# Copyright (c) 2010 bivio Software, Inc.  All Rights Reserved.
#
# Visit http://www.bivio.biz for more info.
# 
# This library is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as
# published by the Free Software Foundation; either version 2.1 of the
# License, or (at your option) any later version.
# 
# This library 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
# Lesser General Public License for more details.
# 
# You should have received a copy of the GNU Lesser General Public
# License along with this library;  If not, you may get a copy from:
# http://www.opensource.org/licenses/lgpl-license.html
# 
# $Id: RealmDAG.pm,v 1.1 2010/01/22 13:46:46 nagler Exp $
package Bivio::Util::RealmDAG;
use strict;
use Bivio::Base 'Bivio.ShellUtil';

our($VERSION) = sprintf('%d.%02d', q$Revision: 1.1 $ =~ /\d+/g);

sub USAGE {
    return <<'EOF';
usage: bivio RealmDAG [options] command [args..]
commands
  list_parents [RealmDAG...] -- list all parents of realm [type]
EOF
}

sub list_parents {
    sub LIST_PARENTS {[qw(*RealmDAG)]}
    my($self, $bp) = shift->parameters(\@_);
    $bp->{RealmDAG} = [b_use('Type.RealmDAG')->get_non_zero_list]
	unless @{$bp->{RealmDAG}};
    return $self->model('RealmDAG')->map_iterate(
	sub {
	    my($pid, $type) = shift->get(qw(parent_id realm_dag_type));
	    return
		unless grep($_->equals($type), @{$bp->{RealmDAG}});
	    return join(
		' ',
		$type->get_name,
		$self->unauth_model('RealmOwner', {realm_id => $pid})
		    ->get(qw(name realm_id)),
	    );
	},
	'realm_dag_type, parent_id',
	{child_id => $self->req('auth_id')},
    );
}

1;