//MyClasses/Stopwatch.hpp
//Matthew Ellison
// Created: 10-30-2018
//Modified: 12-10-2018
//This file creates a class that can be used on many programs to time them
/*
	Copyright (C) 2018  Matthew Ellison

	This program is free software: you can redistribute it and/or modify
	it under the terms of the GNU Lesser General Public License as published by
	the Free Software Foundation, either version 3 of the License, or
	(at your option) any later version.

	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 Lesser General Public License for more details.

	You should have received a copy of the GNU Lesser General Public License
	along with this program.  If not, see <https://www.gnu.org/licenses/>.
*/

#ifndef STOPWATCH_HPP
#define STOPWATCH_HPP

#include <chrono>

namespace mee{
class Stopwatch{
private:
	std::chrono::high_resolution_clock::time_point startTime;
	std::chrono::high_resolution_clock::time_point endTime;
	bool hasStarted;
	bool hasEnded;
public:
	Stopwatch(){
		hasStarted = hasEnded = false;
	}
	~Stopwatch(){

	}
	void start(){
		startTime = std::chrono::high_resolution_clock::now();
		hasStarted = true;
	}
	void stop(){
		endTime = std::chrono::high_resolution_clock::now();
		hasEnded = true;
	}
	double getTime(){
		if(hasStarted && hasEnded){
			return (endTime - startTime).count();
		}
		else{
			return 0;
		}
	}
	double getSeconds(){
		if(hasStarted && hasEnded){
			std::chrono::duration<double> dur = endTime - startTime;
			return dur.count();
		}
		else{
			return 0;
		}
	}
	double getMilli(){
		if(hasStarted && hasEnded){
			std::chrono::duration<double, std::milli> dur = endTime - startTime;
			return dur.count();
		}
		else{
			return 0;
		}
	}
	double getMicro(){
		if(hasStarted && hasEnded){
			std::chrono::duration<double, std::micro> dur = endTime - startTime;
			return dur.count();
		}
		else{
			return 0;
		}
	}
	double getNano(){
		if(hasStarted && hasEnded){
			std::chrono::duration<double, std::nano> dur = endTime - startTime;
			return dur.count();
		}
		else{
			return 0;
		}
	}
	void reset(){
		hasStarted = hasEnded = false;
		endTime = startTime = std::chrono::high_resolution_clock::time_point();
	}
};
}

#endif //end STOPWATCH_HPP