package MusicBrainz::Server::Data::MediumFormat;

use Moose;
use namespace::autoclean;
use MusicBrainz::Server::Entity::MediumFormat;
use MusicBrainz::Server::Data::Utils qw( load_subobjects hash_to_row );

extends 'MusicBrainz::Server::Data::Entity';
with 'MusicBrainz::Server::Data::Role::EntityCache' => { prefix => 'mf' };
with 'MusicBrainz::Server::Data::Role::SelectAll';
with 'MusicBrainz::Server::Data::Role::OptionsTree';
with 'MusicBrainz::Server::Data::Role::Attribute';

sub _table
{
    return 'medium_format';
}

sub _columns
{
    return 'id, name, year, parent, child_order, has_discids, description';
}

sub _column_mapping {
    return {
        id              => 'id',
        parent_id       => 'parent',
        child_order     => 'child_order',
        name            => 'name',
        description     => 'description',
        year            => 'year',
        has_discids     => 'has_discids',
    };
}

sub _entity_class
{
    return 'MusicBrainz::Server::Entity::MediumFormat';
}

sub load
{
    my ($self, @media) = @_;
    load_subobjects($self, 'format', @media);
}

sub find_by_name
{
    my ($self, $name) = @_;
    my $row = $self->sql->select_single_row_hash(
        'SELECT ' . $self->_columns . ' FROM ' . $self->_table . '
          WHERE lower(name) = lower(?)', $name);
    return $row ? $self->_new_from_row($row) : undef;
}

sub in_use {
    my ($self, $id) = @_;
    return $self->sql->select_single_value(
        'SELECT 1 FROM medium WHERE format = ? LIMIT 1',
        $id);
}

__PACKAGE__->meta->make_immutable;
no Moose;
1;

=head1 COPYRIGHT

Copyright (C) 2009 Lukas Lalinsky

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 2 of the License, or
(at your option) any later version.

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.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

=cut