#!/usr/bin/perl

# script to administer the systempref table
# written 20/02/2002 by paul.poulain@free.fr
# This software is placed under the gnu General Public License, v2 (http://www.gnu.org/licenses/gpl.html)

# Copyright 2000-2002 Katipo Communications
#
# This file is part of Koha.
#
# Koha 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.
#
# Koha 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 Koha; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

=head1 systempreferences.pl

ALSO :
 this script use an $op to know what to do.
 if $op is empty or none of the above values,
    - the default screen is build (with all records, or filtered datas).
    - the   user can clic on add, modify or delete record.
 if $op=add_form
    - if primkey exists, this is a modification,so we read the $primkey record
    - builds the add/modify form
 if $op=add_validate
    - the user has just send datas, so we create/modify the record
 if $op=delete_form
    - we show the record having primkey=$primkey and ask for deletion validation form
 if $op=delete_confirm
    - we delete the record having primkey=$primkey

=cut

use strict;
use warnings;

use CGI;
use MIME::Base64;
use C4::Auth;
use C4::Context;
use C4::Koha;
use C4::Languages qw(getTranslatedLanguages);
use C4::ClassSource;
use C4::Log;
use C4::Output;
use YAML::Syck qw( Dump LoadFile );


# use Smart::Comments;

# FIXME, shouldnt we store this stuff in the systempreferences table?

# FIXME: This uses hash in a backwards way.  What we really want is:
#       $tabsysprefs{key} = $array_ref;
#               like
#       $tabsysprefs{Cataloguing} = [qw(autoBarcode ISBD marc ...)];
#
#   Because some things *should* be on more than one tab.
#   And the tabname is the unique part (the key).

my %tabsysprefs;

# Acquisitions
    $tabsysprefs{gist}="Acquisitions";
    $tabsysprefs{emailPurchaseSuggestions}="Acquisitions";
    $tabsysprefs{RenewSerialAddsSuggestion}="Acquisitions";
    $tabsysprefs{AcqCreateItem}="Acquisitions";
    $tabsysprefs{OrderPdfFormat}="Acquisitions";
    $tabsysprefs{CurrencyFormat}="Acquisitions";

# Admin
$tabsysprefs{singleBranchMode}      = "Admin";
$tabsysprefs{staffClientBaseURL}    = "Admin";
$tabsysprefs{Version}               = "Admin";
$tabsysprefs{OpacMaintenance}       = "Admin";
$tabsysprefs{FrameworksLoaded}      = "Admin";
$tabsysprefs{delimiter}             = "Admin";
$tabsysprefs{IndependantBranches}   = "Admin";
$tabsysprefs{insecure}              = "Admin";
$tabsysprefs{KohaAdmin}             = "Admin";
$tabsysprefs{KohaAdminEmailAddress} = "Admin";
$tabsysprefs{timeout}               = "Admin";
$tabsysprefs{Intranet_includes}     = "Admin";
$tabsysprefs{AutoLocation}          = "Admin";
$tabsysprefs{DebugLevel}            = "Admin";
$tabsysprefs{SessionStorage}        = "Admin";

# This script is depricated so all of these prefs are lumped here to avoid their being displayed in the local use prefs tab

$tabsysprefs{noItemTypeImages}      = "Admin";
$tabsysprefs{OPACBaseURL}           = "Admin";
$tabsysprefs{AnonymousPatron}       = "Admin";
$tabsysprefs{casAuthentication}     = "Admin";
$tabsysprefs{casLogout}             = "Admin";
$tabsysprefs{casServerUrl}          = "Admin";
$tabsysprefs{Disable_Dictionary}    = "Admin";
$tabsysprefs{EnableOpacSearchHistory}   = "Admin";
$tabsysprefs{Intranetbookbag}       = "Admin";
$tabsysprefs{maxitemsinSearchResults}   = "Admin";
$tabsysprefs{noOPACUserLogin}       = "Admin";
$tabsysprefs{'OAI-PMH:ConfFile'}    = "Admin";
$tabsysprefs{OpacAddMastheadLibraryPulldown}    = "Admin";
$tabsysprefs{opaclargeimage}        = "Admin";
$tabsysprefs{OPACXSLTDetailsDisplay}    = "Admin";
$tabsysprefs{OPACXSLTResultsDisplay}    = "Admin";
$tabsysprefs{PDFFontType}           = "Admin";
$tabsysprefs{PrintNoticesMaxLines}  = "Admin";
$tabsysprefs{ReservesControlBranch} = "Admin";
$tabsysprefs{ResultsDisplay}        = "Admin";
$tabsysprefs{NoReturnSetLost}       = "Admin";
$tabsysprefs{SearchURL}             = "Admin";
$tabsysprefs{ShowPictures}          = "Admin";
$tabsysprefs{soundon}               = "Admin";
$tabsysprefs{SpineLabelShowPrintOnBibDetails}   = "Admin";
$tabsysprefs{WebBasedSelfCheckHeader}           = "Admin";
$tabsysprefs{WebBasedSelfCheckTimeout}          = "Admin";

# Authorities
$tabsysprefs{authoritysep}          = "Authorities";
$tabsysprefs{AuthDisplayHierarchy}  = "Authorities";
$tabsysprefs{dontmerge}             = "Authorities";
$tabsysprefs{BiblioAddsAuthorities} = "Authorities";

# Cataloguing
$tabsysprefs{advancedMARCeditor}          = "Cataloging";
$tabsysprefs{autoBarcode}                 = "Cataloging";
$tabsysprefs{hide_marc}                   = "Cataloging";
$tabsysprefs{IntranetBiblioDefaultView}   = "Cataloging";
$tabsysprefs{ISBD}                        = "Cataloging";
$tabsysprefs{itemcallnumber}              = "Cataloging";
$tabsysprefs{LabelMARCView}               = "Cataloging";
$tabsysprefs{marcflavour}                 = "Cataloging";
$tabsysprefs{MARCOrgCode}                 = "Cataloging";
$tabsysprefs{z3950AuthorAuthFields}       = "Cataloging";
$tabsysprefs{z3950NormalizeAuthor}        = "Cataloging";
$tabsysprefs{Stemming}                    = "Cataloging";
$tabsysprefs{WeightFields}                = "Cataloging";
$tabsysprefs{NoZebra}                     = "Cataloging";
$tabsysprefs{NoZebraIndexes}              = "Cataloging";
$tabsysprefs{ReceiveBackIssues}           = "Cataloging";
$tabsysprefs{DefaultClassificationSource} = "Cataloging";
$tabsysprefs{RoutingSerials}              = "Cataloging";
$tabsysprefs{'item-level_itypes'}         = "Cataloging";
$tabsysprefs{OpacSuppression}             = "Cataloging";
$tabsysprefs{SpineLabelFormat}            = "Cataloging";
$tabsysprefs{SpineLabelAutoPrint}         = "Cataloging";

# Circulation
$tabsysprefs{maxoutstanding}                 = "Circulation";
$tabsysprefs{maxreserves}                    = "Circulation";
$tabsysprefs{noissuescharge}                 = "Circulation";
$tabsysprefs{IssuingInProcess}               = "Circulation";
$tabsysprefs{patronimages}                   = "Circulation";
$tabsysprefs{printcirculationslips}          = "Circulation";
$tabsysprefs{ReturnBeforeExpiry}             = "Circulation";
$tabsysprefs{SpecifyDueDate}                 = "Circulation";
$tabsysprefs{AutomaticItemReturn}            = "Circulation";
$tabsysprefs{ReservesMaxPickUpDelay}         = "Circulation";
$tabsysprefs{TransfersMaxDaysWarning}        = "Circulation";
$tabsysprefs{useDaysMode}                    = "Circulation";
$tabsysprefs{ReservesNeedReturns}            = "Circulation";
$tabsysprefs{CircAutocompl}                  = "Circulation";
$tabsysprefs{AllowRenewalLimitOverride}      = "Circulation";
$tabsysprefs{canreservefromotherbranches}    = "Circulation";
$tabsysprefs{finesMode}                      = "Circulation";
$tabsysprefs{numReturnedItemsToShow}         = "Circulation";
$tabsysprefs{emailLibrarianWhenHoldIsPlaced} = "Circulation";
$tabsysprefs{itemBarcodeInputFilter}         = "Circulation";
$tabsysprefs{WebBasedSelfCheck}              = "Circulation";
$tabsysprefs{ShowPatronImageInWebBasedSelfCheck} = "Circulation";
$tabsysprefs{CircControl}                    = "Circulation";
$tabsysprefs{finesCalendar}                  = "Circulation";
$tabsysprefs{previousIssuesDefaultSortOrder} = "Circulation";
$tabsysprefs{todaysIssuesDefaultSortOrder}   = "Circulation";
$tabsysprefs{HomeOrHoldingBranch}            = "Circulation";
$tabsysprefs{HomeOrHoldingBranchReturn}      = "Circulation";
$tabsysprefs{RandomizeHoldsQueueWeight}      = "Circulation";
$tabsysprefs{StaticHoldsQueueWeight}         = "Circulation";
$tabsysprefs{AllowOnShelfHolds}              = "Circulation";
$tabsysprefs{AllowHoldsOnDamagedItems}       = "Circulation";
$tabsysprefs{UseBranchTransferLimits}        = "Circulation";
$tabsysprefs{AllowHoldPolicyOverride}        = "Circulation";
$tabsysprefs{BranchTransferLimitsType}       = "Circulation";
$tabsysprefs{AllowNotForLoanOverride}        = "Circulation";
$tabsysprefs{RenewalPeriodBase}              = "Circulation";
$tabsysprefs{FilterBeforeOverdueReport}      = "Circulation";
$tabsysprefs{AllowHoldDateInFuture}          = "Circulation";
$tabsysprefs{OPACFineNoRenewals}             = "Circulation";
$tabsysprefs{InProcessingToShelvingCart}     = "Circulation";
$tabsysprefs{NewItemsDefaultLocation}        = "Circulation";
$tabsysprefs{ReturnToShelvingCart}           = "Circulation";
$tabsysprefs{DisplayClearScreenButton}       = "Circulation";
$tabsysprefs{AllowAllMessageDeletion}        = "Circulation";
$tabsysprefs{OverdueNoticeBcc}               = "Circulation";
$tabsysprefs{OverduesBlockCirc}              = "Circulation";


# Staff Client
$tabsysprefs{template}                = "StaffClient";
$tabsysprefs{intranetstylesheet}      = "StaffClient";
$tabsysprefs{IntranetNav}             = "StaffClient";
$tabsysprefs{intranetcolorstylesheet} = "StaffClient";
$tabsysprefs{intranetuserjs}          = "StaffClient";
$tabsysprefs{yuipath}                 = "StaffClient";
$tabsysprefs{IntranetmainUserblock}   = "StaffClient";
$tabsysprefs{viewMARC}                = "StaffClient";
$tabsysprefs{viewLabeledMARC}         = "StaffClient";
$tabsysprefs{viewISBD}                = "StaffClient";

# Patrons
$tabsysprefs{autoMemberNum}                = "Patrons";
$tabsysprefs{checkdigit}                   = "Patrons";
$tabsysprefs{intranetreadinghistory}       = "Patrons";
$tabsysprefs{NotifyBorrowerDeparture}      = "Patrons";
$tabsysprefs{memberofinstitution}          = "Patrons";
$tabsysprefs{BorrowerMandatoryField}       = "Patrons";
$tabsysprefs{borrowerRelationship}         = "Patrons";
$tabsysprefs{BorrowersTitles}              = "Patrons";
$tabsysprefs{patronimages}                 = "Patrons";
$tabsysprefs{minPasswordLength}            = "Patrons";
$tabsysprefs{uppercasesurnames}            = "Patrons";
$tabsysprefs{MaxFine}                      = "Patrons";
$tabsysprefs{NotifyBorrowerDeparture}      = "Patrons";
$tabsysprefs{AddPatronLists}               = "Patrons";
$tabsysprefs{PatronsPerPage}               = "Patrons";
$tabsysprefs{ExtendedPatronAttributes}     = "Patrons";
$tabsysprefs{AutoEmailOpacUser}            = "Patrons";
$tabsysprefs{AutoEmailPrimaryAddress}      = "Patrons";
$tabsysprefs{EnhancedMessagingPreferences} = "Patrons";
$tabsysprefs{'SMSSendDriver'}              = 'Patrons';
$tabsysprefs{HidePatronName}               = "Patrons";


# I18N/L10N
$tabsysprefs{dateformat}    = "I18N/L10N";
$tabsysprefs{opaclanguages} = "I18N/L10N";
$tabsysprefs{opaclanguagesdisplay} = "I18N/L10N";
$tabsysprefs{language}      = "I18N/L10N";

# Searching
$tabsysprefs{defaultSortField}        = "Searching";
$tabsysprefs{defaultSortOrder}        = "Searching";
$tabsysprefs{numSearchResults}        = "Searching";
$tabsysprefs{OPACdefaultSortField}    = "Searching";
$tabsysprefs{OPACdefaultSortOrder}    = "Searching";
$tabsysprefs{OPACItemsResultsDisplay} = "Searching";
$tabsysprefs{OPACnumSearchResults}    = "Searching";
$tabsysprefs{QueryFuzzy}              = "Searching";
$tabsysprefs{QueryStemming}           = "Searching";
$tabsysprefs{QueryWeightFields}       = "Searching";
$tabsysprefs{expandedSearchOption}    = "Searching";
$tabsysprefs{QueryAutoTruncate}       = "Searching";
$tabsysprefs{QueryRemoveStopwords}    = "Searching";
$tabsysprefs{AdvancedSearchTypes}     = "Searching";
$tabsysprefs{DisplayMultiPlaceHold}   = "Searching";

# EnhancedContent
$tabsysprefs{AmazonEnabled}          = "EnhancedContent";
$tabsysprefs{OPACAmazonEnabled}      = "EnhancedContent";
$tabsysprefs{AmazonCoverImages}      = "EnhancedContent";
$tabsysprefs{OPACAmazonCoverImages}  = "EnhancedContent";
$tabsysprefs{AWSAccessKeyID}         = "EnhancedContent";
$tabsysprefs{AWSPrivateKey}          = "EnhancedContent";
$tabsysprefs{AmazonLocale}           = "EnhancedContent";
$tabsysprefs{AmazonAssocTag}         = "EnhancedContent";
$tabsysprefs{AmazonSimilarItems}     = "EnhancedContent";
$tabsysprefs{OPACAmazonSimilarItems} = "EnhancedContent";
$tabsysprefs{AmazonReviews}          = "EnhancedContent";
$tabsysprefs{OPACAmazonReviews}      = "EnhancedContent";

# Babelthèque
$tabsysprefs{Babeltheque}            = "EnhancedContent";

# Baker & Taylor
$tabsysprefs{BakerTaylorBookstoreURL} = 'EnhancedContent';
$tabsysprefs{BakerTaylorEnabled}      = 'EnhancedContent';
$tabsysprefs{BakerTaylorPassword}     = 'EnhancedContent';
$tabsysprefs{BakerTaylorUsername}     = 'EnhancedContent';

# Library Thing for Libraries
$tabsysprefs{LibraryThingForLibrariesID} = "EnhancedContent";
$tabsysprefs{LibraryThingForLibrariesEnabled} = "EnhancedContent";
$tabsysprefs{LibraryThingForLibrariesTabbedView} = "EnhancedContent";

# Syndetics
$tabsysprefs{SyndeticsClientCode}     = 'EnhancedContent';
$tabsysprefs{SyndeticsEnabled}        = 'EnhancedContent';
$tabsysprefs{SyndeticsCoverImages}    = 'EnhancedContent';
$tabsysprefs{SyndeticsTOC}            = 'EnhancedContent';
$tabsysprefs{SyndeticsSummary}        = 'EnhancedContent';
$tabsysprefs{SyndeticsEditions}       = 'EnhancedContent';
$tabsysprefs{SyndeticsExcerpt}        = 'EnhancedContent';
$tabsysprefs{SyndeticsReviews}        = 'EnhancedContent';
$tabsysprefs{SyndeticsAuthorNotes}    = 'EnhancedContent';
$tabsysprefs{SyndeticsAwards}         = 'EnhancedContent';
$tabsysprefs{SyndeticsSeries}         = 'EnhancedContent';
$tabsysprefs{SyndeticsCoverImageSize} = 'EnhancedContent';


# FRBR
$tabsysprefs{FRBRizeEditions}     = "EnhancedContent";
$tabsysprefs{XISBN}               = "EnhancedContent";
$tabsysprefs{OCLCAffiliateID}     = "EnhancedContent";
$tabsysprefs{XISBNDailyLimit}     = "EnhancedContent";
$tabsysprefs{ThingISBN}           = "EnhancedContent";
$tabsysprefs{OPACFRBRizeEditions} = "EnhancedContent";

# Tags
$tabsysprefs{TagsEnabled}            = 'EnhancedContent';
$tabsysprefs{TagsExternalDictionary} = 'EnhancedContent';
$tabsysprefs{TagsInputOnDetail}      = 'EnhancedContent';
$tabsysprefs{TagsInputOnList}        = 'EnhancedContent';
$tabsysprefs{TagsShowOnDetail}       = 'EnhancedContent';
$tabsysprefs{TagsShowOnList}         = 'EnhancedContent';
$tabsysprefs{TagsModeration}         = 'EnhancedContent';
$tabsysprefs{GoogleJackets}          = 'EnhancedContent';
$tabsysprefs{AuthorisedValueImages}  = "EnhancedContent";

# OPAC
$tabsysprefs{BiblioDefaultView}          = "OPAC";
$tabsysprefs{LibraryName}                = "OPAC";
$tabsysprefs{opaccolorstylesheet}        = "OPAC";
$tabsysprefs{opaccredits}                = "OPAC";
$tabsysprefs{opaclayoutstylesheet}       = "OPAC";
$tabsysprefs{OpacNav}                    = "OPAC";
$tabsysprefs{opacsmallimage}             = "OPAC";
$tabsysprefs{opacstylesheet}             = "OPAC";
$tabsysprefs{opacthemes}                 = "OPAC";
$tabsysprefs{opacuserjs}                 = "OPAC";
$tabsysprefs{opacheader}                 = "OPAC";
$tabsysprefs{hideBiblioNumber}           = "OPAC";
$tabsysprefs{OpacMainUserBlock}          = "OPAC";
$tabsysprefs{OPACURLOpenInNewWindow}     = "OPAC";
$tabsysprefs{OPACUserCSS}                = "OPAC";
$tabsysprefs{OPACHighlightedWords}       = "OPAC";
$tabsysprefs{OPACViewOthersSuggestions}  = "OPAC";
$tabsysprefs{URLLinkText}                = "OPAC";
$tabsysprefs{OPACSearchForTitleIn}       = "OPAC";
$tabsysprefs{OPACShelfBrowser}           = "OPAC";
$tabsysprefs{OPACDisplayRequestPriority} = "OPAC";
$tabsysprefs{OPACAllowHoldDateInFuture}  = "OPAC";
$tabsysprefs{OPACPatronDetails}  = "OPAC";
$tabsysprefs{OPACFinesTab}  = "OPAC";
$tabsysprefs{DisplayOPACiconsXSLT}	 = "OPAC";
$tabsysprefs{AutoSelfCheckAllowed}	 = "OPAC";
$tabsysprefs{AutoSelfCheckID}		 = "OPAC";
$tabsysprefs{AutoSelfCheckPass}		 = "OPAC";

# OPAC
$tabsysprefs{SearchMyLibraryFirst} = "OPAC";
$tabsysprefs{hidelostitems}        = "OPAC";
$tabsysprefs{opacbookbag}          = "OPAC";
$tabsysprefs{OpacPasswordChange}   = "OPAC";
$tabsysprefs{opacreadinghistory}   = "OPAC";
$tabsysprefs{virtualshelves}       = "OPAC";
$tabsysprefs{RequestOnOpac}        = "OPAC";
$tabsysprefs{reviewson}            = "OPAC";
$tabsysprefs{OpacTopissues}        = "OPAC";
$tabsysprefs{OpacAuthorities}      = "OPAC";
$tabsysprefs{OpacCloud}            = "OPAC";
$tabsysprefs{opacuserlogin}        = "OPAC";
$tabsysprefs{AnonSuggestions}      = "OPAC";
$tabsysprefs{suggestion}           = "OPAC";
$tabsysprefs{OpacTopissue}         = "OPAC";
$tabsysprefs{OpacBrowser}          = "OPAC";
$tabsysprefs{OpacRenewalAllowed}   = "OPAC";
$tabsysprefs{OPACItemHolds}        = "OPAC";
$tabsysprefs{OPACGroupResults}     = "OPAC";
$tabsysprefs{XSLTDetailsDisplay}   = "OPAC";
$tabsysprefs{XSLTResultsDisplay}   = "OPAC";
$tabsysprefs{OPACShowCheckoutName}   = "OPAC";
$tabsysprefs{AllowPurchaseSuggestionBranchChoice}   = "OPAC";

# Serials
$tabsysprefs{RoutingListAddReserves}  	   = "Serials";
$tabsysprefs{OPACSerialIssueDisplayCount}  = "Serials";
$tabsysprefs{StaffSerialIssueDisplayCount} = "Serials";
$tabsysprefs{RenewSerialAddsSuggestion}    = "Serials";
$tabsysprefs{SubscriptionHistory}          = "Serials";

# LOGFeatures
$tabsysprefs{CataloguingLog}  = "Logs";
$tabsysprefs{BorrowersLog}    = "Logs";
$tabsysprefs{SubscriptionLog} = "Logs";
$tabsysprefs{IssueLog}        = "Logs";
$tabsysprefs{ReturnLog}       = "Logs";
$tabsysprefs{LetterLog}       = "Logs";
$tabsysprefs{FinesLog}        = "Logs";

# OAI-PMH variables
$tabsysprefs{'OAI-PMH'}           = "OAI-PMH";
$tabsysprefs{'OAI-PMH:archiveID'} = "OAI-PMH";
$tabsysprefs{'OAI-PMH:MaxCount'}  = "OAI-PMH";

# ILS-DI variables
$tabsysprefs{'ILS-DI'} = "ILS-DI";
$tabsysprefs{'ILS-DI:AuthorizedIPs'}    = "Admin";

# Creator variables

$tabsysprefs{'ImageLimit'} = "Creators";

sub StringSearch {
    my ( $searchstring, $type ) = @_;
    my $dbh = C4::Context->dbh;
    $searchstring =~ s/\'/\\\'/g;
    my @data = split( ' ', $searchstring );
    my $count = @data;
    my @results;
    my $cnt = 0;
    my $sth;

    # used for doing a plain-old sys-pref search
    if ( $type && $type ne 'all' ) {
        foreach my $syspref ( sort { lc $a cmp lc $b } keys %tabsysprefs ) {
            if ( $tabsysprefs{$syspref} eq $type ) {
                my $sth = $dbh->prepare("Select variable,value,explanation,type,options from systempreferences where (variable like ?) order by variable");
                $sth->execute($syspref);
                while ( my $data = $sth->fetchrow_hashref ) {
                    $data->{shortvalue} = $data->{value};
                    $data->{shortvalue} = substr( $data->{value}, 0, 60 ) . "..." if defined( $data->{value} ) and length( $data->{value} ) > 60;
                    push( @results, $data );
                    $cnt++;
                }
                $sth->finish;
            }
        }
    } else {
        my $sth;

        if ( $type and $type eq 'all' ) {
            $sth = $dbh->prepare( "
            SELECT *
              FROM systempreferences
              WHERE variable LIKE ? OR explanation LIKE ?
              ORDER BY VARIABLE" );
            $sth->execute( "%$searchstring%", "%$searchstring%" );
        } else {
            my $strsth = "Select variable,value,explanation,type,options from systempreferences where variable in (";
            my $first = 1;
            for my $name ( get_local_prefs() ) {
                $strsth .= ',' unless $first;
                $strsth .= "'$name'";
                $first = 0;
            }
            $strsth .= ") order by variable";
            $sth = $dbh->prepare($strsth);
            $sth->execute();
        }

        while ( my $data = $sth->fetchrow_hashref ) {
            $data->{shortvalue} = $data->{value};
            $data->{shortvalue} = substr( $data->{value}, 0, 60 ) . "..." if length( $data->{value} ) > 60;
            push( @results, $data );
            $cnt++;
        }

        $sth->finish;
    }
    return ( $cnt, \@results );
}

sub GetPrefParams {
    my $data   = shift;
    my $params = $data;
    my @options;

    if ( defined $data->{'options'} ) {
        foreach my $option ( split( /\|/, $data->{'options'} ) ) {
            my $selected = '0';
            defined( $data->{'value'} ) and $option eq $data->{'value'} and $selected = 1;
            push @options, { option => $option, selected => $selected };
        }
    }

    $params->{'prefoptions'} = $data->{'options'};

    if ( not defined( $data->{'type'} ) ) {
        $params->{'type_free'} = 1;
        $params->{'fieldlength'} = ( defined( $data->{'options'} ) and $data->{'options'} and $data->{'options'} > 0 );
    } elsif ( $data->{'type'} eq 'Upload' ) {
        $params->{'type_upload'} = 1;
    } elsif ( $data->{'type'} eq 'Choice' ) {
        $params->{'type_choice'} = 1;
    } elsif ( $data->{'type'} eq 'YesNo' ) {
        $params->{'type_yesno'} = 1;
        $data->{'value'}        = C4::Context->boolean_preference( $data->{'variable'} );
        if ( defined( $data->{'value'} ) and $data->{'value'} eq '1' ) {
            $params->{'value_yes'} = 1;
        } else {
            $params->{'value_no'} = 1;
        }
    } elsif ( $data->{'type'} eq 'Integer' || $data->{'type'} eq 'Float' ) {
        $params->{'type_free'} = 1;
        $params->{'fieldlength'} = ( defined( $data->{'options'} ) and $data->{'options'} and $data->{'options'} > 0 ) ? $data->{'options'} : 10;
    } elsif ( $data->{'type'} eq 'Textarea' ) {
        $params->{'type_textarea'} = 1;
        $data->{options} =~ /(.*)\|(.*)/;
        $params->{'cols'} = $1;
        $params->{'rows'} = $2;
    } elsif ( $data->{'type'} eq 'Themes' ) {
        $params->{'type_choice'} = 1;
        my $type = '';
        ( $data->{'variable'} =~ m#opac#i ) ? ( $type = 'opac' ) : ( $type = 'intranet' );
        @options = ();
        my $currently_selected_themes;
        my $counter = 0;
        foreach my $theme ( split /\s+/, $data->{'value'} ) {
            push @options, { option => $theme, counter => $counter };
            $currently_selected_themes->{$theme} = 1;
            $counter++;
        }
        foreach my $theme ( getallthemes($type) ) {
            my $selected = '0';
            next if $currently_selected_themes->{$theme};
            push @options, { option => $theme, counter => $counter };
            $counter++;
        }
    } elsif ( $data->{'type'} eq 'ClassSources' ) {
        $params->{'type_choice'} = 1;
        my $type = '';
        @options = ();
        my $sources = GetClassSources();
        my $counter = 0;
        foreach my $cn_source ( sort keys %$sources ) {
            if ( $cn_source eq $data->{'value'} ) {
                push @options, { option => $cn_source, counter => $counter, selected => 1 };
            } else {
                push @options, { option => $cn_source, counter => $counter };
            }
            $counter++;
        }
    } elsif ( $data->{'type'} eq 'Languages' ) {
        my $currently_selected_languages;
        foreach my $language ( split /\s+/, $data->{'value'} ) {
            $currently_selected_languages->{$language} = 1;
        }

        # current language
        my $lang = $params->{'lang'};
        my $theme;
        my $interface;
        if ( $data->{'variable'} =~ /opac/ ) {

            # this is the OPAC
            $interface = 'opac';
            $theme     = C4::Context->preference('opacthemes');
        } else {

            # this is the staff client
            $interface = 'intranet';
            $theme     = C4::Context->preference('template');
        }
        my $languages_loop = getTranslatedLanguages( $interface, $theme, $lang, $currently_selected_languages );

        $params->{'languages_loop'}    = $languages_loop;
        $params->{'type_langselector'} = 1;
    } else {
        $params->{'type_free'} = 1;
        $params->{'fieldlength'} = ( defined( $data->{'options'} ) and $data->{'options'} and $data->{'options'} > 0 ) ? $data->{'options'} : 30;
    }

    if ( $params->{'type_choice'} || $params->{'type_free'} || $params->{'type_yesno'} ) {
        $params->{'oneline'} = 1;
    }

    $params->{'preftype'} = $data->{'type'};
    $params->{'options'}  = \@options;

    return $params;
}

my $input       = new CGI;
my $searchfield = $input->param('searchfield') || '';
my $Tvalue      = $input->param('Tvalue');
my $offset      = $input->param('offset') || 0;
my $script_name = "/cgi-bin/koha/admin/systempreferences.pl";

my ( $template, $borrowernumber, $cookie ) = get_template_and_user(
    {   template_name   => "admin/systempreferences.tmpl",
        query           => $input,
        type            => "intranet",
        authnotrequired => 0,
        flagsrequired   => { parameters => 1 },
        debug           => 1,
    }
);
my $pagesize = 100;
my $op = $input->param('op') || '';
$searchfield =~ s/\,//g;

if ($op) {
    $template->param(
        script_name => $script_name,
        $op         => 1
    );    # we show only the TMPL_VAR names $op
} else {
    $template->param(
        script_name => $script_name,
        else        => 1
    );    # we show only the TMPL_VAR names $op
}

if ( $op eq 'update_and_reedit' ) {
    foreach ( $input->param ) {
    }
    my $value = '';
    if ( my $currentorder = $input->param('currentorder') ) {
        my @currentorder = split /\|/, $currentorder;
        my $orderchanged = 0;
        foreach my $param ( $input->param ) {
            if ( $param =~ m#up-(\d+).x# ) {
                my $temp = $currentorder[$1];
                $currentorder[$1]       = $currentorder[ $1 - 1 ];
                $currentorder[ $1 - 1 ] = $temp;
                $orderchanged           = 1;
                last;
            } elsif ( $param =~ m#down-(\d+).x# ) {
                my $temp = $currentorder[$1];
                $currentorder[$1]       = $currentorder[ $1 + 1 ];
                $currentorder[ $1 + 1 ] = $temp;
                $orderchanged           = 1;
                last;
            }
        }
        $value = join ' ', @currentorder;
        if ($orderchanged) {
            $op = 'add_form';
            $template->param(
                script_name => $script_name,
                $op         => 1
            );    # we show only the TMPL_VAR names $op
        } else {
            $op          = '';
            $searchfield = '';
            $template->param(
                script_name => $script_name,
                else        => 1
            );    # we show only the TMPL_VAR names $op
        }
    }
    my $dbh   = C4::Context->dbh;
    my $query = "select * from systempreferences where variable=?";
    my $sth   = $dbh->prepare($query);
    $sth->execute( $input->param('variable') );
    if ( $sth->rows ) {
        unless ( C4::Context->config('demo') ) {
            my $sth = $dbh->prepare("update systempreferences set value=?,explanation=?,type=?,options=? where variable=?");
            $sth->execute( $value, $input->param('explanation'), $input->param('variable'), $input->param('preftype'), $input->param('prefoptions') );
            $sth->finish;
            logaction( 'SYSTEMPREFERENCE', 'MODIFY', undef, $input->param('variable') . " | " . $value );
        }
    } else {
        unless ( C4::Context->config('demo') ) {
            my $sth = $dbh->prepare("insert into systempreferences (variable,value,explanation) values (?,?,?,?,?)");
            $sth->execute( $input->param('variable'), $input->param('value'), $input->param('explanation'), $input->param('preftype'), $input->param('prefoptions') );
            $sth->finish;
            logaction( 'SYSTEMPREFERENCE', 'ADD', undef, $input->param('variable') . " | " . $input->param('value') );
        }
    }
    $sth->finish;

}

################## ADD_FORM ##################################
# called by default. Used to create form to add or  modify a record

if ( $op eq 'add_form' ) {

    #---- if primkey exists, it's a modify action, so read values to modify...
    my $data;
    if ($searchfield) {
        my $dbh = C4::Context->dbh;
        my $sth = $dbh->prepare("select variable,value,explanation,type,options from systempreferences where variable=?");
        $sth->execute($searchfield);
        $data = $sth->fetchrow_hashref;
        $sth->finish;
        $template->param( modify => 1 );

        # save tab to return to if user cancels edit
        $template->param( return_tab => $tabsysprefs{$searchfield} );
    }

    $data->{'lang'} = $template->param('lang');

    $template->param( GetPrefParams($data) );

    $template->param( searchfield => $searchfield );

################## ADD_VALIDATE ##################################
    # called by add_form, used to insert/modify data in DB
} elsif ( $op eq 'add_validate' ) {
    my $dbh = C4::Context->dbh;
    my $sth = $dbh->prepare("select * from systempreferences where variable=?");
    $sth->execute( $input->param('variable') );

    # to handle multiple values
    my $value;

    # handle multiple value strings (separated by ',')
    my $params = $input->Vars;
    if ( defined $params->{'value'} ) {
        my @values = ();
        @values = split( "\0", $params->{'value'} ) if defined( $params->{'value'} );
        if (@values) {
            $value = "";
            for my $vl (@values) {
                $value .= "$vl,";
            }
            $value =~ s/,$//;
        } else {
            $value = $params->{'value'};
        }
    }

    if ( $input->param('preftype') eq 'Upload' ) {
        my $lgtfh = $input->upload('value');
        $value = join '', <$lgtfh>;
        $value = encode_base64($value);
    }

    if ( $sth->rows ) {
        unless ( C4::Context->config('demo') ) {
            my $sth = $dbh->prepare("update systempreferences set value=?,explanation=?,type=?,options=? where variable=?");
            $sth->execute( $value, $input->param('explanation'), $input->param('preftype'), $input->param('prefoptions'), $input->param('variable') );
            $sth->finish;
            logaction( 'SYSTEMPREFERENCE', 'MODIFY', undef, $input->param('variable') . " | " . $value );
        }
    } else {
        unless ( C4::Context->config('demo') ) {
            my $sth = $dbh->prepare("insert into systempreferences (variable,value,explanation,type,options) values (?,?,?,?,?)");
            $sth->execute( $input->param('variable'), $value, $input->param('explanation'), $input->param('preftype'), $input->param('prefoptions') );
            $sth->finish;
            logaction( 'SYSTEMPREFERENCE', 'ADD', undef, $input->param('variable') . " | " . $value );
        }
    }
    $sth->finish;
    print "Content-Type: text/html\n\n<META HTTP-EQUIV=Refresh CONTENT=\"0; URL=systempreferences.pl?tab=" . $tabsysprefs{ $input->param('variable') } . "\"></html>";
    exit;
################## DELETE_CONFIRM ##################################
    # called by default form, used to confirm deletion of data in DB
} elsif ( $op eq 'delete_confirm' ) {
    my $dbh = C4::Context->dbh;
    my $sth = $dbh->prepare("select variable,value,explanation,type,options from systempreferences where variable=?");
    $sth->execute($searchfield);
    my $data = $sth->fetchrow_hashref;
    $sth->finish;
    $template->param(
        searchfield => $searchfield,
        Tvalue      => $data->{'value'},
    );

    # END $OP eq DELETE_CONFIRM
################## DELETE_CONFIRMED ##################################
    # called by delete_confirm, used to effectively confirm deletion of data in DB
} elsif ( $op eq 'delete_confirmed' ) {
    my $dbh = C4::Context->dbh;
    my $sth = $dbh->prepare("delete from systempreferences where variable=?");
    $sth->execute($searchfield);
    my $logstring = $searchfield . " | " . $Tvalue;
    logaction( 'SYSTEMPREFERENCE', 'DELETE', undef, $logstring );
    $sth->finish;

    # END $OP eq DELETE_CONFIRMED
################## DEFAULT ##################################
} else {    # DEFAULT
            #Adding tab management for system preferences
    my $tab = $input->param('tab');
    $template->param( $tab => 1 );
    my ( $count, $results ) = StringSearch( $searchfield, $tab );
    my @loop_data = ();
    for ( my $i = $offset ; $i < ( $offset + $pagesize < $count ? $offset + $pagesize : $count ) ; $i++ ) {
        my $row_data = $results->[$i];
        $row_data->{'lang'} = $template->param('lang');
        $row_data           = GetPrefParams($row_data);                                                         # get a fresh hash for the row data
        $row_data->{edit}   = "$script_name?op=add_form&amp;searchfield=" . $results->[$i]{'variable'};
        $row_data->{delete} = "$script_name?op=delete_confirm&amp;searchfield=" . $results->[$i]{'variable'};
        push( @loop_data, $row_data );
    }
    $tab = ( $tab ? $tab : "local_use" );
    $template->param( loop => \@loop_data, $tab => 1 );
    if ( $offset > 0 ) {
        my $prevpage = $offset - $pagesize;
        $template->param( "<a href=$script_name?offset=" . $prevpage . '&lt;&lt; Prev</a>' );
    }
    if ( $offset + $pagesize < $count ) {
        my $nextpage = $offset + $pagesize;
        $template->param( "a href=$script_name?offset=" . $nextpage . 'Next &gt;&gt;</a>' );
    }
    $template->param( tab => $tab, );
}    #---- END $OP eq DEFAULT
output_html_with_http_headers $input, $cookie, $template->output;


# Return an array containing all preferences defined in current Koha instance
# .pref files.

sub get_prefs_from_files {
    my $context       = C4::Context->new();
    my $path_pref_en  = $context->config('intrahtdocs') .
                        '/prog/en/modules/admin/preferences';
    # Get all .pref file names
    opendir ( my $fh, $path_pref_en );
    my @pref_files = grep { /.pref/ } readdir($fh);
    close $fh;

    my @names = ();
    my $append = sub {
        my $prefs = shift;
        for my $pref ( @$prefs ) {
            for my $element ( @$pref ) {
                if ( ref( $element) eq 'HASH' ) {
                    my $name = $element->{pref};
                    next unless $name;
                    push @names, $name;
                    next;
                }
            }
        }
    };
    for my $file (@pref_files) {
        my $pref = LoadFile( "$path_pref_en/$file" );
        for my $tab ( keys %$pref ) {
            my $content = $pref->{$tab};
            if ( ref($content) eq 'ARRAY' ) {
                $append->($content);
                next;
            }
            for my $section ( keys %$content ) {
                my $syspref = $content->{$section};
                $append->($syspref);
            }
        }
    }
    return @names;
}


# Return an array containg all preferences defined in DB

sub get_prefs_from_db {
    my $dbh = C4::Context->dbh;
    my $sth = $dbh->prepare("SELECT variable FROM systempreferences");
    $sth->execute;
    my @names = ();
    while ( (my $name) = $sth->fetchrow_array ) {
        push @names, $name if $name;
    }
    return @names;
}


# Return an array containing all local preferences: those which are defined in
# DB and not defined in Koha .pref files.

sub get_local_prefs {
    my @prefs_file = get_prefs_from_files();
    my @prefs_db = get_prefs_from_db();

    my %prefs_file = map { $_ => 1 } @prefs_file;
    my @names = ();
    foreach my $name (@prefs_db) {
        push @names, $name  unless $prefs_file{$name};
    }

    return @names;
}