int led1 = 8;
bool ledState = 0;
const int buttonPin = 2;
const unsigned long debounceDelay = 50;
const unsigned long doubleClickTime = 1000;

unsigned long lastDebounceTime = 0;
unsigned long lastClickTime = 0;
bool buttonState = HIGH;
bool lastButtonState = HIGH;
byte clickCount = 0;

void setup() {
  pinMode(buttonPin, INPUT_PULLUP);
  pinMode(led1,OUTPUT);
  digitalWrite(led1,ledState);
  Serial.begin(9600);
}

void loop() {
  bool reading = digitalRead(buttonPin);

  // Non-blocking debounce
  if (reading != lastButtonState) {
    lastDebounceTime = millis();
  }

  if ((millis() - lastDebounceTime) > debounceDelay) {
    if (reading != buttonState) {
      buttonState = reading;

      if (buttonState == LOW) { // Button pressed
        unsigned long currentTime = millis();
        if (currentTime - lastClickTime < doubleClickTime) {
          clickCount++;
          if (clickCount == 2) {
            Serial.println("Double Click!");
            clickCount = 0;
            ledState = !ledState;
            digitalWrite(led1,ledState);
          }
        } else {
          clickCount = 1;
          Serial.println("Single Click (potential)");
        }
        lastClickTime = currentTime;
      }
    }
  }
  lastButtonState = reading;

  // Handle single click after timeout
  if (clickCount == 1 && (millis() - lastClickTime > doubleClickTime)) {
    Serial.println("Single Click (confirmed)");
    // Perform your single click action here
    clickCount = 0;
  }
}