// We have used two potentiometer in this simulation each assuming to collect audio signals
// This signals are used to calculate emotions.
// we have also added a button to check human presence that is if that button is clicked 
// means that they is no human presence.
const int POT1_PIN = 36;
const int POT2_PIN = 39;
const int BUTTON_PIN = 4;

const float EMOTION_RANGES[5][2] = {
  {0.0, 0.6},
  {0.6, 1.2},
  {1.2, 1.8},
  {1.8, 2.4},
  {2.4, 3.3}
};

const String EMOTIONS[5] = {
  "Happiness",
  "Sadness",
  "Anger",
  "Surprise",
  "Neutral"
};

float floatMap(float x, float in_min, float in_max, float out_min, float out_max) {
  return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
}

String getEmotion(float voltage) {
  for (int i = 0; i < 5; i++) {
    if (voltage >= EMOTION_RANGES[i][0] && voltage < EMOTION_RANGES[i][1]) {
      return EMOTIONS[i];
    }
  }
  return "Unknown";
}

void setup() {
  Serial.begin(9600);
  pinMode(BUTTON_PIN, INPUT_PULLUP);
}

void loop() {
  bool buttonPressed = digitalRead(BUTTON_PIN) == LOW;

  if (buttonPressed) {
    int pot1Value = analogRead(POT1_PIN);
    int pot2Value = analogRead(POT2_PIN);

    float voltage1 = floatMap(pot1Value, 0, 4095, 0, 3.3);
    float voltage2 = floatMap(pot2Value, 0, 4095, 0, 3.3);

    float averageVoltage = (voltage1 + voltage2) / 2.0;

    String emotion = getEmotion(averageVoltage);

    Serial.print("Potentiometer 1 Voltage: ");
    Serial.print(voltage1);
    Serial.print(", Potentiometer 2 Voltage: ");
    Serial.print(voltage2);
    Serial.print(", Average Voltage: ");
    Serial.print(averageVoltage);
    Serial.print(", Emotion: ");
    Serial.println(emotion);
  } else {
    //If button is pressed it means humans are not detected so it potentiometer wont display any emotion
    Serial.println("Human not detected");
  }

  delay(1000);
}