byte button = 2;
int led = 3;
int x;
unsigned long currentTime = 0;
unsigned long lastTime = 0;
unsigned long getLastTime() {
  return currentTime = millis() / 1000.0 - lastTime;
}

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(button, INPUT);
  pinMode(led, OUTPUT);
}

void loop() {
  //IF BUTTON IS PRESSED X ADDS 1 VALUE
  x+=digitalRead(button);


  Serial.println(x);

  switch (x) {
    case 0:
      digitalWrite(led, LOW);
      break;

    case 1:
      digitalWrite(led, HIGH);
      break;

    case 2:

      if (getLastTime() >= 0 && getLastTime() <=0.5)
      {
        digitalWrite(led, HIGH);
      }
      else if (getLastTime() >= 0.5 && getLastTime()<=1 )
      {
        digitalWrite(led, LOW);
      }
      else if (getLastTime() > 0.5)
      {
        repeat();
      }

      break;
    case 3:

      if (getLastTime() >= 0 && getLastTime() <=1)
      {
        digitalWrite(led, HIGH);
      }
      else if (getLastTime() >= 1 && getLastTime()<=2 )
      {
        digitalWrite(led, LOW);
      }
      else if (getLastTime() > 3)
      {
        repeat();
      }

      break;
    default:
      x = 0;
      break;
  }
}

void repeat() {
  lastTime = millis() / 1000.0;
}