#!/usr/bin/perl

# Copyright 2011 Chris Cormack <chris@bigballofwax.co.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 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.


use strict;
use warnings;

use C4::Reports::Guided;
use JSON;
use CGI;

use Koha::Cache;

my $query  = CGI->new();
my $report_id = $query->param('id');
my $report_name = $query->param('name');

my $report_rec = get_saved_report( $report_name ? { 'name' => $report_name } : { 'id' => $report_id } );
die "Sorry this report is not public\n" unless $report_rec->{public};


my $cache_active = Koha::Cache->is_cache_active;
my ($cache_key, $cache, $json_text);
if ($cache_active) {
    $cache_key = "opac:report:".($report_name ? "name:$report_name" : "id:$report_id");
    $cache = Koha::Cache->new();
    $json_text = $cache->get_from_cache($cache_key);
}

unless ($json_text) {
    my $offset = 0;
    my $limit  = C4::Context->preference("SvcMaxReportRows") || 10;
    my ( $sth, $errors ) = execute_query( $report_rec->{savedsql}, $offset, $limit );
    if ($sth) {
        my $lines     = $sth->fetchall_arrayref;
        $json_text = to_json($lines);

        if ($cache_active) {
            $cache->set_in_cache( $cache_key, $json_text, $report_rec->{cache_expiry} );
        }
    }
    else {
        $json_text = to_json($errors);
    }
}

print $query->header;
print $json_text;