const int ledPin = 4; 
const int buttonPin = 8; 
int pressCount = 0;
bool isBlinking = false;

void setup() {
  pinMode(ledPin, OUTPUT);
  Serial.begin(9600);
  Serial.println("Press, Hold and Release Button (1 click)");
  pinMode(buttonPin, INPUT_PULLUP); 
}

void loop() {
  int buttonState = digitalRead(buttonPin);
  static bool buttonPressed = false;
  static unsigned long lastDebounceTime = 0;
  unsigned long debounceDelay = 50;

  if (buttonState == LOW && !buttonPressed && (millis() - lastDebounceTime > debounceDelay)) {
    buttonPressed = true;
    lastDebounceTime = millis();
    pressCount++;
    Serial.print("Button is pressed, press count: ");
    Serial.println(pressCount);

    if (pressCount == 1) {
      isBlinking = true;
      Serial.println("LED BLINKING");
    } else if (pressCount == 4) {
      isBlinking = false;
      digitalWrite(ledPin, LOW); 
      Serial.println("LED OFF");
      pressCount = 0; 
    }
  }

  if (buttonState == HIGH && buttonPressed) {
    buttonPressed = false;
    Serial.println("Button is released");
  }

  if (isBlinking) {
    digitalWrite(ledPin, HIGH);
    delay(500); 
    digitalWrite(ledPin, LOW);
    delay(500); 
  } else {
    delay(100); 
  }
}