#include <OneWire.h>
#include <DallasTemperature.h>


#define Temprature_Sensor_PIN   4
#define Level_Sensor_LOW__PIN   34
#define Level_Sensor_MED__PIN   35
#define Level_Sensor_HIGH_PIN   36

int LOW__Level_Status = 1;// 1 = no liquid detected
int MED__Level_Status = 1;// 1 = no liquid detected
int HIGH_Level_Status = 1;// 1 = no liquid detected


// GPIO where the DS18B20 is connected to
const int oneWireBus = Temprature_Sensor_PIN;
// Setup a oneWire instance to communicate with any OneWire devices
OneWire oneWire(oneWireBus);
// Pass our oneWire reference to Dallas Temperature sensor
DallasTemperature sensors(&oneWire);


void setup() {
  Serial.begin(9600);
  pinMode(Level_Sensor_LOW__PIN, INPUT);
  pinMode(Level_Sensor_MED__PIN, INPUT);
  pinMode(Level_Sensor_HIGH_PIN, INPUT);
  sensors.begin();
}

void loop() {
  // Take 50 readings and calculate average for each sensor
  long lowSum = 0;
  long medSum = 0;
  long highSum = 0;
  int numReadings = 50;
  sensors.requestTemperatures();
  float temperatureC = sensors.getTempCByIndex(0);
  Serial.print(temperatureC);
  Serial.println("ºC");
  for (int i = 0; i < numReadings; i++) {
    lowSum += analogRead(Level_Sensor_LOW__PIN);
    medSum += analogRead(Level_Sensor_MED__PIN);
    highSum += analogRead(Level_Sensor_HIGH_PIN);
    delay(10); // Small delay between readings
  }

  // Calculate averages
  LOW__Level_Status = lowSum / numReadings;
  MED__Level_Status = medSum / numReadings;
  HIGH_Level_Status = highSum / numReadings;

  // Print the averaged values
  Serial.print(LOW__Level_Status);
  Serial.print(" | ");
  Serial.print(MED__Level_Status);
  Serial.print(" | ");
  Serial.print(HIGH_Level_Status);
  Serial.println(" | ");

  if (LOW__Level_Status == 0 && MED__Level_Status == 0 && HIGH_Level_Status == 0) {
    Serial.println("Oil Level is HIGH ---> OK");
  }
  else if (LOW__Level_Status == 0 && MED__Level_Status == 0 && HIGH_Level_Status > 10) {
    Serial.println("Oil Level is Medium ---> Please Fill the Oil and Check For Leaks!!!");
  }
  else if (LOW__Level_Status == 0 && MED__Level_Status > 10 && HIGH_Level_Status > 10) {
    Serial.println("Oil Level is LOW ---> DANGER !!! Please Fill the Oil and Check For Leaks!!!");
  }
  else {
    Serial.println("Oil Level is Empty ---> DANGER !!! STOP THE CAR NOW!!!");
  }

  delay(1000);

}//end of LOOP