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

#define DHTPIN 2
#define DHTTYPE DHT22

DHT dht(DHTPIN, DHTTYPE);
LiquidCrystal_I2C lcd(0x27, 20, 4);

void setup() {
  Wire.begin();
  Serial.begin(9600);
  dht.begin();  // Initialize DHT22 sensor

  lcd.init();          
  lcd.backlight();     
  lcd.setCursor(0, 0);
  lcd.print("Temp: ");       // Changed println() to print()
  lcd.setCursor(0, 1);
  lcd.print("Humidity: ");    // Changed println() to print()
}

void loop() {
  delay(2000);  // Wait 2 seconds between readings
  float tmp = dht.readTemperature();
  float hum = dht.readHumidity();

  if (isnan(tmp) || isnan(hum)) {
    Serial.println("Failed to read from DHT sensor!");
    lcd.setCursor(0, 0);
    lcd.print("Error reading data");
    return;
  }
// sunny condition
  if (tmp >= 20 && hum < 85) {
    String message = "weather is normal";
    Serial.println(message);
    lcd.setCursor(0, 2);
    lcd.print(message); 
    lcd.setCursor(0, 3);
    lcd.print("go for a walk"); 
    // Changed println() to print()
  }
// rainy condition
else if (hum > 85 && tmp > 0) {
    Serial.println("Possible Rain");
    lcd.setCursor(0, 2);
    lcd.print("Rain Possible");
    lcd.setCursor(0, 3);
    lcd.print("Grab umbrellas"); 
    
  }

  // Estimation for Snow
 else if (hum > 70 && tmp <= 0) {
     if (tmp <= 0 && hum >=85) {
    lcd.setCursor(0, 2);
    lcd.print("Warning: Snowstorm");
    lcd.setCursor(0, 3);
    lcd.print("Stay Indoors!");
    Serial.println("Snowstorm Detected!");
  }else {
    Serial.println("Possible Snow");
    lcd.setCursor(0, 2);
    lcd.print("Snow Possible");
    lcd.setCursor(0, 3);
    lcd.print("Stay indoors"); 
  }
  }
  else{
    Serial.println("Possible Snow line31");
  }

  

  lcd.setCursor(6, 0);
  lcd.print(tmp);
  lcd.setCursor(11, 0);
  lcd.print("C");
  lcd.setCursor(10, 1);
  lcd.print(hum);
}