package App::ArchLinux::PackagerTools::Cache;
use strictures;

use autodie;
use Function::Parameters;
use Log::Any qw($log);
use CHI;

use App::ArchLinux::PackagerTools::Config;

=head1 NAME

App::ArchLinux::PackagerTools::Cache - Caching functions

=head1 SYNOPSIS

use App::ArchLinux::PackagerTools::Cache;


=head1 DESCRIPTION

# longer description...

=head1 METHODS

=head2 new

 my $cache = App::ArchLinux::PackagerTools::Cache->new();

Returns a new instance.

=cut

method new($class: $context, $deps = {}) {
	$deps->{config} //= App::ArchLinux::PackagerTools::Config->new($context);
	return $class->new_no_defaults($context, $deps);
}

method new_no_defaults($class: $context, $deps = {}) {
	return $context->{$class} if defined $context->{$class};

	my $self = {};
	bless $self, $class;
	$self->{deps} = $deps;

	my $config = $deps->{config}->get_config();

	$self->{CHI} = CHI->new(
		driver => 'File',
		root_dir => $config->{cache}->{root_dir},
	);
	$context->{$class} = $self;
	return $self;
}

=head2 Public Methods

=cut

=head3 compute

 my $value = $cache->compute($key, $timeout, $sub);

If a value exists for the cache key $key, it is returned. Otherwise, $sub is
executed to compute the value and it is stored in the cache with the specified
timeout.

=cut

method compute($key, $timeout, $sub) {
	return $self->{CHI}->compute($key, $timeout, $sub);
}

1;

__END__