#!e:/Server/xampp/perl/bin/perl.exe -w 
use strict;
use CGI::Carp qw(fatalsToBrowser warningsToBrowser);
use CGI;
my $cgi = CGI->new();
print $cgi->header();
warningsToBrowser(1); # dies ist wichtig und muss nach dem Header kommen!
use warnings;

use LWP::RobotUA;
use HTML::LinkExtor;
use HTML::TokeParser;
use URI::URL;

use Data::Dumper; # for show and troubleshooting

my $url = "http://www.mysite.com/forums/";
my $lp = HTML::LinkExtor->new(\&wanted_links);
my $ua = LWP::RobotUA->new('my-robot/0.1', 'me@foo.com'); 
my $lp = HTML::LinkExtor->new(\&wanted_links); 



print "Content-type: text/html\n\n"; 
print "Surfer variablen ua PRINT: $ua \n"; 
print "Surfer variablen lp PRINT: $lp \n"; 

my @links; 
get_threads($url); 

foreach my $page (@links) { # this loops over each link collected from the index 
   my $r = $ua->get($page); 
   if ($r->is_success) { 
      my $stream = HTML::TokeParser->new(\$r->content) or die "Parse error in $page: $!"; 
      # just printing what was collected 
      print Dumper get_thread($stream); 

print "Content-type: text/html\n\n"; 
print "surfer variablen stream PRINT: $stream \n"; 

	 } else {
		warn $r->status_line;
	 }
}

sub get_thread {
	my $p = shift;
	my ($title, $name, @thread);
		while (my $tag = $p->get_tag('a','span')) {
		if (exists $tag->[1]{'class'}) {
			if ($tag->[0] eq 'span') {
				if ($tag->[1]{'class'} eq 'name') {
					$name = $p->get_trimmed_text('/span');
				} elsif ($tag->[1]{'class'} eq 'postbody') {
					my $post = $p->get_trimmed_text('/span');
					push @thread, {'name'=>$name, 'post'=>$post};
				}
			} else {
				if ($tag->[1]{'class'} eq 'maintitle') {
					$title = $p->get_trimmed_text('/a');
				}
			}
		}
	}
	return {'title'=>$title, 'thread'=>\@thread};
}

sub get_threads {
	my $page = shift;
	my $r = $ua->request(HTTP::Request->new(GET => $url), sub {$lp->parse($_[0])});
	# Expand URLs to absolute ones
	my $base = $r->base;
	return [map { $_ = url($_, $base)->abs; } @links];
}

sub wanted_links {
	my($tag, %attr) = @_;
	return unless exists $attr{'href'};
	return if $attr{'href'} !~ /^viewtopic\.php\?t=/;
	push @links, values %attr;
}