#!/usr/bin/perl

use strict;
use IO::All;
use LWP::Simple;
use Data::Dumper;
use HTML::Entities;
use Template::Extract;

my $base = 'http://perlmonks.org/';
my $extor = Template::Extract->new;

my $default_next_template = qr'<td align=right width=100><a href="(.+?)">Next entries--></a>&nbsp;</td></tr></table>';
my $default_desc_template = qr'<data>.+?<field name="doctext">(.+?)</field>.+?</data>'s;
my $default_template = <<'.';
[% FOREACH record %][% ... %]
<tr class   = "post_head">[% ... %]
  <td>[% ... %]
    <a HREF="?node_id=[% node_id %]">[% title %]</a><br />[% ... %]
    on[% ... %]
    by <a HREF="[% ... %]">[% author %]</a>[% ... %]
  </td>[% ... %]
</tr>
[% END %]
.

my %profile = (
    code => {
	url => $base."?node=Code Catacombs",
        desc_template => qr'<field name="codedescription">(.+?)</field>'s,
    },
    poetry => {
	url => $base.'?node=Perl Poetry',
    },
    cooluses => {
	url => $base.'?node=Cool Uses for Perl',
    },
    obfu => {
	url => $base.'?node=Obfuscated Code',
    },
    snippets => {
	url => $base.'?node=Snippets Section',
	next_template => qr'&nbsp;&nbsp;<A HREF="(.+?)">Next 20--&gt;</A>',
        desc_template => qr'<field name="snippetdesc">(.+?)</field>'s,
	template => <<'.',
<UL>[% FOREACH record %]<li><a HREF="?node_id=[% node_id %]">[% title %]</a>[% ... %]by[% ... %]<a HREF="[% ... %]">[% author %]</a>[% END %]<BR><BR>
.
    },
);

sub clean_data {
  my $data = shift;
  $$data =~ s/\r\n/\n/sg;
  $$data =~ s/^\n+//s;
  $$data =~ s/\n+$/\n/s;
  $$data = decode_entities($$data);
}

mkdir "./perlmonks";
mkdir "./perlmonks/$_" for 0..9;
foreach my $p (keys %profile){
  while(1){
    print "<< $p >>\n";
    print $profile{$p}->{url},$/;

    my $doc = get($profile{$p}{url});
    my $rec = $extor->extract(
			      (defined($profile{$p}->{template}) ?
			       $profile{$p}->{template} : $default_template)
			      => $doc
			     );

    if(defined($profile{$p}->{next_template})){
      $doc =~ m,$profile{$p}->{next_template},;
      $profile{$p}->{url} = $1 ? $base . $1 : undef;
    }
    else {
      $doc =~ m,$default_next_template,;
      $profile{$p}->{url} = $1 ? $base . $1 : undef;
    }

    my $dup_count = 0;
    foreach my $r (@{$rec->{record}}){
      my $lc = substr($r->{node_id}, length($r->{node_id})-1);
      if( -e "./perlmonks/$lc/$r->{node_id}" ){
	$dup_count++;
	next;
      }
      print '-- ', join(q/  /, @{$r}{qw(title author node_id)}), $/;


      # CODE
      my $data = get($base.'?node_id='.$r->{node_id}.';displaytype=displaycode');
      clean_data(\$data);
      next unless $data;
      mkdir "./perlmonks/$lc/$r->{node_id}";
      io("./perlmonks/$lc/$r->{node_id}/code")->print($data);

      # META
      io("./perlmonks/$lc/$r->{node_id}/meta")
	  ->print(decode_entities($r->{title}).$/.$r->{author});

      # DESCRIPTIONS
      $data = get($base.'?displaytype=xml;node_id='.$r->{node_id});
      if($profile{$p}->{desc_template}){
	($data) = ($data =~ m($profile{$p}->{desc_template}));
      }
      else {
	($data) = ($data =~ m($default_desc_template));
      }
      clean_data(\$data);
      io("./perlmonks/$lc/$r->{node_id}/desc")->print($data);
#      last;
    }
    if($dup_count > @{$rec->{record}}/2){
      print "No further updates from $p\n";
      last;
    }

  }
}


__END__