/**
* Cam
* Copyright (C) 2021 Carl Klemm
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 3 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA  02110-1301, USA.
*/

#pragma once
#include <iostream>
#include <string>

class Log 
{
public:
	
	enum Level
	{
		DEBUG,
		INFO,
		WARN,
		ERROR
	};

private:
	bool opened = false;
	Level msglevel = DEBUG;

	inline std::string getLabel(Level level) 
	{
		std::string label;
		switch(level) 
		{
			case DEBUG: 
				label = "DEBUG"; 
				break;
			case INFO:  
				label = "INFO "; 
				break;
			case WARN:  
				label = "WARN "; 
				break;
			case ERROR: 
				label = "ERROR"; 
				break;
		}
		return label;
	}
	
public:


	inline static bool headers = false;
	inline static Level level = WARN;

	Log() {}
	Log(Level type)
	{
		msglevel = type;
		if(headers) 
		{
			operator << ("["+getLabel(type)+"]");
		}
	}
	
	~Log() 
	{
		if(opened) 
		{
			std::cout<<'\n';
		}
		opened = false;
	}
	
	template<class T> Log &operator<<(const T &msg) 
	{
		if(msglevel >= level) 
		{
			std::cout<<msg;
			opened = true;
		}
		return *this;
	}
};