/*
This source file is part of KBEngine
For the latest info, see http://www.kbengine.org/

Copyright (c) 2008-2012 KBEngine.

KBEngine is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

KBEngine 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 Lesser General Public License for more details.
 
You should have received a copy of the GNU Lesser General Public License
along with KBEngine.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef __DATA_DOWNLOAD__
#define __DATA_DOWNLOAD__

#include "helper/debug_helper.hpp"
#include "cstdkbe/cstdkbe.hpp"
#include "cstdkbe/memorystream.hpp"
#include "thread/threadtask.hpp"
#include "network/message_handler.hpp"

namespace KBEngine{

class DataDownloads;

class DataDownload : public thread::TPTask
{
public:
	DataDownload(PyObjectPtr objptr, 
		const std::string & descr, int16 id);

	virtual ~DataDownload();
	
	virtual bool checkDescr(){ return true; }

	void pDataDownloads(DataDownloads* pDataDownloads){ pDataDownloads_ = pDataDownloads; }
	DataDownloads* pDataDownloads(){ return pDataDownloads_; }

	virtual thread::TPTask::TPTaskState presentMainThread();

	void entityID(ENTITY_ID entityID){ entityID_ = entityID; }
	ENTITY_ID entityID(){ return entityID_; }

	bool send(const Mercury::MessageHandler& msgHandler, Mercury::Bundle* pBundle);

	void id(int16 i){ id_ = i; }
	int16 id()const{ return id_; }

	uint32 totalBytes()const{ return totalBytes_; }

	virtual char* getOutStream(){ return stream_; }

	virtual int8 type() = 0;
protected:
	PyObjectPtr objptr_;
	std::string descr_;
	int16 id_;
	DataDownloads* pDataDownloads_;

	bool sentStart_;

	uint32 totalBytes_;

	// ܹ͵ֽ
	uint32 totalSentBytes_;
	uint32 remainSent_;
	uint32 currSent_;

	char* stream_;

	ENTITY_ID entityID_;

	bool error_;
};

class StringDataDownload : public DataDownload
{
public:
	StringDataDownload(PyObjectPtr objptr, 
		const std::string & descr, int16 id);

	virtual ~StringDataDownload();

	virtual bool process();

	virtual char* getOutStream();

	virtual int8 type();
};

class FileDataDownload : public DataDownload
{
public:
	FileDataDownload(PyObjectPtr objptr, 
		const std::string & descr, int16 id);

	virtual ~FileDataDownload();

	virtual bool process();

	virtual int8 type();
protected:
	std::string path_;
	
};

}
#endif