#include <iostream>
#include <iterator>
#include <fstream>
#include <vector>

#include <SDL2/SDL.h>

#include "BuzzerSDL.hpp"
#include "CountdownTimerSDL.hpp"
#include "DisplaySDL.hpp"
#include "KeypadSDL.hpp"
#include "Interpreter.hpp"

int main(int argc, char* argv[]) {
  if (SDL_Init(SDL_INIT_EVERYTHING) < 0) {
    std::cerr << "Couldn't initialize SDL: " << SDL_GetError() << '\n';
    return 1;
  }

  BuzzerSDL buzzer(440);
  int N = 4;
  DisplaySDL display(128*N, 64*N);
  KeypadSDL keypad;
  CountdownTimerSDL delayTimer(60);
  CountdownTimerSDL soundTimer(60);
  CountdownTimerSDL displayTimer(60);
  chocochip8::Interpreter chip8(display, buzzer, keypad, delayTimer, soundTimer);

  auto rom = std::vector<char>();
  auto romfile = std::ifstream(argv[1] != NULL ? argv[1] : "/dev/stdin", std::ios_base::in | std::ios_base::binary);
  std::copy(
    std::istreambuf_iterator<char>(romfile),
    std::istreambuf_iterator<char>(),
    std::back_insert_iterator(rom)
  );
  chip8.loadProgram(rom.data(), rom.size());

  SDL_Event event;
  bool done = false;
  while(!done) {
    while(SDL_PollEvent(&event)) {
      if(event.type == SDL_QUIT) {
        done = true;
      } else {
        keypad.processEvent(event);
      }
    }
    chip8.tick();
    if(displayTimer.get() == 0) {
      display.updateWindow();
      displayTimer.set(1);
    }
  }
  
  buzzer.off();
  SDL_Quit();
  return 0;
}