use strict;
use warnings;

use Test::More;
use Test::Deep;
use Test::Exception;
use lib qw(t/lib);
use DBICTest;
use DBIx::Class::_Util 'sigwarn_silencer';

my $schema = DBICTest->init_schema();

$schema->resultset('Artist')->create(
  {
    name => 'mo',
    rank => '1337',
    cds  => [
      {
        title  => 'Song of a Foo',
        year   => '1999',
        tracks => [
          { title  => 'Foo Me Baby One More Time' },
          { title  => 'Foo Me Baby One More Time II' },
          { title  => 'Foo Me Baby One More Time III' },
          { title  => 'Foo Me Baby One More Time IV', cd_single => {
            artist => 1, title => 'MO! Single', year => 2021, tracks => [
              { title => 'singled out' },
              { title => 'still alone' },
            ]
          } }
        ],
        cd_to_producer => [
          { producer => { name => 'riba' } },
          { producer => { name => 'sushi' } },
        ]
      },
      {
        title  => 'Song of a Foo II',
        year   => '2002',
        tracks => [
          { title  => 'Quit Playing Games With My Heart' },
          { title  => 'Bar Foo' },
          { title  => 'Foo Bar', cd_single => {
            artist => 2, title => 'MO! Single', year => 2020, tracks => [
              { title => 'singled out' },
              { title => 'still alone' },
            ]
          } }
        ],
        cd_to_producer => [
          { producer => { name => 'riba' } },
          { producer => { name => 'sushi' } },
        ],
      }
    ],
    artwork_to_artist => [
      { artwork => { cd_id => 1 } },
      { artwork => { cd_id => 2 } }
    ]
  }
);

my $artist_with_extras = {
  artistid => 4, charfield => undef, name => 'mo', rank => 1337,
  artwork_to_artist => [
    { artist_id => 4, artwork_cd_id => 1, artwork => { cd_id => 1 } },
    { artist_id => 4, artwork_cd_id => 2, artwork => { cd_id => 2 } },
  ],
  cds => [
    {
      artist => 4, cdid => 6, title => 'Song of a Foo', genreid => undef, year => 1999, single_track => undef,
      cd_to_producer => [
        { attribute => undef, cd => 6, producer => { name => 'riba', producerid => 4 } },
        { attribute => undef, cd => 6, producer => { name => 'sushi', producerid => 5 } },
      ],
      tracks => [
        { cd => 6, position => 1, trackid => 19, title => 'Foo Me Baby One More Time', last_updated_on => undef, last_updated_at => undef, cd_single => undef },
        { cd => 6, position => 2, trackid => 20, title => 'Foo Me Baby One More Time II', last_updated_on => undef, last_updated_at => undef, cd_single => undef },
        { cd => 6, position => 3, trackid => 21, title => 'Foo Me Baby One More Time III', last_updated_on => undef, last_updated_at => undef, cd_single => undef },
        { cd => 6, position => 4, trackid => 22, title => 'Foo Me Baby One More Time IV', last_updated_on => undef, last_updated_at => undef, cd_single => {
          single_track => 22, artist => 1, cdid => 7, title => 'MO! Single', genreid => undef, year => 2021, tracks => [
            { cd => 7, position => 1, title => 'singled out', trackid => '23', last_updated_at => undef, last_updated_on => undef },
            { cd => 7, position => 2, title => 'still alone', trackid => '24', last_updated_at => undef, last_updated_on => undef },
          ],
        } }
      ],
    },
    {
      artist => 4, cdid => 8, title => 'Song of a Foo II', genreid => undef, year => 2002, single_track => undef,
      cd_to_producer => [
        { attribute => undef, cd => 8, producer => { name => 'riba', producerid => 4 } },
        { attribute => undef, cd => 8, producer => { name => 'sushi', producerid => 5 } },
      ],
      tracks => [
        { cd => 8, position => 1, trackid => 25, title => 'Quit Playing Games With My Heart', last_updated_on => undef, last_updated_at => undef, cd_single => undef },
        { cd => 8, position => 2, trackid => 26, title => 'Bar Foo', last_updated_on => undef, last_updated_at => undef, cd_single => undef },
        { cd => 8, position => 3, trackid => 27, title => 'Foo Bar', last_updated_on => undef, last_updated_at => undef, cd_single => {
          single_track => 27, artist => 2, cdid => 9, title => 'MO! Single', genreid => undef, year => 2020, tracks => [
            { cd => 9, position => 1, title => 'singled out', trackid => '28', last_updated_at => undef, last_updated_on => undef },
            { cd => 9, position => 2, title => 'still alone', trackid => '29', last_updated_at => undef, last_updated_on => undef },
          ],
        } }
      ],
    }
  ],
};

my $art_rs = $schema->resultset('Artist')->search({ 'me.artistid' => 4 });


my $art_rs_prefetch = $art_rs->search({}, {
  order_by => [qw/tracks.position tracks.trackid producer.producerid tracks_2.trackid artwork.cd_id/],
  result_class => 'DBIx::Class::ResultClass::HashRefInflator',
  prefetch => [
    {
      cds => [
        { tracks => { cd_single => 'tracks' } },
        { cd_to_producer => 'producer' }
      ]
    },
    { artwork_to_artist => 'artwork' }
  ],
});

cmp_deeply( $art_rs_prefetch->next, $artist_with_extras );


for my $order (
  [ [qw( cds.cdid tracks.position )] ],

  [ [qw( artistid tracks.cd tracks.position )],
    'we need to proxy the knowledge from the collapser that tracks.cd is a stable sorter for CDs' ],
) {

  my $cds_rs_prefetch = $art_rs->related_resultset('cds')->search({}, {
    order_by => [ $order->[0], qw(producer.name tracks_2.position) ],
    result_class => 'DBIx::Class::ResultClass::HashRefInflator',
    prefetch => [
      { tracks => { cd_single => 'tracks' } },
      { cd_to_producer => 'producer' },
    ],
  });

  local $SIG{__WARN__} = sigwarn_silencer(qr/Unable to properly collapse has_many results/) if $order->[1];

  cmp_deeply( $cds_rs_prefetch->next, $artist_with_extras->{cds}[0], '1st cd structure matches' );
  cmp_deeply( $cds_rs_prefetch->next, $artist_with_extras->{cds}[1], '2nd cd structure matches' );

  # INTERNALS! (a.k.a boars, gore and whores) DO NOT CARGOCULT!!!
  local $TODO = $order->[1] if $order->[1];
  ok( $cds_rs_prefetch->_resolved_attrs->{_ordered_for_collapse}, 'ordered_for_collapse detected properly' );
}


done_testing;