=head1 NAME

Form

=head1 SYNOPSIS

This module provides general legacy support functions and the central object

=head1 STATUS

Deprecated

=head1 COPYRIGHT

 #====================================================================
 # LedgerSMB
 # Small Medium Business Accounting software
 # http://www.ledgersmb.org/
 #
 # Copyright (C) 2006
 # This work contains copyrighted information from a number of sources
 # all used with permission.
 #
 # This file contains source code included with or based on SQL-Ledger
 # which is Copyright Dieter Simader and DWS Systems Inc. 2000-2005
 # and licensed under the GNU General Public License version 2 or, at
 # your option, any later version.  For a full list including contact
 # information of contributors, maintainers, and copyright holders,
 # see the CONTRIBUTORS file.
 #
 # Original Copyright Notice from SQL-Ledger 2.6.17 (before the fork):
 # Copyright (C) 2000
 #
 #  Author: DWS Systems Inc.
 #     Web: http://www.sql-ledger.org
 #
 # Contributors: Thomas Bayen <bayen@gmx.de>
 #               Antti Kaihola <akaihola@siba.fi>
 #               Moritz Bunkus (tex)
 #               Jim Rawlings <jim@your-dba.com> (DB2)
 #====================================================================
 #
 # This file has undergone whitespace cleanup.
 #
 #====================================================================
 #
 # main package
 #
 #====================================================================

=head1 METHODS

=over

=cut

#inline documentation

use Math::BigFloat lib => 'GMP';
use LedgerSMB::Sysconfig;
use List::Util qw(first);
use LedgerSMB::Mailer;
use Time::Local;
use Cwd;
use File::Copy;

use charnames ':full';
use open ':utf8';

package Form;

sub new {

    my $type = shift;

    my $argstr = shift;

    read( STDIN, $_, $ENV{CONTENT_LENGTH} );

    if ($argstr) {
        $_ = $argstr;
    }
    elsif ( $ENV{QUERY_STRING} ) {
        $_ = $ENV{QUERY_STRING};
    }

    elsif ( $ARGV[0] ) {
        $_ = $ARGV[0];
    }

    my $self = {};
    %$self = split /[&=]/;
    for ( keys %$self ) { $self->{$_} = unescape( "", $self->{$_} ) }

    if ( substr( $self->{action}, 0, 1 ) !~ /( |\.)/ ) {
        $self->{action} = lc $self->{action};
        $self->{action} =~ s/( |-|,|\#|\/|\.$)/_/g;
        $self->{nextsub} = lc $self->{nextsub};
        $self->{nextsub} =~ s/( |-|,|\#|\/|\.$)/_/g;
    }
    $self->{login} =~ s/[^a-zA-Z0-9._+\@'-]//g;

    $self->{menubar} = 1 if $self->{path} =~ /lynx/i;

    #menubar will be deprecated, replaced with below
    $self->{lynx} = 1 if $self->{path} =~ /lynx/i;

    $self->{version}   = "SVN Trunk";
    $self->{dbversion} = "1.2.0";

    bless $self, $type;

    if ( $self->{path} ne 'bin/lynx' ) { $self->{path} = 'bin/mozilla'; }

    if ( ( $self->{script} )
        and not List::Util::first { $_ eq $self->{script} }
        @{LedgerSMB::Sysconfig::scripts} )
    {
        $self->error( 'Access Denied', __line__, __file__ );
    }

    if ( ( $self->{action} =~ /(:|')/ ) || ( $self->{nextsub} =~ /(:|')/ ) ) {
        $self->error( "Access Denied", __line__, __file__ );
    }

    for ( keys %$self ) { $self->{$_} =~ s/\N{NULL}//g }
    
    if ( ($self->{action} eq 'redirect') || ($self->{nextsub} eq 'redirect') ) {
        $self->error( "Access Denied", __line__, __file__ );
    }
    
    $self;
}

=item $form->debug([$file]);

Outputs the sorted contents of $form.  If a filename is specified, log to it,
otherwise output to STDOUT.

=cut

sub debug {

    my ( $self, $file ) = @_;

    if ($file) {
        open( FH, '>', "$file" ) or die $!;
        for ( sort keys %$self ) { print FH "$_ = $self->{$_}\n" }
        close(FH);
    }
    else {
        print "\n";
        for ( sort keys %$self ) { print "$_ = $self->{$_}\n" }
    }

}

sub encode_all {

    # TODO;
}

sub decode_all {

    # TODO
}

=item $form->escape($str[, $beenthere]);

Returns the URI-encoded $str.  $beenthere is a boolean that when true forces a
single encoding run.  When false, it escapes the string twice if it detects
that it is running on a version of Apache 2.0 earlier than 2.0.44.

=cut

sub escape {
    my ( $self, $str, $beenthere ) = @_;

    # for Apache 2 we escape strings twice
    if ( ( $ENV{SERVER_SIGNATURE} =~ /Apache\/2\.(\d+)\.(\d+)/ )
        && !$beenthere )
    {
        $str = $self->escape( $str, 1 ) if $1 == 0 && $2 < 44;
    }

    utf8::encode($str);
    $str =~ s/([^a-zA-Z0-9_.-])/sprintf("%%%02x", ord($1))/ge;
    $str;

}

=item $form->unescape($str);

Returns the unencoded form of the URI-encoded $str.

=cut

sub unescape {
    my ( $self, $str ) = @_;

    $str =~ tr/+/ /;
    $str =~ s/\\$//;

    utf8::encode($str) if utf8::is_utf8($str);
    $str =~ s/%([0-9a-fA-Z]{2})/pack("c",hex($1))/eg;
    utf8::decode($str);
    $str =~ s/\r?\n/\n/g;

    $str;

}

=item $form->quote($str);

Replaces all double quotes in $str with '&quot;'.  Does nothing if $str is a
reference.

=cut

sub quote {
    my ( $self, $str ) = @_;

    if ( $str && !ref($str) ) {
        $str =~ s/"/&quot;/g;
    }

    $str;

}

=item $form->unquote($str);

Replaces all '&quot;' in $str with double quotes.  Does nothing if $str is a
reference.

=cut

sub unquote {
    my ( $self, $str ) = @_;

    if ( $str && !ref($str) ) {
        $str =~ s/&quot;/"/g;
    }

    $str;

}

=item $form->hide_form([...]);

Outputs hidden HTML form fields to STDOUT.  If values are passed into this
function, only those $form values are output.  If no values are passed in, all
$form values are output as well as deleting $form->{header}.  Values from the
$form object are run through $form->quote, whereas keys/names are not.

Sample output:

 <input type="hidden" name="login" value="testuser" />

=cut

sub hide_form {
    my $self = shift;

    if (@_) {

        for (@_) {
            print qq|<input type="hidden" name="$_" value="|
              . $self->quote( $self->{$_} )
              . qq|" />\n|;
        }

    }
    else {
        delete $self->{header};

        for ( sort keys %$self ) {
            print qq|<input type="hidden" name="$_" value="|
              . $self->quote( $self->{$_} )
              . qq|" />\n|;
        }
    }
}


=item $form->error($msg);

Output an error message, $msg.  If a CGI environment is detected, this outputs
an HTTP and HTML header section if required, and displays the message after
running it through $form->format_string.  If it is not a CGI environment and
$ENV{error_function} is set, call the specified function with $msg as the sole
argument.  Otherwise, this function simply dies with $msg.

This function does not return.  Execution is terminated at the end of the
appropriate path.

=cut

sub error {

    my ( $self, $msg ) = @_;

    if ( $ENV{GATEWAY_INTERFACE} ) {

        $self->{msg}    = $msg;
        $self->{format} = "html";
        $self->format_string('msg');

        delete $self->{pre};

        if ( !$self->{header} ) {
            $self->header;
        }

        print
          qq|<body><h2 class="error">Error!</h2> <p><b>$self->{msg}</b></body>|;

        exit;

    }
    else {

        if ( $ENV{error_function} ) {
            &{ $ENV{error_function} }($msg);
        }
        die "Error: $msg\n";
    }
}

=item $form->info($msg);

Output an informational message, $msg.  If a CGI environment is detected, this
outputs an HTTP and HTML header section if required, and displays the message
in bold tags without escaping.  If it is not a CGI environment and 
$ENV{info_function} is set, call the specified function with $msg as the sole
argument.  Otherwise, this function simply prints $msg to STDOUT.

=cut

sub info {
    my ( $self, $msg ) = @_;

    if ( $ENV{GATEWAY_INTERFACE} ) {
        $msg =~ s/\n/<br>/g;

        delete $self->{pre};

        if ( !$self->{header} ) {
            $self->header;
            print qq| <body>|;
            $self->{header} = 1;
        }

        print "<b>$msg</b>";

    }
    else {

        if ( $ENV{info_function} ) {
            &{ $ENV{info_function} }($msg);
        }
        else {
            print "$msg\n";
        }
    }
}

=item $form->numtextrows($str, $cols[, $maxrows]);

Returns the number of rows of $cols columns can be formed by $str.  If $maxrows
is set and the number of rows is greater than $maxrows, this returns $maxrows.
In the determination of rowcount, newline characters, "\n", are taken into
account while spaces are not.

=cut

sub numtextrows {

    my ( $self, $str, $cols, $maxrows ) = @_;

    my $rows = 0;

    for ( split /\n/, $str ) {
        $rows += int( ( (length) - 2 ) / $cols ) + 1;
    }

    $maxrows = $rows unless defined $maxrows;

    return ( $rows > $maxrows ) ? $maxrows : $rows;

}

=item $form->dberror($msg);

Outputs a message as in $form->error but with $DBI::errstr automatically
appended to $msg.

=cut

sub dberror {
    my ( $self, $msg ) = @_;
    $self->error( "$msg\n" . $DBI::errstr );
}

=item $form->isblank($name, $msg);

Calls $form->error($msg) if the value of $form->{$name} matches /^\s*$/.

=cut

sub isblank {
    my ( $self, $name, $msg ) = @_;
    $self->error($msg) if $self->{$name} =~ /^\s*$/;
}

=item $form->header([$init, $headeradd]);

Outputs HTML and HTTP headers and sets $form->{header} to indicate that headers
have been output.  If called with $form->{header} set or in a non-CGI
environment, does not output anything.  $init is ignored.  $headeradd is data
to be added to the <head> portion of the output headers.  $form->{stylesheet},
$form->{title}, $form->{titlebar}, and $form->{pre} all affect the output of
this function.

If the stylesheet indicated by $form->{stylesheet} exists, output a link tag
to reference it.  If $form->{title} is false, the title text is the value of
$form->{titlebar}.  If $form->{title} is true, the title text takes the form of
"$form->{title} - $form->{titlebar}".  The value of $form->{pre} is output 
immediately after the closing of <head>.

=cut

sub header {

    my ( $self, $init, $headeradd ) = @_;

    return if $self->{header};

    my ( $stylesheet, $favicon, $charset );

    if ( $ENV{GATEWAY_INTERFACE} ) {

        if ( $self->{stylesheet} && ( -f "css/$self->{stylesheet}" ) ) {
            $stylesheet =
qq|<link rel="stylesheet" href="css/$self->{stylesheet}" type="text/css" title="LedgerSMB stylesheet" />\n|;
        }

        $self->{charset} ||= "utf-8";
        $charset =
qq|<meta http-equiv="content-type" content="text/html; charset=$self->{charset}" />\n|;

        $self->{titlebar} =
          ( $self->{title} )
          ? "$self->{title} - $self->{titlebar}"
          : $self->{titlebar};

        print qq|Content-Type: text/html; charset=utf-8\n\n
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
		"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
	<title>$self->{titlebar}</title>
	<meta http-equiv="Pragma" content="no-cache" />
	<meta http-equiv="Expires" content="-1" />
	<link rel="shortcut icon" href="favicon.ico" type="image/x-icon" />
	$stylesheet
	$charset
	<meta name="robots" content="noindex,nofollow" />
        $headeradd
</head>

		$self->{pre} \n|;
    }

    $self->{header} = 1;
}

=item $form->redirect([$msg]);

If $form->{callback} is set or $msg is not set, call the redirect function in
common.pl.  If main::redirect returns, exit.

Otherwise, output $msg as an informational message with $form->info($msg).

=cut

sub redirect {

    my ( $self, $msg ) = @_;

    if ( $self->{callback} || !$msg ) {

        main::redirect();
	exit;
    }
    else {

        $self->info($msg);
    }
}

=item $form->sort_columns(@columns);

Sorts the list @columns.  If $form->{sort} is unset, do nothing.  If the value
of $form->{sort} does not exist in @columns, returns the list formed by the
value of $form->{sort} followed by the values of @columns.  If the value of
$form->{sort} is in @columns, return the list formed by @columns with the value
of $form->{sort} moved to the head of the list.

=cut

sub sort_columns {

    my ( $self, @columns ) = @_;

    if ( $self->{sort} ) {
        if (@columns) {
            @columns = grep !/^$self->{sort}$/, @columns;
            splice @columns, 0, 0, $self->{sort};
        }
    }

    @columns;
}

=item $form->sort_order($columns[, $ordinal]);

Returns a string that contains ordering details for the columns in SQL form.
$columns is a reference to a list of columns, $ordinal is a reference to a hash
that maps column names to ordinal positions.  This function depends upon the
values of $form->{direction}, $form->{sort}, and $form->{oldsort}.

If $form->{direction} is false, it becomes 'ASC'.  If $form->{direction} is true
and $form->{sort} and $form->{oldsort} are equal, reverse the order specified by
$form->{direction}.  $form->{oldsort} is set to the same value as $form->{sort}

The actual sorting of $columns happens as in $form->sort_columns(@$columns).

If $ordinal is set, the positions given by it are substituted for the names of
columns returned.

=cut

sub sort_order {

    my ( $self, $columns, $ordinal ) = @_;

    # setup direction
    if ( $self->{direction} ) {

        if ( $self->{sort} eq $self->{oldsort} ) {

            if ( $self->{direction} eq 'ASC' ) {
                $self->{direction} = "DESC";
            }
            else {
                $self->{direction} = "ASC";
            }
        }

    }
    else {

        $self->{direction} = "ASC";
    }

    $self->{oldsort} = $self->{sort};

    my @a = $self->sort_columns( @{$columns} );

    if (%$ordinal) {
        $a[0] =
          ( $ordinal->{ $a[$_] } )
          ? "$ordinal->{$a[0]} $self->{direction}"
          : "$a[0] $self->{direction}";

        for ( 1 .. $#a ) {
            $a[$_] = $ordinal->{ $a[$_] } if $ordinal->{ $a[$_] };
        }

    }
    else {
        $a[0] .= " $self->{direction}";
    }

    $sortorder = join ',', @a;
    $sortorder;
}

=item $form->format_amount($myconfig, $amount, $places, $dash);

Returns $amount as formatted in the form specified by $form->{numberformat}.
$places is the number of decimal places to have in the output.  $dash indicates
how to represent conditions surrounding values.

 +-------+----------+---------+------+
 | $dash | -1.00    | 1.00    | 0.00 |
 +-------+----------+---------+------+
 |   -   | (1.00)   | 1.00    |   -  |
 | DRCR  |  1.00 DR | 1.00 CR | DRCR |
 |   0   | -1.00    | 1.00    | 0.00 |
 |   x   | -1.00    | 1.00    |   x  |
 | undef | -1.00    | 1.00    |      |
 +-------+----------+---------+------+

Sample behaviour of the formatted output of various numbers for select $dash
values.

=cut

sub format_amount {

    my ( $self, $myconfig, $amount, $places, $dash ) = @_;

    my $negative;
    if ($amount) {
        $amount = $self->parse_amount( $myconfig, $amount );
        $negative = ( $amount < 0 );
        $amount =~ s/-//;
    }

    if ( $places =~ /\d+/ ) {

        #$places = 4 if $places == 2;
        $amount = $self->round_amount( $amount, $places );
    }

    # is the amount negative

    # Parse $myconfig->{numberformat}

    my ( $ts, $ds ) = ( $1, $2 );

    if ($amount) {

        if ( $myconfig->{numberformat} ) {

            my ( $whole, $dec ) = split /\./, "$amount";
            $amount = join '', reverse split //, $whole;

            if ($places) {
                $dec .= "0" x $places;
                $dec = substr( $dec, 0, $places );
            }

            if ( $myconfig->{numberformat} eq '1,000.00' ) {
                $amount =~ s/\d{3,}?/$&,/g;
                $amount =~ s/,$//;
                $amount = join '', reverse split //, $amount;
                $amount .= "\.$dec" if ( $dec ne "" );
            } 
	    elsif ( $myconfig->{numberformat} eq '1 000.00' ) {
                $amount =~ s/\d{3,}?/$& /g;
                $amount =~ s/\s$//;
                $amount = join '', reverse split //, $amount;
                $amount .= "\.$dec" if ( $dec ne "" );
            } 
	    elsif ( $myconfig->{numberformat} eq "1'000.00" ) {
                $amount =~ s/\d{3,}?/$&'/g;
                $amount =~ s/'$//;
                $amount = join '', reverse split //, $amount;
                $amount .= "\.$dec" if ( $dec ne "" );
            } 
	    elsif ( $myconfig->{numberformat} eq '1.000,00' ) {
                $amount =~ s/\d{3,}?/$&./g;
                $amount =~ s/\.$//;
                $amount = join '', reverse split //, $amount;
                $amount .= ",$dec" if ( $dec ne "" );
            } 
	    elsif ( $myconfig->{numberformat} eq '1000,00' ) {
                $amount = "$whole";
                $amount .= ",$dec" if ( $dec ne "" );
            } 
	    elsif ( $myconfig->{numberformat} eq '1000.00' ) {
                $amount = "$whole";
                $amount .= ".$dec" if ( $dec ne "" );
            }

            if ( $dash =~ /-/ ) {
                $amount = ($negative) ? "($amount)" : "$amount";
            }
            elsif ( $dash =~ /DRCR/ ) {
                $amount = ($negative) ? "$amount DR" : "$amount CR";
            }
            else {
                $amount = ($negative) ? "-$amount" : "$amount";
            }
        }

    }
    else {

        if ( $dash eq "0" && $places ) {

            if ( $myconfig->{numberformat} =~ /0,00$/ ) {
                $amount = "0" . "," . "0" x $places;
            }
            else {
                $amount = "0" . "." . "0" x $places;
            }

        }
        else {
            $amount = ( $dash ne "" ) ? "$dash" : "";
        }
    }

    $amount;
}

=item $form->parse_amount($myconfig, $amount);

Return a Math::BigFloat containing the value of $amount where $amount is
formatted as $myconfig->{numberformat}.  If $amount is '' or undefined, it is
treated as zero.  DRCR and parenthesis notation is accepted in addition to
negative sign notation.

=cut

sub parse_amount {

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

    if ( ( $amount eq '' ) or ( ! defined $amount ) ) {
        $amount = 0;
    }

    if ( UNIVERSAL::isa( $amount, 'Math::BigFloat' ) )
    {    # Amount may not be an object
        return $amount;
    }
    my $numberformat = $myconfig->{numberformat};

    if (   ( $numberformat eq '1.000,00' )
        || ( $numberformat eq '1000,00' ) )
    {

        $amount =~ s/\.//g;
        $amount =~ s/,/./;
    }
    elsif ( $numberformat eq '1 000.00' ) {
        $amount =~ s/\s//g;
    }
    elsif ( $numberformat eq "1'000.00" ) {
        $amount =~ s/'//g;
    }

    $amount =~ s/,//g;
    if ( $amount =~ s/\((\d*\.?\d*)\)/$1/ ) {
        $amount = $1 * -1;
    }
    elsif ( $amount =~ s/(\d*\.?\d*)\s?DR/$1/ ) {
        $amount = $1 * -1;
    }
    $amount =~ s/\s?CR//;

    $amount =~ /(\d*)\.(\d*)/;

    my $decimalplaces = length $1 + length $2;

    $amount = new Math::BigFloat($amount);

    return ( $amount * 1 );
}

=item rount_amount($amount, $places);

Rounds the provided $amount to $places decimal places.

=cut

sub round_amount {

    my ( $self, $amount, $places ) = @_;

    # These rounding rules follow from the previous implementation.
    # They should be changed to allow different rules for different accounts.
    Math::BigFloat->round_mode('+inf') if $amount >= 0;
    Math::BigFloat->round_mode('-inf') if $amount < 0;

    $amount = Math::BigFloat->new($amount)->ffround( -$places ) if $places >= 0;
    $amount = Math::BigFloat->new($amount)->ffround( -( $places - 1 ) )
      if $places < 0;

    $amount->precision(undef); #we are assuming whole cents so do not round
                               #immediately on arithmatic.  This is necessary
                               #because Math::BigFloat is arithmatically
                               #correct wrt accuracy and precision.

    return $amount;
}

=item $form->db_parse_numeric('sth' => $sth, ['arrayref' => $arrayref, 'hashref' => $hashref])

Converts numeric values in the result set $arrayref or $hashref to
Math::BigFloat using $sth to determine which fields are numeric.

=cut

sub db_parse_numeric {
    my $self = shift;
    my %args = @_;
    my ($sth, $arrayref, $hashref) = ($args{sth}, $args{arrayref}, 
          $args{hashref});
    my @types = @{$sth->{TYPE}};
    my @names = @{$sth->{NAME_lc}};
    for (0 .. $#names){
        if ($types[$_] == 3){
            $arrayref[$_] = Math::BigFloat->new($arrayref[$_]) 
              if defined $arrayref;
            $hashref->{$names[$_]} = Math::BigFloat->new($hashref->{$names[$_]})
              if defined $hashref;
        }

    }
    return ($hashref || $arrayref);
}

=item Form::callproc($procname);

Broken function.  Use $lsmb::call_procedure instead.

=cut

sub callproc {
    my $procname = shift @_;
    my $argstr   = "";
    my @results;
    for ( 1 .. $#_ ) {
        $argstr .= "?, ";
    }
    $argstr =~ s/\, $//;
    $query = "SELECT * FROM $procname";
    $query =~ s/\(\)/$argstr/;
    my $sth = $self->{dbh}->prepare($query);
    while ( my $ref = $sth->fetchrow_hashref(NAME_lc) ) {
        push @results, $ref;
    }
    @results;
}

=item $form->get_my_emp_num($myconfig, \%$form);

Function to get the employee number of the user $form->{login}.  $myconfig is
only used to create %myconfig.  $form->{emp_num} is set to the retrieved value.

This function is currently (2007-08-02) only used by pos.conf.pl.

=cut

sub get_my_emp_num {
    my ( $self, $myconfig) = @_;
    %myconfig = %{$myconfig};
    my $dbh = $form->{dbh};

    # we got a connection, check the version
    my $query = qq|
		SELECT employeenumber FROM employee 
		 WHERE login = ?|;
    my $sth = $dbh->prepare($query);
    $sth->execute( $form->{login} ) || $form->dberror($query);

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

=item $form->format_string(@fields);

Escape the values of $form selected by @fields for the format specified by
$form->{format}.

=cut

sub format_string {

    my ( $self, @fields ) = @_;

    my $format = $self->{format};

    if ( $self->{format} =~ /(postscript|pdf)/ ) {
        $format = 'tex';
    }

    my %replace = (
        'order' => {
            html => [ '<',  '>', '\n', '\r' ],
            txt  => [ '\n', '\r' ],
            tex  => [
                quotemeta('\\'), '&', '\n', '\r',
                '\$',            '%', '_',  '#',
                quotemeta('^'),  '{', '}',  '<',
                '>',             '£'
            ]
        },
        html => {
            '<'  => '&lt;',
            '>'  => '&gt;',
            '\n' => '<br />',
            '\r' => '<br />'
        },
        txt => { '\n' => "\n", '\r' => "\r" },
        tex => {
            '&'             => '\&',
            '$'             => '\$',
            '%'             => '\%',
            '_'             => '\_',
            '#'             => '\#',
            quotemeta('^')  => '\^\\',
            '{'             => '\{',
            '}'             => '\}',
            '<'             => '$<$',
            '>'             => '$>$',
            '\n'            => '\newline ',
            '\r'            => '\newline ',
            '£'            => '\pounds ',
            quotemeta('\\') => '/'
        }
    );

    my $key;

    foreach $key ( @{ $replace{order}{$format} } ) {
        for (@fields) { $self->{$_} =~ s/$key/$replace{$format}{$key}/g }
    }

}

=item $form->datetonum($myconfig, $date[, $picture]);

Converts $date from the format $myconfig->{dateformat} to the format 'yyyymmdd'.
If the year extracted is only two-digits, the year given is assumed to be in the
range 2000-2099.

If $date does not contain any digits, datetonum does nothing.

$picture is ignored.

=cut

sub datetonum {

    my ( $self, $myconfig, $date, $picture ) = @_;

    if ( $date && $date =~ /\D/ ) {

        if ( $myconfig->{dateformat} =~ /^yy/ ) {
            ( $yy, $mm, $dd ) = split /\D/, $date;
        }
        elsif ( $myconfig->{dateformat} =~ /^mm/ ) {
            ( $mm, $dd, $yy ) = split /\D/, $date;
        }
        elsif ( $myconfig->{dateformat} =~ /^dd/ ) {
            ( $dd, $mm, $yy ) = split /\D/, $date;
        }

        $dd *= 1;
        $mm *= 1;
        $yy += 2000 if length $yy == 2;

        $dd = substr( "0$dd", -2 );
        $mm = substr( "0$mm", -2 );

        $date = "$yy$mm$dd";
    }

    $date;
}

=item $form->add_date($myconfig, $date, $repeat, $unit);

Returns the date $repeat $units from $date in the input format.  $date can
either be in $myconfig->{dateformat} or 'yyyymmdd' (four digit year required for
this option).  The valid values for $unit are 'days', 'weeks', 'months', and
'years'.

This function is unreliable for $unit values other than 'days' or 'weeks' and
can die horribly.

=cut

sub add_date {

    my ( $self, $myconfig, $date, $repeat, $unit ) = @_;

    my $diff = 0;
    my $spc  = $myconfig->{dateformat};
    my $yy;
    my $mm;
    my $dd;
    $spc =~ s/\w//g;
    $spc = substr( $spc, 0, 1 );

    if ($date) {

        if ( $date =~ /\D/ ) {

            if ( $myconfig->{dateformat} =~ /^yy/ ) {
                ( $yy, $mm, $dd ) = split /\D/, $date;
            }
            elsif ( $myconfig->{dateformat} =~ /^mm/ ) {
                ( $mm, $dd, $yy ) = split /\D/, $date;
            }
            elsif ( $myconfig->{dateformat} =~ /^dd/ ) {
                ( $dd, $mm, $yy ) = split /\D/, $date;
            }

        }
        else {

            # ISO
            ( $yy, $mm, $dd ) = ($date =~ /(....)(..)(..)/);
        }

        if ( $unit eq 'days' ) {
            $diff = $repeat * 86400;
        }
        elsif ( $unit eq 'weeks' ) {
            $diff = $repeat * 604800;
        }
        elsif ( $unit eq 'months' ) {
            $diff = $mm + $repeat;

            my $whole = int( $diff / 12 );
            $yy += $whole;

            $mm = ( $diff % 12 );
            $mm = '12' if $mm == 0;
            $yy-- if $mm == 12;
            $diff = 0;
        }
        elsif ( $unit eq 'years' ) {
            $yy += $repeat;
        }

        $mm--;

        @t = localtime( Time::Local::timelocal( 0, 0, 0, $dd, $mm, $yy ) + $diff );

        $t[4]++;
        $mm = substr( "0$t[4]", -2 );
        $dd = substr( "0$t[3]", -2 );
        $yy = $t[5] + 1900;

        if ( $date =~ /\D/ ) {

            if ( $myconfig->{dateformat} =~ /^yy/ ) {
                $date = "$yy$spc$mm$spc$dd";
            }
            elsif ( $myconfig->{dateformat} =~ /^mm/ ) {
                $date = "$mm$spc$dd$spc$yy";
            }
            elsif ( $myconfig->{dateformat} =~ /^dd/ ) {
                $date = "$dd$spc$mm$spc$yy";
            }

        }
        else {
            $date = "$yy$mm$dd";
        }
    }

    $date;
}

=item $form->print_button($button, $name);

Outputs a submit button to STDOUT.  $button is a hashref that contains data
about buttons, $name is the key for the element in $button to output.  Each
value in $button is a reference to a hash of two elements, 'key' and 'value'.

$name is the value of the button that gets sent to the server when clicked,
$button->{$name}{key} is the accesskey, and $button->{$name}{value} is the label
for the button.

=cut

sub print_button {
    my ( $self, $button, $name ) = @_;

    print
qq|<button class="submit" type="submit" name="action" value="$name" accesskey="$button->{$name}{key}" title="$button->{$name}{value} [Alt-$button->{$name}{key}]">$button->{$name}{value}</button>\n|;
}

# Database routines used throughout

=item $form->db_init($myconfig);

Connect to the database that $myconfig is set to use and initialise the base
parameters.  The connection handle becomes $form->{dbh} and
$form->{custom_db_fields} is populated.  The connection initiated has
autocommit disabled.

=cut

sub db_init {
    my ( $self, $myconfig ) = @_;
    $self->{dbh} = $self->dbconnect_noauto($myconfig) || $self->dberror();
    %date_query = (
        'mm/dd/yy' => 'set DateStyle to \'SQL, US\'',
        'mm-dd-yy' => 'set DateStyle to \'POSTGRES, US\'',
        'dd/mm/yy' => 'set DateStyle to \'SQL, EUROPEAN\'',
        'dd-mm-yy' => 'set DateStyle to \'POSTGRES, EUROPEAN\'',
        'dd.mm.yy' => 'set DateStyle to \'GERMAN\''
    );

    $self->{dbh}->do( $date_query{ $myconfig->{dateformat} } );
    $self->{db_dateformat} = $myconfig->{dateformat};    #shim

    my $query = "SELECT t.extends, 
			coalesce (t.table_name, 'custom_' || extends) 
			|| ':' || f.field_name as field_def
		FROM custom_table_catalog t
		JOIN custom_field_catalog f USING (table_id)";
    my $sth = $self->{dbh}->prepare($query);
    $sth->execute;
    my $ref;
    while ( $ref = $sth->fetchrow_hashref(NAME_lc) ) {
        push @{ $self->{custom_db_fields}{ $ref->{extends} } },
          $ref->{field_def};
    }
}

sub run_custom_queries {
    my ( $self, $tablename, $query_type, $linenum ) = @_;
    my $dbh = $self->{dbh};
    if ( $query_type !~ /^(select|insert|update)$/i ) {
        $self->error(
            $locale->text(
                "Passed incorrect query type to run_custom_queries."
            )
        );
    }
    my @rc;
    my %temphash;
    my @templist;
    my @elements;
    my $query;
    my $ins_values;
    if ($linenum) {
        $linenum = "_$linenum";
    }

    $query_type = uc($query_type);
    for ( @{ $self->{custom_db_fields}{$tablename} } ) {
        @elements = split( /:/, $_ );
        push @{ $temphash{ $elements[0] } }, $elements[1];
    }
    for ( keys %temphash ) {
        my @data;
        my $ins_values;
        $query = "$query_type ";
        if ( $query_type eq 'UPDATE' ) {
            $query = "DELETE FROM $_ WHERE row_id = ?";
            my $sth = $dbh->prepare($query);
            $sth->execute( $self->{ "id" . "$linenum" } )
              || $self->dberror($query);
        }
        elsif ( $query_type eq 'INSERT' ) {
            $query .= " INTO $_ (";
        }
        my $first = 1;
        for ( @{ $temphash{$_} } ) {
            $query .= "$_";
            if ( $query_type eq 'UPDATE' ) {
                $query .= '= ?';
            }
            $ins_values .= "?, ";
            $query      .= ", ";
            $first = 0;
            if ( $query_type eq 'UPDATE' or $query_type eq 'INSERT' ) {
                push @data, $self->{"$_$linenum"};
            }
        }
        if ( $query_type ne 'INSERT' ) {
            $query =~ s/, $//;
        }
        if ( $query_type eq 'SELECT' ) {
            $query .= " FROM $_";
        }
        if ( $query_type eq 'SELECT' or $query_type eq 'UPDATE' ) {
            $query .= " WHERE row_id = ?";
        }
        if ( $query_type eq 'INSERT' ) {
            $query .= " row_id) VALUES ($ins_values ?)";
        }
        if ( $query_type eq 'SELECT' ) {
            push @rc, [$query];
        }
        else {
            unshift( @data, $query );
            push @rc, [@data];
        }
    }
    if ( $query_type eq 'INSERT' ) {
        for (@rc) {
            $query = shift( @{$_} );
            $sth   = $dbh->prepare($query)
              || $self->db_error($query);
            $sth->execute( @{$_}, $self->{id} )
              || $self->dberror($query);
            $sth->finish;
            $did_insert = 1;
        }
    }
    elsif ( $query_type eq 'UPDATE' ) {
        @rc = $self->run_custom_queries( $tablename, 'INSERT', $linenum );
    }
    elsif ( $query_type eq 'SELECT' ) {
        for (@rc) {
            $query = shift @{$_};
            $sth   = $self->{dbh}->prepare($query);
            $sth->execute( $self->{id} );
            $ref = $sth->fetchrow_hashref(NAME_lc);
            for ( keys %{$ref} ) {
                $self->{$_} = $ref->{$_};
            }
        }
    }
    @rc;
}

=item $form->dbconnect($myconfig);

Returns an autocommit connection to the database specified in $myconfig.

=cut

sub dbconnect {

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

    # connect to database
    my $dbh = DBI->connect( $myconfig->{dbconnect},
        $myconfig->{dbuser}, $myconfig->{dbpasswd} )
      or $self->dberror;
    $dbh->{pg_enable_utf8} = 1;

    # set db options
    if ( $myconfig->{dboptions} ) {
        $dbh->do( $myconfig->{dboptions} )
          || $self->dberror( $myconfig->{dboptions} );
    }

    $dbh;
}

=item $form->dbconnect_noauto($myconfig);

Returns a non-autocommit connection to the database specified in $myconfig.

=cut

sub dbconnect_noauto {

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

    # connect to database
    $dbh = DBI->connect(
        $myconfig->{dbconnect}, $myconfig->{dbuser},
        $myconfig->{dbpasswd}, { AutoCommit => 0 }
    ) or $self->dberror;
    $dbh->{pg_enable_utf8} = 1;

    # set db options
    if ( $myconfig->{dboptions} ) {
        $dbh->do( $myconfig->{dboptions} );
    }

    $dbh;
}

=item $form->dbquote($var);

If $var is an empty string, return NULL, otherwise return $var as quoted by
$form->{dbh}->quote($var).

=cut

sub dbquote {

    my ( $self, $var ) = @_;

    if ( $var eq '' ) {
        $_ = "NULL";
    }
    else {
        $_ = $self->{dbh}->quote($var);
    }
    $_;
}

sub update_balance {

    # This is a dangerous private function.  All apps calling it must
    # be careful to avoid SQL injection issues

    my ( $self, $dbh, $table, $field, $where, $value ) = @_;

    # if we have a value, go do it
    if ($value) {

        # retrieve balance from table
        my $query = "SELECT $field FROM $table WHERE $where FOR UPDATE";
        my ($balance) = $dbh->selectrow_array($query);

        $balance += $value;

        # update balance
        $query = "UPDATE $table SET $field = $balance WHERE $where";
        $dbh->do($query) || $self->dberror($query);
    }
}

=item $form->update_exchangerate($dbh, $curr, $transdate, $buy, $sell);

Updates the exchange rates $buy and $sell for the given $currency on $transdate.
If there is not yet an exchange rate for $currency on $transdate, an entry is
inserted.  This returns without doing anything if $curr eq ''.

$dbh is not used, favouring $self->{dbh}.

=cut

sub update_exchangerate {

    my ( $self, $dbh, $curr, $transdate, $buy, $sell ) = @_;

    # some sanity check for currency
    return if ( $curr eq "" );

    my $query = qq|
		SELECT curr 
		FROM exchangerate
		WHERE curr = ?
		AND transdate = ?
		FOR UPDATE|;

    my $sth = $self->{dbh}->prepare($query);
    $sth->execute( $curr, $transdate ) || $self->dberror($query);

    my $set;
    my @queryargs;

    if ( $buy && $sell ) {
        $set = "buy = ?, sell = ?";
        @queryargs = ( $buy, $sell );
    }
    elsif ($buy) {
        $set       = "buy = ?";
        @queryargs = ($buy);
    }
    elsif ($sell) {
        $set       = "sell = ?";
        @queryargs = ($sell);
    }

    if ( !$set ) {
        $self->error("Exchange rate missing!");
    }
    if ( $sth->fetchrow_array ) {
        $query = qq|UPDATE exchangerate
					   SET $set
					 WHERE curr = ?
					   AND transdate = ?|;
        push( @queryargs, $curr, $transdate );

    }
    else {
        $query = qq|
			INSERT INTO exchangerate (
			curr, buy, sell, transdate)
			VALUES (?, ?, ?, ?)|;
        @queryargs = ( $curr, $buy, $sell, $transdate );
    }
    $sth->finish;
    $sth = $self->{dbh}->prepare($query);

    $sth->execute(@queryargs) || $self->dberror($query);

}

=item $form->save_exchangerate($myconfig, $currency, $transdate, $rate, $fld);

Saves the exchange rate $rate for the given $currency on $transdate for the
provided purpose in $fld.  $fld can be either 'buy' or 'sell'.

$myconfig is not used.  $self->update_exchangerate is used for the majority of
the work.

=cut

sub save_exchangerate {

    my ( $self, $myconfig, $currency, $transdate, $rate, $fld ) = @_;

    my ( $buy, $sell ) = ( 0, 0 );
    $buy  = $rate if $fld eq 'buy';
    $sell = $rate if $fld eq 'sell';

    $self->update_exchangerate( $self->{dbh}, $currency, $transdate, $buy,
        $sell );

}

=item $form->get_exchangerate($dbh, $curr, $transdate, $fld);

Returns the exchange rate in relation to the default currency for $currency on
$transdate for the purpose indicated by $fld.  $fld can be either 'buy' or
'sell' to get usable results.

$dbh is not used, favouring $self->{dbh}.

=cut

sub get_exchangerate {

    my ( $self, $dbh, $curr, $transdate, $fld ) = @_;

    my $exchangerate = 1;

    if ($transdate) {
        my $query = qq|
			SELECT $fld FROM exchangerate
			WHERE curr = ? AND transdate = ?|;
        $sth = $self->{dbh}->prepare($query);
        $sth->execute( $curr, $transdate );

        ($exchangerate) = $sth->fetchrow_array;
	$exchangerate = Math::BigFloat->new($exchangerate);
    }

    $sth->finish;
    $exchangerate;
}

=item $form->check_exchangerate($myconfig, $currency, $transdate, $fld);

Returns some true value when an entry for $currency on $transdate is true for
the purpose indicated by $fld.  $fld can be either 'buy' or 'sell' to get
usable results.  Returns false if $transdate is not set.

$myconfig is not used.

=cut

sub check_exchangerate {

    my ( $self, $myconfig, $currency, $transdate, $fld ) = @_;

    return "" unless $transdate;

    my $query = qq|
		SELECT $fld 
		FROM exchangerate
		WHERE curr = ? AND transdate = ?|;

    my $sth = $self->{dbh}->prepare($query);
    $sth->execute( $currency, $transdate );
    my ($exchangerate) = $sth->fetchrow_array;

    $sth->finish;

    $exchangerate;
}

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

    my $shipto;

    foreach my $item (
        qw(name address1 address2 city state
        zipcode country contact phone fax email)
      )
    {

        if ( $self->{"shipto$item"} ne "" ) {
            $shipto = 1 if ( $self->{$item} ne $self->{"shipto$item"} );
        }
    }

    if ($shipto) {
        my $query = qq|
			INSERT INTO shipto 
			(trans_id, shiptoname, shiptoaddress1,
				shiptoaddress2, shiptocity, shiptostate,
				shiptozipcode, shiptocountry, shiptocontact,
				shiptophone, shiptofax, shiptoemail) 
			VALUES ( ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
			|;

        $sth = $self->{dbh}->prepare($query) || $self->dberror($query);
        $sth->execute(
            $id,                     $self->{shiptoname},
            $self->{shiptoaddress1}, $self->{shiptoaddress2},
            $self->{shiptocity},     $self->{shiptostate},
            $self->{shiptozipcode},  $self->{shiptocountry},
            $self->{shiptocontact},  $self->{shiptophone},
            $self->{shiptofax},      $self->{shiptoemail}
        ) || $self->dberror($query);
        $sth->finish;
    }
}

sub get_employee {
    my ( $self, $dbh ) = @_;

    my $login = $self->{login};
    $login =~ s/@.*//;

    my $query = qq|
		SELECT name, id
		  FROM entity WHERE id IN (select entity_id
					 FROM employee 
					WHERE login = ?)|;

    $sth = $self->{dbh}->prepare($query);
    $sth->execute($login);
    my (@a) = $sth->fetchrow_array();
    $a[1] *= 1;

    $sth->finish;

    @a;
}

# this sub gets the id and name from $table
sub get_name {

    my ( $self, $myconfig, $table, $transdate ) = @_;

    # connect to database

    my @queryargs;
    my $where;
    if ($transdate) {
        $where = qq|
			AND (startdate IS NULL OR startdate <= ?)
					AND (enddate IS NULL OR enddate >= ?)|;

        @queryargs = ( $transdate, $transdate );
    }
    
    # Company name is stored in $self->{vendor} or $self->{customer}
    my $name = $self->like( lc $self->{$table} );
    
    # Vendor and Customer are now views into entity_credit_account.
    my $query = qq|
		SELECT * FROM $table t
		JOIN entity e ON t.entity_id = e.id
		WHERE (lower(e.name) LIKE ? OR t.${table}number LIKE ?)
		$where
		ORDER BY e.name|;

    unshift( @queryargs, $name, $name, $table );
    my $sth = $self->{dbh}->prepare($query);

    $sth->execute(@queryargs) || $self->dberror($query);

    my $i = 0;
    @{ $self->{name_list} } = ();
    while ( $ref = $sth->fetchrow_hashref(NAME_lc) ) {
        push( @{ $self->{name_list} }, $ref );
        $i++;
    }
    $sth->finish;

    return $i;
}

sub all_vc {

    my ( $self, $myconfig, $vc, $module, $dbh, $transdate, $job ) = @_;

    my $ref;
    my $disconnect = 0;

    $dbh = $self->{dbh};

    my $sth;

    if ($vc eq 'customer'){
        $self->{vc_class} = 2;
    } else {
        $self->{vc_class} = 1;
    }
    my $query = qq|SELECT count(*) FROM entity_credit_account where entity_class = ?|;
    my $where;
    my @queryargs = ($self->{vc_class});

    if ($transdate) {
        $query .= qq| AND (startdate IS NULL OR startdate <= ?)
					AND (enddate IS NULL OR enddate >= ?)|;

        push (@queryargs, $transdate, $transdate );
    }

    $sth = $dbh->prepare($query);

    $sth->execute(@queryargs);

    my ($count) = $sth->fetchrow_array;

    $sth->finish;
    @queryargs = ();

    # build selection list
    if ( $count < $myconfig->{vclimit} ) {

        $self->{"${vc}_id"} *= 1;
        $where = "AND $where" if $where;

        $query = qq|SELECT id, name
					  FROM entity
					 WHERE id IN (select entity_id 
		                                        FROM $vc) 
                                               $where

					 UNION 

					SELECT id,name
					  FROM entity
					 WHERE id = ?
				  ORDER BY name|;

        push( @queryargs, $self->{"${vc}_id"} );

        $sth = $dbh->prepare($query);
        $sth->execute(@queryargs) || $self->dberror($query);

        @{ $self->{"all_$vc"} } = ();

        while ( $ref = $sth->fetchrow_hashref(NAME_lc) ) {
            push @{ $self->{"all_$vc"} }, $ref;
        }

        $sth->finish;

    }

    # get self
    if ( !$self->{employee_id} ) {
        ( $self->{employee}, $self->{employee_id} ) = split /--/,
          $self->{employee};
        ( $self->{employee}, $self->{employee_id} ) = $self->get_employee($dbh)
          unless $self->{employee_id};
    }

    $self->all_employees( $myconfig, $dbh, $transdate, 1 );

    $self->all_departments( $myconfig, $dbh, $vc );

    $self->all_projects( $myconfig, $dbh, $transdate, $job );

    # get language codes
    $query = qq|SELECT *
				  FROM language
			  ORDER BY 2|;

    $sth = $dbh->prepare($query);
    $sth->execute || $self->dberror($query);

    $self->{all_language} = ();

    while ( $ref = $sth->fetchrow_hashref(NAME_lc) ) {
        push @{ $self->{all_language} }, $ref;
    }

    $sth->finish;
    $self->all_taxaccounts( $myconfig, $dbh, $transdate );
}

sub all_taxaccounts {

    my ( $self, $myconfig, $dbh2, $transdate ) = @_;

    my $dbh = $self->{dbh};

    my $sth;
    my $query;
    my $where;

    my @queryargs = ();

    if ($transdate) {
        $where = qq| AND (t.validto >= ? OR t.validto IS NULL)|;
        push( @queryargs, $transdate );
    }

    if ( $self->{taxaccounts} ) {

        # rebuild tax rates
        $query = qq|SELECT t.rate, t.taxnumber 
					  FROM tax t 
					  JOIN chart c ON (c.id = t.chart_id) 
					 WHERE c.accno = ?
					$where
				  ORDER BY accno, validto|;

        $sth = $dbh->prepare($query) || $self->dberror($query);

        foreach my $accno ( split / /, $self->{taxaccounts} ) {
            $sth->execute( $accno, @queryargs );
            ( $self->{"${accno}_rate"}, $self->{"${accno}_taxnumber"} ) =
              $sth->fetchrow_array;
            $sth->finish;
        }
    }
}

sub all_employees {

    my ( $self, $myconfig, $dbh2, $transdate, $sales ) = @_;

    my $dbh       = $self->{dbh};
    my @whereargs = ();

    # setup employees/sales contacts
    my $query = qq|
		SELECT id, name
		FROM entity
		WHERE id IN (SELECT entity_id FROM employee
					WHERE|;

    if ($transdate) {
        $query .= qq| (startdate IS NULL OR startdate <= ?)
		AND (enddate IS NULL OR enddate >= ?) AND|;
        @whereargs = ( $transdate, $transdate );
    }
    else {
        $query .= qq| enddate IS NULL AND|;
    }

    if ($sales) {
        $query .= qq| sales = '1' AND|;
    }

    $query =~ s/(WHERE|AND)$//;
    $query .= qq|) ORDER BY name|;
    my $sth = $dbh->prepare($query);
    $sth->execute(@whereargs) || $self->dberror($query);

    while ( my $ref = $sth->fetchrow_hashref(NAME_lc) ) {
        push @{ $self->{all_employee} }, $ref;
    }

    $sth->finish;
}

sub all_projects {

    my ( $self, $myconfig, $dbh2, $transdate, $job ) = @_;

    my $dbh       = $self->{dbh};
    my @queryargs = ();

    my $where = "1 = 1";

    $where = qq|id NOT IN (SELECT id
							 FROM parts
							WHERE project_id > 0)| if !$job;

    my $query = qq|SELECT *
					 FROM project
					WHERE $where|;

    if ( $self->{language_code} ) {

        $query = qq|
			SELECT pr.*, t.description AS translation
			FROM project pr
			LEFT JOIN translation t ON (t.trans_id = pr.id)
			WHERE t.language_code = ?|;
        push( @queryargs, $self->{language_code} );
    }

    if ($transdate) {
        $query .= qq| AND (startdate IS NULL OR startdate <= ?)
				AND (enddate IS NULL OR enddate >= ?)|;
        push( @queryargs, $transdate, $transdate );
    }

    $query .= qq| ORDER BY projectnumber|;

    $sth = $dbh->prepare($query);
    $sth->execute(@queryargs) || $self->dberror($query);

    @{ $self->{all_project} } = ();

    while ( $ref = $sth->fetchrow_hashref(NAME_lc) ) {
        push @{ $self->{all_project} }, $ref;
    }

    $sth->finish;
}

sub all_departments {

    my ( $self, $myconfig, $dbh2, $vc ) = @_;

    $dbh = $self->{dbh};

    my $where = "1 = 1";

    if ($vc) {
        if ( $vc eq 'customer' ) {
            $where = " role = 'P'";
        }
    }

    my $query = qq|SELECT id, description
					 FROM department
					WHERE $where
				 ORDER BY 2|;

    my $sth = $dbh->prepare($query);
    $sth->execute || $self->dberror($query);

    @{ $self->{all_department} } = ();

    while ( my $ref = $sth->fetchrow_hashref(NAME_lc) ) {
        push @{ $self->{all_department} }, $ref;
    }

    $sth->finish;
    $self->all_years($myconfig);
}

sub all_years {

    my ( $self, $myconfig, $dbh2 ) = @_;

    $dbh = $self->{dbh};

    # get years
    my $query = qq|
                SELECT (SELECT transdate FROM acc_trans ORDER BY transdate asc
                                LIMIT 1),
                       (SELECT transdate FROM acc_trans ORDER BY transdate desc
                                LIMIT 1)|;

    my ( $startdate, $enddate ) = $dbh->selectrow_array($query);

    if ( $myconfig->{dateformat} =~ /^yy/ ) {
        ($startdate) = split /\W/, $startdate;
        ($enddate)   = split /\W/, $enddate;
    }
    else {
        (@_) = split /\W/, $startdate;
        $startdate = $_[2];
        (@_) = split /\W/, $enddate;
        $enddate = $_[2];
    }

    $self->{all_years} = ();
    $startdate = substr( $startdate, 0, 4 );
    $enddate   = substr( $enddate,   0, 4 );

    while ( $enddate >= $startdate ) {
        push @{ $self->{all_years} }, $enddate--;
    }

    #this should probably be changed to use locale
    %{ $self->{all_month} } = (
        '01' => 'January',
        '02' => 'February',
        '03' => 'March',
        '04' => 'April',
        '05' => 'May ',
        '06' => 'June',
        '07' => 'July',
        '08' => 'August',
        '09' => 'September',
        '10' => 'October',
        '11' => 'November',
        '12' => 'December'
    );

}

sub create_links {

    my ( $self, $module, $myconfig, $vc, $job ) = @_;

    # get last customers or vendors
    my ( $query, $sth );

    if (!$self->{dbh}) {
        $self->db_init($myconfig);
    }

    $dbh = $self->{dbh};

    my %xkeyref = ();

    # now get the account numbers
    $query = qq|SELECT accno, description, link
				  FROM chart
				 WHERE link LIKE ?
			  ORDER BY accno|;

    $sth = $dbh->prepare($query);
    $sth->execute( "%" . "$module%" ) || $self->dberror($query);

    $self->{accounts} = "";

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

        foreach my $key ( split /:/, $ref->{link} ) {

            if ( $key =~ /$module/ ) {

                # cross reference for keys
                $xkeyref{ $ref->{accno} } = $key;

                push @{ $self->{"${module}_links"}{$key} },
                  {
                    accno       => $ref->{accno},
                    description => $ref->{description}
                  };

                $self->{accounts} .= "$ref->{accno} "
                  unless $key =~ /tax/;
            }
        }
    }

    $sth->finish;

    my $arap = ( $vc eq 'customer' ) ? 'ar' : 'ap';

    if ( $self->{id} ) {

        $query = qq|
			SELECT a.invnumber, a.transdate,
				a.${vc}_id, a.datepaid, a.duedate, a.ordnumber,
				a.taxincluded, a.curr AS currency, a.notes, 
				a.intnotes, c.name AS $vc, a.department_id, 
				d.description AS department,
				a.amount AS oldinvtotal, a.paid AS oldtotalpaid,
				a.employee_id, e.name AS employee, 
				c.language_code, a.ponumber, a.reverse
			FROM $arap a
			JOIN $vc c ON (a.${vc}_id = c.id)
			LEFT JOIN employee e ON (e.id = a.employee_id)
			LEFT JOIN department d ON (d.id = a.department_id)
			WHERE a.id = ?|;

        $sth = $dbh->prepare($query);
        $sth->execute( $self->{id} ) || $self->dberror($query);

        $ref = $sth->fetchrow_hashref(NAME_lc);
        $self->db_parse_numeric(sth=>$sth, hashref=>$ref);

        foreach $key ( keys %$ref ) {
            $self->{$key} = $ref->{$key};
        }

        $sth->finish;

        # get printed, emailed
        $query = qq|
			SELECT s.printed, s.emailed, s.spoolfile, s.formname
			FROM status s WHERE s.trans_id = ?|;

        $sth = $dbh->prepare($query);
        $sth->execute( $self->{id} ) || $self->dberror($query);

        while ( $ref = $sth->fetchrow_hashref(NAME_lc) ) {
            $self->{printed} .= "$ref->{formname} "
              if $ref->{printed};
            $self->{emailed} .= "$ref->{formname} "
              if $ref->{emailed};
            $self->{queued} .= "$ref->{formname} " . "$ref->{spoolfile} "
              if $ref->{spoolfile};
        }

        $sth->finish;
        for (qw(printed emailed queued)) { $self->{$_} =~ s/ +$//g }

        # get recurring
        $self->get_recurring($dbh);

        # get amounts from individual entries
        $query = qq|
			SELECT c.accno, c.description, a.source, a.amount,
				a.memo, a.transdate, a.cleared, a.project_id,
				p.projectnumber
			FROM acc_trans a
			JOIN chart c ON (c.id = a.chart_id)
			LEFT JOIN project p ON (p.id = a.project_id)
			WHERE a.trans_id = ?
				AND a.fx_transaction = '0'
			ORDER BY transdate|;

        $sth = $dbh->prepare($query);
        $sth->execute( $self->{id} ) || $self->dberror($query);

        my $fld = ( $vc eq 'customer' ) ? 'buy' : 'sell';

        $self->{exchangerate} =
          $self->get_exchangerate( $dbh, $self->{currency}, $self->{transdate},
            $fld );

        # store amounts in {acc_trans}{$key} for multiple accounts
        while ( my $ref = $sth->fetchrow_hashref(NAME_lc) ) {
            $ref->{exchangerate} =
              $self->get_exchangerate( $dbh, $self->{currency},
                $ref->{transdate}, $fld );
            if ($form->{reverse}){
                $ref->{amount} *= -1;
            }

            push @{ $self->{acc_trans}{ $xkeyref{ $ref->{accno} } } }, $ref;
        }

        $sth->finish;


    }
    else {

        if ( !$self->{"$self->{vc}_id"} ) {
            $self->lastname_used( $myconfig, $dbh, $vc, $module );
        }
    }
    for (qw(current_date curr closedto revtrans)) {
        if ($_ eq 'closedto'){
            $query = qq|
				SELECT value::date FROM defaults
				 WHERE setting_key = '$_'|;
        } elsif ($_ eq 'current_date') {
            $query = qq| select $_|;
        } else {
            $query = qq|
				SELECT value FROM defaults 
				 WHERE setting_key = '$_'|;
        }

        $sth = $dbh->prepare($query);
        $sth->execute || $self->dberror($query);

        ($val) = $sth->fetchrow_array();
        if ( $_ eq 'curr' ) {
            $self->{currencies} = $val;
        }
        else {
            $self->{$_} = $val;
        }
        $sth->finish;
    }
    if (!$self->{id}){
        $self->{transdate} = $self->{current_date};
    }

    $self->all_vc( $myconfig, $vc, $module, $dbh, $self->{transdate}, $job );
}

sub lastname_used {

    my ( $self, $myconfig, $dbh2, $vc, $module ) = @_;

    my $dbh = $self->{dbh};
    $vc ||= $self->{vc};    # add default to correct for improper passing
    my $arap = ( $vc eq 'customer' ) ? "ar" : "ap";
    my $sth;

    if ( $self->{type} =~ /_order/ ) {
        $arap  = 'oe';
        $where = "quotation = '0'";
    }

    if ( $self->{type} =~ /_quotation/ ) {
        $arap  = 'oe';
        $where = "quotation = '1'";
    }
    $where = "AND $where " if $where;
    $inv_notes = "ct.invoice_notes," if $vc eq 'customer';
    my $query = qq|
		SELECT entity.name, ct.curr AS currency, entity_id AS ${vc}_id,
			current_date + ct.terms AS duedate, 
			$inv_notes 
			ct.curr AS currency
		FROM $vc ct
		JOIN entity ON (ct.entity_id = entity.id)
		WHERE entity.id = (select entity_id from $arap 
		                    where entity_id IS NOT NULL $where 
                                 order by id DESC limit 1)|;

    $sth = $self->{dbh}->prepare($query);
    $sth->execute() || $self->dberror($query);

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

=item $form->current_date($myconfig[, $thisdate, $days]);

If $thisdate is false, get the current date from the database.

If $thisdate is true, get the date $days days from $thisdate in the date
format specified by $myconfig->{dateformat} from the database.

=cut

sub current_date {

    my ( $self, $myconfig, $thisdate, $days ) = @_;

    my $dbh = $self->{dbh};
    my $query;

    $days *= 1;
    if ($thisdate) {

        my $dateformat = $myconfig->{dateformat};

        if ( $myconfig->{dateformat} !~ /^y/ ) {
            my @a = split /\D/, $thisdate;
            $dateformat .= "yy" if ( length $a[2] > 2 );
        }

        if ( $thisdate !~ /\D/ ) {
            $dateformat = 'yyyymmdd';
        }

        $query = qq|SELECT (to_date(?, ?) 
				+ ?::interval)::date AS thisdate|;
        @queryargs = ( $thisdate, $dateformat, sprintf('%d days', $days) );

    }
    else {
        $query     = qq|SELECT current_date AS thisdate|;
        @queryargs = ();
    }

    $sth = $dbh->prepare($query);
    $sth->execute(@queryargs);
    ($thisdate) = $sth->fetchrow_array;
    $thisdate;
}

=item $form->like($str);

Returns '%$str%'

=cut

sub like {

    my ( $self, $str ) = @_;

    "%$str%";
}

sub redo_rows {

    my ( $self, $flds, $new, $count, $numrows ) = @_;

    my @ndx = ();

    for ( 1 .. $count ) {
        push @ndx, { num => $new->[ $_ - 1 ]->{runningnumber}, ndx => $_ };
    }

    my $i = 0;

    # fill rows
    foreach my $item ( sort { $a->{num} <=> $b->{num} } @ndx ) {
        $i++;
        $j = $item->{ndx} - 1;
        for ( @{$flds} ) { $self->{"${_}_$i"} = $new->[$j]->{$_} }
    }

    # delete empty rows
    for $i ( $count + 1 .. $numrows ) {
        for ( @{$flds} ) { delete $self->{"${_}_$i"} }
    }
}

sub get_partsgroup {

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

    my $dbh = $self->{dbh};

    my $query = qq|SELECT DISTINCT pg.id, pg.partsgroup
					 FROM partsgroup pg
					 JOIN parts p ON (p.partsgroup_id = pg.id)|;

    my $where;
    my $sortorder = "partsgroup";

    if ( $p->{searchitems} eq 'part' ) {
        $where = qq| WHERE (p.inventory_accno_id > 0
					   AND p.income_accno_id > 0)|;
    }

    if ( $p->{searchitems} eq 'service' ) {
        $where = qq| WHERE p.inventory_accno_id IS NULL|;
    }

    if ( $p->{searchitems} eq 'assembly' ) {
        $where = qq| WHERE p.assembly = '1'|;
    }

    if ( $p->{searchitems} eq 'labor' ) {
        $where =
          qq| WHERE p.inventory_accno_id > 0 AND p.income_accno_id IS NULL|;
    }

    if ( $p->{searchitems} eq 'nolabor' ) {
        $where = qq| WHERE p.income_accno_id > 0|;
    }

    if ( $p->{all} ) {
        $query = qq|SELECT id, partsgroup
					  FROM partsgroup|;
    }
    my @queryargs = ();

    if ( $p->{language_code} ) {
        $sortorder = "translation";

        $query = qq|
			SELECT DISTINCT pg.id, pg.partsgroup,
				t.description AS translation
			FROM partsgroup pg
			JOIN parts p ON (p.partsgroup_id = pg.id)
			LEFT JOIN translation t ON (t.trans_id = pg.id 
				AND t.language_code = ?)|;
        @queryargs = ( $p->{language_code} );
    }

    $query .= qq| $where ORDER BY $sortorder|;

    my $sth = $dbh->prepare($query);
    $sth->execute(@queryargs) || $self->dberror($query);

    $self->{all_partsgroup} = ();

    while ( my $ref = $sth->fetchrow_hashref(NAME_lc) ) {
        push @{ $self->{all_partsgroup} }, $ref;
    }

    $sth->finish;
}

sub update_status {

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

    # no id return
    return unless $self->{id};

    my $dbh = $self->{dbh};

    my %queued = split / +/, $self->{queued};
    my $spoolfile =
      ( $queued{ $self->{formname} } )
      ? "'$queued{$self->{formname}}'"
      : 'NULL';

    my $query = qq|DELETE FROM status
					WHERE formname = ?
					  AND trans_id = ?|;

    $sth = $dbh->prepare($query);
    $sth->execute( $self->{formname}, $self->{id} ) || $self->dberror($query);

    $sth->finish;

    my $printed = ( $self->{printed} =~ /$self->{formname}/ ) ? "1" : "0";
    my $emailed = ( $self->{emailed} =~ /$self->{formname}/ ) ? "1" : "0";

    $query = qq|
		INSERT INTO status 
			(trans_id, printed, emailed, spoolfile, formname) 
		VALUES (?, ?, ?, ?, ?)|;

    $sth = $dbh->prepare($query);
    $sth->execute( $self->{id}, $printed, $emailed, $spoolfile,
        $self->{formname} );
    $sth->finish;

}

sub save_status {

    my ($self) = @_;

    $dbh = $self->{dbh};

    my $formnames  = $self->{printed};
    my $emailforms = $self->{emailed};

    my $query = qq|DELETE FROM status
					WHERE trans_id = ?|;

    my $sth = $dbh->prepare($query);
    $sth->execute( $self->{id} );
    $sth->finish;

    my %queued;
    my $formname;

    if ( $self->{queued} ) {

        %queued = split / +/, $self->{queued};

        foreach $formname ( keys %queued ) {

            $printed = ( $self->{printed} =~ /$formname/ ) ? "1" : "0";
            $emailed = ( $self->{emailed} =~ /$formname/ ) ? "1" : "0";

            if ( $queued{$formname} ) {
                $query = qq|
					INSERT INTO status 
						(trans_id, printed, emailed,
						spoolfile, formname)
					VALUES (?, ?, ?, ?, ?)|;

                $sth = $dbh->prepare($query);
                $sth->execute( $self->{id}, $pinted, $emailed,
                    $queued{$formname}, $formname )
                  || $self->dberror($query);
                $sth->finish;
            }

            $formnames  =~ s/$formname//;
            $emailforms =~ s/$formname//;

        }
    }

    # save printed, emailed info
    $formnames  =~ s/^ +//g;
    $emailforms =~ s/^ +//g;

    my %status = ();
    for ( split / +/, $formnames )  { $status{$_}{printed} = 1 }
    for ( split / +/, $emailforms ) { $status{$_}{emailed} = 1 }

    foreach my $formname ( keys %status ) {
        $printed = ( $formnames  =~ /$self->{formname}/ ) ? "1" : "0";
        $emailed = ( $emailforms =~ /$self->{formname}/ ) ? "1" : "0";

        $query = qq|
			INSERT INTO status (trans_id, printed, emailed, 
				formname)
			VALUES (?, ?, ?, ?)|;

        $sth = $dbh->prepare($query);
        $sth->execute( $self->{id}, $printed, $emailed, $formname );
        $sth->finish;
    }
    $dbh->commit;
}

sub get_recurring {

    my ($self) = @_;

    $dbh = $self->{dbh};
    my $query = qq/
		SELECT s.*, se.formname || ':' || se.format AS emaila,
			se.message, sp.formname || ':' || 
				sp.format || ':' || sp.printer AS printa
		FROM recurring s
		LEFT JOIN recurringemail se ON (s.id = se.id)
		LEFT JOIN recurringprint sp ON (s.id = sp.id)
		WHERE s.id = ?/;

    my $sth = $dbh->prepare($query);
    $sth->execute( $self->{id} ) || $self->dberror($query);

    for (qw(email print)) { $self->{"recurring$_"} = "" }

    while ( my $ref = $sth->fetchrow_hashref(NAME_lc) ) {
        for ( keys %$ref ) { $self->{"recurring$_"} = $ref->{$_} }
        $self->{recurringemail} .= "$ref->{emaila}:";
        $self->{recurringprint} .= "$ref->{printa}:";
        for (qw(emaila printa)) { delete $self->{"recurring$_"} }
    }

    $sth->finish;
    chop $self->{recurringemail};
    chop $self->{recurringprint};

    if ( $self->{recurringstartdate} ) {
        $self->{recurringreference} =
          $self->escape( $self->{recurringreference}, 1 );
        $self->{recurringmessage} =
          $self->escape( $self->{recurringmessage}, 1 );
        for (
            qw(reference startdate repeat unit howmany
            payment print email message)
          )
        {

            $self->{recurring} .= qq|$self->{"recurring$_"},|;
        }

        chop $self->{recurring};
    }
}

sub save_recurring {

    my ( $self, $dbh2, $myconfig ) = @_;

    my $dbh = $self->{dbh};

    my $query;

    $query = qq|DELETE FROM recurring
				 WHERE id = ?|;

    $sth = $dbh->prepare($query) || $self->dberror($query);
    $sth->execute( $self->{id} ) || $self->dberror($query);

    $query = qq|DELETE FROM recurringemail
				 WHERE id = ?|;

    $sth = $dbh->prepare($query) || $self->dberror($query);
    $sth->execute( $self->{id} ) || $self->dberror($query);

    $query = qq|DELETE FROM recurringprint
				 WHERE id = ?|;

    $sth = $dbh->prepare($query) || $self->dberror($query);
    $sth->execute( $self->{id} ) || $self->dberror($query);

    if ( $self->{recurring} ) {

        my %s = ();
        (
            $s{reference}, $s{startdate}, $s{repeat},
            $s{unit},      $s{howmany},   $s{payment},
            $s{print},     $s{email},     $s{message}
        ) = split /,/, $self->{recurring};

        if ($s{howmany} == 0){
            $self->error("Cannot set to recur 0 times");
        }

        for (qw(reference message)) { $s{$_} = $self->unescape( $s{$_} ) }
        for (qw(repeat howmany payment)) { $s{$_} *= 1 }

        # calculate enddate
        my $advance = $s{repeat} * ( $s{howmany} - 1 );
        my %interval;
        $interval{'Pg'} =
          "(date '$s{startdate}' + interval '$advance $s{unit}')";

        $query = qq|SELECT $interval{$myconfig->{dbdriver}}|;

        my ($enddate) = $dbh->selectrow_array($query);

        # calculate nextdate
        $query = qq|
			SELECT current_date - ?::date AS a,
				?::date - current_date AS b|;

        $sth = $dbh->prepare($query) || $self->dberror($query);
        $sth->execute( $s{startdate}, $enddate );
        my ( $a, $b ) = $sth->fetchrow_array;

        if ( $a + $b ) {
            $advance =
              int( ( $a / ( $a + $b ) ) * ( $s{howmany} - 1 ) + 1 ) *
              $s{repeat};
        }
        else {
            $advance = 0;
        }

        my $nextdate = $enddate;
        if ( $advance > 0 ) {
            if ( $advance < ( $s{repeat} * $s{howmany} ) ) {

                $query = qq|SELECT (date '$s{startdate}' + interval '$advance $s{unit}')|;

                ($nextdate) = $dbh->selectrow_array($query);
            }

        }
        else {
            $nextdate = $s{startdate};
        }

        if ( $self->{recurringnextdate} ) {

            $nextdate = $self->{recurringnextdate};

            $query = qq|SELECT '$enddate' - date '$nextdate'|;

            if ( $dbh->selectrow_array($query) < 0 ) {
                undef $nextdate;
            }
        }

        $self->{recurringpayment} *= 1;

        $query = qq|
			INSERT INTO recurring 
				(id, reference, startdate, enddate, nextdate, 
				repeat, unit, howmany, payment)
			VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)|;

        $sth = $dbh->prepare($query);
        $sth->execute(
            $self->{id}, $s{reference}, $s{startdate},
            $enddate,    $nextdate,     $s{repeat},
            $s{unit},    $s{howmany},   $s{payment}
        );

        my @p;
        my $p;
        my $i;
        my $sth;

        if ( $s{email} ) {

            # formname:format
            @p = split /:/, $s{email};

            $query =
              qq|INSERT INTO recurringemail (id, formname, format, message)
						VALUES (?, ?, ?, ?)|;

            $sth = $dbh->prepare($query) || $self->dberror($query);

            for ( $i = 0 ; $i <= $#p ; $i += 2 ) {
                $sth->execute( $self->{id}, $p[$i], $p[ $i + 1 ], $s{message} );
            }

            $sth->finish;
        }

        if ( $s{print} ) {

            # formname:format:printer
            @p = split /:/, $s{print};

            $query =
              qq|INSERT INTO recurringprint (id, formname, format, printer)
						VALUES (?, ?, ?, ?)|;

            $sth = $dbh->prepare($query) || $self->dberror($query);

            for ( $i = 0 ; $i <= $#p ; $i += 3 ) {
                $p = ( $p[ $i + 2 ] ) ? $p[ $i + 2 ] : "";
                $sth->execute( $self->{id}, $p[$i], $p[ $i + 1 ], $p );
            }

            $sth->finish;
        }
    }
    $dbh->commit;

}

sub save_intnotes {

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

    # no id return
    return unless $self->{id};

    my $dbh = $self->{dbh};

    my $query = qq|UPDATE $vc SET intnotes = ? WHERE id = ?|;

    $sth = $dbh->prepare($query);
    $sth->execute( $self->{intnotes}, $self->{id} ) || $self->dberror($query);
    $dbh->commit;
}

=item $form->update_defaults($myconfig, $fld[, $dbh]);

Updates the defaults entry for the setting $fld following rules specified by
the existing value and returns the processed value that results.  If $form is
false, such as the case when invoked as "Form::update_defaults('',...)", $dbh is
used as the handle.  When $form is set, it uses $form->{dbh}, initialising the
connection if it does not yet exist.  The entry $fld must exist prior to
executing this function and this update function does not handle the general
case of updating the defaults table.

B<NOTE>: rules handling is currently broken.

Rules followed by this function's processing:

=over

=item *

If digits are found in the field, increment the left-most set.  This change,
unlike the others is reflected in the UPDATE.

=item *

Replace <?lsmb date ?> with the date specified in $form->{transdate} formatted
as $myconfig->{dateformat}.

=item *

Replace <?lsmb curr ?> with the value of $form->{currency}

=back

=cut

sub update_defaults {

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

    if ( !$self->{dbh} && $self ) {
        $self->db_init($myconfig);
    }

    my $dbh = $self->{dbh};

    if ( !$self ) {
        $dbh = $_[3];
    }

    my $query = qq|
		SELECT value FROM defaults 
		 WHERE setting_key = ? FOR UPDATE|;
    $sth = $dbh->prepare($query);
    $sth->execute($fld);
    ($_) = $sth->fetchrow_array();

    $_ = "0" unless $_;

# check for and replace
# <?lsmb DATE ?>, <?lsmb YYMMDD ?>, <?lsmb YEAR ?>, <?lsmb MONTH ?>, <?lsmb DAY ?> or variations of
# <?lsmb NAME 1 1 3 ?>, <?lsmb BUSINESS ?>, <?lsmb BUSINESS 10 ?>, <?lsmb CURR... ?>
# <?lsmb DESCRIPTION 1 1 3 ?>, <?lsmb ITEM 1 1 3 ?>, <?lsmb PARTSGROUP 1 1 3 ?> only for parts
# <?lsmb PHONE ?> for customer and vendors

    my $num = $_;
    ($num) = $num =~ /(\d+)/;

    if ( defined $num ) {
        my $incnum;

        # if we have leading zeros check how long it is

        if ( $num =~ /^0/ ) {
            my $l = length $num;
            $incnum = $num + 1;
            $l -= length $incnum;

            # pad it out with zeros
            my $padzero = "0" x $l;
            $incnum = ( "0" x $l ) . $incnum;
        }
        else {
            $incnum = $num + 1;
        }

        s/$num/$incnum/;
    }

    my $dbvar = $_;
    my $var   = $_;
    my $str;
    my $param;

    if (/<\?lsmb /) {

        while (/<\?lsmb /) {

            s/<\?lsmb .*? \?>//;
            last unless $&;
            $param = $&;
            $str   = "";

            if ( $param =~ /<\?lsmb date \?>/i ) {
                $str = (
                    $self->split_date(
                        $myconfig->{dateformat},
                        $self->{transdate}
                    )
                )[0];
                $var =~ s/$param/$str/;
            }

            if ( $param =~
/<\?lsmb (name|business|description|item|partsgroup|phone|custom)/i
              )
            {
	        #SC: XXX hairy, undoc, possibly broken

                my $fld = lc $&;
                $fld =~ s/<\?lsmb //;

                if ( $fld =~ /name/ ) {
                    if ( $self->{type} ) {
                        $fld = $self->{vc};
                    }
                }

                my $p = $param;
                $p =~ s/(<|>|%)//g;
                my @p = split / /, $p;
                my @n = split / /, uc $self->{$fld};

                if ( $#p > 0 ) {

                    for ( my $i = 1 ; $i <= $#p ; $i++ ) {
                        $str .= substr( $n[ $i - 1 ], 0, $p[$i] );
                    }

                }
                else {
                    ($str) = split /--/, $self->{$fld};
                }

                $var =~ s/$param/$str/;
                $var =~ s/\W//g if $fld eq 'phone';
            }

            if ( $param =~ /<\?lsmb (yy|mm|dd)/i ) {

		# SC: XXX Does this even work anymore?
                my $p = $param;
                $p =~ s/(<|>|%)//g;
                my $spc = $p;
                $spc =~ s/\w//g;
                $spc = substr( $spc, 0, 1 );
                my %d = ( yy => 1, mm => 2, dd => 3 );
                my @p = ();

                my @a = $self->split_date( $myconfig->{dateformat},
                    $self->{transdate} );
                for ( sort keys %d ) { push @p, $a[ $d{$_} ] if ( $p =~ /$_/ ) }
                $str = join $spc, @p;
                $var =~ s/$param/$str/;
            }

            if ( $param =~ /<\?lsmb curr/i ) {
                $var =~ s/$param/$self->{currency}/;
            }
        }
    }

    $query = qq|
		UPDATE defaults
		   SET value = ?
		 WHERE setting_key = ?|;

    $sth = $dbh->prepare($query);
    $sth->execute( $dbvar, $fld ) || $self->dberror($query);

    $dbh->commit;

    $var;
}

=item $form->db_prepare_vars(var1, var2, ..., varI<n>)

Undefines $form->{varI<m>}, 1 <= I<m> <= I<n>, iff $form-<{varI<m> is both
false and not "0".

=cut

sub db_prepare_vars {
    my $self = shift;

    for (@_) {
        if ( !$self->{$_} and $self->{$_} ne "0" ) {
            undef $self->{$_};
        }
    }
}

=item $form->split_date($dateformat[, $date]);

Returns ($rv, $yy, $mm, $dd) for the provided $date, or the current date if no
date is provided.  $rv is a seperator-free merging of the fields $yy, $mm, and
$dd in the ordering supplied by $dateformat.  If the supplied $date does not
contain non-digit characters, $rv is $date and the other return values are
undefined.

$yy is two digits.

=cut

sub split_date {

    my ( $self, $dateformat, $date ) = @_;

    my $mm;
    my $dd;
    my $yy;
    my $rv;

    if ( !$date ) {
        my @d = localtime;
        $dd = $d[3];
        $mm = ++$d[4];
        $yy = substr( $d[5], -2 );
        $mm = substr( "0$mm", -2 );
        $dd = substr( "0$dd", -2 );
    }

    if ( $dateformat =~ /^yy/ ) {

        if ($date) {

            if ( $date =~ /\D/ ) {
                ( $yy, $mm, $dd ) = split /\D/, $date;
                $mm *= 1;
                $dd *= 1;
                $mm = substr( "0$mm", -2 );
                $dd = substr( "0$dd", -2 );
                $yy = substr( $yy,    -2 );
                $rv = "$yy$mm$dd";
            }
            else {
                $rv = $date;
            }
        }
        else {
            $rv = "$yy$mm$dd";
        }
    }
    elsif ( $dateformat =~ /^mm/ ) {

        if ($date) {

            if ( $date =~ /\D/ ) {
                ( $mm, $dd, $yy ) = split /\D/, $date;
                $mm *= 1;
                $dd *= 1;
                $mm = substr( "0$mm", -2 );
                $dd = substr( "0$dd", -2 );
                $yy = substr( $yy,    -2 );
                $rv = "$mm$dd$yy";
            }
            else {
                $rv = $date;
            }
        }
        else {
            $rv = "$mm$dd$yy";
        }
    }
    elsif ( $dateformat =~ /^dd/ ) {

        if ($date) {

            if ( $date =~ /\D/ ) {
                ( $dd, $mm, $yy ) = split /\D/, $date;
                $mm *= 1;
                $dd *= 1;
                $mm = substr( "0$mm", -2 );
                $dd = substr( "0$dd", -2 );
                $yy = substr( $yy,    -2 );
                $rv = "$dd$mm$yy";
            }
            else {
                $rv = $date;
            }
        }
        else {
            $rv = "$dd$mm$yy";
        }
    }

    ( $rv, $yy, $mm, $dd );
}

=item $form->format_date($date);

Returns $date converted from 'yyyy-mm-dd' format to the format specified by
$form->{db_dateformat}.  If the supplied date does not match /^\d{4}\D/,
return the supplied date.

This function takes a four digit year and returns the date with a four digit
year.

=cut

sub format_date {

    # takes an iso date in, and converts it to the date for printing
    my ( $self, $date ) = @_;
    my $datestring;
    if ( $date =~ /^\d{4}\D/ ) {    # is an ISO date
        $datestring = $self->{db_dateformat};
        my ( $yyyy, $mm, $dd ) = split( /\W/, $date );
        $datestring =~ s/y+/$yyyy/;
        $datestring =~ s/mm/$mm/;
        $datestring =~ s/dd/$dd/;
    }
    else {                          # return date
        $datestring = $date;
    }
    $datestring;
}

=item $form->from_to($yyyy, $mm[, $interval]);

Returns the date $yyyy-$mm-01 and the the last day of the month interval - 1
months from then in the form ($form->format_date(fromdate),
$form->format_date(later)).  If $interval is false but defined, the later date
is the current date.

This function dies horribly when $mm + $interval > 24

=cut

sub from_to {

    my ( $self, $yyyy, $mm, $interval ) = @_;

    my @t;
    my $dd       = 1;
    my $fromdate = "$yyyy-${mm}-01";
    my $bd       = 1;

    if ( defined $interval ) {

        if ( $interval == 12 ) {
            $yyyy++;
        }
        else {

            if ( ( $mm += $interval ) > 12 ) {
                $mm -= 12;
                $yyyy++;
            }

            if ( $interval == 0 ) {
                @t    = localtime(time);
                $dd   = $t[3];
                $mm   = $t[4] + 1;
                $yyyy = $t[5] + 1900;
                $bd   = 0;
            }
        }

    }
    else {

        if ( ++$mm > 12 ) {
            $mm -= 12;
            $yyyy++;
        }
    }

    $mm--;
    @t = localtime( Time::Local::timelocal( 0, 0, 0, $dd, $mm, $yyyy ) - $bd );

    $t[4]++;
    $t[4] = substr( "0$t[4]", -2 );
    $t[3] = substr( "0$t[3]", -2 );
    $t[5] += 1900;

    ( $self->format_date($fromdate), $self->format_date("$t[5]-$t[4]-$t[3]") );
}

sub audittrail {

    my ( $self, $dbh, $myconfig, $audittrail ) = @_;

    # table, $reference, $formname, $action, $id, $transdate) = @_;

    my $query;
    my $rv;
    my $disconnect;

    if ( !$dbh ) {
        $dbh = $self->{dbh};
    }

    # if we have an id add audittrail, otherwise get a new timestamp

    my @queryargs;

    if ( $audittrail->{id} ) {

        $query = qq|
			SELECT value FROM defaults 
			 WHERE setting_key = 'audittrail'|;

        if ( $dbh->selectrow_array($query) ) {

            my ( $null, $employee_id ) = $self->get_employee($dbh);

            if ( $self->{audittrail} && !$myconfig ) {

                chop $self->{audittrail};

                my @a = split /\|/, $self->{audittrail};
                my %newtrail = ();
                my $key;
                my $i;
                my @flds = qw(tablename reference formname action transdate);

                # put into hash and remove dups
                while (@a) {
                    $key = "$a[2]$a[3]";
                    $i   = 0;
                    $newtrail{$key} = { map { $_ => $a[ $i++ ] } @flds };
                    splice @a, 0, 5;
                }

                $query = qq|
					INSERT INTO audittrail 
						(trans_id, tablename, reference,
						formname, action, transdate, 
						employee_id)
					VALUES (?, ?, ?, ?, ?, ?, ?)|;

                my $sth = $dbh->prepare($query) || $self->dberror($query);

                foreach $key (
                    sort {
                        $newtrail{$a}{transdate} cmp $newtrail{$b}{transdate}
                    } keys %newtrail
                  )
                {

                    $i = 2;
                    $sth->bind_param( 1, $audittrail->{id} );

                    for (@flds) {
                        $sth->bind_param( $i++, $newtrail{$key}{$_} );
                    }
                    $sth->bind_param( $i++, $employee_id );
                    $sth->execute() || $self->dberror($query);
                    $sth->finish;
                }
            }

            if ( $audittrail->{transdate} ) {

                $query = qq|
					INSERT INTO audittrail (
						trans_id, tablename, reference,
						formname, action, employee_id, 
						transdate)
					VALUES (?, ?, ?, ?, ?, ?, ?)|;
                @queryargs = (
                    $audittrail->{id},        $audittrail->{tablename},
                    $audittrail->{reference}, $audittrail->{formname},
                    $audittrail->{action},    $employee_id,
                    $audittrail->{transdate}
                );
            }
            else {
                $query = qq|
					INSERT INTO audittrail 
						(trans_id, tablename, reference,
						formname, action, employee_id)
					VALUES (?, ?, ?, ?, ?, ?)|;
                @queryargs = (
                    $audittrail->{id},        $audittrail->{tablename},
                    $audittrail->{reference}, $audittrail->{formname},
                    $audittrail->{action},    $employee_id,
                );
            }

            $sth = $dbh->prepare($query);
            $sth->execute(@queryargs) || $self->dberror($query);
        }

    }
    else {

        $query = qq|SELECT current_timestamp|;
        my ($timestamp) = $dbh->selectrow_array($query);

        $rv =
"$audittrail->{tablename}|$audittrail->{reference}|$audittrail->{formname}|$audittrail->{action}|$timestamp|";
    }

    $rv;
}

1;

=back