#!/usr/bin/perl -w

BEGIN {
  unshift @INC, ($::ENV{'BUILD_DIR'} || '/usr/lib/build');
}

use Build;
use Build::Susetags;
use strict;

sub print_pkg($)
{
  my $pkg = shift;

  return if $pkg->{'arch'} eq 'src' || $pkg->{'arch'} eq 'nosrc';
  my $id = sprintf("%s.%s-%d/%d/%d: ",
    $pkg->{'name'},
    $pkg->{'arch'},
    $pkg->{'buildtime'},
    0,
    0);
  print sprintf('F:%s%ssuse/%s/%s',$id,$pkg->{'baseurl'},
    $pkg->{'arch'}, $pkg->{'location'}), "\n";

  print "P:$id".$pkg->{'provides'}."\n";
  print "R:$id".$pkg->{'requires'}."\n";

  my $tag = sprintf("%s-%s-%s %s",
    $pkg->{'name'},
    $pkg->{'version'},
    $pkg->{'release'},
#    $pkg->{'rpm:buildhost'},
    $pkg->{'buildtime'});
  print "I:$id$tag\n";
}

sub callback
{
  my ($pkg, $url) = @_;
  $pkg->{'provides'} = [] unless exists $pkg->{'provides'};
  # add self provides (rpm3 misses that)
  my $n = $pkg->{'name'};
  if(substr($pkg->{'arch'}, -3) ne 'src' && !scalar grep(/^\Q$n\E( =.*)?$/,@{$pkg->{'provides'}}))
  {
    push @{$pkg->{'provides'}}, sprintf("%s = %s-%s", $pkg->{'name'}, $pkg->{'version'}, $pkg->{'release'});
  }
  $pkg->{'provides'} = join(' ', @{$pkg->{'provides'}});
  $pkg->{'requires'} = join(' ', @{$pkg->{'requires'}}) if $pkg->{'requires'};
  $pkg->{'baseurl'} = $url;
  my @data = split(' ', $pkg->{'location'});
  # multi cd support hack
  my $num = $data[0];
  if($pkg->{'baseurl'} =~ /1\/$/ && $num ne 0) {
    $pkg->{'baseurl'} =~ s/1\/$/$num\//;
  }
  $pkg->{'location'} = $data[1];

  print_pkg($pkg);

  return 0;
}

for my $url (@ARGV) {
  my $dir;
  if ($url =~ /^zypp:\/\/([^\/]*)\/?/) {
    use Build::Zypp;
    my $repo = Build::Zypp::parsecfg($1);
    die "can't parse $1\n" unless $repo;
    die "only yast2 repos supported\n" unless $repo->{'type'} eq 'yast2';
    my $name = $repo->{'name'};
    $dir = "/var/cache/zypp/raw/$name/";
  } else {
    $dir = $url;
  }

# a really fucked up system
#  if (-e $url."/yast/order") {
#    if(open(F, '<', $url."/yast/order")) {
#      my $found_products;
#      while(<F>) {
#        chomp;
#        my ($a, $b) = split(/ /);
#        $a =~ s/^\///;
#        if(-e $url.$a)
#        {
#          push @ARGV, $url.$a;
#          $found_products = 1;
#          print STDERR "$url -> $url$a\n";
#        }
#      }
#      close(F);
#      next if $found_products;
#    }
#  }
  # XXX: location is actually defined in content file
  my $packages = $dir.'/suse/setup/descr/packages';
  
  $url .= '/' unless $url =~ /\/$/;

  my @order = ();
  my $pkgs = Build::Susetags::parse($packages,
    { 'Loc' => 'location', 'Prv' => 'provides', 'Req' => 'requires', 'Tim' => 'buildtime' },
    { cb => \&callback, data => $url });
}