } qw(runningnumber number serialnumber bin partnotes qty unit deliverydate sellprice listprice netprice discount linetotal);
    }
    
    $form->{"qty_$i"} = $form->parse_amount($myconfig, $form->{"qty_$i"});
    
    if ($form->{"qty_$i"} != 0) {

      # add number, description and qty to $form->{number}, ....
      push(@{ $form->{runningnumber} }, $i);
      push(@{ $form->{number} }, qq|$form->{"partnumber_$i"}|);
      push(@{ $form->{serialnumber} }, qq|$form->{"serialnumber_$i"}|);
      push(@{ $form->{bin} }, qq|$form->{"bin_$i"}|);
      push(@{ $form->{"partnotes"} }, qq|$form->{"partnotes_$i"}|);
      push(@{ $form->{description} }, qq|$form->{"description_$i"}|);
      push(@{ $form->{qty} }, $form->format_amount($myconfig, $form->{"qty_$i"}));
      push(@{ $form->{unit} }, qq|$form->{"unit_$i"}|);
      push(@{ $form->{deliverydate} }, qq|$form->{"deliverydate_$i"}|);
      
      push(@{ $form->{sellprice} }, $form->{"sellprice_$i"});
      
      if ($form->{lizenzen}) {
        if ($form->{"licensenumber_$i"}) {
          $query = qq|SELECT l.licensenumber, l.validuntil FROM license l WHERE l.id = $form->{"licensenumber_$i"}|;
          $sth = $dbh->prepare($query);
          $sth->execute || $form->dberror($query);
  
          ($licensenumber, $validuntil) = $sth->fetchrow_array;
          push(@{ $form->{licensenumber} }, $licensenumber);
          push(@{ $form->{validuntil} }, $locale->date($myconfig, $validuntil, 0));
          $licensenumber = "Lizenz: ".$licensenumber;
          $sth->finish;
          push(@{ $form->{licensenumber} }, $licensenumber);
        } else {
          push(@{ $form->{licensenumber} }, "");
          push(@{ $form->{validuntil} }, "");
        }
      }
      
      # listprice
      push(@{ $form->{listprice} }, $form->{"listprice_$i"});

      my $sellprice = $form->parse_amount($myconfig, $form->{"sellprice_$i"});
      my ($dec) = ($sellprice =~ /\.(\d+)/);
      $dec = length $dec;
      my $decimalplaces = ($dec > 2) ? $dec : 2;
      
      my $discount = $form->round_amount($sellprice * $form->parse_amount($myconfig, $form->{"discount_$i"}) / 100, $decimalplaces);
      
      # keep a netprice as well, (sellprice - discount)
      $form->{"netprice_$i"} = $sellprice - $discount;
      push(@{ $form->{netprice} }, ($form->{"netprice_$i"} != 0) ? $form->format_amount($myconfig, $form->{"netprice_$i"}, $decimalplaces) : " ");

      
      my $linetotal = $form->round_amount($form->{"qty_$i"} * $form->{"netprice_$i"}, 2);

      $discount = ($discount != 0) ? $form->format_amount($myconfig, $discount * -1, $decimalplaces) : " ";
      $linetotal = ($linetotal != 0) ? $linetotal : " ";
      
      push(@{ $form->{discount} }, $discount);

      $form->{total} += $linetotal;

      push(@{ $form->{linetotal} }, $form->format_amount($myconfig, $linetotal, 2));
      
      @taxaccounts = split / /, $form->{"taxaccounts_$i"};
      $taxrate = 0;
      $taxdiff = 0;
      
      map { $taxrate += $form->{"${_}_rate"} } @taxaccounts;

      if ($form->{taxincluded}) {
	# calculate tax
	$taxamount = $linetotal * $taxrate / (1 + $taxrate);
	$taxbase = $linetotal - $taxamount;
      } else {
        $taxamount = $linetotal * $taxrate;
	$taxbase = $linetotal;
      }

      if ($form->round_amount($taxrate,7) == 0) {
	if ($form->{taxincluded}) {
	  foreach $item (@taxaccounts) {
	    $taxamount = $form->round_amount($linetotal * $form->{"${item}_rate"} / (1 + abs($form->{"${item}_rate"})), 2);
	    
	    $taxaccounts{$item} += $taxamount;
	    $taxdiff += $taxamount;
	    
	    $taxbase{$item} += $taxbase;
	  }
	  $taxaccounts{$taxaccounts[0]} += $taxdiff;
	} else {
	  foreach $item (@taxaccounts) {
	    $taxaccounts{$item} += $linetotal * $form->{"${item}_rate"};
	    $taxbase{$item} += $taxbase;
	  }
	}
      } else {
	foreach $item (@taxaccounts) {
	  $taxaccounts{$item} += $taxamount * $form->{"${item}_rate"} / $taxrate;
	  $taxbase{$item} += $taxbase;
	}
      }
      

      if ($form->{"assembly_$i"}) {
	$sameitem = "";
	
        # get parts and push them onto the stack
	my $sortorder = "";
	if ($form->{groupitems}) {
	  $sortorder = qq|ORDER BY pg.partsgroup, a.$oid{$myconfig->{dbdriver}}|;
	} else {
	  $sortorder = qq|ORDER BY a.$oid{$myconfig->{dbdriver}}|;
	}
	
	$query = qq|SELECT p.partnumber, p.description, p.unit, a.qty,
	            pg.partsgroup
	            FROM assembly a
		    JOIN parts p ON (a.parts_id = p.id)
		    LEFT JOIN partsgroup pg ON (p.partsgroup_id = pg.id)
		    WHERE a.bom = '1'
		    AND a.id = '$form->{"id_$i"}'
		    $sortorder|;
        $sth = $dbh->prepare($query);
        $sth->execute || $form->dberror($query);

	while (my $ref = $sth->fetchrow_hashref(NAME_lc)) {
	  if ($form->{groupitems} && $ref->{partsgroup} ne $sameitem) {
	    map { push(@{ $form->{$_} }, "") } qw(runningnumber number serialnumber unit qty bin sellprice listprice netprice discount linetotal);
	    $sameitem = ($ref->{partsgroup}) ? $ref->{partsgroup} : "--";
	    push(@{ $form->{description} }, $sameitem);
	  }
	    
	  map { $form->{"a_$_"} = $ref->{$_} } qw(partnumber description);
	  $form->format_string("a_partnumber", "a_description");
	  
	  push(@{ $form->{description} }, $form->format_amount($myconfig, $ref->{qty} * $form->{"qty_$i"}) . qq| -- $form->{"a_partnumber"}, $form->{"a_description"}|);
          map { push(@{ $form->{$_} }, "") } qw(number unit qty runningnumber serialnumber bin sellprice listprice netprice discount linetotal);
	  
	}
	$sth->finish;
      }
    }
  }


  foreach my $item (sort keys %taxaccounts) {
    if ($form->round_amount($taxaccounts{$item}, 2) != 0) {
      push(@{ $form->{taxbase} }, $form->format_amount($myconfig, $taxbase{$item}, 2));

      $tax += $taxamount = $form->round_amount($taxaccounts{$item}, 2);

      push(@{ $form->{tax} }, $form->format_amount($myconfig, $taxamount));
      push(@{ $form->{taxdescription} }, $form->{"${item}_description"});
      push(@{ $form->{taxrate} }, $form->format_amount($myconfig, $form->{"${item}_rate"} * 100));
      push(@{ $form->{taxnumber} }, $form->{"${item}_taxnumber"});
    }
  }
    

  for my $i (1 .. $form->{paidaccounts}) {
    if ($form->{"paid_$i"}) {
      push(@{ $form->{payment} }, $form->{"paid_$i"});
      my ($accno, $description) = split /--/, $form->{"AR_paid_$i"};
      push(@{ $form->{paymentaccount} }, $description); 
      push(@{ $form->{paymentdate} }, $form->{"datepaid_$i"});
      push(@{ $form->{paymentsource} }, $form->{"source_$i"});

      $form->{paid} += $form->parse_amount($myconfig, $form->{"paid_$i"});
    }
  }
  
  $form->{subtotal} = $form->format_amount($myconfig, $form->{total}, 2);
  $form->{invtotal} = ($form->{taxincluded}) ? $form->{total} : $form->{total} + $tax;
  $form->{total} = $form->format_amount($myconfig, $form->{invtotal} - $form->{paid}, 2);
  $form->{invtotal} = $form->format_amount($myconfig, $form->{invtotal}, 2);

  $form->{paid} = $form->format_amount($myconfig, $form->{paid}, 2);


  # myconfig variables
  map { $form->{$_} = $myconfig->{$_} } (qw(company address tel fax signature businessnumber));
  $form->{username} = $myconfig->{name};

  $dbh->disconnect;
  
  $main::lxdebug->leave_sub();
}


sub project_description {
  $main::lxdebug->enter_sub();

  my ($self, $dbh, $id) = @_;

  my $query = qq|SELECT p.description
                 FROM project p
		 WHERE p.id = $id|;
  my $sth = $dbh->prepare($query);
  $sth->execute || $form->dberror($query);

  ($_) = $sth->fetchrow_array;

  $sth->finish;

  $main::lxdebug->leave_sub();

  return $_;
}


sub customer_details {
  $main::lxdebug->enter_sub();

  my ($self, $myconfig, $form) = @_;
  
  # connect to database
  my $dbh = $form->dbconnect($myconfig);
  
  # get contact id, set it if nessessary
  ($null, $form->{cp_id}) = split /--/, $form->{contact};
  
  $contact = "";
  if ($form->{cp_id}) {
    $contact = "and cp.cp_id = $form->{cp_id}";
  }
    
  $taxincluded = $form->{taxincluded};
  
  # get rest for the customer
  my $query = qq|SELECT ct.*, cp.*, ct.notes as customernotes
                 FROM customer ct
                 LEFT JOIN contacts cp on ct.id = cp.cp_cv_id
		 WHERE ct.id = $form->{customer_id} $contact order by cp.cp_id limit 1|;
  my $sth = $dbh->prepare($query);
  $sth->execute || $form->dberror($query);

  $ref = $sth->fetchrow_hashref(NAME_lc);
  map { $form->{$_} = $ref->{$_} } keys %$ref;
  
  $form->{taxincluded} = $taxincluded;
  
  $sth->finish;
  $dbh->disconnect;

  $main::lxdebug->leave_sub();
}


sub post_invoice {
  $main::lxdebug->enter_sub();

  my ($self, $myconfig, $form) = @_;

  # connect to database, turn off autocommit
  my $dbh = $form->dbconnect_noauto($myconfig);

  my ($query, $sth, $null, $project_id, $deliverydate);
  my $exchangerate = 0;

  ($null, $form->{employee_id}) = split /--/, $form->{employee};
  unless ($form->{employee_id}) {
    $form->get_employee($dbh);
  }
  
  ($null, $form->{contact_id}) = split /--/, $form->{contact};
  $form->{contact_id} *= 1;
        
  ($null, $form->{department_id}) = split(/--/, $form->{department});
  $form->{department_id} *= 1;
 
  if ($form->{id}) {

    &reverse_invoice($dbh, $form);

  } else {
    my $uid = rand().time;

    $uid .= $form->{login};

    $uid = substr($uid,2,75);

    $query = qq|INSERT INTO ar (invnumber, employee_id)
                VALUES ('$uid', $form->{employee_id})|;
    $dbh->do($query) || $form->dberror($query);

    $query = qq|SELECT a.id FROM ar a
                WHERE a.invnumber = '$uid'|;
    $sth = $dbh->prepare($query);
    $sth->execute || $form->dberror($query);

    ($form->{id}) = $sth->fetchrow_array;
    $sth->finish;
  }


  map { $form->{$_} =~ s/\'/\'\'/g } (qw(invnumber shippingpoint shipvia notes intnotes message));

  my ($netamount, $invoicediff) = (0, 0);
  my ($amount, $linetotal, $lastincomeaccno);

  if ($form->{currency} eq $form->{defaultcurrency}) {
    $form->{exchangerate} = 1;
  } else {
    $exchangerate = $form->check_exchangerate($myconfig, $form->{currency}, $form->{transdate}, 'buy');
  }

  $form->{exchangerate} = ($exchangerate) ? $exchangerate : $form->parse_amount($myconfig, $form->{exchangerate});
  
  $form->{expense_inventory} = "";
  
  foreach my $i (1 .. $form->{rowcount}) {
    $form->{"qty_$i"} = $form->parse_amount($myconfig, $form->{"qty_$i"});
    
    if ($form->{"qty_$i"} != 0) {

      map { $form->{"${_}_$i"} =~ s/\'/\'\'/g } (qw(partnumber description unit));
      
      # undo discount formatting
      $form->{"discount_$i"} = $form->parse_amount($myconfig, $form->{"discount_$i"}) / 100;

      my ($allocated, $taxrate) = (0, 0);
      my $taxamount;
      
      # keep entered selling price
      my $fxsellprice = $form->parse_amount($myconfig, $form->{"sellprice_$i"});
      
      my ($dec) = ($fxsellprice =~ /\.(\d+)/);
      $dec = length $dec;
      my $decimalplaces = ($dec > 2) ? $dec : 2;
      
      # deduct discount
      my $discount = $form->round_amount($fxsellprice * $form->{"discount_$i"}, $decimalplaces);
      $form->{"sellprice_$i"} = $fxsellprice - $discount;
      
      # add tax rates
      map { $taxrate += $form->{"${_}_rate"} } split / /, $form->{"taxaccounts_$i"};

      # round linetotal to 2 decimal places
      $linetotal = $form->round_amount($form->{"sellprice_$i"} * $form->{"qty_$i"}, 2);
      
      if ($form->{taxincluded}) {
	$taxamount = $linetotal * ($taxrate / (1 + $taxrate));
	$form->{"sellprice_$i"} = $form->{"sellprice_$i"} * (1 / (1 + $taxrate));
      } else {
	$taxamount = $linetotal * $taxrate;
      }

      $netamount += $linetotal;
      
      if ($taxamount != 0) {
	map { $form->{amount}{$form->{id}}{$_} += $taxamount * $form->{"${_}_rate"} / $taxrate } split / /, $form->{"taxaccounts_$i"};
      }
    
    
      # add amount to income, $form->{amount}{trans_id}{accno}
      $amount = $form->{"sellprice_$i"} * $form->{"qty_$i"} * $form->{exchangerate};
      
      $linetotal = $form->round_amount($form->{"sellprice_$i"} * $form->{"qty_$i"}, 2) * $form->{exchangerate};
      $linetotal = $form->round_amount($linetotal, 2);
      
      # this is the difference from the inventory
      $invoicediff += ($amount - $linetotal);
		      
      $form->{amount}{$form->{id}}{$form->{"income_accno_$i"}} += $linetotal;
      
      $lastincomeaccno = $form->{"income_accno_$i"};
      

      # adjust and round sellprice
      $form->{"sellprice_$i"} = $form->round_amount($form->{"sellprice_$i"} * $form->{exchangerate}, $decimalplaces);
      
      if ($form->{"inventory_accno_$i"} || $form->{"assembly_$i"}) {
        # adjust parts onhand quantity

        if ($form->{"assembly_$i"}) {
	  # do not update if assembly consists of all services
	  $query = qq|SELECT sum(p.inventory_accno_id)
		      FROM parts p
		      JOIN assembly a ON (a.parts_id = p.id)
		      WHERE a.id = $form->{"id_$i"}|;
	  $sth = $dbh->prepare($query);
	  $sth->execute || $form->dberror($query);

	  if ($sth->fetchrow_array) {
	    $form->update_balance($dbh,
				  "parts",
				  "onhand",
				  qq|id = $form->{"id_$i"}|,
				  $form->{"qty_$i"} * -1) unless $form->{shipped};
	  }
	  $sth->finish;
	   
	  # record assembly item as allocated
	  &process_assembly($dbh, $form, $form->{"id_$i"}, $form->{"qty_$i"});
	} else {
	  $form->update_balance($dbh,
				"parts",
				"onhand",
				qq|id = $form->{"id_$i"}|,
				$form->{"qty_$i"} * -1) unless $form->{shipped};
	  
	  $allocated = &cogs($dbh, $form, $form->{"id_$i"}, $form->{"qty_$i"});
	}
      }

      $project_id = 'NULL';
      if ($form->{"projectnumber_$i"}) {
	$project_id = $form->{"projectnumber_$i"};
      }
      $deliverydate = ($form->{"deliverydate_$i"}) ? qq|'$form->{"deliverydate_$i"}'| : "NULL";

      # save detail record in invoice table
      $query = qq|INSERT INTO invoice (trans_id, parts_id, description, qty,
                  sellprice, fxsellprice, discount, allocated, assemblyitem,
		  unit, deliverydate, project_id, serialnumber)
		  VALUES ($form->{id}, $form->{"id_$i"},
		  '$form->{"description_$i"}', $form->{"qty_$i"},
		  $form->{"sellprice_$i"}, $fxsellprice,
		  $form->{"discount_$i"}, $allocated, 'f',
		  '$form->{"unit_$i"}', $deliverydate, (SELECT id from project where projectnumber = '$project_id'),
		  '$form->{"serialnumber_$i"}')|;
      $dbh->do($query) || $form->dberror($query);
      
      if ($form->{lizenzen}) {
        if ($form->{"licensenumber_$i"}) {
          $query = qq|SELECT i.id FROM invoice i WHERE i.trans_id=$form->{id} ORDER BY i.oid DESC LIMIT 1|;
          $sth = $dbh->prepare($query);
          $sth->execute || $form->dberror($query);
  
          ($invoice_row_id) = $sth->fetchrow_array;
          $sth->finish;
          
          $query = qq|INSERT INTO licenseinvoice (trans_id, license_id) VALUES ($invoice_row_id, $form->{"licensenumber_$i"})|;
          $dbh->do($query) || $form->dberror($query);
        }
      }

    }
  }


  $form->{datepaid} = $form->{invdate};
  
  # total payments, don't move we need it here
  for my $i (1 .. $form->{paidaccounts}) {
    $form->{"paid_$i"} = $form->parse_amount($myconfig, $form->{"paid_$i"});
    $form->{paid} += $form->{"paid_$i"};
    $form->{datepaid} = $form->{"datepaid_$i"} if ($form->{"datepaid_$i"});
  }
  
  my ($tax, $diff) = (0, 0);
  
  $netamount = $form->round_amount($netamount, 2);
  
  # figure out rounding errors for total amount vs netamount + taxes
  if ($form->{taxincluded}) {
    
    $amount = $form->round_amount($netamount * $form->{exchangerate}, 2);
    $diff += $amount - $netamount * $form->{exchangerate};
    $netamount = $amount;
    
    foreach my $item (split / /, $form->{taxaccounts}) {
      $amount = $form->{amount}{$form->{id}}{$item} * $form->{exchangerate};
      $form->{amount}{$form->{id}}{$item} = $form->round_amount($amount, 2);
      $tax += $form->{amount}{$form->{id}}{$item};
      $netamount -= $form->{amount}{$form->{id}}{$item};
    }

    $invoicediff += $diff;
    ######## this only applies to tax included
    if ($lastincomeaccno) {
      $form->{amount}{$form->{id}}{$lastincomeaccno} += $invoicediff;
    }

  } else {
    $amount = $form->round_amount($netamount * $form->{exchangerate}, 2);
    $diff = $amount - $netamount * $form->{exchangerate};
    $netamount = $amount;
    foreach my $item (split / /, $form->{taxaccounts}) {
      $form->{amount}{$form->{id}}{$item} = $form->round_amount($form->{amount}{$form->{id}}{$item}, 2);
      $amount = $form->round_amount($form->{amount}{$form->{id}}{$item} * $form->{exchangerate}, 2);
      $diff += $amount - $form->{amount}{$form->{id}}{$item} * $form->{exchangerate};
      $form->{amount}{$form->{id}}{$item} = $form->round_amount($amount, 2);
      $tax += $form->{amount}{$form->{id}}{$item};
    }
  }

  
  $form->{amount}{$form->{id}}{$form->{AR}} = $netamount + $tax;
  $form->{paid} = $form->round_amount($form->{paid} * $form->{exchangerate} + $diff, 2);
  
  # reverse AR
  $form->{amount}{$form->{id}}{$form->{AR}} *= -1;


  # update exchangerate
  if (($form->{currency} ne $form->{defaultcurrency}) && !$exchangerate) {
    $form->update_exchangerate($dbh, $form->{currency}, $form->{invdate}, $form->{exchangerate}, 0);
  }
    
  foreach my $trans_id (keys %{$form->{amount}}) {
    foreach my $accno (keys %{ $form->{amount}{$trans_id} }) {
      next unless ($form->{expense_inventory}=~ /$accno/);
      if (($form->{amount}{$trans_id}{$accno} = $form->round_amount($form->{amount}{$trans_id}{$accno}, 2)) != 0) {
	$query = qq|INSERT INTO acc_trans (trans_id, chart_id, amount,
	            transdate, taxkey)
		    VALUES ($trans_id, (SELECT c.id FROM chart c
		                        WHERE c.accno = '$accno'),
		    $form->{amount}{$trans_id}{$accno}, '$form->{invdate}',
                    (SELECT taxkey_id  FROM chart WHERE accno = '$accno'))|;
	$dbh->do($query) || $form->dberror($query);
        $form->{amount}{$trans_id}{$accno} = 0;
      }
    }
    
    foreach my $accno (keys %{ $form->{amount}{$trans_id} }) {
      if (($form->{amount}{$trans_id}{$accno} = $form->round_amount($form->{amount}{$trans_id}{$accno}, 2)) != 0) {
	$query = qq|INSERT INTO acc_trans (trans_id, chart_id, amount,
	            transdate, taxkey)
		    VALUES ($trans_id, (SELECT id FROM chart
		                        WHERE accno = '$accno'),
		    $form->{amount}{$trans_id}{$accno}, '$form->{invdate}',
                    (SELECT taxkey_id  FROM chart WHERE accno = '$accno'))|;
	$dbh->do($query) || $form->dberror($query);
      }
    }
  }

  # deduct payment differences from diff
  for my $i (1 .. $form->{paidaccounts}) {
    if ($form->{"paid_$i"} != 0) {
      $amount = $form->round_amount($form->{"paid_$i"} * $form->{exchangerate}, 2);
      $diff -= $amount - $form->{"paid_$i"} * $form->{exchangerate};
    }
  }


  # force AR entry if 0
#  $form->{amount}{$form->{id}}{$form->{AR}} = 1 if ($form->{amount}{$form->{id}}{$form->{AR}} == 0);
  
  # record payments and offsetting AR
  for my $i (1 .. $form->{paidaccounts}) {
    
    if ($form->{"paid_$i"} != 0) {
      my ($accno) = split /--/, $form->{"AR_paid_$i"};
      $form->{"datepaid_$i"} = $form->{invdate} unless ($form->{"datepaid_$i"});
      $form->{datepaid} = $form->{"datepaid_$i"};
      
      $exchangerate = 0;
      
      if ($form->{currency} eq $form->{defaultcurrency}) {
	$form->{"exchangerate_$i"} = 1;
      } else {
	$exchangerate = $form->check_exchangerate($myconfig, $form->{currency}, $form->{"datepaid_$i"}, 'buy');
	
	$form->{"exchangerate_$i"} = ($exchangerate) ? $exchangerate : $form->parse_amount($myconfig, $form->{"exchangerate_$i"});
      }
      
 
      # record AR
      $amount = $form->round_amount($form->{"paid_$i"} * $form->{exchangerate} + $diff, 2);

      if ($form->{amount}{$form->{id}}{$form->{AR}} != 0) {
	$query = qq|INSERT INTO acc_trans (trans_id, chart_id, amount,
	            transdate)
		    VALUES ($form->{id}, (SELECT c.id FROM chart c
					WHERE c.accno = '$form->{AR}'),
		    $amount, '$form->{"datepaid_$i"}')|;
	$dbh->do($query) || $form->dberror($query);
      }

      # record payment
      $form->{"paid_$i"} *= -1;

      $query = qq|INSERT INTO acc_trans (trans_id, chart_id, amount, transdate,
                  source, memo)
                  VALUES ($form->{id}, (SELECT c.id FROM chart c
		                      WHERE c.accno = '$accno'),
		  $form->{"paid_$i"}, '$form->{"datepaid_$i"}',
		  '$form->{"source_$i"}', '$form->{"memo_$i"}')|;
      $dbh->do($query) || $form->dberror($query);

     
      # exchangerate difference
      $form->{fx}{$accno}{$form->{"datepaid_$i"}} += $form->{"paid_$i"} * ($form->{"exchangerate_$i"} - 1) + $diff;

      
      # gain/loss
      $amount = $form->{"paid_$i"} * $form->{exchangerate} - $form->{"paid_$i"} * $form->{"exchangerate_$i"};
      if ($amount > 0) {
	$form->{fx}{$form->{fxgain_accno}}{$form->{"datepaid_$i"}} += $amount;
      } else {
	$form->{fx}{$form->{fxloss_accno}}{$form->{"datepaid_$i"}} += $amount;
      }

      $diff = 0;

      # update exchange rate
      if (($form->{currency} ne $form->{defaultcurrency}) && !$exchangerate) {
	$form->update_exchangerate($dbh, $form->{currency}, $form->{"datepaid_$i"}, $form->{"exchangerate_$i"}, 0);
      }
    }
  }

  
  # record exchange rate differences and gains/losses
  foreach my $accno (keys %{$form->{fx}}) {
    foreach my $transdate (keys %{ $form->{fx}{$accno} }) {
      if (($form->{fx}{$accno}{$transdate} = $form->round_amount($form->{fx}{$accno}{$transdate}, 2)) != 0) {

	$query = qq|INSERT INTO acc_trans (trans_id, chart_id, amount,
	            transdate, cleared, fx_transaction)
		    VALUES ($form->{id},
		           (SELECT c.id FROM chart c
		            WHERE c.accno = '$accno'),
		    $form->{fx}{$accno}{$transdate}, '$transdate', '0', '1')|;
	$dbh->do($query) || $form->dberror($query);
      }
    }
  }
 

  $amount = $netamount + $tax;
  
  # set values which could be empty to 0
  $form->{terms} *= 1;
  $form->{taxincluded} *= 1;
  my $datepaid = ($form->{paid}) ? qq|'$form->{datepaid}'| : "NULL";
  my $duedate = ($form->{duedate}) ? qq|'$form->{duedate}'| : "NULL";

  # fill in subject if there is none
  $form->{subject} = qq|$form->{label} $form->{invnumber}| unless $form->{subject};
  # if there is a message stuff it into the intnotes
  my $cc = "Cc: $form->{cc}\\r\n" if $form->{cc};
  my $bcc = "Bcc: $form->{bcc}\\r\n" if $form->{bcc};
  my $now = scalar localtime;
  $form->{intnotes} .= qq|\r
\r| if $form->{intnotes};

  $form->{intnotes} .= qq|[email]\r
Date: $now
To: $form->{email}\r
$cc${bcc}Subject: $form->{subject}\r
\r
Message: $form->{message}\r| if $form->{message};

  # save AR record
  $query = qq|UPDATE ar set
              invnumber = '$form->{invnumber}',
	      ordnumber = '$form->{ordnumber}',
	      quonumber = '$form->{quonumber}',
	      cusordnumber = '$form->{cusordnumber}',
              transdate = '$form->{invdate}',
              customer_id = $form->{customer_id},
              amount = $amount,
              netamount = $netamount,
              paid = $form->{paid},
	      datepaid = $datepaid,
	      duedate = $duedate,
	      invoice = '1',
	      shippingpoint = '$form->{shippingpoint}',
	      shipvia = '$form->{shipvia}',
	      terms = $form->{terms},
	      notes = '$form->{notes}',
	      intnotes = '$form->{intnotes}',
	      taxincluded = '$form->{taxincluded}',
	      curr = '$form->{currency}',
	      department_id = $form->{department_id},
	      employee_id = $form->{employee_id},
              cp_id = $form->{contact_id}
              WHERE id = $form->{id}
             |;
  $dbh->do($query) || $form->dberror($query);
  
  $form->{pago_total} = $amount;
  # add shipto
  $form->{name} = $form->{customer};
  $form->{name} =~ s/--$form->{customer_id}//;
  $form->add_shipto($dbh, $form->{id});

  # save printed, emailed and queued
  $form->save_status($dbh);
  
 if ($form->{webdav}) {
  	&webdav_folder($myconfig, $form);
 }  

  my $rc = $dbh->commit;
  $dbh->disconnect;

  $main::lxdebug->leave_sub();

  return $rc;
}


sub process_assembly {
  $main::lxdebug->enter_sub();

  my ($dbh, $form, $id, $totalqty) = @_;

  my $query = qq|SELECT a.parts_id, a.qty, p.assembly,
                 p.partnumber, p.description, p.unit,
                 p.inventory_accno_id, p.income_accno_id,
		 p.expense_accno_id
                 FROM assembly a
		 JOIN parts p ON (a.parts_id = p.id)
		 WHERE a.id = $id|;
  my $sth = $dbh->prepare($query);
  $sth->execute || $form->dberror($query);

  
  while (my $ref = $sth->fetchrow_hashref(NAME_lc)) {

    my $allocated = 0;
    
    $ref->{inventory_accno_id} *= 1;
    $ref->{expense_accno_id} *= 1;

    map { $ref->{$_} =~ s/\'/\'\'/g } (qw(partnumber description unit));
    
    # multiply by number of assemblies
    $ref->{qty} *= $totalqty;
    
    if ($ref->{assembly}) {
      &process_assembly($dbh, $form, $ref->{parts_id}, $ref->{qty});
      next;
    } else {
      if ($ref->{inventory_accno_id}) {
	$allocated = &cogs($dbh, $form, $ref->{parts_id}, $ref->{qty});
      }
    }

    # save detail record for individual assembly item in invoice table
    $query = qq|INSERT INTO invoice (trans_id, description, parts_id, qty,
                sellprice, fxsellprice, allocated, assemblyitem, unit)
		VALUES
		($form->{id}, '$ref->{description}',
		$ref->{parts_id}, $ref->{qty}, 0, 0, $allocated, 't',
		'$ref->{unit}')|;
    $dbh->do($query) || $form->dberror($query);
	 
  }

  $sth->finish;

  $main::lxdebug->leave_sub();
}


sub cogs {
  $main::lxdebug->enter_sub();

  my ($dbh, $form, $id, $totalqty) = @_;

  my $query = qq|SELECT i.id, i.trans_id, i.qty, i.allocated, i.sellprice,
                   (SELECT c.accno FROM chart c
		    WHERE p.inventory_accno_id = c.id) AS inventory_accno,
		   (SELECT c.accno FROM chart c
		    WHERE p.expense_accno_id = c.id) AS expense_accno
		  FROM invoice i, parts p
		  WHERE i.parts_id = p.id
		  AND i.parts_id = $id
		  AND (i.qty + i.allocated) < 0
		  ORDER BY trans_id|;
  my $sth = $dbh->prepare($query);
  $sth->execute || $form->dberror($query);

  my $allocated = 0;
  my $qty;
  
  while (my $ref = $sth->fetchrow_hashref(NAME_lc)) {
    if (($qty = (($ref->{qty} * -1) - $ref->{allocated})) > $totalqty) {
      $qty = $totalqty;
    }
    
    $form->update_balance($dbh,
			  "invoice",
			  "allocated",
			  qq|id = $ref->{id}|,
			  $qty);

    # total expenses and inventory
    # sellprice is the cost of the item
    $linetotal = $form->round_amount($ref->{sellprice} * $qty, 2);
    
    
    if (!$eur) {
      # add to expense
      $form->{amount}{$form->{id}}{$ref->{expense_accno}} += -$linetotal;
      $form->{expense_inventory} .= " ".$ref->{expense_accno};
      # deduct inventory
      $form->{amount}{$form->{id}}{$ref->{inventory_accno}} -= -$linetotal;
      $form->{expense_inventory} .= " ".$ref->{inventory_accno};
    }
    
    # add allocated
    $allocated += -$qty;
    
    last if (($totalqty -= $qty) <= 0);
  }

  $sth->finish;

  $main::lxdebug->leave_sub();

  return $allocated;
}



sub reverse_invoice {
  $main::lxdebug->enter_sub();

  my ($dbh, $form) = @_;

  # reverse inventory items
  my $query = qq|SELECT i.id, i.parts_id, i.qty, i.assemblyitem, p.assembly,
		 p.inventory_accno_id
                 FROM invoice i
		 JOIN parts p ON (i.parts_id = p.id)
		 WHERE i.trans_id = $form->{id}|;
  my $sth = $dbh->prepare($query);
  $sth->execute || $form->dberror($query);

  while (my $ref = $sth->fetchrow_hashref(NAME_lc)) {

    if ($ref->{inventory_accno_id} || $ref->{assembly}) {

      # if the invoice item is not an assemblyitem adjust parts onhand
      if (!$ref->{assemblyitem}) {
	# adjust onhand in parts table
	$form->update_balance($dbh,
			      "parts",
			      "onhand",
			      qq|id = $ref->{parts_id}|,
			      $ref->{qty});
      }

      # loop if it is an assembly
      next if ($ref->{assembly});
      
      # de-allocated purchases
      $query = qq|SELECT i.id, i.trans_id, i.allocated
                  FROM invoice i
		  WHERE i.parts_id = $ref->{parts_id}
		  AND i.allocated > 0
		  ORDER BY i.trans_id DESC|;
      my $sth = $dbh->prepare($query);
      $sth->execute || $form->dberror($query);

      while (my $inhref = $sth->fetchrow_hashref(NAME_lc)) {
	$qty = $ref->{qty};
	if (($ref->{qty} - $inhref->{allocated}) > 0) {
	  $qty = $inhref->{allocated};
	}
	
	# update invoice
	$form->update_balance($dbh,
			      "invoice",
			      "allocated",
			      qq|id = $inhref->{id}|,
			      $qty * -1);

        last if (($ref->{qty} -= $qty) <= 0);
      }
      $sth->finish;
    }
  }
  
  $sth->finish;
  
  # delete acc_trans
  $query = qq|DELETE FROM acc_trans
              WHERE trans_id = $form->{id}|;
  $dbh->do($query) || $form->dberror($query);
 
  # delete invoice entries
  $query = qq|DELETE FROM invoice
              WHERE trans_id = $form->{id}|;
  $dbh->do($query) || $form->dberror($query);
  
  if ($form->{lizenzen}) {
    $query = qq|DELETE FROM licenseinvoice
              WHERE trans_id in (SELECT id FROM invoice WHERE trans_id = $form->{id})|;
    $dbh->do($query) || $form->dberror($query);
  }

  $query = qq|DELETE FROM shipto
              WHERE trans_id = $form->{id}|;
  $dbh->do($query) || $form->dberror($query);

  $main::lxdebug->leave_sub();
}



sub delete_invoice {
  $main::lxdebug->enter_sub();

  my ($self, $myconfig, $form, $spool) = @_;

  # connect to database
  my $dbh = $form->dbconnect_noauto($myconfig);

  &reverse_invoice($dbh, $form);
  
  # delete AR record
  my $query = qq|DELETE FROM ar
                 WHERE id = $form->{id}|;
  $dbh->do($query) || $form->dberror($query);

  # delete spool files
  $query = qq|SELECT s.spoolfile FROM status s
              WHERE s.trans_id = $form->{id}|;
  my $sth = $dbh->prepare($query);
  $sth->execute || $self->dberror($query);

  my $spoolfile;
  my @spoolfiles = ();
  
  while (($spoolfile) = $sth->fetchrow_array) {
    push @spoolfiles, $spoolfile;
  }
  $sth->finish;  

  # delete status entries
  $query = qq|DELETE FROM status
              WHERE trans_id = $form->{id}|;
  $dbh->do($query) || $form->dberror($query);

  my $rc = $dbh->commit;
  $dbh->disconnect;

  if ($rc) {
    foreach $spoolfile (@spoolfiles) {
      unlink "$spool/$spoolfile" if $spoolfile;
    }
  }
  
  $main::lxdebug->leave_sub();

  return $rc;
}



sub retrieve_invoice {
  $main::lxdebug->enter_sub();

  my ($self, $myconfig, $form) = @_;
  
  # connect to database
  my $dbh = $form->dbconnect_noauto($myconfig);

  my $query;

  if ($form->{id}) {
    # get default accounts and last invoice number
    $query = qq|SELECT (SELECT c.accno FROM chart c
                        WHERE d.inventory_accno_id = c.id) AS inventory_accno,
		       (SELECT c.accno FROM chart c
		        WHERE d.income_accno_id = c.id) AS income_accno,
		       (SELECT c.accno FROM chart c
		        WHERE d.expense_accno_id = c.id) AS expense_accno,
		       (SELECT c.accno FROM chart c
		        WHERE d.fxgain_accno_id = c.id) AS fxgain_accno,
		       (SELECT c.accno FROM chart c
		        WHERE d.fxloss_accno_id = c.id) AS fxloss_accno,
                d.curr AS currencies
		FROM defaults d|;
  } else {
    $query = qq|SELECT (SELECT c.accno FROM chart c
                        WHERE d.inventory_accno_id = c.id) AS inventory_accno,
		       (SELECT c.accno FROM chart c
		        WHERE d.income_accno_id = c.id) AS income_accno,
		       (SELECT c.accno FROM chart c
		        WHERE d.expense_accno_id = c.id) AS expense_accno,
		       (SELECT c.accno FROM chart c
		        WHERE d.fxgain_accno_id = c.id) AS fxgain_accno,
		       (SELECT c.accno FROM chart c
		        WHERE d.fxloss_accno_id = c.id) AS fxloss_accno,
                d.curr AS currencies, current_date AS invdate
                FROM defaults d|;
  }
  my $sth = $dbh->prepare($query);
  $sth->execute || $form->dberror($query);

  my $ref = $sth->fetchrow_hashref(NAME_lc);
  map { $form->{$_} = $ref->{$_} } keys %$ref;
  $sth->finish;


  if ($form->{id}) {

    # retrieve invoice
    $query = qq|SELECT a.invnumber, a.ordnumber, a.quonumber, a.cusordnumber,
                a.transdate AS invdate, a.paid,
                a.shippingpoint, a.shipvia, a.terms, a.notes, a.intnotes,
		a.duedate, a.taxincluded, a.curr AS currency,
		a.employee_id, e.name AS employee
		FROM ar a
	        LEFT JOIN employee e ON (e.id = a.employee_id)
		WHERE a.id = $form->{id}|;
    $sth = $dbh->prepare($query);
    $sth->execute || $form->dberror($query);

    $ref = $sth->fetchrow_hashref(NAME_lc);
    map { $form->{$_} = $ref->{$_} } keys %$ref;
    $sth->finish;

    $form->{exchangerate} = $form->get_exchangerate($dbh, $form->{currency}, $form->{invdate}, "buy");

    # get shipto
    $query = qq|SELECT s.* FROM shipto s
                WHERE s.trans_id = $form->{id}|;
    $sth = $dbh->prepare($query);
    $sth->execute || $form->dberror($query);

    $ref = $sth->fetchrow_hashref(NAME_lc);
    map { $form->{$_} = $ref->{$_} } keys %$ref;
    $sth->finish;

    # get printed, emailed
    $query = qq|SELECT s.printed, s.emailed, s.spoolfile, s.formname
                FROM status s
                WHERE s.trans_id = $form->{id}|;
    $sth = $dbh->prepare($query);
    $sth->execute || $form->dberror($query);

    while ($ref = $sth->fetchrow_hashref(NAME_lc)) {
      $form->{printed} .= "$ref->{formname} " if $ref->{printed};
      $form->{emailed} .= "$ref->{formname} " if $ref->{emailed};
      $form->{queued} .= "$ref->{formname} $ref->{spoolfile} " if $ref->{spoolfile};
    }
    $sth->finish;
    map { $form->{$_} =~ s/ +$//g } qw(printed emailed queued);


    # retrieve individual items
    $query = qq|SELECT (SELECT c.accno FROM chart c
                       WHERE p.inventory_accno_id = c.id)
                       AS inventory_accno,
		       (SELECT c.accno FROM chart c
		       WHERE p.income_accno_id = c.id)
		       AS income_accno,
		       (SELECT c.accno FROM chart c
		       WHERE p.expense_accno_id = c.id)
		       AS expense_accno,
                i.description, i.qty, i.fxsellprice AS sellprice,
		i.discount, i.parts_id AS id, i.unit, i.deliverydate,
		i.project_id, pr.projectnumber, i.serialnumber,
		p.partnumber, p.assembly, p.bin, p.notes AS partnotes, i.id AS invoice_pos,
		pg.partsgroup
		FROM invoice i
	        JOIN parts p ON (i.parts_id = p.id)
	        LEFT JOIN project pr ON (i.project_id = pr.id)
	        LEFT JOIN partsgroup pg ON (p.partsgroup_id = pg.id)
		WHERE i.trans_id = $form->{id}
		AND NOT i.assemblyitem = '1'
		ORDER BY i.id|;
    $sth = $dbh->prepare($query);
    $sth->execute || $form->dberror($query);
    while (my $ref = $sth->fetchrow_hashref(NAME_lc)) {
     
     #set expense_accno=inventory_accno if they are different => bilanz     
     $vendor_accno = ($ref->{expense_accno}!=$ref->{inventory_accno}) ? $ref->{inventory_accno} :$ref->{expense_accno};

     
     # get tax rates and description
     $accno_id = ($form->{vc} eq "customer") ? $ref->{income_accno} : $vendor_accno;
     $query = qq|SELECT c.accno, c.description, t.rate, t.taxnumber
	         FROM chart c, tax t
	         WHERE c.id=t.chart_id AND t.taxkey in (SELECT taxkey_id from chart where accno = '$accno_id')
	         ORDER BY accno|;
     $stw = $dbh->prepare($query);
     $stw->execute || $form->dberror($query);
     $ref->{taxaccounts} = "";
     while ($ptr = $stw->fetchrow_hashref(NAME_lc)) {
   #    if ($customertax{$ref->{accno}}) {
         $ref->{taxaccounts} .= "$ptr->{accno} ";
         if (!($form->{taxaccounts}=~/$ptr->{accno}/)) {
           $form->{"$ptr->{accno}_rate"} = $ptr->{rate};
           $form->{"$ptr->{accno}_description"} = $ptr->{description};
           $form->{"$ptr->{accno}_taxnumber"} = $ptr->{taxnumber};
           $form->{taxaccounts} .= "$ptr->{accno} ";
         }

     }
     
     if ($form->{lizenzen}) {
       $query = qq|SELECT l.licensenumber, l.id AS licenseid
	         FROM license l, licenseinvoice li
	         WHERE l.id = li.license_id AND li.trans_id = $ref->{invoice_pos}|;
       $stg = $dbh->prepare($query);
       $stg->execute || $form->dberror($query);
       ($licensenumber, $licenseid) = $stg->fetchrow_array();
       $ref->{lizenzen} ="<option value=\"$licenseid\">$licensenumber</option>";
       $stg->finish();
     }

     chop $ref->{taxaccounts};
     push @{ $form->{invoice_details} }, $ref;
     $stw->finish;
    }
    $sth->finish;
    
    if ($form->{webdav}) {
      &webdav_folder($myconfig, $form);
    }
  }
  
  my $rc = $dbh->commit;
  $dbh->disconnect;

  $main::lxdebug->leave_sub();

  return $rc;
}


sub get_customer {
  $main::lxdebug->enter_sub();

  my ($self, $myconfig, $form) = @_;

  # connect to database
  my $dbh = $form->dbconnect($myconfig);

  my $dateformat = $myconfig->{dateformat};
  $dateformat .= "yy" if $myconfig->{dateformat} !~ /^y/;

  my $duedate = ($form->{invdate}) ? "to_date('$form->{invdate}', '$dateformat')" : "current_date";
                      
  $form->{customer_id} *= 1;

  # get customer
  my $query = qq|SELECT c.name AS customer, c.discount, c.creditlimit, c.terms,
                 c.email, c.cc, c.bcc, c.language,
		 c.street, c.zipcode, c.city, c.country,
	         $duedate + c.terms AS duedate, c.notes AS intnotes,
		 b.discount AS tradediscount, b.description AS business
                 FROM customer c
		 LEFT JOIN business b ON (b.id = c.business_id)
	         WHERE c.id = $form->{customer_id}|;
  my $sth = $dbh->prepare($query);
  $sth->execute || $form->dberror($query);

  $ref = $sth->fetchrow_hashref(NAME_lc);

  map { $form->{$_} = $ref->{$_} } keys %$ref;
  $sth->finish;
  
  $form->{creditremaining} = $form->{creditlimit};
  $query = qq|SELECT SUM(a.amount - a.paid)
	      FROM ar a
	      WHERE a.customer_id = $form->{customer_id}|;
  $sth = $dbh->prepare($query);
  $sth->execute || $form->dberror($query);

  ($form->{creditremaining}) -= $sth->fetchrow_array;

  $sth->finish;
  
  $query = qq|SELECT o.amount,
                (SELECT e.buy FROM exchangerate e
		 WHERE e.curr = o.curr
		 AND e.transdate = o.transdate)
	      FROM oe o
	      WHERE o.customer_id = $form->{customer_id}
	      AND o.quotation = '0'
	      AND o.closed = '0'|;
  $sth = $dbh->prepare($query);
  $sth->execute || $form->dberror($query);

  while (my ($amount, $exch) = $sth->fetchrow_array) {
    $exch = 1 unless $exch;
    $form->{creditremaining} -= $amount * $exch;
  }
  $sth->finish;

  
  $form->get_contacts($dbh,$form->{customer_id});
  ($null, $form->{cp_id}) = split /--/, $form->{contact};
  

  # get contact if selected
  if ($form->{contact} ne "--" && $form->{contact} ne "") 
  {
    $form->get_contact($dbh,$form->{cp_id});
  }    
   
  # get shipto if we did not converted an order or invoice
  if (!$form->{shipto}) {
    map { delete $form->{$_} } qw(shiptoname shiptostreet shiptozipcode shiptocity shiptocountry shiptocontact shiptophone shiptofax shiptoemail);

    $query = qq|SELECT s.* FROM shipto s
                WHERE s.trans_id = $form->{customer_id}|;
    $sth = $dbh->prepare($query);
    $sth->execute || $form->dberror($query);

    $ref = $sth->fetchrow_hashref(NAME_lc);
    map { $form->{$_} = $ref->{$_} } keys %$ref;
    $sth->finish;
  }

  # get taxes we charge for this customer
  $query = qq|SELECT c.accno
              FROM chart c
	      JOIN customertax ct ON (ct.chart_id = c.id)
	      WHERE ct.customer_id = $form->{customer_id}|;
  $sth = $dbh->prepare($query);
  $sth->execute || $form->dberror($query);

  my $customertax = ();
  while ($ref = $sth->fetchrow_hashref(NAME_lc)) {
    $customertax{$ref->{accno}} = 1;
  }
  $sth->finish;

  # setup last accounts used for this customer
  if (!$form->{id} && $form->{type} !~ /_(order|quotation)/) {
    $query = qq|SELECT c.accno, c.description, c.link, c.category
                FROM chart c
		JOIN acc_trans ac ON (ac.chart_id = c.id)
		JOIN ar a ON (a.id = ac.trans_id)
		WHERE a.customer_id = $form->{customer_id}
		AND NOT (c.link LIKE '%_tax%' OR c.link LIKE '%_paid%')
		AND a.id IN (SELECT max(a2.id) FROM ar a2
		             WHERE a2.customer_id = $form->{customer_id})|;
    $sth = $dbh->prepare($query);
    $sth->execute || $form->dberror($query);

    my $i = 0;
    while ($ref = $sth->fetchrow_hashref(NAME_lc)) {
      if ($ref->{category} eq 'I') {
	$i++;
	$form->{"AR_amount_$i"} = "$ref->{accno}--$ref->{description}";
      }
      if ($ref->{category} eq 'A') {
	$form->{ARselected} = $form->{AR_1} = "$ref->{accno}--$ref->{description}";
      }
    }
    $sth->finish;
    $form->{rowcount} = $i if ($i && !$form->{type});
  }

  $dbh->disconnect;
  
  $main::lxdebug->leave_sub();
}



sub retrieve_item {
  $main::lxdebug->enter_sub();

  my ($self, $myconfig, $form) = @_;

  my $i = $form->{rowcount};

  my $where = "NOT p.obsolete = '1'";

  if ($form->{"partnumber_$i"}) {
    my $partnumber = $form->like(lc $form->{"partnumber_$i"});
    $where .= " AND lower(p.partnumber) LIKE '$partnumber'";
  }
  if ($form->{"description_$i"}) {
    my $description = $form->like(lc $form->{"description_$i"});
    $where .= " AND lower(p.description) LIKE '$description'";
  }

  if ($form->{"partsgroup_$i"}) {
    my $partsgroup = $form->like(lc $form->{"partsgroup_$i"});
    $where .= " AND lower(pg.partsgroup) LIKE '$partsgroup'";
  }

  if ($form->{"description_$i"}) {
    $where .= " ORDER BY p.description";
  } else {
    $where .= " ORDER BY p.partnumber";
  }

  # connect to database
  my $dbh = $form->dbconnect($myconfig);

  my $query = qq|SELECT p.id, p.partnumber, p.description, p.sellprice,
                        p.listprice,
                        c1.accno AS inventory_accno,
			c2.accno AS income_accno,
			c3.accno AS expense_accno,
		 p.unit, p.assembly, p.bin, p.onhand, p.notes AS partnotes,
		 pg.partsgroup
                 FROM parts p
		 LEFT JOIN chart c1 ON (p.inventory_accno_id = c1.id)
		 LEFT JOIN chart c2 ON (p.income_accno_id = c2.id)
		 LEFT JOIN chart c3 ON (p.expense_accno_id = c3.id)
		 LEFT JOIN partsgroup pg ON (pg.id = p.partsgroup_id)
	         WHERE $where|;
  my $sth = $dbh->prepare($query);
  $sth->execute || $form->dberror($query);

  while (my $ref = $sth->fetchrow_hashref(NAME_lc)) {
  
  #set expense_accno=inventory_accno if they are different => bilanz     
  $vendor_accno = ($ref->{expense_accno}!=$ref->{inventory_accno}) ? $ref->{inventory_accno} :$ref->{expense_accno};
  
  
  # get tax rates and description
  $accno_id = ($form->{vc} eq "customer") ? $ref->{income_accno} : $vendor_accno;
  $query = qq|SELECT c.accno, c.description, t.rate, t.taxnumber
	      FROM chart c, tax t
	      WHERE c.id=t.chart_id AND t.taxkey in (SELECT c2.taxkey_id from chart c2 where c2.accno = '$accno_id')
	      ORDER BY c.accno|;
  $stw = $dbh->prepare($query);
  $stw->execute || $form->dberror($query);

  $ref->{taxaccounts} = "";
  while ($ptr = $stw->fetchrow_hashref(NAME_lc)) {
#    if ($customertax{$ref->{accno}}) {
      $ref->{taxaccounts} .= "$ptr->{accno} ";
      if (!($form->{taxaccounts}=~/$ptr->{accno}/)) {
        $form->{"$ptr->{accno}_rate"} = $ptr->{rate};
        $form->{"$ptr->{accno}_description"} = $ptr->{description};
        $form->{"$ptr->{accno}_taxnumber"} = $ptr->{taxnumber};
        $form->{taxaccounts} .= "$ptr->{accno} ";
      }

 }

    $stw->finish;
    chop $ref->{taxaccounts};
  
    push @{ $form->{item_list} }, $ref;
    
    if ($form->{lizenzen}) {
        if ($ref->{inventory_accno} > 0) {
          $query = qq| SELECT l.* FROM license l WHERE l.parts_id = $ref->{id} AND NOT l.id IN (SELECT li.license_id FROM licenseinvoice li)|;
          $stw = $dbh->prepare($query);
          $stw->execute || $form->dberror($query);
          while ($ptr = $stw->fetchrow_hashref(NAME_lc)) {
                  push @{ $form->{LIZENZEN}{$ref->{id}} }, $ptr;
          }
          $stw->finish;
        }
    }
	

  }
  $sth->finish;
  $dbh->disconnect;
  
  $main::lxdebug->leave_sub();
}

sub webdav_folder {
  $main::lxdebug->enter_sub();

  my ($myconfig, $form) = @_;
  

  SWITCH: {
  	$path = "webdav/rechnungen/".$form->{invnumber}, last SWITCH if ($form->{vc} eq "customer");
	$path = "webdav/einkaufsrechnungen/".$form->{invnumber}, last SWITCH if ($form->{vc} eq "vendor"); 
  }


  if (! -d $path) {
  	mkdir ($path, 0770) or die "can't make directory $!\n";
  } else {
  	if ($form->{id}) {
		@files = <$path/*>;
		foreach $file (@files) {
			$file =~ /\/([^\/]*)$/;
			$fname = $1;
			$ENV{'SCRIPT_NAME'} =~ /\/([^\/]*)\//;
			$lxerp = $1;
			$link = "http://".$ENV{'SERVER_NAME'}."/".$lxerp."/".$file;
			$form->{WEBDAV}{$fname} = $link; 
		}
	}
  }
  
  
  $main::lxdebug->leave_sub();
} 

1;