#!/usr/bin/perl

# 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 Modern::Perl;

use CGI qw ( -utf8 );
use C4::Auth;
use C4::Output;
use C4::Templates qw/gettemplate/;

my $query = new CGI;
my $template = C4::Templates::gettemplate( 'maintenance.tt', 'opac', $query, 0 );

my $koha_db_version = C4::Context->preference('Version');
my $kohaversion     = C4::Context::KOHAVERSION;
# Strip dots from version
$kohaversion     =~ s/\.//g if defined $kohaversion;
$koha_db_version =~ s/\.//g if defined $koha_db_version;

if ( !defined $koha_db_version || # DB not populated
     $kohaversion > $koha_db_version || # Update needed
     C4::Context->preference('OpacMaintenance') ) { # Maintenance mode enabled
    output_html_with_http_headers $query, '', $template->output;
}
else {
    print $query->redirect("/cgi-bin/koha/opac-main.pl");
}

1;