/***************************************************************************
 *   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 "ccrosspackage.h"
#include "cnonogram.h"
#include <QDataStream>
#include <QFile>

namespace libqcross {
//public:
	CCrossPackage::CCrossPackage() {}
	CCrossPackage::CCrossPackage(QString fileName) : m_FileName(fileName) {}
	
	CCrossPackage::~CCrossPackage() {
		foreach (CNonogram * i, m_PictureList) {
			delete i;
		}
	}
	
	bool CCrossPackage::open() {
		if (m_FileName.isEmpty())
			return false;
		
		qDebug("opening file: %s", m_FileName.toAscii().data());
		QFile file(m_FileName);
		if (!file.open(QIODevice::ReadOnly))
			return false;
		
		QDataStream in(&file);
		in.setVersion(QDataStream::Qt_4_0);
		
		QString stringBuffer;
// 		qint32 intBuffer;
		QSize sizeBuffer;
		
// 		CNonogram * newPicture = NULL;
		
// 		qint32 pictureCount = 0;
		
		if (in.atEnd()) {
			qCritical("invalid package file - no header");
			file.close();
			return false;
		}
		in >> stringBuffer;
		
		if ((stringBuffer != "QCROSSPACKAGE")) {
			qCritical("invalid package file - invalid header: %s", stringBuffer.toAscii().data());
			file.close();
			return false;
		}
		
		if (in.atEnd()) {
			qCritical("invalid package file - no package name");
			file.close();
			return false;
		}
		in >> m_Name;
		
		file.close();
		return true;
	}
	
	bool CCrossPackage::readAll() {
		if (m_FileName.isEmpty())
			return false;
		
		qDebug("reading file: %s", m_FileName.toAscii().data());
		QFile file(m_FileName);
		if (!file.open(QIODevice::ReadOnly))
			return false;
		
		m_PictureList.clear();
		
		QDataStream in(&file);
		in.setVersion(QDataStream::Qt_4_0);
		
		QString stringBuffer;
		qint32 intBuffer;
		QSize sizeBuffer;
		
		CNonogram * newPicture = NULL;
		
		qint32 pictureCount = 0;
		
		if (in.atEnd()) {
			qCritical("invalid package file - no header");
			file.close();
			return false;
		}
		in >> stringBuffer;
		
		if ((stringBuffer != "QCROSSPACKAGE")) {
			qCritical("invalid package file - invalid header: %s", stringBuffer.toAscii().data());
			file.close();
			return false;
		}
		
		if (in.atEnd()) {
			qCritical("invalid package file - no package name");
			file.close();
			return false;
		}
		in >> stringBuffer;
		
		if (in.atEnd()) {
			qCritical("invalid package file - no picture count");
			file.close();
			return false;
		}
		in >> pictureCount;
		
		unsigned char data;
		int i;
		for (i = 0; i < pictureCount && !in.atEnd(); i++) {
			in >> stringBuffer;
			qDebug("reading image: %s", stringBuffer.toAscii().data());
			if (in.atEnd()) {
				qCritical("invalid package file - no picture name");
				file.close();
				return false;
			}
			
			in >> intBuffer;
			qDebug("width %i", intBuffer);
			if (in.atEnd()) {
				qCritical("invalid package file - no picture width");
				file.close();
				return false;
			}
			
			sizeBuffer.setWidth(intBuffer);
			
			in >> intBuffer;
			qDebug("height %i", intBuffer);
			if (in.atEnd()) {
				qCritical("invalid package file - no picture height");
				file.close();
				return false;
			}
			
			sizeBuffer.setHeight(intBuffer);
			
			newPicture = new CNonogram(sizeBuffer);
			newPicture->setName(stringBuffer);
			
			in >> intBuffer;
			qDebug("timeout %i", intBuffer);
			if (in.atEnd()) {
				qCritical("invalid package file - no picture timeout");
				delete newPicture;
				file.close();
				return false;
			}
			
			newPicture->setTimeout(intBuffer);
			
			for (int x = 0; x < sizeBuffer.width(); x++) {
				int y = 0;
				
				while (y < sizeBuffer.height()) {
					if (in.atEnd()) {
						qCritical("invalid package file - data");
						delete newPicture;
						file.close();
						return false;
					}
					
					in.readRawData((char *)&data, 1);
					
					int b;
					for (b = 0; b < 8; b++) {
						if (y < sizeBuffer.height())
							newPicture->setPixel(x, y, (bool)(data & 0x80));
						data = data << 1;
						y++;
					}
					
					
// 					out.writeRawData((char *)&data, 1);
// 					newPicture->setPixel(x, y, (bool)(data & 0x80));
// 					data = data << 1;
// 					y++;
// 					if (!(y % 8))
// 						in.readRawData((char *)&data, 1);
				}
			}
			
			
			m_PictureList << newPicture;
		}
		
		if (i < pictureCount)
			qWarning("damaged package file - invalid picture count");
		
		file.close();
		return true;
	}
	
	bool CCrossPackage::save() {
		QFile file(m_FileName);
		if (!file.open(QIODevice::WriteOnly))
			return false;
		
		QDataStream out(&file);
		out.setVersion(QDataStream::Qt_4_0);
		
		out << QString("QCROSSPACKAGE");
		out << m_Name;
		out << (qint32)(m_PictureList.size());
		
		unsigned char data = 0;
		
		foreach (CNonogram * i, m_PictureList) {
			out << i->name();
			out << (qint32)i->width();
			out << (qint32)i->height();
			out << (qint32)i->timeout();
			
			for (int x = 0; x < i->width(); x++) {
				data = 0x00;
				int y = 0;
				while (y < i->height()) {
					int b;
					for (b = 0; b < 8; b++) {
						data = data << 1;
						if (y < i->height() && i->pixel(x, y))
							data |= 0x01;
						y++;
					}
					
					out.writeRawData((char *)&data, 1);
					
// 					if (i->pixel(x, y))
// 						data |= 0x01;
// 					
// 					y++;
// 					if (!(y % 8)) {
// 						out.writeRawData((char *)&data, 1);
// 						data = 0x00;
// 					}
// 					
// 					data = data << 1;
				}
// 				if (y % 8)
// 					out.writeRawData((char *)&data, 1);
			}
		}
		
		file.close();
		return true;
	}
}