const unsigned long tickPeriod = 400;
bool prevState = HIGH;
bool wejscie = HIGH;
bool beenPressed = LOW;
bool beenReleased = LOW;
uint8_t brightness = 50;
bool brightnessDirectionUp = true;
uint8_t brightnessLo = 0;
uint8_t brightnessMid = 50;
uint8_t brightnessHi = 100;

volatile unsigned long lastDebounceTime = 0;
volatile unsigned long lastPressedTime = 0;
volatile unsigned long lastRepeatTime = 0;
void setup() {
  // put your setup code here, to run once:
  pinMode(2, INPUT_PULLUP);
  pinMode(LED_BUILTIN, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  volatile unsigned long currentTime = millis();  // Get the current time
  //volatile unsigned long timeDiff = (currentTime - lastDebounceTime);
  

  wejscie = digitalRead(DDC2);
  if ((wejscie == LOW) and (prevState == HIGH)) {
    lastPressedTime = currentTime;
    beenPressed = HIGH;
    Serial.println("Pressed");
  } else {
    beenPressed = LOW;
  }
  prevState = wejscie;

  volatile unsigned long timeDiffRepeatDelay = (currentTime - lastPressedTime);
  volatile unsigned long timeDiffRepeatPeriod = (currentTime - lastRepeatTime);

  // if ((beenPressed == HIGH) or ((wejscie == LOW) and (timeDiffRepeatDelay > 1200) and (timeDiffRepeatPeriod > tickPeriod))) {
  //   lastRepeatTime = currentTime;
  //   Serial.println("TickRepeat");
  //   digitalWrite(LED_BUILTIN, HIGH);
  //   delay(100);
  //   digitalWrite(LED_BUILTIN, LOW);
  // }

if ((brightness == brightnessLo) or (brightness == brightnessMid) or (brightness != brightnessHi)) {
  if ((wejscie == LOW) and (timeDiffRepeatDelay > 1200) and (timeDiffRepeatPeriod > tickPeriod)) {
    Serial.println("Dent");
  }
}

  if ((beenPressed == HIGH) or ((wejscie == LOW) and (timeDiffRepeatDelay > 1200) and (timeDiffRepeatPeriod > tickPeriod))) {
    lastRepeatTime = currentTime;
    if (brightnessDirectionUp == true) {
      brightness += 8;
    } else {
      brightness -= 8;
    }
    Serial.println(brightness);
    Serial.println("TickRepeat");
    digitalWrite(LED_BUILTIN, HIGH);
    delay(100);
    digitalWrite(LED_BUILTIN, LOW);
  } else if ((wejscie == HIGH) and (brightness == brightnessLo) and (brightness == brightnessHi)) {
    brightnessDirectionUp = not brightnessDirectionUp;
    Serial.print("Direction Change to:");
    Serial.println(brightnessDirectionUp);
  }
}