#define BUTTON_PIN 12
#define PIR_PIN    13

unsigned long lastActionTime = 0;
int currentSong = 1;
bool buttonPressed = false;
bool pirTriggered = false;

void setup() {
  Serial.begin(115200);
  pinMode(BUTTON_PIN, INPUT_PULLUP);
  pinMode(PIR_PIN, INPUT);
  playSong(1);
}

void loop() {
  unsigned long now = millis();
  unsigned long elapsed = now - lastActionTime;

  // בדיקת חיישן PIR
  int motion = digitalRead(PIR_PIN);
  if (motion == HIGH && !pirTriggered) {
    pirTriggered = true;
    Serial.println("🟢 Playing 'Happy' - motion detected");
    playSong(4);
    return; // מפסיק את שאר הבדיקות
  }

  // לחיצה על כפתור
  if (digitalRead(BUTTON_PIN) == LOW && !buttonPressed && !pirTriggered) {
    buttonPressed = true;
    delay(200); // debounce

    if (currentSong == 1) {
      playSong(2);
    }
    else if (currentSong == 2) {
      playSong(3);
    }
  }

  if (digitalRead(BUTTON_PIN) == HIGH) {
    buttonPressed = false;
  }

  // מעבר אוטומטי לפי זמן (רק אם לא הופעל PIR)
  if (!pirTriggered) {
    if (currentSong == 1 && elapsed >= 10UL * 60 * 1000) {
      Serial.println("10 minutes have passed – moving to song 2");
      playSong(2);
    }

    if (currentSong == 2 && elapsed >= 20UL * 60 * 1000) {
      Serial.println("10 minutes have passed – moving to song 3");
      playSong(3);
    }
  }
}

void playSong(int songNumber) {
  currentSong = songNumber;
  lastActionTime = millis();

  switch (songNumber) {
    case 1:
      Serial.println("🎵 Play rustling leaves sound");
      break;
    case 2:
      Serial.println("🎵Play bird chirping sound");
      break;
    case 3:
      Serial.println("🎵Play beeping truck reverse sound");
      break;
    case 4:
      Serial.println("🎵 Playing 'Happy' – motion detected");
      break;
    default:
      Serial.println("⚠️ Playing");
  }
}