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

#define ONE_WIRE_BUS 2
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);

#define POTENTIOMETER_PIN A0
#define BUZZER_PIN 9
#define LED_PIN 13  

const float lowTempThreshold = 90.0;  
const int lowFoodThreshold = 500;

float temperature;
int foodLevel;

void setup() {
  pinMode(BUZZER_PIN, OUTPUT);
  pinMode(LED_PIN, OUTPUT);
  sensors.begin();
  Serial.begin(9600);
}

void loop() {
  temperature = 95.0;  
  foodLevel = analogRead(POTENTIOMETER_PIN);

  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.print(" °C, Food Level: ");
  Serial.println(foodLevel);

  if (temperature < lowTempThreshold && foodLevel < lowFoodThreshold) {
    Serial.println("Alert: Low Temperature and Low Food Level!");
    dualAlert();  
  } else if (temperature < lowTempThreshold) {
    Serial.println("Alert: Low Temperature!");
    temperatureAlert();  
  } else if (foodLevel < lowFoodThreshold) {
    Serial.println("Alert: Low Food Level!");
    foodAlert(); 
  } else {

    digitalWrite(LED_PIN, HIGH);  
    noTone(BUZZER_PIN); 
  }

  delay(1000); 
}

void dualAlert() {
  for (int i = 0; i < 5; i++) { 
    tone(BUZZER_PIN, 1000);
    delay(600);                   
    noTone(BUZZER_PIN);
    delay(600);                   
  }
}

void temperatureAlert() {
  for (int i = 0; i < 3; i++) { 
    tone(BUZZER_PIN, 500);
    delay(800);                  
    noTone(BUZZER_PIN);
    delay(800);                   
  }
}

void foodAlert() {
  for (int i = 0; i < 4; i++) {  
    tone(BUZZER_PIN, 800);
    delay(500);                   
    noTone(BUZZER_PIN);
    delay(500);                  
  }
}