use 5.006;
use warnings;
use strict;
package Test::Reporter::Transport::Metabase;
# ABSTRACT: Metabase transport for Test::Reporter

our $VERSION = '1.999009';

use Test::Reporter::Transport 1.57 ();
our @ISA = qw/Test::Reporter::Transport/;

use Carp                            ();
use Config::Perl::V                 ();
use CPAN::Testers::Report     1.999001 ();
use File::Glob                      ();
use JSON                      2     ();
use Metabase::User::Profile   0.016 ();
use Metabase::User::Secret    0.016 ();
use Metabase::Client::Simple  0.008 ();

#--------------------------------------------------------------------------#
# argument definitions
#--------------------------------------------------------------------------#

my %default_args = (
  client => 'Metabase::Client::Simple'
);
my @allowed_args = qw/uri id_file client/;
my @required_args = qw/uri id_file/;

#--------------------------------------------------------------------------#
# new
#--------------------------------------------------------------------------#

sub new {
  my $class = shift;
  Carp::confess __PACKAGE__ . " requires transport args in key/value pairs\n"
    if @_ % 2;
  my %args = ( %default_args, @_ );
 
  for my $k ( @required_args ) {
    Carp::confess __PACKAGE__ . " requires $k argument\n"
      unless exists $args{$k};
  }

  for my $k ( keys %args ) {
    Carp::confess __PACKAGE__ . " unknown argument '$k'\n"
      unless grep { $k eq $_ } @allowed_args;
  }

  return bless \%args => $class;
}

#--------------------------------------------------------------------------#
# send
#--------------------------------------------------------------------------#

sub send {
  my ($self, $report) = @_;

  unless ( eval { $report->distfile } ) {
    Carp::confess __PACKAGE__ . ": requires the 'distfile' parameter to be set\n"
      . "Please update CPAN::Reporter and/or CPANPLUS to a version that provides \n"
      . "this information to Test::Reporter.  Report will not be sent.\n";
  }

  my ($profile, $secret) = $self->_load_id_file;

  # Load specified metabase client.
  my $class = $self->{client};
  eval "require $class"  
      or Carp::confess __PACKAGE__ . ": could not load client '$class':\n$@\n";

  my $client = $class->new(
    uri => $self->{uri},
    profile => $profile,
    secret => $secret,
  );

  # Get facts about Perl config that Test::Reporter doesn't capture
  # Unfortunately we can't do this from the current perl in case this
  # is a report regenerated from a file and isn't the perl that the report
  # was run on
  my $perlv = $report->{_perl_version}->{_myconfig};
  my $config = Config::Perl::V::summary(Config::Perl::V::plv2hash($perlv));
  my $perl_version = $report->{_perl_version}{_version} || $config->{version};

  # Build CPAN::Testers::Report with its various component facts.
  my $metabase_report = CPAN::Testers::Report->open(
    resource => 'cpan:///distfile/' . $report->distfile
  );

  $metabase_report->add( 'CPAN::Testers::Fact::LegacyReport' => {
    grade         => $report->grade,
    osname        => $config->{osname},
    osversion     => $report->{_perl_version}{_osvers},
    archname      => $report->{_perl_version}{_archname},
    perl_version  => $perl_version,
    textreport    => $report->report
  });

  # TestSummary happens to be the same as content metadata 
  # of LegacyReport for now
  $metabase_report->add( 'CPAN::Testers::Fact::TestSummary' =>
    [$metabase_report->facts]->[0]->content_metadata()
  );
    
  # XXX wish we could fill these in with stuff from CPAN::Testers::ParseReport
  # but it has too many dependencies to require for T::R::Transport::Metabase.
  # Could make it optional if installed?  Will do this for the offline NNTP 
  # archive conversion, so maybe wait until that is written then move here and
  # use if CPAN::Testers::ParseReport is installed -- dagolden, 2009-03-30 
  # $metabase_report->add( 'CPAN::Testers::Fact::TestOutput' => $stuff );
  # $metabase_report->add( 'CPAN::Testers::Fact::TesterComment' => $stuff );
  # $metabase_report->add( 'CPAN::Testers::Fact::PerlConfig' => $stuff );
  # $metabase_report->add( 'CPAN::Testers::Fact::TestEnvironment' => $stuff );
  # $metabase_report->add( 'CPAN::Testers::Fact::Prereqs' => $stuff );
  # $metabase_report->add( 'CPAN::Testers::Fact::InstalledModules' => $stuff );

  $metabase_report->close();

  return $client->submit_fact($metabase_report);
}

sub _load_id_file {
  my ($self) = shift;
  
  open my $fh, "<", File::Glob::bsd_glob( $self->{id_file} )
    or Carp::confess __PACKAGE__. ": could not read ID file '$self->{id_file}'"
    . "\n$!";
  
  my $data = JSON->new->ascii->decode( do { local $/; <$fh> } );

  my $profile = eval { Metabase::User::Profile->from_struct($data->[0]) }
    or Carp::confess __PACKAGE__ . ": could not load Metabase profile\n"
    . "from '$self->{id_file}':\n$@";

  my $secret = eval { Metabase::User::Secret->from_struct($data->[1]) }
    or Carp::confess __PACKAGE__ . ": could not load Metabase secret\n"
    . "from '$self->{id_file}':\n $@";

  return ($profile, $secret);
}

1;

__END__

=pod

=encoding UTF-8

=head1 NAME

Test::Reporter::Transport::Metabase - Metabase transport for Test::Reporter

=head1 VERSION

version 1.999009

=head1 SYNOPSIS

    my $report = Test::Reporter->new(
        transport => 'Metabase',
        transport_args => [
          uri     => 'http://metabase.example.com:3000/',
          id_file => '/home/jdoe/.metabase/metabase_id.json',
        ],
    );

    # use space-separated in a CPAN::Reporter config.ini
    transport = Metabase uri http://metabase.example.com:3000/ ...

=head1 DESCRIPTION

This module submits a Test::Reporter report to the specified Metabase instance.

This requires a network connection to the Metabase uri provided.  If you wish
to save reports during offline operation, see
L<Test::Reporter::Transport::File>. (Eventually, you may be able to run a local
Metabase instance to queue reports for later transmission, but this feature has
not yet been developed.)

=head1 USAGE

See L<Test::Reporter> and L<Test::Reporter::Transport> for general usage
information.

=head2 Transport arguments

Unlike most other Transport classes, this class requires transport arguments
to be provided as key-value pairs:

    my $report = Test::Reporter->new(
        transport => 'Metabase',
        transport_args => [
          uri     => 'http://metabase.example.com:3000/',
          id_file => '/home/jdoe/.metabase/metabase_id.json',
        ],
    );

Arguments include:

=over

=item C<uri> (required)

The C<uri> argument gives the network location of a Metabase instance to receive
reports.

=item C<id_file> (required)

The C<id_file> argument must be a path to a Metabase ID file.  If
you do not already have an ID file, use the L<metabase-profile> program to
create one.

  $ metabase-profile

This creates the file F<metabase_id.json> in the current directory.  You
can also give an C<--output> argument to save the file to a different
location or with a different name.

=item C<client> (optional)

The C<client> argument is optional and specifies the type of Metabase::Client
to use to transmit reports to the target Metabase.  It defaults to
L<Metabase::Client::Simple>.

=back

=head1 METHODS

These methods are only for internal use by Test::Reporter.

=head2 new

    my $sender = Test::Reporter::Transport::File->new( $params );

The C<new> method is the object constructor.

=head2 send

    $sender->send( $report );

The C<send> method transmits the report.

=for :stopwords cpan testmatrix url annocpan anno bugtracker rt cpants kwalitee diff irc mailto metadata placeholders metacpan

=head1 SUPPORT

=head2 Bugs / Feature Requests

Please report any bugs or feature requests through the issue tracker
at L<https://github.com/cpan-testers/Test-Reporter-Transport-Metabase/issues>.
You will be notified automatically of any progress on your issue.

=head2 Source Code

This is open source software.  The code repository is available for
public review and contribution under the terms of the license.

L<https://github.com/cpan-testers/Test-Reporter-Transport-Metabase>

  git clone https://github.com/cpan-testers/Test-Reporter-Transport-Metabase.git

=head1 AUTHORS

=over 4

=item *

David Golden <dagolden@cpan.org>

=item *

Richard Dawe <richdawe@cpan.org>

=back

=head1 CONTRIBUTOR

=for stopwords Chris 'BinGOs' Williams

Chris 'BinGOs' Williams <chris@bingosnet.co.uk>

=head1 COPYRIGHT AND LICENSE

This software is Copyright (c) 2015 by David Golden.

This is free software, licensed under:

  The Apache License, Version 2.0, January 2004

=cut
