Log.h

/*
 * Copyright (c) 2024 Quantag IT Solutions GmbH
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

#pragma once

#include <stdarg.h>
#include <string>

typedef unsigned char byte;

/**
 * Logger output mask
 */
#define LO_CONSOLE		( 1 )
#define LO_FILE			( 2 )
#define LO_DEBUGGER		( 8 )


/**
 * Macros for global logger
 */
#define LOG_INIT			Logger::logger.init

#define LOG(...)			Logger::logger.log(__FUNCTION__,__VA_ARGS__)
#define LOG_DATA(...)	Logger::logger.data(__FUNCTION__,__VA_ARGS__)

#define LOGE(...) LOG(Log::eErr, __VA_ARGS__)
#define LOGW(...) LOG(Log::eInfo, __VA_ARGS__)
#define LOGI(...) LOG(Log::eInfo, __VA_ARGS__)
#define LOGS(...) LOG(Log::eStream, __VA_ARGS__)
#define LOGSD(...) LOG(Log::eStreamDbg, __VA_ARGS__)
#define LOGD(...) LOG(Log::eStream, __VA_ARGS__)

namespace Log {
	enum {
		eErr = 1,
		eInfo,
		eStream,
		eStreamDbg
	};
};

/**
 * class Logger - to log in file
 */
class Logger
{
public:
// Global logger
	static Logger	logger;

// Constructor/Destructor
	Logger(); 
	virtual ~Logger();

// Implementation
	void	init(int level, const std::string& filename);
	void	log(const std::string &funcName, int level, const char* format, ...);
	void	data(const std::string &funcName, int level,  const char *title, const byte* buf, unsigned int len);

	void	setLogLevel(int level)	{ _level = level; }
	void	setMode(int mode)		{ _mode = mode; }

	const std::string& getBaseFileName() const { return baseFileName; }
	const std::string& getFileName() const { return _filepath; }
	void setFileName(const std::string& fileName);

protected:
	void	logArgs(int level,  const std::string &funcName, const char* format, va_list args);
	std::string buildLogLine(const std::string& funcName, const std::string& buf);
	std::string getCurrentTimestamp();

private:
// Members
	int			_mode;
	int			_level;

	std::string	_filepath; // real full file name
	std::string baseFileName;  // core of file name
};