const int TRIGGER_PIN = 16;    // Ultrasonic sensor trigger pin
const int ECHO_PIN = 17;       // Ultrasonic sensor echo pin
const int PHOTO_PIN = 34;      // Photoresistor analog pin

const unsigned long DELAY_TIME = 1000;
const unsigned long AVERAGE_PERIOD = 600000;

unsigned long startTime = 0;
unsigned long lastAverageTime = 0;
unsigned long lastMeasurementTime = 0;
unsigned int measurementCount = 0;
float totalDistance = 0;
unsigned int totalPhotoValue = 0;
float highestDistance = 0;
unsigned int highestPhotoValue = 0;
float lowestDistance = 0;
unsigned int lowestPhotoValue = 0;

void setup() {
  Serial.begin(115200);
  startTime = millis();
  lastAverageTime = startTime;
}

float measureDistance() {
  pinMode(TRIGGER_PIN, OUTPUT);
  digitalWrite(TRIGGER_PIN, LOW);
  delayMicroseconds(2);

  digitalWrite(TRIGGER_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIGGER_PIN, LOW);

  pinMode(ECHO_PIN, INPUT);
  unsigned long duration = pulseIn(ECHO_PIN, HIGH);
  float distance = (duration / 2.0) * 0.0343;  // Calculate distance in centimeters

  return distance;
}

int measurePhotoresistor() {
  int photoValue = analogRead(PHOTO_PIN);
  return photoValue;
}

void updateStatistics(float distance, unsigned int photoValue) {
  /* Update highest distance */
  if (distance > highestDistance) {
    highestDistance = distance;
    
  }

  /* Update highest photo value */
  if (photoValue > highestPhotoValue) {
    highestPhotoValue = photoValue;
  }

  /* Update lowest distance */
  if (measurementCount == 0 || distance < lowestDistance) {
    lowestDistance = distance;
  }

  /* Update lowest photo value */
  if (measurementCount == 0 || photoValue < lowestPhotoValue) {
    lowestPhotoValue = photoValue;
    Serial.println("test 1");
  }
}

void printAverages(float averageDistance, unsigned int averagePhotoValue) {
  /* Print the overall average */
  Serial.print("Overall Average: Distance=");
  Serial.print(averageDistance);
  Serial.print(", PhotoValue=");
  Serial.println(averagePhotoValue);

  /* Print the highest and lowest values */
  Serial.print("Highest Values: Distance=");
  Serial.print(highestDistance);
  Serial.print(", PhotoValue=");
  Serial.println(highestPhotoValue);
  Serial.print("Lowest Values: Distance=");
  Serial.print(lowestDistance);
  Serial.print(", PhotoValue=");
  Serial.println(lowestPhotoValue);
}

void loop() {
  unsigned long currentTime = millis();

 
  if (currentTime - lastMeasurementTime >= DELAY_TIME) {
    /* Read distance from the ultrasonic sensor */
    float distance = measureDistance();
  
    /* Read value from the photoresistor */
    int photoValue = measurePhotoresistor();

    /* Update cumulative totals and statistics */
    totalDistance += distance;
    totalPhotoValue += photoValue;
    measurementCount++;
    updateStatistics(distance, photoValue);

    lastMeasurementTime = currentTime;
  }

  if (currentTime - lastAverageTime >= AVERAGE_PERIOD) {
    /* Calculate average for the last 10 minutes */
    float averageDistance = totalDistance / measurementCount;
    unsigned int averagePhotoValue = totalPhotoValue / measurementCount;

    /* Print the averages */
    printAverages(averageDistance, averagePhotoValue);

    /* Reset the variables */
    totalDistance = 0;
    totalPhotoValue = 0;
    measurementCount = 0;

    lastAverageTime = currentTime;
  }
}