const int clkPin = 2;    // Pin connected to CLK on the rotary encoder
const int dtPin = 3;     // Pin connected to DT on the rotary encoder
const int swPin = 4;     // Pin connected to SW on the rotary encoder
const int redLEDPin = 8; // Pin connected to Red LED
const int greenLEDPin = 9; // Pin connected to Green LED

int lastStateCLK;
int currentStateCLK;
int lastButtonState;

void setup() {
  // Initialize LED pins as output
  pinMode(redLEDPin, OUTPUT);
  pinMode(greenLEDPin, OUTPUT);

  // Initialize rotary encoder pins
  pinMode(clkPin, INPUT);
  pinMode(dtPin, INPUT);
  pinMode(swPin, INPUT_PULLUP);

  // Read the initial state of the CLK pin
  lastStateCLK = digitalRead(clkPin);
  lastButtonState = digitalRead(swPin);

  // Turn off both LEDs initially
  digitalWrite(redLEDPin, LOW);
  digitalWrite(greenLEDPin, LOW);
}

void loop() {
  // Read the current state of the CLK pin
  currentStateCLK = digitalRead(clkPin);

  // If the state has changed, then the encoder has been rotated
  if (currentStateCLK != lastStateCLK) {
    // Read the DT pin
    int dtState = digitalRead(dtPin);

    // Determine the direction of rotation
    if (dtState != currentStateCLK) {
      // Turning clockwise
      digitalWrite(redLEDPin, HIGH);
      digitalWrite(greenLEDPin, LOW);
    } else {
      // Turning counterclockwise
      digitalWrite(redLEDPin, LOW);
      digitalWrite(greenLEDPin, HIGH);
    }
  }

  // Read the button state
  int currentButtonState = digitalRead(swPin);

  // If the button is pressed, turn off both LEDs
  if (currentButtonState == LOW && lastButtonState == HIGH) {
    delay(50); // Debounce delay
    digitalWrite(redLEDPin, LOW);
    digitalWrite(greenLEDPin, LOW);
  }

  // Update the last states
  lastStateCLK = currentStateCLK;
  lastButtonState = currentButtonState;
}