package GCE::Util;
=head1 NAME

   GCE::Util - some utility functions

=over 4

=cut

use base 'Exporter';

use Deliantra;

use Carp ();
use Storable;
use List::Util qw(min max);

use Deliantra;
use Deliantra::MapWidget;
use File::Spec::Functions;
use File::Basename;
use File::Path;
#use HTTP::Request::Common;
use Cwd 'abs_path';
use strict;

our @EXPORT = qw(insert_arch_stack_layer replace_arch_stack_layer new_arch_pb
                 fill_pb_from_arch arch_is_floor stack_find_floor stack_find_wall
                 stack_find arch_is_wall arch_is_monster add_table_widget quick_msg
                 def arch_is_exit map2abs exit_paths pseudohtml2txt arch_is_connector
                 gtk2_get_color devirtualize);

my %allocated_colors;

sub devirtualize {
   my ($map, $x, $y, $arch, $stack) = @_;
   if ($arch->{_virtual}) {
      my @head = $map->get_head ($arch);
      if (@head) {
         return ($head[0], $head[1], $head[3]->[$head[2]], $head[3], $head[2])
      }
   }

   my ($z) = grep $stack->[$_] == $arch, 0..$#$stack;

   return ($x, $y, $arch, $stack, $z)
}

sub gtk2_get_color {
   my ($widget, $name) = @_;
   my $colormap = $widget->{window}->get_colormap;
   my $ret;

   if ($ret = $allocated_colors{$name}) {
      return $ret;
   }

   my $color = Gtk2::Gdk::Color->parse($name);
   $colormap->alloc_color($color,1,1);

   $allocated_colors{$name} = $color;

   return $color;
}
sub pseudohtml2txt {
   my ($html) = @_;

   $html =~ s/<br\s*?\/?>/\n/gsi;
   $html =~ s/<b>(.*?)<\/b>/_\1_/gsi;
   $html =~ s/<li>/\n* /gi;
   $html =~ s/<\/?\s*li>//gi;
   $html =~ s/<\/?\s*ul>//gi;
   $html =~ s/&gt;/>/g;
   $html =~ s/&lt;/</g;
   $html
}

sub exit_paths {
   my ($mappath, $map1path, $map2path) = @_;
   $mappath  = abs_path $mappath;
   $map1path = abs_path $map1path;
   $map2path = abs_path $map2path;

   if (    (substr $map1path, 0, length $mappath) eq $mappath
       and (substr $map2path, 0, length $mappath) eq $mappath) {
      substr $map1path, 0, length $mappath, '';
      substr $map2path, 0, length $mappath, '';

      my ($v1, $d1, $f1) = File::Spec->splitpath ($map1path);
      my ($v2, $d2, $f2) = File::Spec->splitpath ($map2path);

      my @di1 = File::Spec->splitdir ($d1);
      my @di2 = File::Spec->splitdir ($d2);

      if ((defined $di1[1]) and (defined $di2[1]) and $di1[1] eq $di2[1]) {
         my $m1 = File::Spec->abs2rel ($map1path, File::Spec->catdir (@di2));
         my $m2 = File::Spec->abs2rel ($map2path, File::Spec->catdir (@di1));
         return ($m1, $m2);
      } else {
         return ($map1path, $map2path);
      }
   } else {
      return ('', '');
   }
}

sub map2abs {
   my ($dest, $mape) = @_;

   #$dest = abs_path $dest;
   my $dir;
   if (File::Spec->file_name_is_absolute($dest)) {
      $dir = catdir ($::MAPDIR, $dest);
   } else {
      my ($v, $p, $f) = File::Spec->splitpath ($mape->{path});
      $dir = File::Spec->rel2abs ($dest, File::Spec->catpath ($v, $p));
   }
   return $dir;
}

sub def($$) {
   return defined ($_[0]) ? $_[0] : $_[1];
}

sub quick_msg {
   my $wid = shift;
   my $msg;
   my $win = $::MAINWIN;
   if (ref $wid) {
      $win = $wid;
      $msg = shift;
   } else {
      $msg = $wid;
   }
   my $dia = Gtk2::Dialog->new ('Message', $win, 'destroy-with-parent', 'gtk-ok' => 'none');

   my $lbl = Gtk2::Label->new ($msg);
   $dia->vbox->add ($lbl);
   $dia->signal_connect (response => sub { $_[0]->destroy });

   unless (defined $_[0]) {
      Glib::Timeout->add (1000, sub { $dia->destroy; 0 });
   }

   $dia->show_all;
}

sub new_arch_pb {
   # this is awful, is this really the best way?
   my $pb = new Gtk2::Gdk::Pixbuf 'rgb', 1, 8, TILESIZE, TILESIZE;
   fill_pb_from_arch ($pb, {});
   return $pb;
}

sub fill_pb_from_arch {
   my ($pb, $a) = @_;

   my $o = $Deliantra::ARCH{$a->{_name}} || {};
   my $face = $Deliantra::FACE{$a->{face} || $o->{face} || "blank.111"};
   unless ($face) {
      $face = $Deliantra::FACE{"blank.x11"}
         or warn "no gfx found for arch '$a->{_name}'\n";
   }

   $face or return;

   $pb->fill (0x00000000);
   $TILE->composite ($pb,
      0, 0,
      TILESIZE, TILESIZE,
      - ($face->{idx} % 64) * TILESIZE, - TILESIZE * int $face->{idx} / 64,
      1, 1, 'nearest', 255
   );
}

sub classify_arch_layer {
   my ($arch) = @_;

   if ($arch->{invisible}) { # just a heuristic for 'special' tiles (er. pedestals)

      return 'below';

   } elsif ($arch->{monster}) {

      return 'top';

   } else { # $arch->{is_floor} and all other arches are 'between' monsters and floor

      return 'between';
   }
}

sub arch_is_exit {
   my ($a) = @_;
   my $type = $Deliantra::ARCH{$a->{_name}}->{type};
   return $type eq '66' || $type eq '41';
}

sub arch_is_floor {
   my ($a) = @_;
   my $ar = Deliantra::arch_attr $a;
   return (
     (substr $ar->{name}, 0, 5) eq 'Floor'
     or (substr $ar->{name}, 0, 10) eq 'Shop Floor'
   )
}

sub arch_is_connector {
   my ($a) = @_;
   my $ar = Deliantra::arch_attr $a;
   my $has_connect_field = 0;

   TOP: for (@{$ar->{section}}) {
      my $name = shift @$_;
      my @r = @$_;
      if ($name eq 'general') {
         for (@r) {
            my ($k, $s) = ($_->[0], $_->[1]);
            if ($k eq 'connected' && $s->{name} eq 'connection') {
               $has_connect_field = 1;
               last TOP;
            }
         }
         last TOP;
      }
   }

   return $has_connect_field;
}

sub arch_is_wall {
   my ($a) = @_;
   my $ar = Deliantra::arch_attr $a;
   return $ar->{name} eq 'Wall';
#return $Deliantra::ARCH{$a->{_name}}->{no_pass};
}

sub arch_is_monster {
   my ($a) = @_;
   my $arch = $Deliantra::ARCH{$a->{_name}};
   return $arch->{alive} and ($arch->{monster} or $arch->{generator});
}

sub stack_find {
   my ($stack, $dir, $pred) = @_;


   if ($dir eq 'from_top') {
      my $i = scalar (@$stack) - 1;
      if ($i < 0) { $i = 0 }

      for (reverse @$stack) {
         $pred->($_)
            and return $i;

         $i--;
      }

   } else {
      my $i = 0;

      for (@$stack) {
         $pred->($_)
            and return $i;

         $i++;
      }
   }

   return 0;

}

sub stack_find_floor {
   my ($stack, $dir) = @_;
   return stack_find ($stack, $dir, \&arch_is_floor);
}

sub stack_find_wall {
   my ($stack, $dir) = @_;
   return stack_find ($stack, $dir, \&arch_is_wall);
}

sub insert_arch_stack_layer {
   my ($stack, $arch) = @_;

   unless (@$stack) {
      return [ $arch ];
   }

   my @outstack;

   my $l = classify_arch_layer ($Deliantra::ARCH{$arch->{_name}});

   if ($l eq 'between') {

      # loop until we reached the first 'between' arch above 'below' arches and the floor
      while (my $a = shift @$stack) {

         unless ($Deliantra::ARCH{$a->{_name}}->{is_floor}
                 or classify_arch_layer ($Deliantra::ARCH{$a->{_name}}) eq 'below') {

            unshift @$stack, $a;
            last;
         }

         push @outstack, $a;
      }

      # ignore duplicates
      # FIXME: Broken if non-floor are drawn (too tired to fix)
      return [ @outstack, @$stack ]
         if @outstack and $outstack[-1]->{_name} eq $arch->{_name};

      push @outstack, ($arch, @$stack);

   } elsif ($l eq 'top') {

      # ignore duplicates
      return [ @$stack ]
         if $stack->[-1]->{_name} eq $arch->{_name};

      @outstack = (@$stack, $arch);

   } else {

      # ignore duplicates
      return [ @$stack ]
         if $stack->[0]->{_name} eq $arch->{_name};

      @outstack = ($arch, @$stack);
   }

   return \@outstack;
}

sub add_table_widget {
   my ($table, $row, $data, $type, $cb) = @_;
   my $edwid;

   if ($type eq 'string') {
      $table->attach_defaults (my $lbl = Gtk2::Label->new ($data->[0]), 0, 1, $row, $row + 1);
      $edwid = Gtk2::Entry->new;
         $edwid->set_text ($data->[1]);
         $edwid->signal_connect (changed => sub {
            $data->[1] = $_[0]->get_text;
            $cb->($data->[1]) if $cb;
         });
      $table->attach_defaults ($edwid, 1, 2, $row, $row + 1);

   } elsif ($type eq 'button') {
      $table->attach_defaults (my $b = Gtk2::Button->new_with_label ($data), 0, 2, $row, $row + 1);
      $b->signal_connect (clicked => ($cb || sub {}));

   } elsif ($type eq 'label') {
      $table->attach_defaults (my $lbl = Gtk2::Label->new ($data->[0]), 0, 1, $row, $row + 1);
      $edwid = Gtk2::Label->new ($data->[1]);
      $table->attach_defaults ($edwid, 1, 2, $row, $row + 1);

   } else {
      $edwid = Gtk2::Label->new ("FOO");
   }
}

sub replace_arch_stack_layer {
   my ($stack, $arch) = @_;

   my @outstack;

   my $l = classify_arch_layer ($Deliantra::ARCH{$arch->{_name}});

   if ($l eq 'between') {

      while (shift @$stack) {
         last unless $Deliantra::ARCH{$_->{_name}}->{is_floor};
         push @outstack, $_;
      }

      if (@outstack and $Deliantra::ARCH{$outstack[-1]->{_name}}->{is_floor}) {
         pop @outstack;
      }

      push @outstack, ($arch, @$stack);

   } elsif ($l eq 'top') {

      @outstack = (@$stack, $arch);

   } else {

      @outstack = ($arch, @$stack);
   }

   return \@outstack;
}

sub upload {
   my ($login, $password, $srcrep, $path, $rev, $mapdata) = @_;
   #require LWP::UserAgent;
   #my $ua = LWP::UserAgent->new (
   #   agent      => "deliantra editor",
   #   keep_alive => 1,
   #   env_proxy  => 1,
   #   timeout    => 30,
   #);
   #require HTTP::Request::Common;

   #my $res = $ua->post (
   #   $ENV{CFPLUS_UPLOAD},
   #   Content_Type => 'multipart/form-data',
   #   Content      => [
   #      path        => $path,
   #      mapdir      => $srcrep,
   #      map         => $mapdata,
   #      revision    => $rev,
   #      cf_login    => $login, #ENV{CFPLUS_LOGIN},
   #      cf_password => $password, #ENV{CFPLUS_PASSWORD},
   #      comment     => "",
   #   ]
   #);

   #if ($res->is_error) {
   #   # fatal condition
   #   warn $res->status_line;
   #} else {
   #   # script replies are marked as {{..}}
   #   my @msgs = $res->decoded_content =~ m/\{\{(.*?)\}\}/g;
   #   warn map "$_\n", @msgs;
   #}
}

=head1 AUTHOR

 Marc Lehmann <schmorp@schmorp.de>
 http://home.schmorp.de/

 Robin Redeker <elmex@ta-sa.org>
 http://www.ta-sa.org/

=cut
1;