/***************************************************************************
 *   Copyright (C) 2009 by Stefan Bühler                                   *
 *   stbuehler@web.de                                                      *
 *                                                                         *
 *   This program 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 of the License, 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 "game.h"

#include <QGridLayout>
#include <QResizeEvent>
#include <QMouseEvent>
#include <QPainter>
#include <QStatusBar>

#include <QMenuBar>
#include <QMenu>
#include <QAction>
#include <QActionGroup>

#include "ai.h"

namespace toruschess {

	static QAction *makeAction(QObject *parent, const QString &text, const QObject * receiver, const char * member, const QKeySequence &shortcut = QKeySequence(), QActionGroup *group = NULL) {
		QAction *a = new QAction(text, parent);
		a->setShortcut(shortcut);
		if (group) a->setActionGroup(group);
		QObject::connect(a, SIGNAL(triggered(bool)), receiver, member);
		return a;
	}

	GameWidget::GameWidget(QWidget *parent)
	: QMainWindow(parent), m_game(new Game()), m_optionDlg(new OptionDlg(m_game, this)), m_viewMode((ViewMode) -1) {
		connect(this, SIGNAL(changedViewMode(ViewMode)), m_optionDlg, SLOT(changedViewMode(ViewMode)));
		connect(m_optionDlg, SIGNAL(setViewMode(ViewMode)), this, SLOT(setViewMode(ViewMode)));
		
		setWindowTitle("Torus Chess");
		
		QWidget *centralWidget = new QWidget(this);
		m_fieldsLayout = new QStackedLayout(centralWidget);
		m_field2d = new Field2D(m_game, centralWidget);
		m_field3d = new Field3D(m_game, centralWidget);
			m_fieldsLayout->addWidget(m_field2d);
		m_fieldsLayout->addWidget(m_field3d);
		centralWidget->setLayout(m_fieldsLayout);
		setCentralWidget(centralWidget);
		
		statusBar()->show();
		connect(m_game, SIGNAL(changed(GameState)), this, SLOT(gameChanged(GameState)));
		m_game->restart();
		
		QAction
			*act_game_newGame = makeAction(this, "&New Game", this, SLOT(menuRestart()), Qt::Key_F2),
			*act_game_options = makeAction(this, "&Options", this, SLOT(menuOptions()), Qt::CTRL + Qt::Key_O),
			*act_game_quit = makeAction(this, "&Quit", this, SLOT(close()));
		
		QActionGroup *viewGroup = new QActionGroup(this);
		m_act_view_2d = makeAction(this, "&2D-View", this, SLOT(menuView2d()), Qt::CTRL + Qt::Key_2, viewGroup);
		m_act_view_3d = makeAction(this, "&3D-View", this, SLOT(menuView3d()), Qt::CTRL + Qt::Key_3, viewGroup);
		m_act_view_torus = makeAction(this, "&Torus-View", this, SLOT(menuViewTorus()), Qt::CTRL + Qt::Key_4, viewGroup);
		
		act_game_quit->setMenuRole(QAction::QuitRole);
		
		QMenuBar *menuBar = new QMenuBar(this);
		QMenu *menuGame = menuBar->addMenu("&Game");
		menuGame->addAction(act_game_newGame);
		menuGame->addAction(act_game_options);
		menuGame->addSeparator();
		menuGame->addAction(act_game_quit);
		QMenu *menuView = menuBar->addMenu("&View");
		menuView->addActions(viewGroup->actions());
		setMenuBar(menuBar);
		
		setViewMode(VIEW_2D);
		updateGeometry();
	}
	
	void GameWidget::gameChanged(GameState state) {
		statusBar()->showMessage(state2string(state));
	}
	
	void GameWidget::menuRestart() {
		m_game->restart();
	}
	
	void GameWidget::menuOptions() {
		m_optionDlg->exec();
	}
	
	void GameWidget::setViewMode(ViewMode viewMode) {
		if (m_viewMode == viewMode) return;
		m_viewMode = viewMode;
		switch (m_viewMode) {
		case VIEW_2D:
			m_fieldsLayout->setCurrentIndex(0);
			m_act_view_2d->setChecked(true);
			break;
		case VIEW_3D:
			m_fieldsLayout->setCurrentIndex(1);
			m_act_view_3d->setChecked(true);
			m_field3d->setBoardMode(Field3D::PLANE);
			break;
		case VIEW_TORUS:
			m_fieldsLayout->setCurrentIndex(1);
			m_act_view_torus->setChecked(true);
			m_field3d->setBoardMode(Field3D::TORUS);
			break;
		}
		emit changedViewMode(viewMode);
	}
	
	void GameWidget::menuView2d() {
		setViewMode(VIEW_2D);
	}
	void GameWidget::menuView3d() {
		setViewMode(VIEW_3D);
	}
	void GameWidget::menuViewTorus() {
		setViewMode(VIEW_TORUS);
	}
	
}