// Log.h: interface for the CLog class.
//
//////////////////////////////////////////////////////////////////////
#pragma once

#include <windows.h>
#include <string>
using namespace std;

enum enmLogLevel{
	LogLvlFatal=0,
	LogLvlFailed,
	LogLvlError,
	LogLvlWarn,
	LogLvlInfo,
	LogLvlTrace,
	LogLvlDebug,
	LogLvlAll
};



class CLog 
{
public:
	CLog();
	~CLog();
public:
	void SetMinLevel(UINT nLevel){m_nMinLevel=nLevel;};
	void Put(wstring Msg, UINT nLevel = LogLvlFatal);
	void Put(string Msg, UINT nLevel = LogLvlFatal);
	void PutMsg(UINT nLevel,const char *szFmt, ...);
	BOOL Init(const char* pszFileName,UINT nMinLevel,int nMaxSize=1*1024*1024);

protected:
	UINT m_nMinLevel;
	UINT m_nMaxLogSize;
	static string logDescripe[];

	typedef struct __tagLogIndex{
		DWORD dwPos;
		DWORD dwLen;
		BYTE nLevel;
		__tagLogIndex():dwPos(0L),dwLen(0L),nLevel(LogLvlAll)
		{
		};
	}LOGINDEX;

	HANDLE m_hFile;
	
	LOGINDEX m_idx;
	string m_FileName;
	CRITICAL_SECTION m_cs;
	char* m_pBuf;
	int m_bufSize;
};


class CFunc_trace
{
public:
	string funname;
	CLog* plog;
	UINT loglevel;
	string time;
	CFunc_trace(string name, CLog* log, UINT level)
	{
		funname = name;
		plog = log;
		loglevel = level;
		SYSTEMTIME st;
		GetLocalTime(&st);
		char chBuf[24] = { 0 };
		sprintf(chBuf, "%02d:%02d_%02d ",st.wMinute, st.wSecond,st.wMilliseconds);
		time = chBuf;
		if (plog)
		{
			plog->PutMsg(loglevel, "+++  %s %s +++", funname.c_str(),time.c_str());
		}
	}
	~CFunc_trace()
	{
		if (plog)
		{
			plog->PutMsg(loglevel, "---  %s %s ---", funname.c_str(), time.c_str());
		}
	}
};