// -*- mode:C++; tab-width:2; c-basic-offset:2; indent-tabs-mode:nil -*-
/* Blackjack - events.cpp
 * Copyright (C) 2003 William Jon McCann <mccann@jhu.edu>
 *
 * This game is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 * USA
 */

#include <config.h>

#ifdef HAVE_ALLOCA_H
#include <alloca.h>
#endif

#include <sys/types.h>
#include <string.h>
#include <stdlib.h>
#include <time.h>
#include <dirent.h>
#include <ctype.h>
#include <iostream>
#include <math.h>
using namespace std;

#include "events.h"
#include "blackjack.h"
#include "draw.h"
#include "dialog.h"
#include "slot.h"
#include "card.h"
#include "menu.h"
#include "chips.h"

#include "hand.h"
#include "game.h"

hslot_type last_hslot = NULL;
gint last_cardid = -1;

hstack_type last_hstack = NULL;
gint last_chipid = -1;

GTimer * click_timer = NULL;
gdouble dbl_click_time;

gboolean
bj_event_key_press (GtkWidget *widget, GdkEventKey *event, void *d)
{
  guint key;

  // ignore clicks during actions
  if (events_pending)
    return TRUE;

  key = event->keyval;

  // Carry out player option.
  switch (key) {
  case KEY_S :
    bj_hand_stand ();
    break;
  case KEY_H :
    bj_hand_hit_with_delay ();
    break;
  case KEY_D : 
    bj_hand_double ();
    break;
  case KEY_P :
    bj_hand_split ();
    break;
  case KEY_R :
    bj_hand_surrender ();
    break;
  case KEY_ENTER :
    bj_hand_new_deal ();
    break;
  default:
    break;
  }

  return true;
}

int
waiting_for_mouse_up (void)
{
  if (!press_data) return 0;
  if (press_data->status == STATUS_IS_DRAG) return 1;
  if (press_data->status == STATUS_SHOW) return 1;
  return 0;
}

/* Button press statuses */

void end_of_game_test ()
{
}

static void
drop_moving_cards (gint x, gint y)
{
  hslot_type hslot;
  gint cardid; 
  gboolean moved = false;
  gint width, height;
  gboolean do_split = false;

  bj_slot_pressed (x + bj_card_get_width() / 2 - press_data->xoffset, 
                   y + bj_card_get_height() / 2 - press_data->yoffset, 
                   &hslot, &cardid);

  if (hslot)
    {
    }
  else
    {
      if (press_data->hslot == bj_hand_get_slot ())
        {
          do_split = true;
        }
    }

  if (!moved)
    {
      hslot = press_data->hslot;
      bj_slot_add_cards (press_data->cards, hslot);
    }

  bj_slot_update_length (hslot);
  press_data->cards = NULL;

  gdk_drawable_get_size (press_data->moving_cards, &width, &height);
  gdk_window_move (press_data->moving_cards, 
                   hslot->x + hslot->width - width, 
                   hslot->y + hslot->height - height);

   bj_draw_refresh_screen ();

  gdk_window_hide (press_data->moving_cards);
  
  if (press_data->moving_pixmap)
    g_object_unref (press_data->moving_pixmap);
  if (press_data->moving_mask)
    g_object_unref (press_data->moving_mask);
  press_data->moving_pixmap = NULL;
  press_data->moving_mask = NULL;

  if (do_split)
    bj_hand_split ();

}

static void
drop_moving_chips (gint x, gint y)
{
  hstack_type hstack;
  gint chipid; 
  gboolean moved = false;

  bj_chip_stack_pressed (x, y, &hstack, &chipid);
  if (hstack)
    {
      if (hstack != chip_stack_press_data->hstack)
        {
          if (bj_chip_stack_is_source (chip_stack_press_data->hstack)
              && ! bj_chip_stack_is_source (hstack))
            {
              // Put chips back on source stack
              bj_chip_stack_add_chips (chip_stack_press_data->chips, 
                                       chip_stack_press_data->hstack);
              bj_chip_stack_update_length (chip_stack_press_data->hstack);

              // Add chips value to wager
              gfloat value = bj_chip_stack_get_chips_value 
                (chip_stack_press_data->chips);
              bj_adjust_wager (value);
              bj_clear_table ();
              moved = true;
            }
          else if (! bj_chip_stack_is_source (chip_stack_press_data->hstack)
              && bj_chip_stack_is_source (hstack))
            {
              // Remove value from wager
              // Make sure that minimum wager is maintained
              gfloat value = bj_chip_stack_get_chips_value 
                (chip_stack_press_data->chips);
              bj_adjust_wager (-1 * value);
              bj_clear_table ();
              moved = true;
            }
        }
    }

  if (! moved)
    {
      bj_chip_stack_add_chips (chip_stack_press_data->chips,
                               chip_stack_press_data->hstack);
      bj_chip_stack_update_length (chip_stack_press_data->hstack);
    }

  chip_stack_press_data->chips = NULL;

  bj_draw_refresh_screen ();

  gdk_window_hide (chip_stack_press_data->moving_chips);
  
  if (chip_stack_press_data->moving_pixmap)
    g_object_unref (chip_stack_press_data->moving_pixmap);
  if (chip_stack_press_data->moving_mask)
    g_object_unref (chip_stack_press_data->moving_mask);
  chip_stack_press_data->moving_pixmap = NULL;
  chip_stack_press_data->moving_mask = NULL;

}

static gint
handle_slot_pressed (GdkEventButton *event, hslot_type hslot, gint cardid)
{
  gboolean double_click;

  /* We can't let Gdk do the double-click detection since the entire playing
   * area is one big widget it can't distinguish between single-clicks on two
   * cards and a double-click on one. */
  double_click = (g_timer_elapsed (click_timer,NULL) < dbl_click_time)
    && (last_cardid == cardid)
    && (last_hslot->id == hslot->id);
  g_timer_start (click_timer);
  bj_slot_pressed ((gint)event->x, (gint)event->y, &last_hslot, &last_cardid);
  
  press_data->xoffset = (gint)event->x;
  press_data->yoffset = (gint)event->y;

  press_data->hslot = hslot;
  press_data->cardid = cardid;

  if (!(press_data->status == STATUS_CLICK && double_click))
    {
      press_data->status = cardid > 0 ? STATUS_MAYBE_DRAG : STATUS_NOT_DRAG;
    }
  if (cardid > 0 && press_data->status == STATUS_NONE)
    {
      hcard_type card = 
        (hcard_type) g_list_nth (hslot->cards, cardid - 1)->data;
      
      if (card->direction == UP)
        {
          guint delta = hslot->exposed - (hslot->length - cardid) - 1;
          int x = hslot->x + delta * hslot->dx;
          int y = hslot->y + delta * hslot->dy;
          
          press_data->status = STATUS_SHOW;
          press_data->moving_pixmap = bj_card_get_picture (card->suit, card->value);
          press_data->moving_mask = bj_card_get_mask ();
          
          if (press_data->moving_pixmap != NULL)
            gdk_window_set_back_pixmap (press_data->moving_cards, 
                                        press_data->moving_pixmap, 0);
          gdk_window_shape_combine_mask (press_data->moving_cards, 
                                         press_data->moving_mask, 0, 0);
          gdk_window_move (press_data->moving_cards, x, y); 
          gdk_window_show (press_data->moving_cards);
        }
    } 
  else if (double_click)
    {
      press_data->status = STATUS_NONE;
      //bj_draw_refresh_screen ();
      //end_of_game_test ();
      return TRUE;
    }
  return TRUE;
}

static gint
handle_chip_stack_pressed (GdkEventButton *event, 
                           hstack_type hstack,
                           gint chipid)
{
  gboolean double_click;

  if (bj_game_is_active () && bj_chip_stack_is_source (hstack))
    {
      bj_hand_double ();
      return TRUE;
    }

  /* We can't let Gdk do the double-click detection since the entire playing
   * area is one big widget it can't distinguish between single-clicks on two
   * cards and a double-click on one. */
  double_click = (g_timer_elapsed (click_timer,NULL) < dbl_click_time)
    && (last_chipid == chipid)
    && (last_hstack == hstack);
  g_timer_start (click_timer);

  bj_chip_stack_pressed ((gint)event->x, (gint)event->y, 
                         &last_hstack, &last_chipid);
  
  chip_stack_press_data->xoffset = (gint)event->x;
  chip_stack_press_data->yoffset = (gint)event->y;

  chip_stack_press_data->hstack = hstack;
  chip_stack_press_data->chipid = chipid;

  if (!(chip_stack_press_data->status == STATUS_CLICK && double_click))
    {
      chip_stack_press_data->status = 
        chipid >= 0 ? STATUS_MAYBE_DRAG : STATUS_NOT_DRAG;
    }
  if (chipid >= 0 && chip_stack_press_data->status == STATUS_NONE)
    {
      guint delta = hstack->exposed - (hstack->length - chipid) - 1;
      int x = hstack->x + delta * hstack->dx;
      int y = hstack->y + delta * hstack->dy;
      
      press_data->status = STATUS_SHOW;
      gfloat chip_value = 
        ((hchip_type)g_list_nth_data (hstack->chips, chipid))->value;

      GdkPixbuf *pixbuf = bj_chip_get_pixbuf (bj_chip_get_id (chip_value));
      GdkPixmap *pixmap;
      GdkBitmap *mask;
      gdk_pixbuf_render_pixmap_and_mask (pixbuf, &pixmap, &mask, 127);
      press_data->moving_pixmap = pixmap;
      press_data->moving_mask = mask;
      
      if (press_data->moving_pixmap != NULL)
        gdk_window_set_back_pixmap (press_data->moving_cards, 
                                    press_data->moving_pixmap, 0);
      gdk_window_shape_combine_mask (press_data->moving_cards, 
                                     press_data->moving_mask, 0, 0);
      gdk_window_move (press_data->moving_cards, x, y); 
      gdk_window_show (press_data->moving_cards);
    } 
  else if (double_click)
    {
      chip_stack_press_data->status = STATUS_NONE;
      gfloat chip_value = 
        ((hchip_type)g_list_last (hstack->chips)->data)->value;
      if (bj_chip_stack_is_source (hstack))
        bj_adjust_wager (chip_value);
      else
        bj_adjust_wager (-1 * chip_value);
      bj_clear_table ();
      bj_draw_refresh_screen ();
      return TRUE;
    }
  return TRUE;
}

gint
bj_event_button_press (GtkWidget *widget, GdkEventButton *event, void *d)
{
  hslot_type hslot;
  gint cardid;

  // ignore clicks during actions
  if (events_pending)
    {
      return TRUE;
    }

  if (event->button != 1)
    return TRUE;

  /* ignore the gdk synthetic click events */
  if (event->type != GDK_BUTTON_PRESS)
    return TRUE;
  
  if (press_data->status == STATUS_IS_DRAG
      || (press_data->status == STATUS_SHOW 
          || press_data->status == STATUS_IS_DRAG))
    return TRUE;

  if (chip_stack_press_data->status == STATUS_IS_DRAG
      || (chip_stack_press_data->status == STATUS_SHOW 
          || chip_stack_press_data->status == STATUS_IS_DRAG))
    return TRUE;

  bj_slot_pressed ((gint)event->x, (gint)event->y, &hslot, &cardid);
  if (!hslot)
    {
      gint chipid;
      hstack_type hstack;
      bj_chip_stack_pressed ((gint)event->x, (gint)event->y, &hstack, &chipid);
      if (hstack)
        {
          handle_chip_stack_pressed (event, hstack, chipid);
        }
      return TRUE;
    }
  else
    return handle_slot_pressed (event, hslot, cardid);

  return TRUE;
}

void
bj_slot_clicked ()
{
  if (! bj_game_is_active ())
    bj_hand_new_deal ();
  else
    {
      if (press_data->hslot == bj_hand_get_slot ())
        bj_hand_hit_with_delay ();
      else
        bj_hand_stand ();
    }
}

gint
bj_event_button_release (GtkWidget *widget, GdkEventButton *event, void *d)
{
  switch (press_data->status)
    {
    case STATUS_IS_DRAG:
      press_data->status = STATUS_NONE;
      drop_moving_cards ((gint)event->x, (gint)event->y);
      break;
    case STATUS_SHOW:
      press_data->status = STATUS_NONE;
      gdk_window_hide (press_data->moving_cards);
      press_data->moving_pixmap = NULL;
      press_data->moving_mask = NULL;
      break;
    
    case STATUS_MAYBE_DRAG:
    case STATUS_NOT_DRAG:
      press_data->status = STATUS_CLICK;
      bj_slot_clicked ();
      break;
      
    case STATUS_CLICK:
    case STATUS_NONE:
      break;
    }

  switch (chip_stack_press_data->status)
    {
    case STATUS_IS_DRAG:
      chip_stack_press_data->status = STATUS_NONE;
      drop_moving_chips ((gint)event->x, (gint)event->y);
      break;
    case STATUS_SHOW:
      chip_stack_press_data->status = STATUS_NONE;
      gdk_window_hide (chip_stack_press_data->moving_chips);
      chip_stack_press_data->moving_pixmap = NULL;
      chip_stack_press_data->moving_mask = NULL;
      break;
    
    case STATUS_MAYBE_DRAG:
    case STATUS_NOT_DRAG:
      chip_stack_press_data->status = STATUS_CLICK;
      //bj_slot_clicked ();
      break;
      
    case STATUS_CLICK:
    case STATUS_NONE:
      break;
    }
  return TRUE;
}

static gint
handle_other_motion_event (GtkWidget *widget, GdkEventMotion *event)
{
  // This is primarily to display help information
  hslot_type hslot = NULL;
  gint cardid;
  bj_slot_pressed ((gint)event->x, (gint)event->y, &hslot, &cardid);
  if (hslot)
    {
      gchar *message;
      if (bj_game_is_active ())
        { 
          if (hslot == bj_hand_get_slot ())
            if (bj_hand_can_be_split ())
              message = g_strdup (_("Click to deal another card; drag card to split pair"));
            else
              message = g_strdup (_("Click to deal another card"));
           else
            message = g_strdup (_("Click to finish adding cards to your hand"));
        }
      else
        message = g_strdup (_("Click to deal a new hand"));
      gnome_appbar_set_status (GNOME_APPBAR (status_bar), message);
      g_free (message);
    }
  else
    {
      hstack_type hstack;
      gint chipid;
      bj_chip_stack_pressed ((gint)event->x, (gint)event->y,
                             &hstack, &chipid);
      if (hstack)
        {
          if (bj_chip_stack_is_source (hstack))
            {
              if (bj_hand_can_be_doubled ())
                gnome_appbar_set_status (GNOME_APPBAR (status_bar), 
                                         _("Click to double your wager"));
              else if (! bj_game_is_active ())
                {
                  gfloat chip_value = 
                    ((hchip_type)g_list_last (hstack->chips)->data)->value;
                  gchar *message = g_strdup_printf
                    (_("Double click to increase your wager by %.2f"), 
                     chip_value);
                  gnome_appbar_set_status (GNOME_APPBAR (status_bar), 
                                           message);
                  g_free (message);
                }
            }
          else
            {
              if (! bj_game_is_active ())
                {
                  gfloat chip_value = 
                    ((hchip_type)g_list_last (hstack->chips)->data)->value;
                  gchar *message = g_strdup_printf
                    (_("Double click to decrease your wager by %.2f"), 
                     chip_value);
                  gnome_appbar_set_status (GNOME_APPBAR (status_bar), 
                                           message);
                  g_free (message);
                }
            }
        }
      else
        {
          // Not over anything we know about
          // black out the status bar
          gnome_appbar_set_status (GNOME_APPBAR (status_bar), "");
        }
    }
  return FALSE;
}

static gint
handle_slot_motion_event (GtkWidget *widget, GdkEventMotion *event)
{
  if (press_data->status == STATUS_IS_DRAG)
    {
      gdk_window_move (press_data->moving_cards,  
                       (gint)event->x - press_data->xoffset,
                       (gint)event->y - press_data->yoffset);
      gdk_window_clear (press_data->moving_cards);
      return TRUE;
    }
  else if (press_data->status == STATUS_MAYBE_DRAG
           && (fabs (press_data->xoffset - event->x) > 2.0 
               || fabs (press_data->yoffset - event->y) > 2.0))
    {
      press_data->status = STATUS_IS_DRAG;
      bj_press_data_generate ();
      bj_draw_take_snapshot();
      return TRUE;
    }
  else
    {
    }
  
  return FALSE;
}

static gint
handle_chip_stack_motion_event (GtkWidget *widget, GdkEventMotion *event)
{
  if (chip_stack_press_data->status == STATUS_IS_DRAG)
    {
      gdk_window_move (chip_stack_press_data->moving_chips,  
                       (gint)event->x - chip_stack_press_data->xoffset,
                       (gint)event->y - chip_stack_press_data->yoffset);
      gdk_window_clear (chip_stack_press_data->moving_chips);
      return TRUE;
    }
  else if (chip_stack_press_data->status == STATUS_MAYBE_DRAG
           && (fabs (chip_stack_press_data->xoffset - event->x) > 2.0 
               || fabs (chip_stack_press_data->yoffset - event->y) > 2.0))
    {
      chip_stack_press_data->status = STATUS_IS_DRAG;
      bj_chip_stack_press_data_generate ();
      bj_draw_take_snapshot();
      return TRUE;
    }
  else
    {
    }
  
  return FALSE;
}

gint
bj_event_motion_notify (GtkWidget *widget, GdkEventMotion *event)
{
  if (! handle_slot_motion_event (widget, event))
    if (! handle_chip_stack_motion_event (widget, event))
      handle_other_motion_event (widget, event);

  return TRUE;
}

gint
bj_event_enter_notify (GtkWidget *widget, GdkEventCrossing *event, void *d)
{
  gtk_widget_grab_focus (playing_area);

  return TRUE;
}

gint
bj_event_expose_callback (GtkWidget *widget, GdkEventExpose *event, void *d)
{
  bj_draw_refresh_screen ();

  return TRUE;
}

gint
bj_event_configure (GtkWidget *widget, GdkEventConfigure *event)
{
  gint tmptime;
  GtkSettings * settings;

  if (surface)
    {
      gint old_w, old_h;

      gdk_drawable_get_size (surface, &old_w, &old_h);
      if (old_w == event->width && old_h == event->height)
        return TRUE;
      g_object_unref (surface);
    }
  
  if (!draw_gc) {
    draw_gc = gdk_gc_new (playing_area->window);
    if (get_background_pixmap ())
      gdk_gc_set_tile (draw_gc, get_background_pixmap());
    gdk_gc_set_fill (draw_gc, GDK_TILED);
  }

  surface = gdk_pixmap_new
    (playing_area->window, event->width, event->height,
     gdk_drawable_get_visual (playing_area->window)->depth);
  
  bj_draw_refresh_screen ();

  /* Set up the double-click detection.*/
  if (!click_timer)
    click_timer = g_timer_new ();
  settings = gtk_settings_get_default ();
  g_object_get (G_OBJECT (settings), "gtk-double-click-time", &tmptime, NULL);
  dbl_click_time = tmptime / 1000.0;

  return FALSE;
}