#include <DHT.h>

#define DHTPIN 2        // Pin where the DHT22 is connected
#define DHTTYPE DHT22   // DHT 22 (AM2302)
#define LIGHT_SENSOR_PIN A0
#define HEATER_PIN 3
#define HUMIDIFIER_PIN 4
#define LIGHT_PIN 5

DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(9600);
  dht.begin();
  pinMode(HEATER_PIN, OUTPUT);
  pinMode(HUMIDIFIER_PIN, OUTPUT);
  pinMode(LIGHT_PIN, OUTPUT);
}

void loop() {
  // Reading temperature and humidity
  float humidity = dht.readHumidity();
  float temperature = dht.readTemperature();
  int lightLevel = analogRead(LIGHT_SENSOR_PIN);

  // Control temperature
  if (temperature < 20) {
    digitalWrite(HEATER_PIN, HIGH); // Turn on heater
  } else {
    digitalWrite(HEATER_PIN, LOW);  // Turn off heater
  }

  // Control humidity
  if (humidity < 60) {
    digitalWrite(HUMIDIFIER_PIN, HIGH); // Turn on humidifier
  } else {
    digitalWrite(HUMIDIFIER_PIN, LOW);  // Turn off humidifier
  }

  // Control lighting
  if (lightLevel < 500) {
    digitalWrite(LIGHT_PIN, HIGH); // Turn on grow lights
  } else {
    digitalWrite(LIGHT_PIN, LOW);  // Turn off grow lights
  }

  // Print sensor data for debugging
  Serial.print("Temp: ");
  Serial.print(temperature);
  Serial.print("C, Humidity: ");
  Serial.print(humidity);
  Serial.print("%, Light Level: ");
  Serial.println(lightLevel);

  delay(2000); // Wait for 2 seconds before next loop
}