const int ledPins[] = {33, 25, 26, 27, 14, 12, 13};
const int numLEDs = sizeof(ledPins) / sizeof(ledPins[0]);

const int buttonPin = 32;

unsigned long ledInterval = 8571/2;  // 60s / 7 LEDs
unsigned long blinkInterval = 100; // Blink every 100 ms

int currentLED = 0;
bool blinking = false;
bool timerRunning = false;

unsigned long lastChangeTime = 0;
unsigned long lastBlinkTime = 0;
bool ledBlinkState = false;

void setup() {
  Serial.begin(115200);
  for (int i = 0; i < numLEDs; i++) {
    pinMode(ledPins[i], OUTPUT);
    digitalWrite(ledPins[i], LOW);
  }
  pinMode(buttonPin, INPUT);
}

void loop() {
  // Check button press to start/restart
  if (digitalRead(buttonPin) == HIGH) {
    startTimer();
  }

  // Turn off one LED every ledInterval
  if (timerRunning && millis() - lastChangeTime == ledInterval) {
    if (currentLED < numLEDs) {
      digitalWrite(ledPins[currentLED], LOW);  // Turn off current LED
      currentLED++;
      lastChangeTime = millis();
    }

    if (currentLED >= numLEDs) {
      timerRunning = false;
      blinking = true;
      lastBlinkTime = millis();
    }
  }

  // Handle blinking after all LEDs are off
  if (blinking && millis() - lastBlinkTime >= blinkInterval) {
    ledBlinkState = !ledBlinkState;
    for (int i = 0; i < numLEDs; i++) {
      digitalWrite(ledPins[i], ledBlinkState ? HIGH : LOW);
    }
    lastBlinkTime = millis();
  }
}

void startTimer() {
  blinking = false;
  timerRunning = true;
  currentLED = 0;
  lastChangeTime = millis();

  // Turn all LEDs ON
  for (int i = 0; i < numLEDs; i++) {
    digitalWrite(ledPins[i], HIGH);
  }
}