#!/usr/bin/perl

=pod

=head1 NAME

cpanmetrics - Generation of CPAN metrics using some default settings

=head1 SYNOPSIS

  > cpanmetrics
  (various output for several hours)

=head1 DESCRIPTION

C<cpanmetrics> is the script version of the L<CPAN::Metrics> module,
downloading a L<minicpan> mirror, expanding out the default set of Perl
files from the archives, and processing the metrics data for all
installed L<Perl::Metrics> plugins.

=head2 Settings Used

The minicpan mirror will be checked out underneath a C<.minicpan>
directory, created in your home directory.

The archives will be extracted underneath a C<.cpanmetrics> directory,
create in your home directory, with the root directory for each
archive located at the same name as the relevant archive in the
C<.minicpan> directory.

And finally, the metrics SQLite database will be created at
C<.cpanmetrics/metrics.sqlite>.

=cut

use 5.005;
use strict;
use File::Spec    ();
use File::HomeDir ();
use Getopt::Long  ();
use CPAN::Mini    ();
use CPAN::Metrics ();

use vars qw{$VERSION};
BEGIN {
	$VERSION = '0.08';
}





#####################################################################
# Check the directories

# Get some command line flags
my $QUIET         = 0;
my $EXTRACT_FORCE = 0;
my $PROCESS_INDEX = 0;
Getopt::Long::GetOptions(
	help    => sub { help()    },
	version => sub { version() },
	force   => \$EXTRACT_FORCE,
	process => \$PROCESS_INDEX,
	quiet   => \$QUIET,
);

#my $extracted = File::Spec->catdir(
#	File::HomeDir->my_data, 'Perl', 'CPAN-Metrics',
#);
#my $metrics  = File::Spec->catfile(
#	File::HomeDir->my_documents, 'metrics.sqlite',
#);
my $extracted = "C:\\CPAN-Metrics";
my $metrics   = "C:\\metrics.sqlite";





#####################################################################
# Create and execute the CPAN::Metrics object

# Get the user's minicpan configuration
my %config = CPAN::Mini->read_config;

message("Creating CPAN::Metrics object...\n");
my $metrics = CPAN::Metrics->new(
	%config,
	trace         => ! $QUIET,
	extract       => $extracted,
	metrics       => $metrics,
	extract_force => $EXTRACT_FORCE,
);

message("Launching CPAN::Metrics process...\n");
if ( $PROCESS_INDEX ) {
	$metrics->process_index;
} else {
	$metrics->run;
}

exit(0);

sub message {
	return if $QUIET;
	print $_[0];
}

sub version {
	print "cpanmetrics $VERSION\n";
	exit(0);
}

sub help {
	print <<"END_HELP";
This is cpanmetrics $VERSION, the CPAN::Metrics command line launcher

Usage:
  cpanmetrics [OPTIONS]

Options:
  --quiet         run quietly, with all tracing disabled
  --help          show this help, then exit
  --version       output version information, then exit
END_HELP
	exit(0);
}