volatile int count = 1; // Must be volatile to use with interrupts
const int button = 2;   // Use pin 2 or 3 for interrupt
const int led[3] = {12, 4, 3};
boolean oldSwitchState = LOW;
boolean newSwitchState = LOW;

void setup() {
  Serial.begin(9600);
  pinMode(button, INPUT_PULLUP); // Button with pull-up resistor

  // Set LED pins to OUTPUT
  for (int i = 0; i < 3; i++) {
    pinMode(led[i], OUTPUT);
  }

  // Attach interrupt to button pin
  attachInterrupt(digitalPinToInterrupt(button), counter, FALLING);
}

void loop() {
  switch (count) {
    case 1:
      clockwise();
      break;
    case 2:
      anticlockwise();
      break;
    case 3:
      blink();
      break;
    case 4:
      // Run all sequences in order
      clockwise();
      anticlockwise();
      blink();
      break;
    default:
      break;
  }
}

void clockwise() {
  Serial.println("Clockwise: " + String(count));
  for (int i = 0; i < 3; i++) {
    digitalWrite(led[i], HIGH);
    delay(500);
    digitalWrite(led[i], LOW);
    delay(500);
  }
}

void anticlockwise() {
  Serial.println("Anticlockwise: " + String(count));
  for (int i = 2; i >= 0; i--) {
    digitalWrite(led[i], HIGH);
    delay(500);
    digitalWrite(led[i], LOW);
    delay(500);
  }
}

void blink() {
  Serial.println("Blink: " + String(count));
  for (int j = 0; j < 3; j++) {
    for (int i = 0; i < 3; i++) {
      digitalWrite(led[i], HIGH);
    }
    delay(500);
    for (int i = 2; i >= 0; i--) {
      digitalWrite(led[i], LOW);
    }
    delay(500);
  }
}

// Interrupt Service Routine (ISR)
void counter() {
  // Use the ISR to update count
  count++;
  if (count > 4) {
    count = 1;
  }
  delay(50);  // Small delay to avoid bouncing issues
}