#!/usr/bin/perl


# 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 3 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, see <http://www.gnu.org/licenses>.

use strict;
use C4::Auth;
use CGI qw ( -utf8 );
use C4::Context;
use C4::Search;
use C4::Output;
use C4::Koha;
=head1

=cut

sub set_parameters {
    my ($template) = @_;
    return $template;
}

sub calculate {
	my ($parameters) = @_;
	my @results =();
	my $branch = @$parameters[0];
	my $dbh = C4::Context->dbh;
	my $sth;
    if ( C4::Context->preference('item-level_itypes') ) {
        $sth = $dbh->prepare( q|
            SELECT itemtypes.itemtype, description, COUNT(*) AS total
            FROM itemtypes, items
            WHERE items.itype=itemtypes.itemtype
            | . ( $branch ? q| AND items.holdingbranch=? | : () ) . q|
            GROUP BY itemtypes.itemtype, description, items.itype
            ORDER BY itemtypes.description
        |);
    }
    else {
        $sth = $dbh->prepare( q|
            SELECT itemtypes.itemtype, description, COUNT(*) AS total
            FROM itemtypes, biblioitems, items
            WHERE biblioitems.itemtype=itemtypes.itemtype
            AND items.biblioitemnumber=biblioitems.biblioitemnumber
            | . ( $branch ? q| AND items.holdingbranch=? | : () ) . q|
            GROUP BY itemtypes.itemtype, description
            ORDER BY itemtypes.description
        |);
    }
    $sth->execute($branch || ());
    my ($itemtype, $description,$total);
	my $grantotal = 0;
	my $count = 0;
    while (($itemtype, $description,$total) = $sth->fetchrow) {
		my %line;
        $line{itemtype} = $itemtype;
		$line{count} = $total;
		$grantotal += $total;
		push @results,\%line;
		$count ++;
	}
	my @mainloop;
	my %globalline;
	$globalline{loopitemtype} = \@results;
	$globalline{total} = $grantotal;
	$globalline{branch} = $branch;
	push @mainloop,\%globalline;
	return \@mainloop;
}

1;