#include <cstdio>
#include <iostream>
#include <fstream>
#include "Define.h"

int ZipArchiver();

int main()
{
	std::printf("==================== Hello Zip! ====================\r\n");
	int iRet = 0;

	// Zip Format define check
	size_t iSizeTest = sizeof(LocalFileHeader);
	if (LOCAL_FILE_HEADER_BYTE != iSizeTest)
	{
		std::printf("1 Wrong Header Size : %d / %d \r\n", iSizeTest, LOCAL_FILE_HEADER_BYTE);
		iRet = -1;
	}
	iSizeTest = sizeof(CentralDirectory);
	if (CENTRAL_DIRECTORY_BYTE != iSizeTest)
	{
		std::printf("2 Wrong Header Size : %d / %d \r\n", iSizeTest, CENTRAL_DIRECTORY_BYTE);
		iRet = -1;
	}
	iSizeTest = sizeof(EoCDRecord);
	if (EOCD_BYTE != iSizeTest)
	{
		std::printf("3 Wrong Header Size : %d / %d \r\n", iSizeTest, EOCD_BYTE);
		iRet = -1;
	}

	// Main Zip archive method
	if (iRet != -1)
	{
		iRet = ZipArchiver();
	}

	return iRet;
}

int ZipArchiver()
{
	LocalFileHeader LFHeader;
	CentralDirectory CentDirec;
	EoCDRecord ECDR;

	using namespace std;

	ifstream fileIn("MyZip.txt", ios::binary);
	bool iRet = fileIn.is_open();
	if (!iRet)
	{
		printf("File open failed");
	}
	else
	{
		// 파일 크기 계산
		// seekg(offset, 목표점)
		fileIn.seekg(0, ios::end);
		streamsize fileInSize = fileIn.tellg();
		// beg == begin
		fileIn.seekg(0, ios::beg);

		// TODO : Buffering 으로 구현.
		// 메모리 할당
		uint8_t* pFile = (uint8_t *)malloc(fileInSize);

		// Read
		fileIn.read((char *)pFile, fileInSize);

		// Free
		free(pFile);
	}

	return iRet;
}