package Koha::Virtualshelves;

# 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 Carp;

use Koha::Database;

use Koha::Virtualshelf;

use base qw(Koha::Objects);

=head1 NAME

Koha::Virtualshelf - Koha Virtualshelf Object class

=head1 API

=head2 Class Methods

=cut

=head3 type

=cut

sub get_private_shelves {
    my ( $self, $params ) = @_;
    my $page = $params->{page};
    my $rows = $params->{rows};
    my $borrowernumber = $params->{borrowernumber} || 0;

    $self->search(
        {
            category => 1,
            -or => {
                'virtualshelfshares.borrowernumber' => $borrowernumber,
                'me.owner' => $borrowernumber,
            }
        },
        {
            join => [ 'virtualshelfshares' ],
            distinct => 'shelfnumber',
            order_by => 'shelfname',
            ( ( $page and $rows ) ? ( page => $page, rows => $rows ) : () ),
        }
    );
}


sub get_public_shelves {
    my ( $self, $params ) = @_;
    my $page = $params->{page};
    my $rows = $params->{rows};

    $self->search(
        {
            category => 2,
        },
        {
            distinct => 'shelfnumber',
            order_by => 'shelfname',
            ( ( $page and $rows ) ? ( page => $page, rows => $rows ) : () ),
        }
    );
}

sub get_some_shelves {
    my ( $self, $params ) = @_;
    my $borrowernumber = $params->{borrowernumber} || 0;
    my $category = $params->{category} || 1;
    my $add_allowed = $params->{add_allowed};

    my @conditions;
    if ( $add_allowed ) {
        push @conditions, {
            -or =>
            [
                {
                    "me.owner" => $borrowernumber,
                    "me.allow_change_from_owner" => 1,
                },
                "me.allow_change_from_others" => 1,
            ]
        };
    }
    if ( $category == 1 ) {
        push @conditions, {
            -or =>
            {
                "virtualshelfshares.borrowernumber" => $borrowernumber,
                "me.owner" => $borrowernumber,
            }
        };
    }

    $self->search(
        {
            category => $category,
            ( @conditions ? ( -and => \@conditions ) : () ),
        },
        {
            join => [ 'virtualshelfshares' ],
            distinct => 'shelfnumber',
            order_by => { -desc => 'lastmodified' },
        }
    );
}

sub get_shelves_containing_record {
    my ( $self, $params ) = @_;
    my $borrowernumber = $params->{borrowernumber};
    my $biblionumber   = $params->{biblionumber};

    my @conditions = ( 'virtualshelfcontents.biblionumber' => $biblionumber );
    if ($borrowernumber) {
        push @conditions,
          {
              -or => [
                {
                    category => 1,
                    -or      => {
                        'me.owner' => $borrowernumber,
                        -or        => {
                            'virtualshelfshares.borrowernumber' => $borrowernumber,
                        },
                    }
                },
                { category => 2 },
            ]
          };
    } else {
        push @conditions, { category => 2 };
    }

    return Koha::Virtualshelves->search(
        {
            -and => \@conditions
        },
        {
            join     => [ 'virtualshelfcontents', 'virtualshelfshares' ],
            distinct => 'shelfnumber',
            order_by => { -asc => 'shelfname' },
        }
    );
}

sub _type {
    return 'Virtualshelve';
}

sub object_class {
    return 'Koha::Virtualshelf';
}

1;