# Blosxom Plugin: recentwritebacks_tree
# Author(s): typester <typester@unknownplace.org>
# Version: 1.0
# Blosxom Home/Docs/Licensing: http://www.blosxom.com/

package recentwritebacks_tree;

# --- Configurable variables -----------
my $data_dir = "$blosxom::plugin_state_dir/writeback";
my $db_dir = "$blosxom::datadir";
#my $data_dir = "/virtual/typester/public_html/blosxom/plugins/state/writeback";
#my $db_dir = "/virtual/typester/public_html/blosxom/db";
my $wb_extension = "wb";
my $db_extension = "txt";

# comments
my $cm_entry = 3;
my $cm_num = 5;
# trackbacks
my $tb_entry = 3;
my $tb_num = 3;
# --------------------------------------

use FileHandle;
use vars qw/$cm_list $tb_list @wb_list/;
my $fh = new FileHandle;

sub start {
  #return 0 if ($blosxom::path_info =~ /\./);
  @wb_list = &createlist($data_dir);
  $cm_list =  &getwritebacks("comment", $cm_entry, $cm_num);
  $tb_list = &getwritebacks("excerpt", $tb_entry, $tb_num);
  return 1;
}

sub getwritebacks {
  my ($mode, $entrynum, $num) = (@_);
  my $count = 0;
  my $entry = 0;
  my @tmp = ();
  my $ret = "<ul>\n";
  
  foreach my $file (@wb_list) {
    @tmp = ();
    $i = 0;
    if($fh->open($file)) {
      foreach (<$fh>) {
        if($_ =~ /-----$/) {
          $i++;
        }else {
          $tmp[$i] .= $_;
        }
      }
      $fh->close;
    }
    $count = 0;
    my @names = ();
    #my @dates = ();
    foreach (reverse(@tmp)) {
      my ($entrytitle, $body, $url, $name, $date, @dates) = ('', '', '', '', '', ());
      if($_ =~ /[\r\n]+$mode:(.+)/) {
        $count++;
        $body = $1;
        if($count == 1) {
          $entrytitle = &gettitle($file);
          $entry++;
        }
      }
      if($_ =~ /[\r\n]+blog_name:(.+)/ and $_ =~ /[\r\n]+url:(.+)/) {
        $url = $1;
      }
      if($_ =~ /^name:(.+)/ or $_ =~ /[\r\n]+blog_name:(.+)/) {
        $name = $1;
      }else {
        $name = "no name";
      }
      if($body ne '') {
        if($entrytitle ne '') {
          $ret .= "<li>$entrytitle\n";
        }
        if($_ =~ /[\r\n]+date:(\d+)/) {
          @dates = localtime($1);
          $date = sprintf("%02d/%02d %02d:%02d", $dates[4]+1, $dates[3], $dates[2], $dates[1]);
        }
        if($url ne '') {
          push(@names, "<li>$date from <a href=\"$url\">$name</a></li>\n");
        }else {
          push(@names, "<li>$date by $name</li>\n");
        }
      }
      last if($count >= $num);
    }
    if($names[0] ne '') {
      $ret .= "<ul>\n";
      foreach my $name (reverse(@names)) {
        $ret .= $name;
      }
      $ret .= "</ul>\n</li>\n";
    }

    last if($entry >= $entrynum);
  }
  $ret .= "</ul>\n";
  return $ret;
}

sub gettitle {
  my $file = $_[0];
  my $ret = '';

  $file =~ s/$data_dir/$db_dir/;
  $file =~ s/wb$/txt/;

  if($fh->open($file)) {
    $ret = <$fh>;
    $fh->close;
  }
  chomp($ret);

  my $url = $blosxom::url;
  $file =~ s/$db_dir/$url/;
  $file =~ s/txt$/html/;
  $ret = "<a href=\"$file\" title=\"$ret\">$ret</a>";
  return $ret;
}

sub getdates {
  my @files = @_;
  my @dates = ();

  foreach my $file (@files) {
    my $mtime = (stat($file))[9];
    push(@dates, $mtime);
  }
  return @dates;
}

sub getfiles {
  my $dir = $_[0];
  my @files = ();
  my @ret = ();

  $dir .= "/" if($dir =~ /[^\/]$/);
  if(opendir(DIR, $dir)) {
    @files = readdir(DIR);
    closedir(DIR);
  }

  foreach my $file (@files) {
    next if($file eq '.' or $file eq '..');
    if(-d "$dir$file" and $file ne '') {
      my @subdir = &getfiles("$dir$file");
      @ret = (@ret, @subdir);
    }else {
      push(@ret, "$dir$file");
    }
  }
  return @ret;
}

sub createlist {
  my @files = &getfiles($_[0]);
  my @dates = &getdates(@files);
  my %hash = {};
  my @ret = ();
  my $i = 0;

  foreach my $date (@dates) {
    $hash{$date} = $files[$i];
    $i++;
  }

  @dates =  sort {$b <=> $a} @dates;
  foreach my $date (@dates) {
    push(@ret, $hash{$date});
  }
  return @ret;
}

1;