#!/usr/bin/perl
# This is the index for <dir>.
use strict;
use warnings FATAL => qw( all );

use CGI::Carp qw(fatalsToBrowser);
use CGI::Minimal;
use HTML::Entities qw(encode_entities);

use lib '../files/lib';
use Base::Page     qw(page story);
use HTML::Elements qw(list anchor);
use Util::Convert  qw(searchify);
use Util::Data     qw(file_directory file_list);
use Util::Menu     qw(file_menu);
use Util::Sort     qw(article_sort);

my $cgi        = CGI::Minimal->new;
my $page       = $cgi->param('page') ? encode_entities($cgi->param('page'),'/<>"') : undef;
my $pages_dir  = file_directory(<dir>, 'text');
my @pages_list = file_list($pages_dir);
my @pages      = sort { article_sort($a, $b) }
                 map  { $_ =~ s/\.txt//; $_ =~ s/_/ /g; $_ }
                 grep { -f "$pages_dir/$_" && /^\p{uppercase}/ }
                 @pages_list;
my $heading    = q(<the heading for the index>);
my $page_file  = "$pages_dir/index.txt";
if ( $page && grep { $_ eq $page } @pages ) {
  $heading     = $page;
  $page_file   = "$pages_dir/$page.txt";
  $page_file   =~ s/ /_/g;
}
open(my $page_fh, '<', $page_file) || die "Can't open $page_file. $!";

my $magic;
$magic->{'pages'} = sub {
  my $file_menu = file_menu('page', \@pages, $page);
  list(4, 'u', $file_menu);
};

page(
  'heading' => $heading,
  'selected' => $page,
  'code' => sub {
    story($page_fh, { 'doc magic' => $magic, 'line magic' => $magic });
  }
);

##</code><code>##

sub base_menu {
  my %opt = @_;
  my $directory = $opt{'directory'};
  my $root_path = $opt{'root path'};
  my $curr_cwd = cwd;

  my @contents = file_list($directory);
  @contents = grep {/^\p{uppercase}/} @contents if (!$opt{'full'} || $opt{'full'} !~ /^[yt1]/); # Thank you [tye]!

  # Thank you [davido]!
  my $sub = $directory =~ /(Other_poets|Player_characters|Spellbooks)$/ ? \&name_sort : \&article_sort;
  @contents = sort { $sub->($a, $b, { 'misc' => $opt{'misc'} }) } @contents;

  my (@files, @directories);

  if (!$opt{'full'} || $opt{'full'} !~ /^[yt1]/) {
    my $text_dir = $directory;
       $text_dir =~ s|(\Q$root_path\E)|$1/files/text|;
    my @text_files = sort { $sub->($a, $b, { 'misc' => $opt{'misc'} }) } file_list($text_dir, { 'uppercase' => 1 }) if -e $text_dir;
    for my $text_file (@text_files) {
      my $text   = textify($text_file);
      my $select = searchify($text_file);
      my $link   = File::Spec->abs2rel("$directory/index.pl?page=$select");
      my $class  = $opt{'selected'} && $opt{'selected'} eq $text ? 'active' : 'inactive';
      my $anchor = anchor($text, { 'href' => $link, 'title' => $text});
      push @files, [$anchor, { 'class' => $class }] if -f "$text_dir/$text_file";
    }
  }

  for my $content (@contents) {
    my $long_content = "$directory/$content";
    my $link = File::Spec->abs2rel($long_content);
    my $text = $content !~ /^\./ ? textify($content) : $content;

    if (-f $long_content) {
      my $active = realpath($0) eq $long_content ? 'active' : 'inactive';
      my $color  = $opt{'color'} == 1 ? link_color($content,1) : undef;
      my $inlist = $active eq 'active' && $opt{'file menu'} ? ['u', $opt{'file menu'}, { 'class' => 'sub_menu' }] : undef;
        $active .= $active eq 'active' && $opt{'file menu'} ? ' open' : '';
      if (-M $long_content < 3) {
        $active .= ' updated';
      }
      my $anchor = anchor($text, { 'href' => $link, 'title' => $text, 'style' => $color });
      push @files, [$anchor, { 'class' => $active, 'inlist' => $inlist }];
    }

    if (-d $long_content) {
      my $active = $curr_cwd =~ /$long_content/ ? 'open active' : 'closed inactive';
      my $index = "$long_content/index.pl";
      my $file_list;
      my $anchor;

      if (-e $index && (!$opt{'full'} || $opt{'full'} !~ /^[yt1]/)) {
        $link .= "/index.pl";
        my $color = $opt{'color'} == 1 ? link_color($link,1) : undef;
        $anchor = anchor($text, { 'href' => $link, 'title' => $text, 'style' => $color });
        $file_list = "$curr_cwd/$0" =~ /$index/ && $active =~ / active$/ && $opt{'file menu'} ? $opt{'file menu'} : undef;
      }

      my $next_list = base_menu(
        'directory' => $long_content,
        'color' => $opt{'color'},
        'full'  => $opt{'full'},
        'misc'  => $opt{'misc'},
        'selected'  => $opt{'selected'},
        'file menu' => $opt{'file menu'},
        'root path' => $opt{'root path'}
      );
      push @$next_list, @$file_list if $file_list;
      my $inlist = $next_list ? ['u', $next_list] : undef;
      $active =~ s/^(?:open|closed) // if !$inlist;
      push @directories, [$anchor ? $anchor : $text, { 'class' => $active, 'inlist' => $inlist}];
    }
  }
  my @file_lines = (@files, @directories);

  return @file_lines > 0 ? \@file_lines : undef;
}