int ledPins[] = {D3, D4, D5, D6, D7, D8, D9, D10};
int winLedPin = D10; 
int rgbRedPin = D11; 
int rgbBluePin = D13; 
int totalLEDs = 8;
int baseDelayTime = 100;
int delayTime = baseDelayTime; 
int fastDelayTime = 20;

int level = 1;
int maxLevel = 5;

volatile bool holdLEDState = false; 
volatile int lastLEDIndex = -1;
volatile bool isPurple = false;
volatile bool isGreen = false;

enum GameState {IDLE, RUNNING, WIN, LOSE};
GameState currentState = IDLE;

void setup() {
  for (int i = 0; i < totalLEDs; i++) { 
    pinMode(ledPins[i], OUTPUT);
    digitalWrite(ledPins[i], LOW);
  }

  pinMode(rgbRedPin, OUTPUT);
  pinMode(rgbBluePin, OUTPUT);

  pinMode(D2, INPUT_PULLUP);
  attachInterrupt(digitalPinToInterrupt(D2), holdLEDs, FALLING);
  
  setRGBColor(HIGH, HIGH);
}

void loop() { 
  switch (currentState) { 
    case IDLE:
      holdLEDState = false; 
      lastLEDIndex = -1; 
      isPurple = false; 
      isGreen = false; 
      setRGBColor(HIGH, HIGH);
      currentState = RUNNING;
      break;

    case RUNNING:
      for (int i = 0; i < totalLEDs; i++) { 
        if (i % 2 == 0) {
          isPurple = true;
          isGreen = false;
        } else {
          isGreen = true;
          isPurple = false;
        }

        if (holdLEDState) { 
          lastLEDIndex = i;
          currentState = (ledPins[i] == winLedPin) ? WIN : LOSE;
          break;
        }

        digitalWrite(ledPins[i], HIGH); 
        delay(delayTime);
        digitalWrite(ledPins[i], LOW);
      }
      break;

    case WIN:
      digitalWrite(ledPins[lastLEDIndex], HIGH); 
      setRGBColor(HIGH, LOW);
      delay(1000);

      if (level < maxLevel) { 
        level++;
        delayTime = max(delayTime - 20, fastDelayTime);
      }

      currentState = IDLE; 
      break;

    case LOSE:
      digitalWrite(ledPins[lastLEDIndex], HIGH); 
      setRGBColor(LOW, HIGH);
      delay(1000);
      currentState = IDLE; 
      break;
  }
}
//Naufal Arya Putra Ultawijaya
//1103223204
//Rabu Shift 1
//Kelompok 19
void setRGBColor(int red, int blue) { 
  digitalWrite(rgbRedPin, red);
  digitalWrite(rgbBluePin, blue);
}

void holdLEDs() { 
  if (isPurple) {
    setRGBColor(HIGH, LOW);
  } else if (isGreen) {
    setRGBColor(LOW, HIGH);
  }
  holdLEDState = true;
}