use utf8;

use Scalar::Util ();

package game::goclock;

# Lo and Behold! I admit it! The rounding stuff etc.. in goclock
# is completely borked.

use Time::HiRes ();

use KGS::Constants;

use Glib::Object::Subclass
   Gtk2::Label;

sub INIT_INSTANCE {
   my $self = shift;

   $self->signal_connect (destroy => sub { $_[0]->stop });

   $self->{set}    = sub { };
   $self->{format} = sub { "???" };
}

sub configure {
   my ($self, $timesys, $main, $interval, $count) = @_;

   if ($timesys == TIMESYS_ABSOLUTE) {
      $self->{set}    = sub { $self->{time} = $_[0] };
      $self->{format} = sub { util::format_time $_[0] };

   } elsif ($timesys == TIMESYS_BYO_YOMI) {
      my $low = $interval * $count;

      $self->{set}    = sub { $self->{time} = $_[0] };

      $self->{format} = sub {
         if ($_[0] > $low) {
            util::format_time $_[0] - $low;
         } else {
            sprintf "%s (%d)",
                    util::format_time int (($_[0] - 1) % $interval + 1),
                    ($_[0] - 1) / $interval;
         }
      };

   } elsif ($timesys == TIMESYS_CANADIAN) {
      $self->{set}    = sub { $self->{time} = $_[0]; $self->{moves} = $_[1] };

      $self->{format} = sub {
         if (!$self->{moves}) {
            util::format_time $_[0] - $low;
         } else {
            my $time = int (($_[0] - 1) % $interval + 1);

            sprintf "%s/%d =%d",
                    util::format_time $time,
                    $self->{moves},
                    $self->{moves} > 1
                       ? $time / $self->{moves}
                       : $interval;
         }
      };

   } else {
      # none, or unknown
      $self->{set}    = sub { };
      $self->{format} = sub { "---" }
   }
}

sub refresh {
   my ($self, $timestamp) = @_;
   my $timer = $self->{time} + $self->{start} - $timestamp;
 
   # we round the timer value slightly... the protocol isn't exact anyways,
   # and this gives smoother timers ;)
   my @format = $self->{format}->(int ($timer + 0.4));
   $self->set_text ($self->{format}->(int ($timer + 0.4)));

   $timer - int $timer;
}

sub set_time {
   my ($self, $time) = @_;

   # we ignore requests to re-set the time of a running clock.
   # this is the easiest way to ensure that commentary etc.
   # doesn't re-set the clock. yes, this is frickle design,
   # but I think the protocol is to blame here, which gives
   # very little time information. (cgoban2 also has had quite
   # a lot of small time update problems...)
   unless ($self->{timeout}) {
      $self->{set}->($time->[0], $time->[1]);
      $self->refresh ($self->{start});
   }
}

sub start {
   my ($self, $when) = @_;

   $self->stop;

   $self->{start} = $when;

   my $timeout; $timeout = sub {
      my $next = $self->refresh (Time::HiRes::time) * 1000;
      $next += 1000 if $next < 0;
      $self->{timeout} = add Glib::Timeout $next, $timeout;
      0;
   };

   $timeout->();
}

sub stop {
   my ($self) = @_;

   remove Glib::Source delete $self->{timeout} if $self->{timeout};
}

package game::userpanel;

use Glib::Object::Subclass
   Gtk2::HBox,
   properties => [
      Glib::ParamSpec->IV ("colour", "colour", "User Colour", 0, 1, 0, [qw(construct-only writable)]),
   ];

sub INIT_INSTANCE {
   my ($self) = @_;

   $self->add (my $vbox = new Gtk2::VBox);

   $vbox->add ($self->{name} = new Gtk2::Label $self->{name});
   $vbox->add ($self->{info} = new Gtk2::Label "");
   $vbox->add ($self->{clock} = new game::goclock); Scalar::Util::weaken $self->{clock};

   $vbox->add ($self->{imagebox} = new Gtk2::VBox);

   $self;
}

sub configure {
   my ($self, $app, $user, $rules) = @_;

   if ($self->{name}->get_text ne $user->as_string) {
      $self->{name}->set_text ($user->as_string);

      $self->{imagebox}->remove ($_) for $self->{imagebox}->get_children;
      $self->{imagebox}->add (gtk::image_from_data undef);
      $self->{imagebox}->show_all;

      if ($user->has_pic) {
         # the big picture...
         $app->userpic ($user->{name}, sub {
            return unless $self->{imagebox};

            if ($_[0]) {
               $self->{imagebox}->remove ($_) for $self->{imagebox}->get_children;
               $self->{imagebox}->add (gtk::image_from_data $_[0]);
               $self->{imagebox}->show_all;
            }
         });
      }
   }
   
   $self->{clock}->configure (@{$rules}{qw(timesys time interval count)});
}

sub set_state {
   my ($self, $captures, $timer, $when) = @_;

   $self->{clock}->stop unless $when;
   $self->{clock}->set_time ($timer);
   $self->{clock}->start ($when) if $when;

   $self->{info}->set_text ("$captures pris.");
}

package game;

use Scalar::Util qw(weaken);

use KGS::Constants;
use KGS::Game::Board;

use Gtk2::GoBoard;
use Gtk2::GoBoard::Constants;

use Glib::Object::Subclass
   Gtk2::Window;

use base KGS::Listener::Game;
use base KGS::Game;

use POSIX qw(ceil);

sub new {
   my ($self, %arg) = @_;
   $self = $self->Glib::Object::new;
   $self->{$_} = delete $arg{$_} for keys %arg;

   gtk::state $self, "game::window", undef, window_size => [600, 500];

   $self->signal_connect (destroy => sub {
      $self->unlisten;
      delete $self->{app}{game}{$self->{channel}};
      %{$_[0]} = ();
   });#d#

   $self->add (my $hpane = new Gtk2::HPaned);
   gtk::state $hpane, "game::hpane", undef, position => 500;

   # LEFT PANE

   $hpane->pack1 (($self->{left} = new Gtk2::VBox), 1, 0);
   
   $self->{boardbox} = new Gtk2::VBox;

   $hpane->pack1((my $vbox = new Gtk2::VBox), 1, 1);

   # board box (aspect/canvas)
   
   #$self->{boardbox}->pack_start((my $frame = new Gtk2::Frame), 0, 1, 0);

   # RIGHT PANE

   $hpane->pack2 ((my $vbox = new Gtk2::VBox), 1, 1);
   $hpane->set (position_set => 1);

   $vbox->pack_start ((my $frame = new Gtk2::Frame), 0, 1, 0);

   {
      $frame->add (my $vbox = new Gtk2::VBox);
      $vbox->add ($self->{title} = new Gtk2::Label $title);

      $vbox->add (my $hbox = new Gtk2::HBox);

      $hbox->pack_start (($self->{board_label} = new Gtk2::Label), 0, 1, 0);

      $self->{moveadj} = new Gtk2::Adjustment 1, 1, 1, 1, 5, 0;

      $hbox->pack_start ((my $scale = new Gtk2::HScale $self->{moveadj}), 1, 1, 0);
      $scale->set_draw_value (0);
      $scale->set_digits (0);

      $self->{moveadj}->signal_connect (value_changed => sub { $self->update_board });
   }

   $vbox->pack_start ((my $hbox = new Gtk2::HBox 1), 0, 1, 0);

   $hbox->add ($self->{userpanel}[$_] = new game::userpanel colour => $_)
      for COLOUR_WHITE, COLOUR_BLACK;
   
   $vbox->pack_start (($self->{chat} = new superchat), 1, 1, 0);

   $self->set_channel ($self->{channel});

   $self->show_all;

   $self;
}

sub set_channel {
   my ($self, $channel) = @_;

   $self->{channel} = $channel;

   if ($self->{channel} > 0) {
      $self->listen ($self->{conn});

      $self->{rules_inlay} = $self->{chat}->new_switchable_inlay ("Game Setup:", sub { $self->draw_setup (@_) }, 1);
      $self->{users_inlay} = $self->{chat}->new_switchable_inlay ("Users:", sub { $self->draw_users (@_) }, 1);

      $self->signal_connect (delete_event => sub { $self->part; 1 });
      $self->{chat}->signal_connect (command => sub {
         my ($chat, $cmd, $arg) = @_;
         if ($cmd eq "rsave") {
            Storable::nstore { tree => $self->{tree}, curnode => $self->{curnode}, move => $self->{move} }, $arg;#d#
         } else {
            $self->{app}->do_command ($chat, $cmd, $arg, userlist => $self->{userlist}, game => $self);
         }
      });
   }
}

sub event_update_users {
   my ($self, $add, $update, $remove) = @_;

#   $self->{userlist}->update ($add, $update, $remove);

   $self->{challenge}{$_->{name}} && (delete $self->{challenge}{$_->{name}})->{inlay}->destroy
      for @$remove;

   $self->{users_inlay}->refresh;

   my %important;
   $important{$self->{user1}{name}}++;
   $important{$self->{user2}{name}}++;
   $important{$self->{user3}{name}}++;

   if (my @users = grep $important{$_->{name}}, @$add) {
      $self->{chat}->append_text ("\n<header>Joins:</header>");
      $self->{chat}->append_text (" <user>" . $_->as_string . "</user>") for @users;
   }
   if (my @users = grep $important{$_->{name}}, @$remove) {
      $self->{chat}->append_text ("\n<header>Parts:</header>");
      $self->{chat}->append_text (" <user>" . $_->as_string . "</user>") for @users;
   }
}

sub join {
   my ($self) = @_;
   return if $self->{joined};

   $self->SUPER::join;
}

sub update_cursor {
   my ($self) = @_;

   my $move = int $self->{moveadj}->get_value;
   my $cb;

   my $running = $move == @{$self->{path}}
                 && $self->is_active;

   warn "plaiyng $self->{playing} running $running teach $self->{teacher}\n";
   warn !($self->{playing} && $running);
   warn $self->{teacher} ne $self->{app}{conn};
   if (!($self->{playing} && $running) && $self->{teacher} ne $self->{app}{conn}) {
      warn "A\n";
      $self->{board}->set (cursor_mask => 0, cursor_value => 0);
   } elsif ($self->{user1}{name} eq $self->{conn}{name}) {
      warn "B\n";
      $self->{board}->set (cursor_mask => MARK_B | MARK_W, cursor_value => MARK_B | MARK_GRAYED);
      $cb = sub {
         $self->send (upd_tree =>
            channel => $self->{channel},
            tree    => $self->gen_move_tree (COLOUR_BLACK, $_[0], $_[1]),
         );
      };
   } elsif ($self->{user2}{name} eq $self->{conn}{name}) {
      warn "C\n";
      $self->{board}->set (cursor_mask => MARK_B | MARK_W, cursor_value => MARK_W | MARK_GRAYED);
      $cb = sub {
         $self->send (upd_tree =>
            channel => $self->{channel},
            tree    => $self->gen_move_tree (COLOUR_WHITE, $_[0], $_[1]),
         );
      };
   }

   $self->{board_click} = $cb;
}

sub update_board {
   my ($self) = @_;
   return unless $self->{path};

   my $move = int $self->{moveadj}->get_value;

   my $running = $move == @{$self->{path}}
                 && !$self->{teacher}
                 && $self->is_active;

   $self->{board_label}->set_text ("Move " . ($move - 1));

   $self->{cur_board} = new KGS::Game::Board $self->{size};
   $self->{cur_board}->interpret_path ([@{$self->{path}}[0 .. $move - 1]]);

   for my $colour (COLOUR_WHITE, COLOUR_BLACK) {
      $self->{userpanel}[$colour]->set_state (
         $self->{cur_board}{captures}[$colour],
         $self->{cur_board}{timer}[$colour],
         ($running && $self->{lastmove_colour} == !$colour)
            ? $self->{lastmove_time} : 0
      );
   }

   $self->{board}->set_board ($self->{cur_board});

   $self->update_cursor;
}

sub event_update_tree {
   my ($self) = @_;

   $self->{path} = $self->get_path;

   if ($self->{moveadj}) {
      my $upper = $self->{moveadj}->upper;
      my $pos = $self->{moveadj}->get_value;
      my $move = scalar @{$self->{path}};

      $self->{moveadj}->upper ($move);
      
      $self->{moveadj}->changed;
      if ($pos == $upper) {
         $self->{moveadj}->value ($move);
         $self->{moveadj}->value_changed;
      }
   }
}

sub event_update_comments {
   my ($self, $node, $comment, $newnode) = @_;
   $self->SUPER::event_update_comments($node, $comment, $newnode);

   my $text;

   $text .= "\n<header>Move <move>$node->{move}</move>, Node <node>$node->{id}</node></header>"
      if $newnode;

   for (split /\n/, $comment) {
      $text .= "\n";
      if (s/^([0-9a-zA-Z]+ \[[0-9dkp\?\-]+\])://) {
         $text .= "<user>" . (util::toxml $1) . "</user>:";
      }
      
      # coords only for 19x19 so far
      $_ = util::toxml $_;
      s{
         (
            \b
            (?:[bw])?
            [, ]{0,2}
            [a-hj-t] # valid for upto 19x19
            \s?
            [1-9]?[0-9]
            \b
         )
      }{
         "<coord>$1</coord>";
      }sgexi;

      $text .= $_;
   }

   $self->{chat}->append_text ($text);
}

sub event_join {
   my ($self) = @_;

   $self->SUPER::event_join (@_);
   $self->init_tree;
   $self->event_update_game;
}

sub event_part {
   my ($self) = @_;

   $self->SUPER::event_part;
   $self->destroy;
}

sub event_move {
   my ($self, $pass) = @_;
   sound::play 1, $pass ? "pass" : "move";
}

sub event_update_game {
   my ($self) = @_;

   $self->SUPER::event_update_game;

   return unless $self->{joined};

   $self->{playing} = $self->{teacher} eq $self->{conn}{name}
                      || $self->is_playing ($self->{conn}{name});
   
   my $title = defined $self->{channel}
                  ? $self->owner->as_string . " " . $self->opponent_string
                  : "Game Window";
   $self->set_title("KGS Game $title");
   $self->{title}->set_text ($title);

   $self->{user}[COLOUR_BLACK] = $self->{user1};
   $self->{user}[COLOUR_WHITE] = $self->{user2};

   # show board
   if ($self->is_inprogress) {
      if (!$self->{boardbox}->parent) {
         $self->{boardbox}->add ($self->{board} = new Gtk2::GoBoard size => $self->{size});
         $self->{left}->add ($self->{boardbox});
         $self->{board}->signal_connect (button_release => sub {
               warn "XXX @_\n";#d#
            if ($_[1] == 1) {
               $self->{board_click}->($_[2], $_[3]) if $self->{board_click};
            }
         });
      }
      if (my $ch = delete $self->{challenge}) {
         (delete $_->{inlay})->destroy for values %$ch;
      }
      $self->update_cursor;
   }

   $self->{left}->show_all;

   $self->{rules_inlay}->refresh;
   
}

sub draw_setup {
   my ($self, $inlay) = @_;

   return unless $self->{joined};

   my $rules = $self->{rules};

   my $text = "";

   $text .= "\nTeacher: <user>" . (util::toxml $self->{teacher}) . "</user>"
      if $self->{teacher};

   $text .= "\nOwner: <user>" . (util::toxml $self->{user3}->as_string) . "</user>"
      if $self->{user3}->is_valid;

   if ($self->is_inprogress) {
      $text .= "\nPlayers: <user>" . (util::toxml $self->{user2}->as_string) . "</user>"
               . " vs. <user>" . (util::toxml $self->{user1}->as_string) . "</user>";
   }
   $text .= "\nType: " . util::toxml $gametype{$self->type};

   $text .= "\nRuleset: " . $ruleset{$rules->{ruleset}};

   $text .= "\nTime: ";

   if ($rules->{timesys} == TIMESYS_NONE) {
      $text .= "UNLIMITED";
   } elsif ($rules->{timesys} == TIMESYS_ABSOLUTE) {
      $text .= util::format_time $rules->{time};
      $text .= " ABS";
   } elsif ($rules->{timesys} == TIMESYS_BYO_YOMI) {
      $text .= util::format_time $rules->{time};
      $text .= sprintf " + %s (%d) BY", util::format_time $rules->{interval}, $rules->{count};
   } elsif ($rules->{timesys} == TIMESYS_CANADIAN) {
      $text .= util::format_time $rules->{time};
      $text .= sprintf " + %s/%d CAN", util::format_time $rules->{interval}, $rules->{count};
   }
   
   $text .= "\nFlags:";
   $text .= " private"   if $self->is_private;
   $text .= " started"   if $self->is_inprogress;
   $text .= " adjourned" if $self->is_adjourned;
   $text .= " scored"    if $self->is_scored;
   $text .= " saved"     if $self->is_saved;

   if ($self->is_inprogress) {
      $text .= "\nHandicap: " . $self->{handicap};
      $text .= "\nKomi: " . $self->{komi};
      $text .= "\nSize: " . $self->size_string;
   }

   if ($self->is_scored) {
      $text .= "\nResult: " . $self->score_string;
   }

   $inlay->append_text ("<infoblock>$text</infoblock>");

}

sub event_update_rules {
   my ($self, $rules) = @_;

   $self->{rules} = $rules;

   if ($self->{user}) {
      $self->{userpanel}[$_]->configure ($self->{app}, $self->{user}[$_], $rules)
         for COLOUR_BLACK, COLOUR_WHITE;
   }

   sound::play 3, "gamestart";

   $self->{rules_inlay}->refresh;
}

sub inject_resign_game {
   my ($self, $msg) = @_;

   sound::play 3, "resign";

   $self->{chat}->append_text ("\n<infoblock><header>Resign</header>"
                               . "\n<user>"
                               . (util::toxml $self->{user}[$msg->{player}]->as_string)
                               . "</user> resigned.</infoblock>");
}

sub inject_final_result {
   my ($self, $msg) = @_;

   $self->{chat}->append_text ("<infoblock>\n<header>Game Over</header>"
                               . "\nWhite Score " . (util::toxml $msg->{whitescore}->as_string)
                               . "\nBlack Score " . (util::toxml $msg->{blackscore}->as_string)
                               . "</infoblock>"
                              );
}

sub inject_new_game {
   my ($self, $msg) = @_;

   $self->{chat}->append_text ("\n<header>ACK from server ($msg->{cid} == $self->{cid})</header>");
   delete $self->{cid};
}

sub draw_challenge {
   my ($self, $id) = @_;

   my $challenge = $self->{challenge}{$id};

   my $inlay     = $challenge->{inlay};
   my $rules     = $challenge->{rules};

   my $as_black = $challenge->{user1}{name} eq $self->{conn}{name} ? 1 : 0;;
   my $opponent = $as_black ? $challenge->{user2} : $challenge->{user1};

   my ($size, $time, $interval, $count);

   if (!$self->{channel}) {
      $inlay->append_text ("\nNotes: ");
      $inlay->append_entry (\$channel->{notes}, 20, "");
      $inlay->append_text ("\nGlobal Offer: ");
      $inlay->append_optionmenu (\$challenge->{flags},
         0 => "No",
         2 => "Yes",
      );
   } else {
      $inlay->append_text ("\nNotes: " . util::toxml $channel->{notes});
   }

   $inlay->append_text ("\nType: ");
   $inlay->append_optionmenu (
      \$challenge->{type},
      GAMETYPE_DEMONSTRATION                   , "Demonstration",
      GAMETYPE_DEMONSTRATION | GAMETYPE_PRIVATE, "Demonstration (P)",
      GAMETYPE_TEACHING                        , "Teaching",
      GAMETYPE_TEACHING      | GAMETYPE_PRIVATE, "Teaching (P)",
      GAMETYPE_SIMUL                           , "Simul (not yet!)",
      GAMETYPE_FREE                            , "Free",
      GAMETYPE_RATED                           , "Rated",
      sub {
         $size->set_history (2) if $_[0] eq GAMETYPE_RATED;
      },
   );

   if ($self->{channel}) {
      $inlay->append_text ("\nMy Colour: ");
      $inlay->append_optionmenu (
         \$as_black,
         0 => "White",
         1 => "Black",
         sub {
            if ($challenge->{$_[0] ? "user1" : "user2"}{name} ne $self->{conn}{name}) {
               ($challenge->{user1}, $challenge->{user2}) = ($challenge->{user2}, $challenge->{user1});
            }
         }
      );
   }

   $inlay->append_text ("\nRuleset: ");
   $inlay->append_optionmenu (
      \$challenge->{rules}{ruleset},
      RULESET_JAPANESE   , "Japanese",
      RULESET_CHINESE    , "Chinese",
      RULESET_AGA        , "AGA",
      RULESET_NEW_ZEALAND, "New Zealand",
   );

   $inlay->append_text ("\nSize: ");
   $size = $inlay->append_optionmenu (
      \$challenge->{rules}{size}, 9 => 9, 13 => 13, 19 => 19, map +($_, $_), 2..38
   );

   if ($self->{channel}) {
      $inlay->append_text ("\nHandicap: ");
      $inlay->append_optionmenu (\$challenge->{rules}{handicap}, map +($_, $_), 0..9);

      $inlay->append_text ("\nKomi: ");
      $inlay->append_entry (\$challenge->{rules}{komi}, 5);
   }

   $inlay->append_text ("\nTimesys: ");
   $inlay->append_optionmenu (
      \$challenge->{rules}{timesys},
      &TIMESYS_NONE     => "None",
      &TIMESYS_ABSOLUTE => "Absolute",
      &TIMESYS_BYO_YOMI => "Byo Yomi",
      &TIMESYS_CANADIAN => "Canadian",
      sub {
         my ($new) = @_;

         if ($new eq TIMESYS_NONE) {
            $time->hide;
            $interval->hide;
            $count->hide;
         } else {
            $time->show;
            $time->set_text ($self->{app}{defaults}{time});
            if ($new eq TIMESYS_ABSOLUTE) {
               $interval->hide;
               $count->hide;
            } else {
               $interval->show;
               $count->show;
               if ($new eq TIMESYS_BYO_YOMI) {
                  $interval->set_text ($self->{app}{defaults}{byo_time});
                  $count->set_text ($self->{app}{defaults}{byo_period});
               } elsif ($new eq TIMESYS_CANADIAN) {
                  $interval->set_text ($self->{app}{defaults}{can_time});
                  $count->set_text ($self->{app}{defaults}{can_period});
               }
            }
         }
      }
   );

   $inlay->append_text ("\nMain Time: ");
   $time = $inlay->append_entry (\$challenge->{rules}{time}, 5);
   $inlay->append_text ("\nInterval: ");
   $interval = $inlay->append_entry (\$challenge->{rules}{interval}, 3);
   $inlay->append_text ("\nPeriods/Stones: ");
   $count = $inlay->append_entry (\$challenge->{rules}{count}, 2);

   $inlay->append_text ("\n");

   if (!$self->{channel}) {
      $inlay->append_button ("Create Challenge", sub {
         $inlay->clear;
         $self->{cid} = $self->{conn}->alloc_clientid;
         $self->send (new_game => 
            channel => delete $self->{roomid},
            cid     => $self->{cid},
            type    => $challenge->{type},
            flags   => $challenge->{flags},
            rules   => $challenge->{rules},
            notes   => $challenge->{notes},
         );
      });
   } else {
      $inlay->append_button ("OK", sub {
         $inlay->clear;
         $self->send (challenge => 
            channel   => $self->{channel},
            challenge => $challenge,
         );
      });
      if (exists $self->{challenge}{""}) {
         $inlay->append_button ("Reject", sub {
            $inlay->clear;
            $self->send (reject_challenge => 
               channel => $self->{channel},
               name    => $opponent->{name},
            );
         });
      }
   }
}

sub draw_users {
   my ($self, $inlay) = @_;

   for (sort keys %{$self->{users}}) {
      $inlay->append_text ("  <user>" . $self->{users}{$_}->as_string . "</user>");
   }
}

sub event_challenge {
   my ($self, $challenge) = @_;

   my $as_black = $challenge->{user1}{name} eq $self->{conn}{name};
   my $opponent = $as_black ? $challenge->{user2} : $challenge->{user1};

   my $id = $opponent->{name};

   $self->{challenge}{$id} = $challenge;
   $self->{chat}->new_switchable_inlay (
      exists $self->{challenge}{""} ? "Challenge from $opponent->{name}" : "Challenge to $opponent->{name}",
      sub {
         $self->{challenge}{$id}{inlay} = $_[0];
         $self->draw_challenge ($id);
      },
      !exists $self->{challenge}{""} # only open when not offerer
   );
}

1;