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package SlackBuild::Registry::Record;
use strict;
use warnings;
use Carp;
use SlackBuild::Base qw(package arch build date filename);
use SlackBuild::Registry::Version;
use Scalar::Util qw(blessed);

=head2 new

    $x = new SlackBuild::Registry::Record(PACKAGE,
                     arch=>X, version=>Y, build=>Z, date=>D, filename=>F)
    
=cut

sub new {
    my $class = shift;
    my $self = bless {}, $class;
    $self->build(1);
    if (my $v = shift) {
	$self->package($v);
	if (@_) {
	    croak "bad number of arguments" if (@_ % 2);
	    local %_ = @_;
	    while (my ($k,$v) = each %_) {
		$self->${\$k}($v);
	    }
	}
    }
    return $self;
}

sub version {
    my $self = shift;
    if (@_) {
	croak "too many arguments" if @_ > 1;
	$self->{version} = new SlackBuild::Registry::Version(shift);
    }
    return $self->{version};
}

sub store {
    my $self = shift;
    croak "store not implemented";
}

sub as_string {
    my $self = shift;
    return $self->package . '-'
	   . ($self->version ? $self->version : '*') . '-'
	   . ($self->arch ? $self->arch : '*') . '-'
	   . ($self->build || '1');
}

sub cmp {
    my ($self, $other) = @_;

    my $v;
    if ($v = ($self->package || '') cmp ($other->package || '')) {
	return $v;
    }
    if ($self->version <=> $other->version) {
	return $v;
    }
    if ($self->arch && $other->arch
	&& ($v = $self->arch cmp $other->arch)) {
	return $v;
    }
    return ($self->build || 1) <=> ($other->build || 1);
}   

use overload
    '""' => sub { shift->as_string },
    'cmp' => sub {
	my ($self, $other, $swap) = @_;
	my $res = $self->cmp($other);
	return $swap ? -$res : $res;
    },
    '<=>' => sub {
	my ($self, $other, $swap) = @_;
	my $res = $self->cmp($other);
	return $swap ? -$res : $res;
    },
    '==' => sub {
	my ($self, $other) = @_;
	my $res = $self->cmp($other) == 0;
    },
    '!=' => sub {
	my ($self, $other) = @_;
	my $res = $self->cmp($other) != 0;
    },
    '<' => sub {
	my ($self, $other, $swap) = @_;
	my $res = $self->cmp($other) < 0;
	return $swap ? !$res : $res;
    },
    '<=' => sub {
	my ($self, $other, $swap) = @_;
	my $res = $self->cmp($other) <= 0;
	return $swap ? !$res : $res;
    },
    '>' => sub {
	my ($self, $other, $swap) = @_;
	my $res = $self->cmp($other) > 0;
	return $swap ? !$res : $res;
    },
    '>=' => sub {
	my ($self, $other, $swap) = @_;
	my $res = $self->cmp($other) >= 0;
	return $swap ? !$res : $res;
    };

1;

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