#pragma once

#include "libNPK.h"

namespace NPK
{

class CNPKFile : public INPKFile
{
public:
	//"NeoplePack_Bill\0"
	static const char* kNPKFileHeaderMagic;
	static const int32_t kNPKFileHeaderMagicSize = 16;

	//"puchikon@neople dungeon and fighter DNFDNFDNFDNFDNFDNFDNFDNFDNFDNFDN..."
	static const char* kNPKFileNameXorCode;
	static const int32_t kNPKFileNameXorCodeSize = 256;

	typedef struct {
		char szFileHeadMagic[kNPKFileHeaderMagicSize];
		int32_t nFileCounts;
	} NPKFileHeader;

	typedef struct {
		uint32_t fileOffset;
		uint32_t fileSize;
		char szFileName[256];
	} FileInfo;

public:
	virtual bool openPakFile(const char* szPackFileName) override;

	virtual bool closePakFile(void) override;

	virtual int32_t getFileCount(void) const override { 
		return m_nFileCounts; 
	}

	virtual bool getFileNode(int32_t index, FileNode& fileNode) const override;

	virtual IFileStream* openFileStream(const char* szFileName) override;

	virtual void closeFileStream(IFileStream* fileStream) override;

private:
	bool checkPakFileHash(void);
	void buildHashFileList(void);

private:
	std::string m_strPackFileName;
	HANDLE m_hPakFile = NULL;
	int32_t m_nFileCounts = 0;

	typedef std::vector<FileNode> FileList;
	FileList m_fileList;

	typedef std::unordered_map<std::string, int32_t> FileHashList;
	FileHashList m_hashFileList;

public:
	CNPKFile();
	virtual ~CNPKFile();
};

}