const int THERMISTORPIN = 32;

// Number of samples to take and average
const int NUMSAMPLES = 150; // Number of measurements = 300 seconds (10 min)

// Variables for overall statistics
unsigned long totalMeasurements = 0;
float overallSum = 0.0;
float highestTemp = -999.0;
float lowestTemp = 999.0;

// Array to store averaged measurements (circular buffer)
const int MAX_AVERAGES = 18; // 18 measurements over 3 hours (10 min interval)
float averagedMeasurements[MAX_AVERAGES];
int currentAverageIndex = 0;

// Calculate temperature
float calculateTemperature(float sample) {
  float voltage = sample * (5000.0 / 1024.0);
  float temperatureC = (voltage - 500) / 10.0;
  temperatureC = temperatureC-772
  ;

  return temperatureC;
}

void setup()
{
  Serial.begin(115200);
  delay(1000);
  Serial.println("Program start");
}

void loop()
{
  static unsigned long previousTime = 0;
  static unsigned long tenpreviousTime = 0;
  const unsigned long interval = 1000; // Display live data once per second
  const unsigned long teninterval = 600000; // Ten minute intervals

  unsigned long currentTime = millis(); // Get current time


  if (currentTime - previousTime >= interval)
  {
    previousTime = currentTime;

    float liveData = analogRead(THERMISTORPIN);
    float liveTemperature = calculateTemperature(liveData);

    Serial.print("Live Temperature: ");
    Serial.print(liveTemperature);
    Serial.println(" °C");

    totalMeasurements++;
    overallSum += liveTemperature;
    if (liveTemperature > highestTemp)
    {
      highestTemp = liveTemperature;
    }
    if (liveTemperature < lowestTemp)
    {
      lowestTemp = liveTemperature;
    }
  }

  if (currentTime - tenpreviousTime >= teninterval)
  {
    tenpreviousTime = currentTime;
    float average = 0.0;
    for (int i = 0; i < NUMSAMPLES; i++)
    {
      float sample = analogRead(THERMISTORPIN);
      float temperature = calculateTemperature(sample);
      average += temperature;
    }
    average /= NUMSAMPLES;

    averagedMeasurements[currentAverageIndex] = average;
    currentAverageIndex = (currentAverageIndex + 1) % MAX_AVERAGES;
  }

  if (Serial.available() > 0)
  {
    char message = Serial.read();
    if (message == 'a')
    {
      Serial.print("Highest Temperature: ");
      Serial.print(highestTemp);
      Serial.println(" °C");

      // Print lowest temperature
      Serial.print("Lowest Temperature: ");
      Serial.print(lowestTemp);
      Serial.println(" °C");

      // Print overall average temperature
      float overallAverage = overallSum / totalMeasurements;
      Serial.print("Overall Average Temperature: ");
      Serial.print(overallAverage);
      Serial.println(" °C");

      // Print averaged measurements
      Serial.println("Averaged Measurements:");
      for (int i = 0; i < MAX_AVERAGES; i++)
      {
        Serial.print("Measurement ");
        Serial.print(i + 1);
        Serial.print(": ");
        Serial.print(averagedMeasurements[i]);
        Serial.println(" °C");
      }
    }
  }
}