#!/usr/bin/perl

use strict;
use warnings;
use RPM2;
use Data::Dumper;

my $rpm_flags =  RPM2->vsf_nodsa;
my $build_dir  = "/builds/RPMS";
my @repositories = qw( 
	/mirrors/centos/4/updates/i386/RPMS/
	/mirrors/centos/4/os/i386/CentOS/RPMS/
	/mirrors/dag/redhat/el4/en/i386/dag/RPMS/
	/mirrors/atrpms/el4-i386/atrpms/stable/
	/mirrors/dries/redhat/el3/en/i386/RPMS.dries
	/mirrors/fedora/updates/3/i386/
	/mirrors/fedora/3/i386/os/Fedora/RPMS/
	/builds/rpms/RPMS/i686/
	/builds/rpms/RPMS/i586/
	/builds/rpms/RPMS/i386/
	/builds/rpms/RPMS/noarch/
	);

opendir RPMS, $build_dir or die "Couldn't opendir $build_dir";
my %rpms = map { my $x = RPM2->open_package("$build_dir/$_", $rpm_flags); $x->tag('NAME') => $x; } grep { /\.rpm$/ } readdir RPMS;
closedir RPMS;

my %repos;
foreach my $repo (reverse @repositories)
{
    my %temp_repo = map { $_ => $repo } grep { /\.rpm$/ } readdir RPMS if ( opendir RPMS, $repo );
    closedir RPMS;
    %repos = (%repos, %temp_repo);
}

foreach my $rpm ( sort keys %rpms )
{
    my (@headers, $header);

    my $rpmfix = $rpm;
    $rpmfix =~ s@\+@\\+@g;
    @headers = ();
    foreach my $file ( grep { /^$rpmfix-[0-9].*\.rpm$/ } keys %repos )
    {
        $header = RPM2->open_package("$repos{$file}/$file", $rpm_flags);
        if ($header ge $rpms{$rpm} || $header->filename =~ m#/centos.*/(os|updates)/#)
        {
            push @headers, $header;
        }
    }
    @headers = reverse sort { $a cmp $b } @headers;
    if (grep { $_->filename =~ m#/centos/[\d.]+/updates/# } @headers)
    {
        @headers = grep { $_->filename !~ m#/centos/[\d.]+/os/# } @headers;
    }
    if (grep { $_->filename =~ m#/centos/[\d.]+/(updates|os)/# || $_->filename =~ m#/dag/# } @headers)
    {
        @headers = grep { $_->filename !~ m#/fedora/# } @headers;
        @headers = grep { $_->filename !~ m#/atrpms/# } @headers;
    }
    if ($#headers < 0)
    {
        print "$rpm\n";
        print "  ***** can't find $rpm in any repository *****\n";
    }
    elsif ( $headers[0]->filename !~ m#/centos/[\d.]+/(updates|os)/#  || $headers[0] ne $rpms{$rpm} )
    {
        if (grep { $_ ne $rpms{$rpm} } @headers)
        {
            print "$rpm\n";
            foreach $header ( @headers)
            {
                my $path = $header->filename;
                $path =~ s@^(.*)/.*@$1@;
                print " " . ($header eq $rpms{$rpm} ? "** " : "-- ") . $header->as_nvre . " ($path)\n";
            }
        }
    }
}