#!/usr/bin/perl

# $Id$

# 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., 59 Temple Place,
# Suite 330, Boston, MA  02111-1307 USA

use strict;
use C4::Auth;
use CGI;
use C4::Context;
use C4::Search;
use C4::Output;
use C4::Koha;
use C4::Branch;
use C4::Interface::CGI::Output;
use Date::Manip;

=head1 NAME

plugin that shows a stats on borrowers

=head1 DESCRIPTION


=over2

=cut

my $input = new CGI;
my $branches = GetBranches();
my $itemtypes = GetItemTypes();

my ($template, $borrowernumber, $cookie)
	= get_template_and_user({template_name => 'opac-topissues.tmpl',
				query => $input,
				type => "opac",
				authnotrequired => 1,
				debug => 1,
				});
my $dbh = C4::Context->dbh;
# Displaying results
my $limit = $input->param('limit') || 10;
my $branch = $input->param('branch');
my $itemtype = $input->param('itemtype');
my $timeLimit = $input->param('timeLimit') || 3;
my $whereclause;
$whereclause .= 'items.homebranch='.$dbh->quote($branch)." AND " if ($branch); 
$whereclause .= 'biblioitems.itemtype='.$dbh->quote($itemtype)." AND " if $itemtype;
$whereclause .= 'TO_DAYS(NOW()) - TO_DAYS(biblio.timestamp) <= '.$timeLimit*30 if $timeLimit;
$whereclause =~ s/ AND $//;
$whereclause = " WHERE ".$whereclause if $whereclause;
my $query = "SELECT biblio.timestamp, biblio.biblionumber, title, 
                author, sum( items.issues ) AS tot, biblioitems.itemtype,
                biblioitems.publishercode,biblioitems.publicationyear,
                itemtypes.description
                FROM biblio
                LEFT JOIN items USING (biblionumber)
                LEFT JOIN biblioitems USING (biblionumber)
                LEFT JOIN itemtypes ON itemtypes.itemtype = biblioitems.itemtype
                $whereclause
                GROUP BY biblio.biblionumber
                ORDER BY tot DESC
                LIMIT $limit
                ";

my $sth = $dbh->prepare($query);
$sth->execute();
my @results;
while (my $line= $sth->fetchrow_hashref) {
    push @results, $line;
}

$template->param(do_it => 1,
                limit => $limit,
                branch => $branches->{$branch}->{branchname},
                itemtype => $itemtypes->{$itemtype}->{description},
                timeLimit => $timeLimit,
                results_loop => \@results,
                );

my $branches = GetBranches;
my @branchloop;
foreach my $thisbranch (keys %$branches) {
        my %row =(value => $thisbranch,
                    branchname => $branches->{$thisbranch}->{'branchname'},
                        );
        push @branchloop, \%row;
}

#doctype
my $itemtypes = GetItemTypes;
my @itemtypeloop;
foreach my $thisitemtype (keys %$itemtypes) {
        my %row =(value => $thisitemtype,
                    description => $itemtypes->{$thisitemtype}->{'description'},
                        );
        push @itemtypeloop, \%row;
}

$template->param(
                branchloop =>\@branchloop,
                itemtypeloop =>\@itemtypeloop,
                );
output_html_with_http_headers $input, $cookie, $template->output;

