#include <chrono>
#include <cstdio>
#include <ctime>
#include <functional>
#include <iostream>
#include <ncurses.h>
#include <unistd.h>
#include <thread>

// dynamic, let's for loop hello
/* let's add a timer
   function "subscribes" to a function that omits a signal whenever a second has pased
*/
// void printhellos(int inputnumber) {
//   for (int i = 0; i < inputnumber; i++) {
//     mvprintw(i, 10, "hello %d", i);
//     refresh();
//   }
// }

/*
  todo
  figure out namespaces, using, and auto
  formalize timer struct
  read about std function and std bind
  try to do with objects / classes instead
  centralize into event sender and subscriber
*/

struct mysecondsdisplay {
  int currenttime = 10;
  void myupdatedisplay() {
    currenttime -= 1;
    printf("time: %d\n", currenttime);
    if (currenttime < 1) {
      currenttime = 10;
    }
  }
};

//calls callbackfunc on specified interval based on accumulated deltatime
class timer {

public:
  std::function<void()> callbackfunc;

  timer(size_t interval_input): interval(interval_input){}
  
  void updatetime(double DeltaTime) {
    accumulator += DeltaTime;
    printf("accumulated: %f\n", accumulator);
    if (accumulator >= interval) {
      printf("interval\n");
      accumulator = 0;
      callbackfunc();
    }
  }

private:
  double accumulator = 0;
  size_t interval = 1; // only display every 1 seconds
};

int main() {
  // initscr();
  // nodelay(stdscr,FALSE);
  // move(11, 26);
  // printw("Hello curses");
  // refresh();
  printf("verification\n");
  auto starttime = std::chrono::system_clock::now();
  timer clocktimer(1);
  mysecondsdisplay secdisp;
  clocktimer.callbackfunc = [&]() { secdisp.myupdatedisplay(); };
  while (true) {
    auto currenttime = std::chrono::system_clock::now();
    std::chrono::duration<double> myDeltaTime = currenttime - starttime;
    double DoubleDeltaTime = myDeltaTime.count();
    clocktimer.updatetime(DoubleDeltaTime);
    printf("deltatime:%f\n", DoubleDeltaTime);
    starttime = currenttime;
    std::this_thread::sleep_for(std::chrono::milliseconds(250));
  }

  // getch();
  // endwin();

  return 0;
}