#include "tier2/ifilesystem.h"
#include "tier1/interface.h"
#include "tier0/lib.h"

class CPAKFileHandle : public IFileHandle
{
public:

};

class CPAKFileSystem : public IFileSystem
{
public:
	virtual void Init() override {};
	virtual void Shutdown() override {};

	virtual IFileHandle *Open( const char *szFileName, int eOpCode ) override 
	{
		const char *szOperation;
		switch (eOpCode)
		{
		case FILEMODE_READ:
			szOperation = "r";
			break;
		default:
			V_printf("Operation is not supported\n");
			break;
		}
		return 0;

		CPAKFileHandle *pHandle = new CPAKFileHandle;
		return pHandle;
	}
	virtual size_t Write( IFileHandle *pFile, const void *pData, size_t nDataSize ) override
	{
		return 0;
	}
	virtual size_t Read( IFileHandle *pFile, void *pData, size_t nDataSize ) override
	{
		CPAKFileHandle *pHandle = (CPAKFileHandle*)pFile;
		if (!pHandle)
			return 0;
		return 0;
	}

	virtual size_t Seek( IFileHandle *pFile, ESeekMode eSeekMode, size_t nOffset ) override
	{
		int eLibcSeekMode = 0;
		switch (eSeekMode) {
		case SEEKMODE_RELATIVE_CURRENT:
			eLibcSeekMode = SEEK_CUR;
			break;
		case SEEKMODE_RELATIVE_END:
			eLibcSeekMode = SEEK_END;
			break;
		case SEEKMODE_RELATIVE_START:
			eLibcSeekMode = SEEK_SET;
			break;
		}
		CPAKFileHandle *pHandle = (CPAKFileHandle*)pFile;
		if (!pHandle)
			return 0;
	}

	virtual size_t Tell( IFileHandle *pFile ) override
	{
		CPAKFileHandle *pHandle = (CPAKFileHandle*)pFile;
		if (!pHandle)
			return 0;
	}
	virtual size_t Size( IFileHandle *pFile ) override
	{
		CPAKFileHandle *pHandle = (CPAKFileHandle*)pFile;
		if (!pHandle)
			return 0;
	}

	virtual void Close( IFileHandle *pFile ) override
	{
		CPAKFileHandle *pHandle = (CPAKFileHandle*)pFile;
		if (!pHandle)
			return;
		delete pHandle;
	}
	virtual CUtlBuffer<unsigned char> Read( IFileHandle *pFile ) override { return NULL; }; 
	virtual const char *ReadString( IFileHandle *pFile ) override { return NULL; };
};

EXPOSE_FILESYSTEM(CPAKFileSystem, "pakfs");