#!/usr/bin/perl
use strict;
use warnings;
use 5.010;

use Data::Dumper   qw(Dumper);
use Getopt::Long   qw(GetOptions);
use MetaCPAN::API;
my $mcpan = MetaCPAN::API->new;

my %opt = (size => 2);
GetOptions(\%opt, 'module=s', 'distro=s', 'size=i', 'html') or usage();
usage() if not ($opt{module} xor $opt{distro});

list_distributions();
list_modules();
exit;


# List all the distributions under a name-space (with a given prefix)
sub list_distributions {
    if ($opt{distro}) {
        my $r = $mcpan->post(
            'release',
            {
                query  => { match_all => {} },
                filter => { "and" => [
                        { prefix => { distribution => $opt{distro} } },
                        { term   => { status => 'latest' } },
                ]},
                fields => [ 'distribution', 'date', 'version' ],
                size => $opt{size},
            },
        );
        #print Dumper $r;
        if ($opt{html}) {
            my $html = join "\n",
                map { sprintf(q{<li><a href="http://metacpan.org/release/%s">%s</a></li>}, $_, $_) }
                map { $_->{fields}{distribution} }
                @{ $r->{hits}{hits} };
            print "<ul>\n$html\n</ul>\n";
        } else {
            print Dumper [map {$_->{fields}} @{ $r->{hits}{hits} }];
            print "Count " . scalar(@{ $r->{hits}{hits} }) . "\n";
        }
    }
}

# List all the modules under a name::space (with a given prefix)
sub list_modules {
    if ($opt{module}) {
        my $r = $mcpan->post(
            'module',
            {
                query  => { match_all => {} },
                filter => { "and" => [
                        { prefix => { 'module.name' => $opt{module} } },
                        #{ prefix => { distribution => 'Perl-Critic' } },
                        { term   => { status => 'latest' } },
                ]},
                fields => [ 'distribution', 'date', 'module.name' ],
                size => $opt{size},
            },
        );
        #print Dumper $r;
        print Dumper [map {$_->{fields}} @{ $r->{hits}{hits} }];
    }
}


sub usage {
    die <<"END_USAGE";
Usage: $0 --module Module::Name [--size LIMIT]
    or $0 --distro Distro-Name [--size LIMIT] [--html]

    LIMIT defaults to 2
END_USAGE
    exit;
}