#include "mars_log.h"

#include <iomanip>
#include <time.h>

namespace mars
{
	Log g_log;

	Log::Log( const std::string & sFilename /*= "mars.log"*/, const Level enLevel /*= Fatal*/, const unsigned int enSettings /*= Function | Time*/ )
		: _outfile(sFilename), _tTimeStart(time(NULL)), _enSettings(enSettings), _enLevel(enLevel)
	{
		_outfile << "Log started, be nice" << std::endl;
	}

	Log::~Log()
	{
		_outfile.close();
	}

	mars::Outputter Log::stream( const Level enLevel /*= Log::Info*/, const char * szFile /*= NULL*/, const char * szFunction /*= NULL*/, const unsigned int nLine /*= 0*/ )
	{
		if (enLevel <= _enLevel)
			return Outputter(&_outfile, _enSettings, &_mutex, time(NULL) - _tTimeStart, szFile, nLine, szFunction, boost::this_thread::get_id());
		else
			return Outputter();
	}

	Log & Log::getSingleton()
	{
		return g_log;
	}

	Outputter::Outputter() : _pOut(NULL), _pMutex(NULL) {}

	Outputter::Outputter( std::ofstream * pOut, const unsigned int enSettings, boost::mutex * pMutex, const time_t & tTime, const char * szFile, const unsigned int nLine, const char * szFunction, const boost::thread::id & idThread ) 
		: _pOut (pOut), _pMutex(pMutex)
	{
		_pMutex->lock();

		if (enSettings & Log_Time)
			*_pOut 
				<< std::put_time(std::localtime(&tTime), "HMS");

		if ((enSettings & Log_File) != 0 && szFile != NULL)
			*_pOut << " " << szFile;
		if ((enSettings & Log_Line) != 0 && nLine > 0)
			*_pOut << " (" << nLine << ")";
		if ((enSettings & Log_Function) != 0 && szFunction != NULL)
			*_pOut << " " << szFunction;
		if ((enSettings & Log_Thread))
			*_pOut << " - [thread:" << idThread << "]";

		*_pOut << ": \t";
	}

	Outputter::~Outputter()
	{
		if (_pOut != NULL && _pMutex != NULL)
		{
			*_pOut << std::endl;
			_pOut->flush();
			_pMutex->unlock();
		}
	}

}