#ifndef TIMER_H
#define TIMER_H

#include <atomic>
#include <thread>
#include <chrono>
#include <iostream>
#include <list>

using namespace std;

class Timer {
private:
    atomic_bool done_ {};
    thread worker_{};
    //time interval
    chrono::milliseconds time;
    void run_();
    Fn** fn; // function called
    Args** args; // Argument of this function
public:
   template <class Fn, class... Args>
    Timer(chrono::milliseconds time, Fn&& fn, Args&&... args);
    ~Timer();
};

#endif // TIMER_H

#include "timer.h"

template <class Fn, class... Args>
Timer::Timer(chrono::milliseconds time,Fn&& fn, Args&&... args){
    this->time = time;
    this->fn = fn;
    this->args = args;
    worker_ = thread(&Timer::run_,this);
}
// Thread method
void Timer::run_(){
    while(!this->done_.load()){
        //call function
        this_thread::sleep_for(time);
    }
}

Timer::~Timer(){
    done_.store(true);
    if(worker_.joinable())
        worker_.join();
    else
       cout << "thread termined" << endl;

}