/*
 * CZipSaver.h, part of VCMI engine
 *
 * Authors: listed in file AUTHORS in main folder
 *
 * License: GNU General Public License v2.0 or later
 * Full text of license available in license.txt file, in main folder
 *
 */
#pragma once

#include "COutputStream.h"

#include "MinizipExtensions.h"

VCMI_LIB_NAMESPACE_BEGIN

class CZipSaver;

class DLL_LINKAGE CZipOutputStream: public COutputStream
{
public:
	/**
	 * @brief constructs zip stream from already opened file
	 * @param archive archive handle, must be opened
	 * @param archiveFilename name of file to write
	 */
	explicit CZipOutputStream(CZipSaver * owner_, zipFile archive, const std::string & archiveFilename);
	~CZipOutputStream();

	si64 write(const ui8 * data, si64 size) override;

	si64 seek(si64 position) override {return -1;};
	si64 tell() override {return 0;};
	si64 skip(si64 delta) override {return 0;};
	si64 getSize() override {return 0;};
private:
	zipFile handle;
	CZipSaver * owner;
};

class DLL_LINKAGE CZipSaver
{
public:
	explicit CZipSaver(std::shared_ptr<CIOApi> api, const boost::filesystem::path & path);
	virtual ~CZipSaver();

	std::unique_ptr<COutputStream> addFile(const std::string & archiveFilename);
private:
	std::shared_ptr<CIOApi> ioApi;
	zlib_filefunc64_def zipApi;

	zipFile handle;

	///due to minizip design only one file stream may opened at a time
	COutputStream * activeStream;
	friend class CZipOutputStream;
};

VCMI_LIB_NAMESPACE_END