/* ---------------------------------------------------------------------------
** This software is in the public domain, furnished "as is", without technical
** support, and with no warranty, express or implied, as to its usefulness for
** any purpose.
**
** logger.h
** 
** -------------------------------------------------------------------------*/

#ifndef LOGGER_H
#define LOGGER_H

#include <unistd.h>

#include "log4cpp/Category.hh"
#include "log4cpp/FileAppender.hh"
#include "log4cpp/PatternLayout.hh"

enum LoggerVerbose
{
	LV_ERROR,
	LV_WARN,
	LV_NOTICE,
	LV_INFO,
	LV_DEBUG
};

#define LOG(__level)  log4cpp::Category::getRoot() << log4cpp::Priority::__level << __FILE__ << ":" << __LINE__ << "\t" 
#define LOGP(__level, __format, arg...) log4cpp::Category::getRoot().log(log4cpp::Priority::__level, "%s:%d\t" __format, __FILE__, __LINE__, ##arg);

#define LOG_DEBUG    LOG(DEBUG) // Debug message do not care in any production environment
#define LOG_INFO     LOG(INFO) // Not significant event but useful for deal with online problem
#define LOG_NOTICE   LOG(NOTICE) // Important event
#define LOG_WARN     LOG(WARN) // Important event or input which will lead to errors
#define LOG_ERROR    LOG(ERROR) // Error message means program running in an abnormal (not expected) way

inline void initLogger(LoggerVerbose verbose)
{
	// initialize log4cpp
	log4cpp::Category &log = log4cpp::Category::getRoot();
	log4cpp::Appender *app = new log4cpp::FileAppender("root", fileno(stdout));
	if (app)
	{
		log4cpp::PatternLayout *plt = new log4cpp::PatternLayout();
		if (plt)
		{
			plt->setConversionPattern("%d [%-6p] - %m%n");
			app->setLayout(plt);
		}
		log.addAppender(app);
	}
	switch (verbose)
	{
		case LV_DEBUG: log.setPriority(log4cpp::Priority::DEBUG); break;
		case LV_INFO: log.setPriority(log4cpp::Priority::INFO); break;
		case LV_NOTICE: log.setPriority(log4cpp::Priority::NOTICE); break;
		case LV_WARN: log.setPriority(log4cpp::Priority::WARN); break;
		case LV_ERROR: log.setPriority(log4cpp::Priority::ERROR); break;
		default: log.setPriority(log4cpp::Priority::NOTICE); break;
		
	}
	LOG_INFO << "level:" << log4cpp::Priority::getPriorityName(log.getPriority()); 
}
	
#endif