#!/usr/bin/env perl
use strict;
use warnings;
use Getopt::Long;
use Pod::Usage qw(pod2usage);

=head1 NAME

rrr-client - continously mirror recent updates

=head1 SYNOPSIS

  rrr-client [options]

  rrr-client --source some.mirror::module/ --target /some/dir/

=head1 OPTIONS

=over 8

=cut

my @opt = <<'=back' =~ /B<--(\S+)>/g;

=item B<--help|h>

Prints a brief message and exists.

=item B<--source=s>

Source to mirror from, including the name of the RECENT metadata file.
For example C<cpan-rsync.perl.org::CPAN/RECENT.recent>.

=item B<--target=s>

Destination directory for the mirror.

=item B<--user=s>

Username if the rsync source requires it.

=item B<--password=s>

Password if the rsync source requires it.  Can also be set by setting
the environment variable RSYNC_PASSWORD.

=item B<--runstatusfile=s>

Only needed for debugging. Path to the internally used status file.
Argument is passed through to the File::Rsync::Mirror::Recent object.

=item B<--skip-deletes!>

Defaults to false. If true, skips all delete events in the index files
which means no files are being deleted that have been deleted upstream.

=item B<--tmpdir=s>

Directory for temporary files; should be on the same file system
partition as the C<--target> directory.

=item B<--verbose!>

Defaults to false. Note: Older versions of rrr-client defaulted to
being verbose.

=item B<--verboselog=s>

Path to the logfile to write verbose progress information to.

=back

=head1 DESCRIPTION

Mirror a remote directory based on a set of RECENT* files provided by
the remote server.

=cut

our %Opt;
GetOptions
    (\%Opt,
     @opt,
    ) or pod2usage(1);

if ($Opt{help}) {
    pod2usage(0);
}
pod2usage(1) unless $Opt{source} and $Opt{target};

$ENV{RSYNC_PASSWORD} = $Opt{password} if $Opt{password};
$Opt{verbose} ||= 0;
$Opt{"skip-deletes"} ||=0;

use File::Rsync::Mirror::Recent;
my $rrr = File::Rsync::Mirror::Recent->new
  (
   ignore_link_stat_errors => 1,
   localroot => $Opt{target},
   ($Opt{tmpdir} ? (tempdir => $Opt{tmpdir}) : ()),
   remote => ($Opt{user} ? $Opt{user} . '@' : '') . $Opt{source},
   max_files_per_connection => 20000,
   rsync_options => {
                     compress => 1,
                     links => 1,
                     'safe-links' => 1,
                     times => 1,
                     checksum => 0,
                     timeout       => 30, # do not allow rsync to hang for too long
                     ($Opt{tmpdir} ? ('temp-dir' => $Opt{tmpdir}) : ()),
                    },
   verbose => $Opt{verbose},
   ($Opt{verboselog}    ? (verboselog    => $Opt{verboselog})    : ()),
   ($Opt{runstatusfile} ? (runstatusfile => $Opt{runstatusfile}) : ()),
   # _logfilefordone => "recent-rmirror-donelog.log",
  );

$rrr->rmirror ( "skip-deletes" => $Opt{"skip-deletes"}, loop => 1 );