package server;

use warnings;
use strict;

use Data::Dump qw(dump);
use YAML qw();

our $base_dir = '/srv/pxelator';

use ties;

tie our $ip,      'ties', 'server_ip' => '172.16.10.1';
tie our $netmask, 'ties', 'netmask'   => '255.255.255.0';
tie our $bcast,   'ties', 'bcast'     => '172.16.10.254';
tie our $ip_from, 'ties', 'ip_from'   => 10;
tie our $ip_to,   'ties', 'ip_to'     => 100;
tie our $domain,  'ties', 'domain'    => 'pxelator.lan';
tie our $new_clients, 'ties', 'new_clients' => $ip_to - $ip_from;

if ( my $dev = $ENV{DEV} ) {
	my $ifconfig = `ifconfig $dev`;
	die "can't ifconfig $dev" unless $ifconfig;
	$ip      = $1 if $ifconfig =~ m/inet addr:(\S+)/s;
	$netmask = $1 if $ifconfig =~ m/Mask:(\S+)/s;
	$bcast   = $1 if $ifconfig =~ m/Bcast:(\S)/s;
}

warn "DEV $ip $bcast $netmask";

our $conf = "$base_dir/conf";
mkdir $conf unless -e $conf;

sub conf {
	warn "## conf $conf";
	$conf;
}

use Module::Refresh qw//;
sub refresh {
	Module::Refresh->refresh;
	my $from = (caller(1))[3];
	$from =~ s{^(\w+)::.+$}{$1};
	my $eval = '$' . $from . '::debug = server::debug();';
	warn "refresh $eval\n";
	eval $eval;
	warn $@ if $@;
};

mkdir $_ foreach grep { ! -d $_ } map { "$conf/$_" } ( 'ip', 'mac' );

use File::Slurp;
sub shared {
	my ($name, $value) = @_;

	my $path ="$conf/$name";
	if ( defined $value ) {
		write_file $path, $value;
		warn "update $path = $value";
	} else {
		$value = read_file $path if -e $path;
	}
	return $value;
}

sub conf_default { shared($_[0]) || $_[1] }

sub debug { shared('debug', @_) || 0 }

sub as_hash_for {
	my $ip = shift;

	my $server;
	map { $server->{ $_ } = eval '$server::' . $_ } ( 'ip', 'netmask', 'bcast', 'domain', 'ip_from', 'ip_to', 'new_clients' );

	my $server_path = "$server::conf/ip/$ip/server.yaml";
	$server =  YAML::LoadFile $server_path if -e $server_path;

	return $server;
}

warn "loaded";

1;
