#!/usr/bin/perl -w
use strict;

use lib qw(blib/lib blib/arch);
# BEGIN { sub POE::Kernel::TRACE_EVENTS () { 1 };}
use POE qw(Session);
use POE::Component::IKC::Client;
use POE::Component::IKC::Responder;

my $NAME="Client$$";

my $first=1;

### Send a request to the time-server
sub server_io
{
    my($kernel, $msg)=@_;
}

$|++;
print "Creating sessions...\n";

create_ikc_client(
            port=>31337,            
            name=>$NAME,
            subscribe=>[qw(poe://*/timeserver)],
);

POE::Session->new(
        _start=>sub 
        {
            my($kernel)=$_[KERNEL];
            $kernel->sig('USR1', 'hup');
            $kernel->alias_set('me');

            create_ikc_responder(); # make sure the Responder exists
            $kernel->post('IKC', 'publish', 'me', [qw(pulse)]);
            $kernel->post('IKC', 'monitor', '*', 
                {register=>'remote_register', unregister=>'remote_unregister',
                 subscribe=>'remote_subscribe'});
        },

        ### Called when we connect to the time server
        remote_register=>sub
        {
            my($kernel, $name, $real_name, $real)=@_[KERNEL, ARG0, ARG1, ARG2];
            warn "* connection to $real_name", ($real ? '' : ' (alias)'), "\n";
            return unless $real_name eq 'Pulse';
            print "***** Connected to $name ($real_name)\n";
            $kernel->yield('time');
        },

        ### Called when we connect to the time server
        remote_subscribe=>sub
        {
            my($kernel, $name, $real_name, $what)=@_[KERNEL, ARG0, ARG1, ARG4];

            return unless $real_name eq 'Pulse';
            $kernel->post('poe://*/timeserver', 'connect', 
                            "poe://$NAME/me/pulse");
            print "***** Subscribed to things on $real_name\n";
        },
        ### Called when we disconnect to the time server
        remote_unregister=>sub
        {
            my($kernel, $name, $real_name, $real)=@_[KERNEL, ARG0, ARG1, ARG2];
            warn "* disconnection from $real_name", ($real ? '' : ' (alias)'), "\n";
            return unless $real_name eq 'Pulse';
            die "****** Disconnected from $real_name\n";
        },

        hup=>sub
        {
            my($kernel)=$_[KERNEL];
            print "Got USR1\n";
            $kernel->post('poe://Pulse/timeserver', 'disconnect', 
                          "poe://$NAME/me/pulse");
            return 1;
        },
        # output a . when the pulse is sent
        # output a + if it took longer then a second to get from 
        # the timerserver
        pulse=>sub { print ($_[ARG0] eq localtime() ? '|' : '+'); },

        'time'=>sub 
        {
            my($kernel, $time)=@_[KERNEL, ARG0];
            if($time) {
                print "\n|||||| Foreign time is $time\n";
                $kernel->delay('time', 60);
            } else {
                $kernel->call('IKC', 'call',
                                 'poe://Pulse/timeserver/time', '', 
                                 'poe:/me/time');
            }
        },
    );

print "Running client...\n";
$poe_kernel->run();