#include "tlog.h"
//#include "tfilepath.h"
#include "tfilepath_io.h"
#include <QDateTime>

#ifdef WIN32
#pragma warning(disable : 4996)
#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#include <tchar.h>

#else
#include <syslog.h>
#include <unistd.h>
#include <sys/timeb.h>
#endif

#include "tthreadmessage.h"
#include "tsystem.h"
#include <fstream>

using namespace TSysLog;
namespace
{

enum LEVEL {
	LEVEL_SUCCESS,
	LEVEL_ERROR,
	LEVEL_WARNING,
	LEVEL_INFO
};

#ifdef WIN32
WORD Level2WinEventType(LEVEL level)
{
	switch (level) {
	case LEVEL_SUCCESS:
		return EVENTLOG_SUCCESS; // Success event
	case LEVEL_ERROR:
		return EVENTLOG_ERROR_TYPE; // Error event
	case LEVEL_WARNING:
		return EVENTLOG_WARNING_TYPE; //Warning event
	case LEVEL_INFO:
		return EVENTLOG_INFORMATION_TYPE; // Information event
										  //      case : return EVENTLOG_AUDIT_SUCCESS Success audit event
										  //      case : return EVENTLOG_AUDIT_FAILURE Failure audit event
	default:
		return LEVEL_WARNING;
	}
}
#else
int Level2XPriority(LEVEL level)
{
	switch (level) {
	case LEVEL_SUCCESS:
		return LOG_INFO;
	case LEVEL_ERROR:
		return LOG_ERR; // Errors.
	case LEVEL_WARNING:
		return LOG_WARNING; // Warning messages.
	case LEVEL_INFO:
		return LOG_INFO; // Informational messages.
	default:
		return LEVEL_WARNING;
	}
}
#endif

void notify(LEVEL level, const QString &msg)
{
#ifdef WIN32
	TCHAR buf[_MAX_PATH + 1];

	GetModuleFileName(0, buf, _MAX_PATH);

	HANDLE handle = RegisterEventSource(NULL,							   // uses local computer
										TFilePath(buf).getName().c_str()); // source name

	LPCTSTR lpszStrings[2];
	TCHAR szMsg[256];
	DWORD dwErr = 1;
	_stprintf(szMsg, TEXT("%s error: %d"), "appname", dwErr);

	lpszStrings[0] =
		lpszStrings[1] = (LPCTSTR)msg.data();
	ReportEvent(handle,					   // event log handle
				Level2WinEventType(level), // event type
				0,						   // category zero
				dwErr,					   // event identifier
				NULL,					   // no user security identifier
				1,						   // one substitution string
				0,						   // no data
				lpszStrings,			   // pointer to string array
				NULL);					   // pointer to data

	DeregisterEventSource(handle);

#else
	std::string str = msg.toStdString();
	syslog(Level2XPriority(level), str.c_str());
#endif
}

static TThread::Mutex MyMutex;
} //namespace

//------------------------------------------------------------------------------

void TSysLog::success(const QString &msg)
{
	QMutexLocker sl(&MyMutex);
	notify(LEVEL_SUCCESS, msg);
}

//------------------------------------------------------------------------------

void TSysLog::warning(const QString &msg)
{
	QMutexLocker sl(&MyMutex);
	notify(LEVEL_WARNING, msg);
}

//------------------------------------------------------------------------------

void TSysLog::error(const QString &msg)
{
	QMutexLocker sl(&MyMutex);
	notify(LEVEL_ERROR, msg);
}

//------------------------------------------------------------------------------

void TSysLog::info(const QString &msg)
{
	QMutexLocker sl(&MyMutex);
	notify(LEVEL_INFO, msg);
}

//==============================================================================

class TUserLog::Imp
{
public:
	Imp() : m_os(&std::cout), m_streamOwner(false) {}

	Imp(const TFilePath &fp)
		: m_os(new Tofstream(fp)), m_streamOwner(true) {}

	~Imp()
	{
		if (m_streamOwner)
			delete m_os;
	}

	void write(const QString &msg);

	TThread::Mutex m_mutex;
	std::ostream *m_os;
	bool m_streamOwner;
};

//------------------------------------------------------------------------------

void TUserLog::Imp::write(const QString &msg)
{
	QMutexLocker sl(&MyMutex);
	*m_os << msg.toStdString();
	m_os->flush();
}

//--------------------------------------------------------------------

namespace
{

//--------------------------------------------------------------------

QString myGetCurrentTime()
{
	return QDateTime::currentDateTime().toString();
}

} // namespace

//------------------------------------------------------------------------------

TUserLog::TUserLog() : m_imp(new Imp())
{
}

//------------------------------------------------------------------------------

TUserLog::TUserLog(const TFilePath &fp) : m_imp(new Imp(fp))
{
}

//------------------------------------------------------------------------------

TUserLog::~TUserLog()
{
	delete m_imp;
}

//------------------------------------------------------------------------------

void TUserLog::warning(const QString &msg)
{
	QString fullMsg(myGetCurrentTime());
	fullMsg += " WRN:";
	fullMsg += "\n";
	fullMsg += msg;
	fullMsg += "\n";
	m_imp->write(fullMsg);
}

//------------------------------------------------------------------------------

void TUserLog::error(const QString &msg)
{
	QString fullMsg(myGetCurrentTime());
	fullMsg += " ERR:";
	fullMsg += "\n";
	fullMsg += msg;
	fullMsg += "\n";
	m_imp->write(fullMsg);
}

//------------------------------------------------------------------------------

void TUserLog::info(const QString &msg)
{
	QString fullMsg(myGetCurrentTime());
	fullMsg += " INF:";
	fullMsg += "\n";
	fullMsg += msg;
	fullMsg += "\n";
	m_imp->write(fullMsg);
}