=head1 LICENSE

Copyright [1999-2015] Wellcome Trust Sanger Institute and the EMBL-European Bioinformatics Institute
Copyright [2016-2019] EMBL-European Bioinformatics Institute

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

     http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

=head1 NAME

Bio::EnsEMBL::IO::Translator::Slice

=head1 SYNOPSIS

=head1 DESCRIPTION

Translator for Ensembl slices.

=cut

package Bio::EnsEMBL::IO::Translator::Slice;

use parent qw/Bio::EnsEMBL::IO::Translator/;

use strict;
use warnings;

use Carp;

use Bio::EnsEMBL::Utils::RDF qw/seq_region_uri/;

my %field_callbacks = (version         => 'version',
		       production_name => 'production_name',
		       taxon_id        => 'taxon_id',
		       scientific_name => 'scientific_name',
		       name            => 'name',
		       cs_name         => 'coord_system_name',
		       cs_version      => 'coord_system_version',
		       uri             => 'uri'
		      );

=head2 new

    Returntype   : Bio::EnsEMBL::IO::Translator::Slice

=cut

sub new {
  my ($class, %args) = @_;
  
  my @required_args = qw/version meta_adaptor/;
  my @missing_args;
  map { push @missing_args, $args{$_} unless exists $args{$_} } @required_args;
  confess "Missing arguments required by Bio::EnsEMBL::IO::Translator::Slice: " . join(',', @missing_args)
    if scalar @missing_args;

  croak "Bio::EnsEMBL::IO::Translator::Slice requires a meta adaptor"
    unless $args{meta_adaptor}->isa('Bio::EnsEMBL::DBSQL::MetaContainer');

  my $self = $class->SUPER::new(\%args);
  $self->version($args{version});
  $self->production_name($self->meta_adaptor->list_value_by_key('species.production_name')->[0]);
  
  # once we have the instance, add our customized callbacks to the translator
  $self->add_callbacks(\%field_callbacks);

  return $self;
}

sub version {
  my ($self, $version) = @_;
  
  $self->{version} = $version if $version;
  return $self->{version};
}

sub production_name {
  my ($self, $prod_name) = @_;
  
  $self->{production_name} = $prod_name if $prod_name;
  return $self->{production_name};
}

sub meta_adaptor {
  my $self = shift;
  return $self->{meta_adaptor};
}

=head2 taxon_id

    Description: 
    Returntype : 

=cut

sub taxon_id {
  my ($self, $object) = @_;
  
  return $self->meta_adaptor->get_taxonomy_id;
}

=head2 scientific_name

    Description: 
    Returntype : 

=cut

sub scientific_name {
  my ($self, $object) = @_;
  
  return $self->meta_adaptor->get_scientific_name;
}

=head2 name

    Description: Wrapper around slice name field
    Returntype : String

=cut

sub name {
  my ($self, $object) = @_;
  
  return $object->name();
}

=head2 coord_system_name

=cut

sub coord_system_name {
  my ($self, $object) = @_;
  
  return $object->coord_system->name();
}

=head2 coord_system_version

=cut

sub coord_system_version {
  my ($self, $object) = @_;
  
  return $object->coord_system->version();
}

=head2 uri

    Description: 
    Returntype : Array

=cut

sub uri {
  my ($self, $object) = @_;

  my $version = $self->version;
  my $production_name = $self->production_name;
  my $cs_version = $self->coord_system_version($object);
  my $region_name = $self->name($object);
  
  return seq_region_uri($version, $production_name, $cs_version, $region_name);
}

1;