/***************************************************************************
 *   Copyright (C) 2008 by Oliver Groß                                     *
 *   z.o.gross@gmx.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 <QImage>
#include <QIcon>

#include "ccrosspackage.h"
#include "cnonogram.h"
#include "ccrosspackagemodel.h"
#include "constants.h"

#define COL_NAME 0
#define COL_TIME 1

namespace libqnono {
	QString formatedTime(quint32 seconds, bool showSeconds = false) {
		quint32 strippedSeconds = seconds % 60;
		quint8 minutes = seconds / 60;
		quint8 hours   = minutes / 60;
		
		QString result;
		
		if (hours) {
			if (hours < 10)
				result += '0';
			result += QString::number(hours);
			result += ':';
		}
		
		minutes %= 60;
		
		if (minutes < 10)
			result += '0';
		result += QString::number(minutes);
		
		if (showSeconds) {
			result += ':';
			if (strippedSeconds < 10)
				result += '0';
			result += QString::number(strippedSeconds);
		}
		return result;
	}
	
//public:
	CCrossPackageModel::CCrossPackageModel(QObject * parent) : QAbstractItemModel(parent),
		m_Package(NULL) {
	}
	
	CCrossPackageModel::~CCrossPackageModel() {
		setPackage(NULL);
	}
	
	void CCrossPackageModel::setPackage(libqnono::CCrossPackage * package) {
		if (m_Package)
			m_Package->pictures().clear();
		
		m_Package = package;
		
		if (m_Package && m_Package->pictures().isEmpty())
			m_Package->readAll();
		
		reset();
	}
	
	QModelIndex CCrossPackageModel::index(int row, int column, const QModelIndex & /*parent*/) const {
		return (m_Package) && (column >= 0) && (row >= 0) && (row < m_Package->pictures().size()) ?
			createIndex(row, column, static_cast<void *>(m_Package->pictures()[row])) :
			QModelIndex();
	}
	
	QVariant CCrossPackageModel::data(const QModelIndex & index, int role) const {
		if (!index.isValid())
			return QVariant();
		
		switch (index.column()) {
		case COL_NAME:
			switch (role) {
			case Qt::DecorationRole:
				return static_cast<CNonogram *>(index.internalPointer())->timeout() ?
					QIcon(LIBQCROSS_ICON_TIMEOUT) :
					QIcon(LIBQCROSS_ICON_TIMETRIAL);
			case Qt::EditRole:
			case Qt::DisplayRole:
				return static_cast<CNonogram *>(index.internalPointer())->name();
			default:
				break;
			}
			break;
		case COL_TIME:
			if (role == Qt::DisplayRole)
				return formatedTime(static_cast<CNonogram *>(index.internalPointer())->timeout());
			break;
		default:
			break;
		}
		return QVariant();
	}
	
	int CCrossPackageModel::rowCount(const QModelIndex & parent) const {
		if (m_Package && !parent.isValid())
			return m_Package->pictures().size();
		else
			return 0;
	}
	
	int CCrossPackageModel::columnCount(const QModelIndex & /*parent*/) const {
		return 2;
	}
	
	QVariant CCrossPackageModel::headerData(int section, Qt::Orientation /*orientation*/, int role) const {
		if (role == Qt::DisplayRole) {
			switch (section) {
			case COL_NAME:
				return tr("Nonogram");
			case COL_TIME:
				return tr("Time");
			default:
				break;
			}
		}
		
		return QVariant();
	}
	
	Qt::ItemFlags CCrossPackageModel::flags(const QModelIndex & index) const {
		if (index.column() == COL_NAME)
			return QAbstractItemModel::flags(index) | Qt::ItemIsEditable;
		else
			return QAbstractItemModel::flags(index);
	}
	
	QModelIndex CCrossPackageModel::parent(const QModelIndex &) const {
		return QModelIndex();
	}
	
	bool CCrossPackageModel::hasChildren(const QModelIndex & parent) const {
		return m_Package && !parent.isValid();
	}
	
	bool CCrossPackageModel::setData(const QModelIndex & index, const QVariant & value, int role) {
		if (index.isValid() && role == Qt::EditRole) {
			QString name = value.toString();
			if (name.isEmpty())
				return false;
			
			foreach (CNonogram * i, m_Package->pictures()) {
				if (i->name() == name)
					return false;
			}
			
			m_Package->pictures()[index.row()]->setName(name);
			emit dataChanged(index, index);
			return true;
		}
		return false;
	}
	
	bool CCrossPackageModel::appendEmpty(QString name, QSize size, bool fillValue) {
		if (!m_Package)
			return false;
		
		beginInsertRows(QModelIndex(), m_Package->pictures().size(), 1);
		
		CNonogram * newNonogram = new CNonogram(size);
		newNonogram->fill(fillValue);
		newNonogram->setName(name);
		
		m_Package->pictures() << newNonogram;
		
		endInsertRows();
		return true;
	}
	
	bool CCrossPackageModel::appendImage(QString name, QImage image) {
		if (!m_Package)
			return false;
		
		CNonogram * newNonogram = new CNonogram();
		newNonogram->loadFromImage(image);
		newNonogram->setName(name);
		newNonogram->setTimeout(60*60); // set an hour as default timeout
		
		if (newNonogram->isValid()) {
			beginInsertRows(QModelIndex(), m_Package->pictures().size(), 1);
			
			m_Package->pictures() << newNonogram;
			
			endInsertRows();
			return true;
		}
		else {
			delete newNonogram;
			return false;
		}
	}
	
	bool CCrossPackageModel::insertRows(int row, int count, const QModelIndex & parent) {
		if (!m_Package)
			return false;
		
		beginInsertRows(parent, row, count);
		
		CNonogram * newNonogram;
		
		for (int i = row; i < row+count; ++i) {
			newNonogram = new CNonogram();
			newNonogram->fill(false);
			m_Package->pictures() << newNonogram;
		}
		
		endInsertRows();
		return true;
	}
	
	bool CCrossPackageModel::removeRows(int row, int count, const QModelIndex & parent) {
		if (!m_Package)
			return false;
		
		beginRemoveRows(parent, row, row+count-1);
	
		for (int i = row; i < row+count; ++i)
			delete m_Package->pictures().takeAt(i);
	
		endRemoveRows();
		return true;
	}

}