//---------------------------------------------------------------------------
#pragma hdrstop
#include "LogData.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
//---------------------------------------------------------------------------
int LogIndex;
TList *LogList;
//---------------------------------------------------------------------------
// 로그 생성
bool __fastcall CreateLog()
{
	LogList = new TList;
  InitLog();

  return LogList != NULL;
}
//---------------------------------------------------------------------------
// 로그 초기화
void __fastcall InitLog()
{
  TLogData *LogData = NULL;

  LogIndex = 0;

  if (LogList) {
    for (int i = 0; i < LogList->Count; i++) {
      LogData = (TLogData *)LogList->Items[i];
      if (LogData) delete LogData;
    }

    LogList->Clear();
  }
}
//---------------------------------------------------------------------------
// 로그 기록의 시작
TLogData * __fastcall BeginLog(String strParam, String strFileName
  , String strFunctionName, int nLine)
{
  TLogData *LogData = new TLogData;

  LogData->nIndex = LogIndex;
  LogData->dtCurrent = TDateTime::CurrentDateTime();
  if (strParam.IsEmpty() == false) {
		LogData->strParameter = "Param:" + strParam + ", ";
  }
  else {
		LogData->strParameter = " ";
	}
	LogData->strFileName = strFileName + ", ";
	LogData->strFunctionName = strFunctionName + ", ";
  LogData->nLine = nLine;

  LogList->Add(LogData);

  LogIndex++;

  return LogData;
}
//---------------------------------------------------------------------------
// 로그 기록의 끝 (함수가 문제 없이 종료되면 로그 기록을 삭제한다)
void __fastcall EndLog(TLogData *LogData)
{
  TLogData *TempLogData = NULL;

  if (LogData && LogList) {
		// 최근에 호출된 내용이 가장 마지막에 있으므로 뒤에서부터 검색하는 것이 빠르다
		for (int i = LogList->Count-1; 0 <= i; i--) {
      TempLogData = (TLogData *)LogList->Items[i];

      if (TempLogData && TempLogData->nIndex == LogData->nIndex) {
        delete TempLogData;
        TempLogData = NULL;
        LogList->Delete(i);
        break;
      }
    }
  }
}
//---------------------------------------------------------------------------
// 로그 저장
bool __fastcall ExceptionLog(HANDLE hFile)
{
  String strFile, strDateTime, strLine, strData;
	TLogData *LogData = NULL;
  DWORD dwWrite;

	if (hFile) {
		strData =  "LOG      :\r\n";
		if (!WriteFile(hFile, strData.c_str(), sizeof(Char)*strData.Length(), &dwWrite, NULL)) return false;

		if (LogList) {
			for (int i = 0; i < LogList->Count; i++) {
				LogData = (TLogData *)LogList->Items[i];

				strDateTime = LogData->dtCurrent.FormatString("yyyy-mm-dd hh:nn:ss") + ",";
				strLine = IntToStr(LogData->nLine) + " Line\r\n";
				strData = "            [" + IntToStr(LogData->nIndex) + "] " + strDateTime + LogData->strParameter;
				strData += LogData->strFileName + LogData->strFunctionName + strLine;

				if (!WriteFile(hFile, strData.c_str(), sizeof(Char)*strData.Length(), &dwWrite, NULL)) return false;
			}
		}
	}

  // 다음 Exception에 기록되지 않도록 초기화한다
  InitLog();

  return true;
}
//---------------------------------------------------------------------------
// 종료시 로그 저장 (BEGIN_LOG, END_LOG쌍 검출 용)
bool __fastcall SaveLog(String strDir)
{
	HANDLE hFile = NULL;
	DWORD dwWrite;
	Char cUnicodeFile = 0xFEFF;

	// 로그가 있을 경우만 저장
	if (0 < LogList->Count) {
		// 현재 날짜 시간이 파일명이 됨
	if ((hFile = CreateFile(String(strDir+"\\"+Now().FormatString("yyyy-mm-dd hh-nn-ss")+".log").c_str(), GENERIC_WRITE, 0, NULL, OPEN_ALWAYS,
					FILE_ATTRIBUTE_NORMAL, NULL)) == INVALID_HANDLE_VALUE) goto fail;
		if (SetFilePointer(hFile, 0, 0, FILE_END) == 0xFFFFFFFF) goto fail;               // 맨 뒤쪽에 추가

		// Unicode일 경우 저장 - by monkman (2010.07.21)
#ifdef UNICODE
		if (!WriteFile(hFile, &cUnicodeFile, sizeof(Char), &dwWrite, NULL)) goto fail;
#endif
		ExceptionLog(hFile);

    if (hFile) CloseHandle(hFile);
  }
  hFile = NULL;

  return true;

fail:
  if (hFile) CloseHandle(hFile);
  hFile = NULL;

  return false;
}
//---------------------------------------------------------------------------
// 로그 삭제
void __fastcall DeleteLog()
{
  if (LogList) {
    InitLog();
    delete LogList;
  }

  LogList = NULL;
}
//---------------------------------------------------------------------------