#!/usr/bin/env perl

use strict;
use warnings;
use FindBin;
use lib ("$FindBin::Bin/../PerlLib");
use Gene_obj;
use GFF3_utils;
use Carp;
use Nuc_translator;
use File::Basename;

my $usage = "\n\nusage: $0 gff3_file\n\n";

my $gff3_file = $ARGV[0] or die $usage;

my $gene_obj_indexer_href = {};

## associate gene identifiers with contig id's.
my $contig_to_gene_list_href = &GFF3_utils::index_GFF3_gene_objs($gff3_file, $gene_obj_indexer_href);

print "track name=\'" . basename($gff3_file) . "\'\n";

foreach my $asmbl_id (sort keys %$contig_to_gene_list_href) {
    
    my @gene_ids = @{$contig_to_gene_list_href->{$asmbl_id}};
    
    foreach my $gene_id (@gene_ids) {
        		
		my $gene_obj_ref = $gene_obj_indexer_href->{$gene_id};
		
		foreach my $gene ($gene_obj_ref, $gene_obj_ref->get_additional_isoforms()) {

			my $bed = $gene->to_BED_format();

			print $bed;
		}
	}
}


exit(0);