#define LIGHT_SENSOR_PIN 36 
#define buzz 2

struct Tom {
  int frequencia;
  int duracao;
};

Tom tomDark[] = {
  {100, 100}, {0, 50}, {150, 100}, {0, 50}, {100, 100}, {0, 200}
};

Tom tomDim[] = {
  {200, 100}, {0, 50}, {250, 100}, {0, 50}, {200, 100}, {0, 50}, {150, 100}, {0, 200}
};

Tom tomLight[] = {
  {400, 100}, {0, 50}, {450, 100}, {0, 50}, {400, 100}, {0, 50}, {350, 100}, {0, 200}
};

Tom tomBright[] = {
  {800, 100}, {0, 50}, {850, 100}, {0, 50}, {800, 100}, {0, 50}, {750, 100}, {0, 200}
};

Tom tomVeryBright[] = {
  {1600, 100}, {0, 50}, {1650, 100}, {0, 50}, {1600, 100}, {0, 50}, {1550, 100}, {0, 200}
};

char estadoIluminacao[] = "nenhum";

void tocarTons(Tom tons[], int tamanho) {
  for (int i = 0; i < tamanho; i++) {
    if (tons[i].frequencia == 0) {
      noTone(buzz);
    } else {
      tone(buzz, tons[i].frequencia, tons[i].duracao);
    }
    delay(tons[i].duracao);
  }
}

void setup() {
  Serial.begin(9600);
  pinMode(buzz,OUTPUT); 
}

void loop() {
  int analogValue = analogRead(LIGHT_SENSOR_PIN);

  Serial.print("Analog Value = ");
  Serial.print(analogValue); 
  if (analogValue < 40) {
    Serial.println(" => Dark");
    if(strcmp(estadoIluminacao, "Dark") != 0){
      tocarTons(tomDark, 6);
    }
    strcpy(estadoIluminacao, "Dark");
  } else if (analogValue < 800) {
    Serial.println(" => Dim");
    if(strcmp(estadoIluminacao, "Dim") != 0){
      tocarTons(tomDim, 8);
    }
    strcpy(estadoIluminacao,"Dim");
  } else if (analogValue < 2000) {
    Serial.println(" => Light");
    if(strcmp(estadoIluminacao, "Light") != 0){
      tocarTons(tomLight, 8);
    }
    strcpy(estadoIluminacao,"Light");
  } else if (analogValue < 3200) {
    Serial.println(" => Bright");
    if(strcmp(estadoIluminacao, "Bright") != 0){
      tocarTons(tomBright, 8);
    }
    strcpy(estadoIluminacao,"Bright");
  } else {
    Serial.println(" => Very bright");
    if(strcmp(estadoIluminacao, "Very bright") != 0){
      tocarTons(tomVeryBright, 8);
    }
    strcpy(estadoIluminacao, "Very bright");
  }

  delay(500);
}