#!/usr/bin/perl

# Copyright 2006 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 Modern::Perl;
use CGI        qw ( -utf8 );
use C4::Auth   qw( get_template_and_user );
use C4::Output qw( output_html_with_http_headers );
use C4::Scrubber;

use Koha::Biblios;
use Koha::DateUtils qw( dt_from_string );
use Koha::Review;
use Koha::Reviews;

my $query        = CGI->new;
my $biblionumber = $query->param('biblionumber');
my $review       = $query->param('review');
my $reviewid     = $query->param('reviewid');
my $op           = $query->param('op') // q{};

my ( $template, $borrowernumber, $cookie ) = get_template_and_user(
    {
        template_name => "opac-review.tt",
        query         => $query,
        type          => "opac",
    }
);

# FIXME: need to allow user to delete their own comment(s)

my ( $clean, @errors, $savedreview );
my $biblio = Koha::Biblios->find($biblionumber);

if ( !$biblio ) {
    push @errors, { nobiblio => 1 };
} elsif ($reviewid) {    # edit existing one, check on creator
    $savedreview = Koha::Reviews->search( { reviewid => $reviewid, borrowernumber => $borrowernumber } )->next;
    push @errors, { unauthorized => 1 } if !$savedreview;
} else {    # this check prevents adding multiple comments
            # FIXME biblionumber, borrowernumber should be a unique key of reviews
    $savedreview = Koha::Reviews->search( { biblionumber => $biblionumber, borrowernumber => $borrowernumber } )->next;
    $review      = $savedreview ? $savedreview->review : $review;
}

if ( $op =~ /^cud-/ && !@errors && defined $review ) {
    if ( $review !~ /\S/ ) {
        push @errors, { empty => 1 };
    } else {
        $clean = C4::Scrubber->new('comment')->scrub($review);
        if ( $clean !~ /\S/ ) {
            push @errors, { scrubbed_all => 1 };
        } else {
            if ( $clean ne $review ) {
                push @errors, { scrubbed => $clean };
            }
            if ($savedreview) {
                $savedreview->set(
                    {
                        review       => $clean,
                        approved     => 0,
                        datereviewed => dt_from_string
                    }
                )->store;
            } else {
                $reviewid = Koha::Review->new(
                    {
                        biblionumber   => $biblionumber,
                        borrowernumber => $borrowernumber,
                        review         => $clean,
                        datereviewed   => dt_from_string
                    }
                )->store->reviewid;
            }
            unless (@errors) { $template->param( WINDOW_CLOSE => 1 ); }
        }
    }
}
(@errors) and $template->param( ERRORS => \@errors );
$review = $clean;
$review ||= $savedreview->review if $savedreview;
$template->param(
    'borrowernumber' => $borrowernumber,
    'review'         => $review,
    'reviewid'       => $reviewid || 0,
    'biblio'         => $biblio,
);

output_html_with_http_headers $query, $cookie, $template->output;