#!/usr/bin/perl -w

use strict;
use IO::Socket;
use IO::Select;

#variables
my $LISTEN_PORT = 5152;
my $user;
my @users;
my $fh;
my @ready;

#open a new socket
my $listening_socket = IO::Socket::INET->new(
                            LocalPort => $LISTEN_PORT, 
                            Proto => 'tcp',
                            Listen => 1,
                            Reuse => 1
) or die "socket: $@";

my $select = new IO::Select($listening_socket);

#wait for a client to connect to the server
print "Awaiting TCP messages on port $LISTEN_PORT\n" if $listening_socket;

while(@ready = $select->can_read) {
    foreach $fh (@ready) {
        if($fh == $listening_socket) {
            
            #Create a new socket and get the user ID
            my $new = $listening_socket->accept;
            $new->recv($user, 80);
            
            #Check the newly connected user for copies
            if (my $new_user = grep($user, @users)) {
                
            }
            else {
                $select->add($new);
                push(@users, $user);
                $new->send("Hello\n");
                $new->send("@users");
            }
        }
        else {
            # Process socket
            # Maybe we have finished with the socket
            $select->remove($fh);
            $fh->close;
        }
    }
}

print "END\n";