#!/usr/bin/perl

# Copyright 2011 KohaAloha, NZ
#
# 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>.

=head1

A non-javascript method to add/modify a biblio's rating, called from opac-detail.pl

note: there is currently no 'delete rating' functionality in this script

=cut

use Modern::Perl;
use CGI qw ( -utf8 );

use C4::Auth qw( checkauth );
use C4::Context;

use Koha::Ratings;

my $query = CGI->new();

# auth required to add ratings
my ($userid, $cookie, $sessionID) = checkauth( $query, 0, {}, 'opac' );
my $loggedinuser = C4::Context->userenv->{'number'};

my $op               = $query->param('op') || q{};
my $biblionumber     = $query->param('biblionumber');
my $rating_old_value = $query->param('rating_value');
my $rating_value     = $query->param('rating');

# If JS is disabled and a user click on "Rate me" without selecting a rate
unless ( $biblionumber and $rating_value ) {
    print $query->redirect(
        "/cgi-bin/koha/opac-detail.pl?biblionumber=$biblionumber");
    exit;
}

if ( $op eq 'cud-add' ) {
    if ( !$rating_old_value ) {
        my $rating = Koha::Rating->new( { biblionumber => $biblionumber, borrowernumber => $loggedinuser, rating_value => $rating_value, });
        $rating->store if $rating;
    }
    else {
        my $rating = Koha::Ratings->find( { biblionumber => $biblionumber, borrowernumber => $loggedinuser });
        $rating->rating_value($rating_value)->store if $rating;
    }
}

print $query->redirect(
    "/cgi-bin/koha/opac-detail.pl?biblionumber=$biblionumber");
