// Forum: https://forum.arduino.cc/t/ai-random-melody-composer-arduino-uno-r3/1220467
// This Wokwi project: https://wokwi.com/projects/388939478540441601

#define BUZZER_PIN 5 // Usa il numero del pin diretto per il buzzer

void setup() {
  pinMode(BUZZER_PIN, OUTPUT);
  Serial.begin(9600);
  randomSeed(analogRead(0));
}

void loop() {
  if (Serial.available() > 0) {
    String command = Serial.readStringUntil('\n');
    command.trim(); // Rimuovi eventuali spazi bianchi extra
    if (command.equalsIgnoreCase("componi")) {
      composeRandomMelody();
    }
  }
}

void composeRandomMelody() {
  for (int i = 0; i < 8; i++) {
    int randomNote = random(1, 8);
    playNote(getNoteFrequency(randomNote), 500);
    delay(100);
  }
}

void playNote(int frequency, int duration) {
  tone(BUZZER_PIN, frequency, duration);
  delay(duration + 50);
  noTone(BUZZER_PIN);
}

int getNoteFrequency(int noteIndex) {
  switch (noteIndex) {
    case 1:
      return 262; // Do
    case 2:
      return 294; // Re
    case 3:
      return 330; // Mi
    case 4:
      return 349; // Fa
    case 5:
      return 392; // Sol
    case 6:
      return 440; // La
    case 7:
      return 494; // Si
    default:
      return 0; // Nota non valida
  }
}