int buttonPin = 12;   // Push button connected to D2
int lastButtonState = HIGH;
int currentButtonState;
int pressCount = 0;

int R = 9;
int G = 11;
int B = 10;

int red = 5;
int green = 4;
int yellow = 3;

int passive = 2;   // passive buzzer
int activeb = 7;   // active buzzer

void setup() {
  Serial.begin(9600);

  pinMode(buttonPin, INPUT_PULLUP); // Push button

  pinMode(R, OUTPUT);
  pinMode(G, OUTPUT);
  pinMode(B, OUTPUT);

  pinMode(red, OUTPUT);
  pinMode(green, OUTPUT);
  pinMode(yellow, OUTPUT);

  pinMode(passive, OUTPUT);
  pinMode(activeb, OUTPUT);
}

void loop() {
  currentButtonState = digitalRead(buttonPin);

  // Detect button press
  if (lastButtonState == HIGH && currentButtonState == LOW) {
    pressCount++;
    if (pressCount > 8) pressCount = 1;  // cycle through 8 modes
    Serial.print("Button pressed, mode: ");
    Serial.println(pressCount);
    runMode(pressCount);
    delay(200); // debounce
  }

  lastButtonState = currentButtonState;
}

void runMode(int mode) {
  // Reset LEDs
  analogWrite(R, 0);
  analogWrite(G, 0);
  analogWrite(B, 0);
  digitalWrite(red, LOW);
  digitalWrite(green, LOW);
  digitalWrite(yellow, LOW);
  noTone(passive);
  digitalWrite(activeb, LOW);

  switch (mode) {
    case 1: // Red RGB + tones
      analogWrite(R, 255);
      analogWrite(G, 0);
      analogWrite(B, 0);
      tone(passive, 660, 200); delay(200);
      tone(passive, 770, 200); delay(200);
      tone(passive, 880, 200); delay(200);
      break;

    case 2: // Red RGB + higher tones
      analogWrite(R, 255);
      tone(passive, 990, 200); delay(200);
      tone(passive, 1100, 200); delay(200);
      tone(passive, 1200, 200); delay(200);
      break;

    case 3: // Blue RGB + tones
      analogWrite(B, 255);
      tone(passive, 1300, 200); delay(200);
      tone(passive, 1400, 200); delay(200);
      tone(passive, 1500, 200); delay(200);
      break;

    case 4: // Green RGB + active buzzer beeps
      analogWrite(G, 255);
      for (int i = 0; i < 3; i++) {
        digitalWrite(activeb, HIGH); delay(300);
        digitalWrite(activeb, LOW); delay(100);
      }
      break;

    case 5: // Magenta RGB + active buzzer beeps
      analogWrite(R, 255);
      analogWrite(B, 255);
      for (int i = 0; i < 3; i++) {
        digitalWrite(activeb, HIGH); delay(300);
        digitalWrite(activeb, LOW); delay(100);
      }
      break;

    case 6: // Another magenta effect + active buzzer
      analogWrite(R, 255);
      analogWrite(B, 255);
      for (int i = 0; i < 3; i++) {
        digitalWrite(activeb, HIGH); delay(300);
        digitalWrite(activeb, LOW); delay(100);
      }
      break;

    case 7: // Red LED + active buzzer blink
      for (int i = 0; i < 3; i++) {
        digitalWrite(red, HIGH);
        digitalWrite(activeb, HIGH); delay(300);
        digitalWrite(activeb, LOW);
        digitalWrite(red, LOW); delay(100);
      }
      break;

    case 8: // Rainbow cycle with 3 LEDs
      analogWrite(R, 255); analogWrite(G, 255); analogWrite(B, 0);
      digitalWrite(red, HIGH); delay(100);

      analogWrite(R, 0); analogWrite(G, 255); analogWrite(B, 255);
      digitalWrite(green, HIGH); delay(100);

      analogWrite(R, 255); analogWrite(G, 255); analogWrite(B, 255);
      digitalWrite(yellow, HIGH); delay(100);
      break;
  }
}