/*=============================================================================
	log.cpp: Basic OpenGL Framework logging function definitions

    Revision history:
	* Created by Zack Smith
	* Inspired by code written by NeHe (http://nehe.gamedev.net/)
	* Updated October 10, 2000
=============================================================================*/

#include <windows.h>
#include <stdio.h>
#include <stdarg.h>
#include "log.h"

CLog::CLog(const char *szPath, const char* szMode)
{
	// if nothing was put use the default
	if(szPath == NULL)
	{
		CreateDirectory("logs", NULL);
		m_szPath = "logs/log.txt";
	}
	else
		m_szPath = szPath;

	m_fLog = fopen(m_szPath.c_str(), "w+"); // destroy anything existing
	if(m_fLog)
	{
		fprintf(m_fLog, "Logging System Initialized \n");
		fclose(m_fLog);
	} else
		MessageBox(NULL,"Error Starting Logging System","ERROR",MB_OK);
		
	m_fLog = '\0';
}

CLog::~CLog()
{
	Log("\nShutting Down Logging System");
	Close();

	OutputDebugString("CLog destructor\n");
}

void CLog::Open()
{
	// if it isnt already opened, open the file for adding on to
	if(!m_fLog)
	{
		m_fLog = fopen(m_szPath.c_str(),"a");
	}
}

void CLog::Close()
{
	// if the file is open, close it
	if(m_fLog)
	{
		fclose(m_fLog);
		m_fLog = '\0';
	}
}

void CLog::Log(char *szText, ...)
{
	// open the file
	Open();
	if(!m_fLog) // error somewhere
		return;
	va_list arglist;
	char Text[1024]; // more than 1024 causes a buffer overrun
	memset(Text, '\0', sizeof(Text)); // clear out the memory

	va_start(arglist,szText);
	vsprintf(Text,szText,arglist);
	va_end(arglist);
	fprintf(m_fLog,"\n%s",Text); // copy to the file
	Close(); // and close the file
}