#!/usr/bin/perl
use strict;

BEGIN { require 'common.pl' }

my $source_file_name = shift;
my $result_file_name = shift;
my $status_file_name = shift;
my $tbt_file_name_stem = shift;

my %data;
my %pattern;
for_each_data_file (sub ($) {
  my $data_file_name = shift;
  warn "$data_file_name...\n";
  load_data_file ($data_file_name, \%data, \%pattern);
});
my @pattern = sort {length $b <=> length $a} keys %pattern;

my $source_text;
{
  warn "$source_file_name...\n";
  open my $source_file, '<:utf8', $source_file_name
      or die "$0: $source_file_name: $!";
  local $/ = undef;
  $source_text = <$source_file>;
}

my $part = 'cover';
my $status = {};
my $all_status = {};
my $tbt_added = {};

open my $tbt_file, '>:utf8', $tbt_file_name_stem . '.dat' or
    die "$0: $tbt_file_name_stem.dat: $!";
open my $part_tbt_file, '>:utf8', $tbt_file_name_stem . '-' . $part . '.dat' or
    die "$0: $tbt_file_name_stem-$part.dat: $!";

warn "Generating...\n";
$source_text =~ s{(<(?>p(?>re)?|li|d[td]|t[dh]|h[1-6])(?>\s[^>]*)?>)((?>(?!</?(?>p(?>re)?|li|d(?>[tdl]|iv)|t(?>[dr]|h(?>ead)?|able|body|foot)|h[1-6r]|ul|ol)(?>\s[^>]*)?>).)+)}
{
  my ($tag, $text) = ($1, $2);
  my $n_text = normalize ($text);

  if ($tag =~ /^<h2 id=(\w+)/) {
    $part = $1;
    open $part_tbt_file, '>:utf8', $tbt_file_name_stem . '-' . $part . '.dat' or
        die "$0: $tbt_file_name_stem-$part.dat: $!";
  }
  
  if (length $n_text) {
    my $ja_text = $data{$n_text};
    
    $status->{all}++;
    $all_status->{$part}->{all}++;
    
    if (defined $ja_text) {
      $status->{ja}++;
      $all_status->{$part}->{ja}++;
      add_class ($tag, 'has-ja-translation') .
      q[<span class=en-original lang=en>] . escape_id ($text, 'en-') .
      q[</span>] .
      q[<span class=ja-translation lang=ja>] . $ja_text . q[</span>];
    } else {
      my $v;
      for my $pattern (@pattern) {
        if ($n_text =~ /^$pattern$/) {
          $status->{ja}++;
          $all_status->{$part}->{ja}++;
          $v = add_class ($tag, 'has-ja-translation') .
              q[<span class=en-original lang=en>] .
              escape_id ($text, 'en-') . q[</span>] .
              q[<span class=ja-translation lang=ja>] .
              replace_pattern2 ($pattern{$pattern}, $1, $2, $3, $4, $5) .
              q[</span>];
          last;
        }
      }

      unless (defined $v) {
        $v = add_class ($tag, 'no-ja-translation') . $text;
        
        $text =~ s/^\s+//;
        $text =~ s/\s+\z//;
        $text =~ s/\x0D?\x0A(?:\x0D?\x0A)+/\n/g;
        unless ($tbt_added->{$text}) {
          print $tbt_file ($text);
          print $tbt_file ("\n\n");
          print $part_tbt_file ($text);
          print $part_tbt_file ("\n\n");
          $tbt_added->{$text} = 1;
        }
      }

      $v;
    }
  } else {
    $1 . $2;
  }
}ges;
$source_text =~ s{(<(?>link|img|script)\s[^>]+>)}{
  my $tag = $1;
  my $n_text = normalize ($tag);
  my $ja_text = $data{$n_text};
  if (defined $ja_text) {
    $ja_text;
  } else {
    $tag;
  }
}ges;

$source_text =~ s{\[\[([A-Z ]+):([^]]+)\]\]}
{<em class=rfc2119 title="$1">$2</em>}gs;

#$source_text =~ s[<title>][<base href="http://www.whatwg.org/specs/web-apps/current-work/"><title>];

{
  warn "$result_file_name...\n";
  open my $result_file, '>:utf8', $result_file_name
      or die "$0: $result_file_name: $!";
  print $result_file $source_text;
}

{
  my $time = time;
  my @item = ($time, $status->{ja}, $status->{all});
  for my $part (qw(cover introduction infrastructure dom semantics browsers
                   editing comms syntax rendering no)) {
    push @item, $all_status->{$part}->{ja};
    push @item, $all_status->{$part}->{all};
  }

  open my $status_file, '>>', $status_file_name
      or die "$0: $status_file_name: $!";
  print $status_file join "\t", @item;
  print $status_file "\n";
  close $status_file;
}

sub add_class ($$) {
  my $tag = shift;
  my $new_class = shift; # should not contain bare & and bare "

  if ($tag =~ /^<li\b/) {
    ## NOTE: This |p| wrapper is necessary, otherwise, if |li| element
    ## is set to |display: table|, then no list marker is shown.
    $tag .= qq[<p class="$new_class ja-translation-inserted">];
  } elsif ($tag =~ /\bclass="/) {
    $tag =~ s/\bclass="([^"]*)"/class="$1 $new_class"/;
  } elsif ($tag =~ /\bclass=/) {
    $tag =~ s/\bclass=([^\s>]+)/class="$1 $new_class"/g;
  } else {
    $tag =~ s/>/ class="$new_class">/;
  }
  
  return $tag;
} # add_class

sub escape_id ($$) {
  my $content = shift;
  my $id_prefix = shift; # should not contain bare & and bare "
  
  $content =~ s{<([a-zA-Z0-9-][^<>]+)>}{
    my $tag_content = $1;

    if ($tag_content =~ /\bid="/) {
      $tag_content =~ s/\bid="([^"]*)"/id="$id_prefix$1"/;
    } elsif ($tag_content =~ /\bid=/) {
      $tag_content =~ s/\bid=(\S+)/id="$id_prefix$1"/;
    }

#    if ($tag_content =~ /\bhref=#/) {
#      $tag_content =~ s/\bhref=#(\S+)/href=#$id_prefix$1/;
#    }

    '<' . $tag_content . '>';
  }ge;

  return $content;
} # escape_id