#include "DHT.h"
#define DHTPIN 12
#define LEDpin 13
#define LDRpin 15
#define POTpin 4
#define Relay1 18
#define Relay2 19

#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(115200);
  dht.begin();
  pinMode(LEDpin, OUTPUT);
  pinMode(Relay1, OUTPUT);
  pinMode(Relay2, OUTPUT);
  
}

void loop() {
  float humi = dht.readHumidity();
  float temp = dht.readTemperature();
  int LDR = analogRead(LDRpin);
  int POT = analogRead(POTpin);
  
  if (isnan(humi) || isnan(temp)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }

  Serial.print("Humidity: ");
  Serial.print(humi);
  Serial.print(" %\t");
  Serial.print("Temperature: ");
  Serial.print(temp);
  Serial.println(" °C ");
 
  Serial.print("Light: ");
  Serial.print(LDR);
  Serial.print("\t\t");
  Serial.print("Soil Moisture: ");
  Serial.println(POT);

  //--------------- Light --------------
  if(LDR > 1000) {
    digitalWrite(LEDpin, HIGH);
  }
  else {
    digitalWrite(LEDpin, LOW);
  }
  
  //--------------- DHT22 --------------
  if(humi > 60) {
    digitalWrite(Relay1, HIGH);
  }
  else {
    digitalWrite(Relay1, LOW);
  }
  //--------------- Soil Moisture --------------
  if(POT > 1500) {
    digitalWrite(Relay2, HIGH);
  }
  else {
    digitalWrite(Relay2, LOW);
  }
  delay(1000);
}