const int ButtonUp = 2;
const int ButtonDown = 4;
const int ButtonOnOff = 7;
const int led = 8;

int buttonState = 0;
int counterOnOff = 0;

int buttonCounter = 0;
bool ledState = false;
unsigned long previousMillis = 0;
unsigned long interval = 500; // Interval default

void setup() {
  Serial.begin(9600);
  pinMode(ButtonUp, INPUT);
  pinMode(ButtonDown, INPUT);
  pinMode(ButtonOnOff, INPUT);
  pinMode(led, OUTPUT);
}

void loop() {
  unsigned long currentMillis = millis();

  // baca status tombol:
  buttonState = digitalRead(ButtonOnOff);

  // jika tombol ditekan
  if (buttonState == HIGH) {
    // tambahkan satu ke counter
    counterOnOff++;
    Serial.print("Counter On Off: ");
    Serial.println(counterOnOff);
    // tunggu sebentar untuk menghindari bouncing
    delay(250);
  }

  // jika counter genap, hentikan seluruh operasi
  if (counterOnOff % 2 == 0) {
    return; // keluar dari loop
  }

  else {
    // jika counter ganjil, lanjutkan dengan mengontrol LED
  
    // Membaca tombol dan menambahkan counter jika ditekan
   if (digitalRead(ButtonUp) == HIGH) {
      buttonCounter++;
      Serial.print("Button pushed. Total button pushes: ");
      Serial.println(buttonCounter);
      delay(250);
      // Mengatur delay baru untuk LED
      interval = buttonCounter * 500;
      previousMillis = currentMillis; // Me-reset waktu sebelumnya
    } 

    // Counter Down
    if (digitalRead(ButtonDown) == HIGH) {
      buttonCounter--;
      Serial.print("Button pushed. Total button pushes: ");
      Serial.println(buttonCounter);
      delay(250);
      // Mengatur delay baru untuk LED
      interval = buttonCounter * 500;
      previousMillis = currentMillis; // Me-reset waktu sebelumnya
    }

    // Mengontrol LED berdasarkan interval waktu
    if (currentMillis - previousMillis >= interval) {
      // Toggle status LED
      ledState = !ledState;
      digitalWrite(led, ledState);
      previousMillis = currentMillis; // Me-reset waktu sebelumnya
    }

  }
  
}