#define BLYNK_TEMPLATE_NAME "Cattle Monitoring System"
#define BLYNK_AUTH_TOKEN "uSDmb2rqnyzAOOiCSbReSIiSlnUt3he1"


#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <DHT.h>

#define DHTPIN 21
#define DHTTYPE DHT22
#define BUTTON1_PIN 12
#define BUTTON2_PIN 14
#define BUZZER_PIN 27
#define ALERT_TEMPERATURE 20

DHT dht(DHTPIN, DHTTYPE);
LiquidCrystal_I2C lcd(0x27, 16, 2);

int counter = 0;

void setup() {
  Serial.begin(115200);
  Serial.println("Starting...");

  dht.begin();
  lcd.init();
  lcd.backlight();
  
  pinMode(BUZZER_PIN, OUTPUT);
  digitalWrite(BUZZER_PIN, LOW);

  pinMode(BUTTON1_PIN, INPUT_PULLUP);
  pinMode(BUTTON2_PIN, INPUT_PULLUP);

  lcd.setCursor(0, 0);
  lcd.print("Smart Cattle");
  lcd.setCursor(0, 1);
  lcd.print("Monitoring");
  delay(2000);
}

void loop() {
  float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();

  if (isnan(temperature) || isnan(humidity)) {
    Serial.println("Failed to read from DHT sensor!");
    lcd.setCursor(0, 0);
    lcd.print("Failed to read");
    lcd.setCursor(0, 1);
    lcd.print("from DHT sensor");
    delay(2000);
    return;
  }

  if (temperature > ALERT_TEMPERATURE) {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("ALERT: High Temp!");
    lcd.setCursor(0, 1);
    lcd.print("Temp: ");
    lcd.print(temperature);
    lcd.print(" C");

    Serial.println("High temperature detected, buzzing...");
    digitalWrite(BUZZER_PIN, HIGH);
    delay(5000); // Buzz for 5 seconds
    digitalWrite(BUZZER_PIN, LOW);
    delay(1000); // Wait for 1 second after buzzer off
  }
  else {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Temp: ");
    lcd.print(temperature);
    lcd.print(" C");
    lcd.setCursor(0, 1);
    lcd.print("Hum: ");
    lcd.print(humidity);
    lcd.print(" %");

    lcd.setCursor(10, 1);
    lcd.print("Cnt: ");
    lcd.print(counter);
  }

  if (digitalRead(BUTTON1_PIN) == LOW) {
    counter++;
    delay(200);
  }
  
  if (digitalRead(BUTTON2_PIN) == LOW) {
    counter = 0;
    delay(200);
  }

  delay(2000);
}