#!/usr/local/bin/perl
# $Id$

use strict;

BEGIN { 
  use Bio::Root::Test;
  test_begin(-tests => 33);
  
  use_ok('Bio::Tools::Run::Alignment::Blat');
  use_ok('Bio::SeqIO');
  use_ok('Bio::Seq');
}

my $db =  test_input_file("blat_dna.fa");

my $query = test_input_file("blat_dna.fa");

my $factory = Bio::Tools::Run::Alignment::Blat->new('quiet'  => 1,
						    "DB"     => $db);
ok $factory->isa('Bio::Tools::Run::Alignment::Blat');

my $blat_present = $factory->executable();

SKIP: {
    test_skip(-requires_executable => $factory,
              -tests => 10);
    
    my $searchio = $factory->align($query);
    my $result = $searchio->next_result;
    my $hit    = $result->next_hit;
    my $hsp    = $hit->next_hsp;
    isa_ok($hsp, "Bio::Search::HSP::HSPI");
    is($hsp->query->start,1);
    is($hsp->query->end,1775);
    is($hsp->hit->start,1);
    is($hsp->hit->end,1775);
    my $sio = Bio::SeqIO->new(-file=>$query,-format=>'fasta');
    
    my $seq  = $sio->next_seq ;
    
    $searchio = $factory->align($seq);
    like($searchio, qr/psl/, 'PSL parser (default)');
    $result = $searchio->next_result;
    $hit    = $result->next_hit;
    $hsp    = $hit->next_hsp;
    isa_ok($hsp, "Bio::Search::HSP::HSPI");
    is($hsp->query->start,1);
    is($hsp->query->end,1775);
    is($hsp->hit->start,1);
    is($hsp->hit->end,1775);
    
    # test alternate formats (not all of these work!)
    $factory->reset_parameters('quiet'  => 1,
                             "DB"     => $db,
                             out => 'blast');
    $searchio = $factory->align($query);
    
    like($searchio, qr/blast/, 'BLAST parser');
    
    $result = $searchio->next_result;
    $hit    = $result->next_hit;
    $hsp    = $hit->next_hsp;
    isa_ok($hsp, "Bio::Search::HSP::HSPI");
    is($hsp->query->start,1);
    is($hsp->query->end,1775);
    is($hsp->hit->start,1);
    is($hsp->hit->end,1775);
    
    $factory->reset_parameters('quiet'  => 1,
                             "DB"     => $db,
                             out => 'blast9');
    $searchio = $factory->align($query);
    
    like($searchio, qr/blasttable/, 'Tabuar BLAST parser');
    
    $result = $searchio->next_result;
    $hit    = $result->next_hit;
    $hsp    = $hit->next_hsp;
    isa_ok($hsp, "Bio::Search::HSP::HSPI");
    is($hsp->query->start,1);
    is($hsp->query->end,1775);
    is($hsp->hit->start,1);
    is($hsp->hit->end,1775);
}

# new wrapper; regions

$db = test_input_file("blat_dna.2bit");

$factory = Bio::Tools::Run::Alignment::Blat->new(
    -db     => $db,
    -quiet  => 1,
    
    # note coordinates here are Blat-compatible, 0-based (start, end]
    -qsegment => 'sequence_10:0-100',
    -tsegment => 'sequence_10:0-100'
    );
ok $factory->isa('Bio::Tools::Run::Alignment::Blat');

SKIP: {
    skip("Tests require database named blat_dna.2bit", 5) if ! -e $db;
    my $searchio = $factory->align($db);
    my $result = $searchio->next_result;
    my $hit    = $result->next_hit;
    my $hsp    = $hit->next_hsp;
    isa_ok($hsp, "Bio::Search::HSP::HSPI");
    is($hsp->query->start,1);
    is($hsp->query->end,100);
    is($hsp->hit->start,1);
    is($hsp->hit->end,100);
    
    # No on-the-fly conversion of Bio::Seq yet
    
    #my $sio = Bio::SeqIO->new(-file=>$query,-format=>'fasta');
    #my $seq  = $sio->next_seq ;
    
    #$searchio = $factory->align($seq);
    #$result = $searchio->next_result;
    #$hit    = $result->next_hit;
    #$hsp    = $hit->next_hsp;
    #isa_ok($hsp, "Bio::Search::HSP::HSPI");
    #is($hsp->query->start,1);
    #is($hsp->query->end,1775);
    #is($hsp->hit->start,1);
    #is($hsp->hit->end,1775);
}

1;