MPD pause on song change

mpd-pause-on-song-change.pl

#!/usr/bin/perl

use strict;
use warnings;
use utf8;
use IO::Socket::INET6;

my $current_song;

if (my $server = IO::Socket::INET6->new(PeerAddr => ($ARGV[0] or 'localhost'), PeerPort => ($ARGV[1] or '6600'), Proto => 'tcp', Timeout => 5)) {
    print $server "currentsong\n";
    print $server "idle player\n";

    while (<$server>) {
        if (/^file: (.*)/) {
            if ($current_song) {
                if ($1 ne $current_song) {
                    print $server "noidle\n";
                    print $server "pause 1\n";
                    print $server "close\n";
                }
            } else {
                $current_song = $1;
            }
        } elsif (/^changed:/) {
            print $server "currentsong\n";
            print $server "idle player\n";
        }
    }
}