#include <DHT.h>

#define RED_LED_PIN    5   // Pin for red LED
#define YELLOW_LED_PIN 18   // Pin for yellow LED
#define GREEN_LED_PIN  19   // Pin for green LED

DHT dht(4, DHT22);
float temperature;
float humidity;
int counter;

void setup() {
  Serial.begin(9600);
  pinMode(RED_LED_PIN, OUTPUT);
  pinMode(YELLOW_LED_PIN, OUTPUT);
  pinMode(GREEN_LED_PIN, OUTPUT);
  Serial.println("Hello, ESP32!");
}

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

  Serial.println("Data: " + String(counter));
  Serial.print("Temperature:\t");
  Serial.print(dht.readTemperature(false));
  Serial.println("C");
  Serial.print("Temperature:\t");
  Serial.print(dht.readTemperature(true));
  Serial.println("F");
  Serial.println("Humidity: \t" + String(humidity) + "%");
  Serial.print("Heat Index In Celsius: ");
  Serial.println(dht.computeHeatIndex(temperature, humidity, false));
  Serial.print("Heat Index In Fahrenheit: ");
  Serial.println(dht.computeHeatIndex(temperature, humidity, true));
  Serial.println(" ");

  // LED control based on temperature
  if (temperature > 50) {
    digitalWrite(RED_LED_PIN, HIGH);
    digitalWrite(YELLOW_LED_PIN, LOW);
    digitalWrite(GREEN_LED_PIN, LOW);
  } else if (temperature < 50 && temperature > 20) {
    digitalWrite(RED_LED_PIN, LOW);
    digitalWrite(YELLOW_LED_PIN, HIGH);
    digitalWrite(GREEN_LED_PIN, LOW);
  } else {
    digitalWrite(RED_LED_PIN, LOW);
    digitalWrite(YELLOW_LED_PIN, LOW);
    digitalWrite(GREEN_LED_PIN, HIGH);
  }

  delay(1000);
  counter++;
}