package Dist::Zilla::Plugin::MetaYAML 6.031;
# ABSTRACT: produce a META.yml

use Moose;
with 'Dist::Zilla::Role::FileGatherer';

use Dist::Zilla::Pragmas;

use Try::Tiny;
use namespace::autoclean;

#pod =head1 DESCRIPTION
#pod
#pod This plugin will add a F<META.yml> file to the distribution.
#pod
#pod For more information on this file, see L<Module::Build::API> and L<CPAN::Meta>.
#pod
#pod =attr filename
#pod
#pod If given, parameter allows you to specify an alternate name for the generated
#pod file.  It defaults, of course, to F<META.yml>.
#pod
#pod =cut

has filename => (
  is  => 'ro',
  isa => 'Str',
  default => 'META.yml',
);

sub gather_files {
  my ($self, $arg) = @_;

  require Dist::Zilla::File::FromCode;
  require YAML::Tiny;
  require CPAN::Meta::Converter;
  CPAN::Meta::Converter->VERSION(2.101550); # improved downconversion
  require CPAN::Meta::Validator;
  CPAN::Meta::Validator->VERSION(2.101550); # improved downconversion

  my $zilla = $self->zilla;

  my $file  = Dist::Zilla::File::FromCode->new({
    name => $self->filename,
    code_return_type => 'text',
    code => sub {
      my $distmeta  = $zilla->distmeta;

      my $validator = CPAN::Meta::Validator->new($distmeta);

      unless ($validator->is_valid) {
        my $msg = "Invalid META structure.  Errors found:\n";
        $msg .= join( "\n", $validator->errors );
        $self->log_fatal($msg);
      }

      my $converter = CPAN::Meta::Converter->new($distmeta);
      my $output    = $converter->convert(version => '1.4');
      $output->{x_serialization_backend} = sprintf '%s version %s',
            'YAML::Tiny', YAML::Tiny->VERSION;

      my $yaml = try {
        YAML::Tiny->new($output)->write_string; # text!
      }
      catch {
        $self->log_fatal("Could not create YAML string: " . YAML::Tiny->errstr)
      };
      return $yaml;
    },
  });

  $self->add_file($file);
  return;
}

__PACKAGE__->meta->make_immutable;
1;

#pod =head1 SEE ALSO
#pod
#pod Core Dist::Zilla plugins:
#pod L<@Basic|Dist::Zilla::PluginBundle::Basic>,
#pod L<Manifest|Dist::Zilla::Plugin::Manifest>.
#pod
#pod Dist::Zilla roles:
#pod L<FileGatherer|Dist::Zilla::Role::FileGatherer>.
#pod
#pod Other modules:
#pod L<CPAN::Meta>,
#pod L<CPAN::Meta::Spec>, L<YAML>.
#pod
#pod =cut

__END__

=pod

=encoding UTF-8

=head1 NAME

Dist::Zilla::Plugin::MetaYAML - produce a META.yml

=head1 VERSION

version 6.031

=head1 DESCRIPTION

This plugin will add a F<META.yml> file to the distribution.

For more information on this file, see L<Module::Build::API> and L<CPAN::Meta>.

=head1 PERL VERSION

This module should work on any version of perl still receiving updates from
the Perl 5 Porters.  This means it should work on any version of perl
released in the last two to three years.  (That is, if the most recently
released version is v5.40, then this module should work on both v5.40 and
v5.38.)

Although it may work on older versions of perl, no guarantee is made that the
minimum required version will not be increased.  The version may be increased
for any reason, and there is no promise that patches will be accepted to
lower the minimum required perl.

=head1 ATTRIBUTES

=head2 filename

If given, parameter allows you to specify an alternate name for the generated
file.  It defaults, of course, to F<META.yml>.

=head1 SEE ALSO

Core Dist::Zilla plugins:
L<@Basic|Dist::Zilla::PluginBundle::Basic>,
L<Manifest|Dist::Zilla::Plugin::Manifest>.

Dist::Zilla roles:
L<FileGatherer|Dist::Zilla::Role::FileGatherer>.

Other modules:
L<CPAN::Meta>,
L<CPAN::Meta::Spec>, L<YAML>.

=head1 AUTHOR

Ricardo SIGNES 😏 <cpan@semiotic.systems>

=head1 COPYRIGHT AND LICENSE

This software is copyright (c) 2023 by Ricardo SIGNES.

This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.

=cut