#!/usr/bin/perl -w
use strict;
use warnings;
use MP3::Tag;
use LWP::UserAgent;

my $dir = "./";
my $ua = LWP::UserAgent->new();
my $url = ""; ## <<< url to get files from
my $buffer;

my @files;
my $response = $ua->get($url);
if($response->is_success){
    my $con = $response->content;
    while ($con =~ /<a href=\"(.*?)\.mp3\">/g){
        push @files, "$1.mp3";
    }
}

foreach my $file(@files) {
    print "Reading $file...";
    $ua->get($url.$file, ':content_cb' => \&first_chunk, ':read_size_hint' => 10240 );
    
    sub first_chunk {
    my ($chunk, $response_ref, $protocol_ref) = @_;
    $buffer .= $chunk;
    die() if length($buffer) >= 10240;
    }
    
    ## Clean filename
    $file =~ tr/+/ /;
    $file =~ s/%([a-fA-F0-9]{2,2})/chr(hex($1))/eg;
    $file =~ s/<!--(.|\n)*-->//g;
    
    ## Save file
    open FILE, ">$file", or die $!;
    print FILE $buffer;
    close FILE;
    print " Done!\n";
    
    ## Clear buffer
    $buffer = "";
    
    ## Find tags
    my $filename = "$dir$file";
    my $mp3 = MP3::Tag->new($filename);
    my ($song, $track, $artist, $album) = $mp3->autoinfo();

    ## Print tag: Artist - Album (if any) - Song
    unless ($album) {
        if ($artist) {
            $album = " - ";
        }
    } else {
        $album = " - $album - ";
    }
    print "$artist$album$song\n";
}