#define LED_RED        25
#define LED_GREEN_LOW  26
#define LED_BI_YELLOW  27
#define LED_BI_GREEN   14
#define LED_GREEN      32
#define BUTTON         33

int state = 1;
const int maxStates = 8;

// --- Button ---
bool buttonState = HIGH;
bool lastReading = HIGH;
unsigned long lastDebounceTime = 0;
const unsigned long debounceDelay = 50;

// --- 1s Blink ---
unsigned long lastBlink1s = 0;
bool blink1s = false;

// --- Gelb 1s an / 0.5s aus ---
unsigned long lastCustomBlink = 0;
bool yellowCustomState = false;

void setup() {
  pinMode(LED_RED, OUTPUT);
  pinMode(LED_GREEN, OUTPUT);
  pinMode(LED_GREEN_LOW, OUTPUT);
  pinMode(LED_BI_YELLOW, OUTPUT);
  pinMode(LED_BI_GREEN, OUTPUT);
  pinMode(BUTTON, INPUT_PULLUP);

  Serial.begin(115200);
  Serial.println("Start...");
  Serial.print("Case ");
  Serial.println(state);
}

void loop() {

  unsigned long now = millis();

  // -------- ENT­PRELLUNG --------
  bool reading = digitalRead(BUTTON);

  if (reading != lastReading) {
    lastDebounceTime = now;
  }

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

      // Flanke HIGH -> LOW
      if (buttonState == LOW) {
        state++;
        if (state > maxStates) state = 1;

        Serial.print("Case ");
        Serial.println(state);
      }
    }
  }

  lastReading = reading;

  // -------- 1s Blink --------
  if (now - lastBlink1s >= 1000) {
    blink1s = !blink1s;
    lastBlink1s = now;
  }

  // -------- Gelb 1s / 0.5s --------
  if (yellowCustomState) {
    if (now - lastCustomBlink >= 1000) {
      yellowCustomState = false;
      lastCustomBlink = now;
    }
  } else {
    if (now - lastCustomBlink >= 500) {
      yellowCustomState = true;
      lastCustomBlink = now;
    }
  }

  // -------- Alles aus --------
  digitalWrite(LED_RED, LOW);
  digitalWrite(LED_GREEN_LOW, LOW);
  digitalWrite(LED_BI_YELLOW, LOW);
  digitalWrite(LED_BI_GREEN, LOW);
  digitalWrite(LED_GREEN, LOW);

  // -------- Zustände --------
  switch (state) {

    case 1:
      digitalWrite(LED_RED, HIGH);
      break;

    case 2:
      digitalWrite(LED_GREEN, HIGH);
      break;

    case 3:
      digitalWrite(LED_RED, HIGH);
      digitalWrite(LED_BI_GREEN, HIGH);
      break;

    case 4:
      digitalWrite(LED_RED, HIGH);
      digitalWrite(LED_BI_YELLOW, blink1s);
      digitalWrite(LED_GREEN_LOW, !blink1s);
      break;

    case 5:
      digitalWrite(LED_RED, HIGH);
      digitalWrite(LED_BI_YELLOW, blink1s);
      digitalWrite(LED_GREEN_LOW, blink1s);
      break;

    case 6:
      digitalWrite(LED_RED, HIGH);
      digitalWrite(LED_BI_YELLOW, HIGH);
      digitalWrite(LED_GREEN_LOW, HIGH);
      break;

    case 7:
      digitalWrite(LED_RED, HIGH);
      digitalWrite(LED_BI_YELLOW, yellowCustomState);
      break;

    case 8:
      digitalWrite(LED_RED, HIGH);
      digitalWrite(LED_BI_YELLOW, HIGH);
      break;
  }
}