# Module of TWiki Enterprise Collaboration Platform, http://TWiki.org/
#
# Copyright (C) 2000-2018 Peter Thoeny, peter[at]thoeny.org
# and TWiki Contributors. All Rights Reserved. TWiki Contributors
# are listed in the AUTHORS file in the root of this distribution.
# NOTE: Please extend that file, not this notice.
#
# Additional copyrights apply to some or all of the code in this
# file as follows:
#
# This program 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. For
# more details read LICENSE in the root of this distribution.
#
# This program 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.
#
# As per the GPL, removal of this notice is prohibited.

package TWiki::Configure::Checkers::UseClientSessions;

use strict;

use TWiki::Configure::Checker;

use base 'TWiki::Configure::Checker';

my @modules = (
    {
        name => 'CGI::Session',
        usage => "Sessions",
        requiredVersion => 1,
    },
    {
        name => 'CGI::Cookie',
        usage => "Sessions",
        recommendedVersion => 1,
    },
   );

sub check {
    my $this = shift;

    my $mess = '';
    if (!eval "use CGI::Cookie; 1") {
        $mess .= <<HERE;
The CGI::Cookie Perl module is required for session support, but is not
available.
HERE
    }
    if (!eval "use CGI::Session; 1") {
        $mess .= <<HERE;
The CGI::Session Perl module is required for session support, but is not
available.
HERE
    }
    if( $mess ) {
        if ($TWiki::cfg{UseClientSessions} ) {
            $mess = $this->ERROR( $mess );
        } else {
            $mess = $this->WARN( $mess );
        }
    }
    return $mess;
}

1;