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package Iurt::Config;

use base qw(Exporter);
use RPM4::Header;
use Data::Dumper;
use MDK::Common;
use Iurt::Util qw(plog);
use strict;
use Sys::Hostname;
use File::lockf;

our @EXPORT = qw(
    config_usage
    config_init
    get_date
    get_maint
    get_date
    get_prefix
    get_author_email
    check_arch
    check_noarch
    get_package_prefix
    get_mandatory_arch
    get_target_arch
    %arch_comp
);

our %arch_comp = (
    'i586' => { 'i386' => 1, 'i486' => 1, 'i586' => 1 },
    'i686' => { 'i386' => 1, 'i486' => 1, 'i586' => 1, 'i686' => 1 },
    'x86_64' => { 'x86_64' => 1 },
    'ppc' => { 'ppc' => 1 },
    'ppc64' => { 'ppc' => 1, 'ppc64' => 1 },
    'armv5tejl' => { 'armv5tl' => 1 },
    'armv5tel' => { 'armv5tl' => 1 },
    'armv5tl' => { 'armv5tl' => 1 },
    'armv7l' => { 'armv5tl' => 1, 'armv7hl' => 1, 'armv7hnl' => 1 },
);


=head2 config_usage($config_usage, $config)

Create an instance of a class at runtime.
I<$config_usage> is the configuration help,
I<%config> is the current configuration values
Return true.

=cut

sub config_usage {
    my ($config_usage, $config) = @_;
	print "\nIurt configuration keywords:\n\n";
    $Data::Dumper::Indent = 0;
    $Data::Dumper::Terse = 1;
    foreach my $k (sort keys %$config_usage) {
	print "  $k: $config_usage->{$k}{desc}\n\t\tdefault: ",
	       Data::Dumper->Dump([ $config_usage->{$k}{default} ]),
	       ", current: ", Data::Dumper->Dump([ $config->{$k} ]), "\n";
    }
    print "\n\n";
}

=head2 config_init($config_usage, $config, $run)

Create an instance of a class at runtime.
I<$config_usage> is the configuration help,
I<%config> is the current configuration values
I<%run> is the current running options
Return true.

=cut

sub config_init {
    my ($config_usage, $config, $run) = @_;
    
    foreach my $k (keys %$config_usage) {
	ref $config_usage->{$k}{default} eq 'CODE' and next;
	if (defined($run->{config}{$k})) {
	    $config->{$k} = $run->{config}{$k};
        } elsif (!defined($config->{$k})) {
	    $config->{$k} = $config_usage->{$k}{default};
	}
    }
    # warly 20061107
    # we need to have all the default initialised before calling functions, so this
    # cannot be done in the same loop
    foreach my $k (keys %$config_usage) {
	ref $config_usage->{$k}{default} eq 'CODE' or next;
	my $a = $config_usage->{$k}{default}($config, $run);
	if (defined($run->{config}{$k})) {
	    $config->{$k} = $run->{config}{$k};
        } elsif (!defined($config->{$k})) {
	    $config->{$k} = $a;
	}
    }
}


=head2 get_date($shift)

Create a string based on the current date and time
I<$shift> number of second to shift the date
Return date-time and date

=cut

sub get_date {
    my ($o_shift) = @_;
    my ($sec, $min, $hour, $mday, $mon, $year) = gmtime(time() - $o_shift);
    $year += 1900;
    my $fulldate = sprintf "%4d%02d%02d%02d%02d%02d", $year, $mon+1, $mday, $hour, $min, $sec;
    my $daydate = sprintf "%4d%02d%02d", $year, $mon+1, $mday;
    $fulldate, $daydate;
}

sub get_prefix {
    my ($luser) = @_;
    my $hostname = hostname();
    my ($fulldate) = get_date();
    my ($host) = $hostname =~ /([^.]*)/;
    join('.', $fulldate, $luser, $host, $$) . '_';
}

sub get_package_prefix {
    my ($rpm) = @_;
    my ($prefix1) = $rpm =~ /^(\d{14}\.\w+\.\w+\.\d+)_/;
    my ($prefix2) = $rpm =~ /^(\@\d+:)/;
    "$prefix1$prefix2";
}

sub get_maint {
    my ($run, $srpm) = @_;
    my ($srpm_name) = $srpm =~ /(.*)-[^-]+-[^-]+\.[^.]+$/;
    $srpm_name ||= $srpm;
    if ($run->{maint}{$srpm}) {
	return $run->{maint}{$srpm}, $srpm_name;
    }
    my $maint = `GET 'http://maintdb.mageia.org/$srpm_name'`;
    if ($?) {
	return 'NOT_FOUND';
    }
    chomp $maint;
    $run->{maint}{$srpm} = $maint;
    $maint, $srpm_name;
}

sub get_author_email {
    my ($user) = @_;
    my $authoremail = $user . ' <' . $user . '>';

    return $authoremail;
}

sub check_noarch {
    my ($rpm) = @_;
    my $hdr = RPM4::Header->new($rpm);

    # Stupid rpm doesn't return an empty list so we must check for (none)

    my ($build_archs) = $hdr->queryformat('%{BUILDARCHS}');

    if ($build_archs ne '(none)') {
	($build_archs) = $hdr->queryformat('[%{BUILDARCHS} ]');
	my @list = split ' ', $build_archs;
	return 1 if member('noarch', @list);
    }

    return 0;
}

sub check_arch {
    my ($rpm, $arch) = @_;
    my $hdr = RPM4::Header->new($rpm);

    # Stupid rpm doesn't return an empty list so we must check for (none)

    my ($exclusive_arch) = $hdr->queryformat('%{EXCLUSIVEARCH}');

    if ($exclusive_arch ne '(none)') {
	($exclusive_arch) = $hdr->queryformat('[%{EXCLUSIVEARCH} ]');
	my @list = split ' ', $exclusive_arch;
	return 0 unless member($arch, @list);
    }

    my ($exclude_arch) = $hdr->queryformat('[%{EXCLUDEARCH} ]');

    if ($exclude_arch ne '(none)') {
	($exclude_arch) = $hdr->queryformat('[%{EXCLUDEARCH} ]');
	my @list = split ' ', $exclude_arch;
	return 0 if member($arch, @list);
    }

    return 1;
}

sub get_mandatory_arch {
    my ($config, $target) = @_;
    find { ref($_) eq 'ARRAY' } $config->{mandatory_arch},
	(ref($config->{mandatory_arch}) eq 'HASH' ? ($config->{mandatory_arch}{$target}, $config->{mandatory_arch}{default}) : ()), [];
}

sub get_target_arch {
    my ($config, $target) = @_;
    find { ref($_) eq 'ARRAY' } $config->{arch},
	(ref($config->{arch}) eq 'HASH' ? ($config->{arch}{$target}, $config->{arch}{default}) : ()), [ keys %{$config->{bot}} ];
}

1;