# 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: DateTimeWithTimeZone.pm,v 1.2 2010/01/25 03:15:10 nagler Exp $
package Bivio::Type::DateTimeWithTimeZone;
use strict;
use Bivio::Base 'Bivio.Type';

our($VERSION) = sprintf('%d.%02d', q$Revision: 1.2 $ =~ /\d+/g);
my($_IDI) = __PACKAGE__->instance_data_index;
my($_DT) = b_use('Type.DateTime');

sub as_date_time {
    my($self) = @_;
    my($fields) = $self->[$_IDI];
    return $fields->{tz}->date_time_from_utc($fields->{dt});
}

sub as_literal {
    my($self) = @_;
    return substr($_DT->to_string($self->as_date_time, 0), 0, -3);
}

sub from_literal {
    b_die('not supported yet');
    # DOES NOT RETURN
}

sub new {
    my($proto, $date_time, $time_zone) = @_;
    my($self) = shift->SUPER::new;
    $self->[$_IDI] = {
	tz => $time_zone,
	dt => $date_time,
    };
    return $self;
}

sub to_literal {
    my(undef, $value) = @_;
    return ''
	unless $value;
    return $value->as_literal;
}

1;