package Koha::Biblio::ItemGroup;

# 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 3 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, see <http://www.gnu.org/licenses>.

use Modern::Perl;

use base qw(Koha::Object);

use Koha::Biblio::ItemGroup::Items;

use Koha::Exceptions::Object;

use Koha::Items;

=head1 NAME

Koha::Biblio::ItemGroup - Koha ItemGroup Object class

=head1 API

=head2 Class methods

=head3 store

    $item_group->store;

Overloaded I<store> method that takes care of creation date handling.

=cut

sub store {

    my ($self) = @_;

    unless ( $self->in_storage ) {

        # new entry

        $self->set(

            {

                created_on => \'NOW()'

            }

        );

    }

    return $self->SUPER::store();

}

=head3 items

    my $items = $item_group->items;

Returns all the items linked to the item group.

=cut

sub items {

    my ($self) = @_;

    my $items_rs = $self->_result->item_group_items;

    my @item_ids = $items_rs->get_column('item_id')->all;

    return Koha::Items->new->empty unless @item_ids;

    return Koha::Items->search(

        {

            itemnumber => {

                -in => \@item_ids

            }

        }

    );

}

=head3 add_item

    $item_group->add_item({ item_id => $item_id });

=cut

sub add_item {

    my ($self, $params) = @_;

    my $item_id = $params->{item_id};

    my $item = Koha::Items->find( $item_id );

    unless ( $item->biblionumber == $self->biblio_id ) {

        Koha::Exceptions::Object::FKConstraint->throw(

            broken_fk => 'biblio_id'

        );

    }

    Koha::Biblio::ItemGroup::Item->new(

        {

            item_group_id => $self->id,

            item_id       => $item_id,

        }

    )->store;

    return $self;

}

=head3 to_api_mapping

This method returns the mapping for representing a Koha::Biblio::ItemGroup object

on the API.

=cut

sub to_api_mapping {

    return {

        created_on   => 'creation_date',

        updated_on   => 'modification_date'

    };

}

=head2 Internal methods

=head3 _type

=cut

sub _type {

    return 'ItemGroup';

}

=head3 object_class

=cut

sub object_class {

    return 'Koha::Biblio::ItemGroup';

}

1;

package Koha::Biblio::ItemGroup::Item;

# 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 3 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, see <http://www.gnu.org/licenses>.

use Modern::Perl;

use base qw(Koha::Object);

=head1 NAME

Koha::Biblio::ItemGroup::Item - Koha ItemGroup Item Object class

=head1 API

=head2 Internal methods

=head3 _type

=cut

sub _type {

    return 'ItemGroupItem';

}

=head3 object_class

=cut

sub object_class {

    return 'Koha::Biblio::ItemGroup::Item';

}

1;

package Koha::Biblio::ItemGroup::Items;

# 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 3 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, see <http://www.gnu.org/licenses>.

use Modern::Perl;

use Koha::Biblio::ItemGroup::Item;

use base qw(Koha::Objects);

=head1 NAME

Koha::Biblio::ItemGroup::Items - Koha ItemGroup Items Object set class

=head1 API

=head2 Internal methods

=head3 _type

=cut

sub _type {

    return 'ItemGroupItem';

}

=head3 object_class

=cut

sub object_class {

    return 'Koha::Biblio::ItemGroup::Item';

}

1;

package Koha::Biblio::ItemGroups;

# 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 3 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, see <http://www.gnu.org/licenses>.

use Modern::Perl;

use Koha::Biblio::ItemGroup;

use base qw(Koha::Objects);

=head1 NAME

Koha::Biblio::ItemGroups - Koha ItemGroup Object set class

=head1 API

=head2 Internal methods

=head3 _type

=cut

sub _type {

    return 'ItemGroup';

}

=head3 object_class

=cut

sub object_class {

    return 'Koha::Biblio::ItemGroup';

}

1;