#include <ArduinoJson.h>
#include <LiquidCrystal_I2C.h>
#include <DHT.h>
LiquidCrystal_I2C lcd(0x27, 20, 4);
DynamicJsonDocument doc(1024);
int relay1 = 15;
int relay2 = 2;
String ledState;
String buzzState;
String relay1State;
String relay2State;
const int tempPin = 12;
String data;
DHT dht(tempPin, DHT22);

void setup(){
  lcd.init();
  lcd.backlight();
  Serial.begin(115200);
  pinMode(relay1, OUTPUT);
  pinMode(relay2, OUTPUT);
}

void loop(){
  digitalWrite(relay1, HIGH);
  float humidity = dht.readHumidity();
  float tempe = dht.readTemperature();
  
  if(humidity>10){
  digitalWrite(relay1, LOW);
  relay1State = "OFF";
  ledState = "ON";
  lcd.setCursor(0,0);
  lcd.print("Humidity: "+ String(humidity));
  lcd.setCursor(0,1);
  lcd.print("Temp: "+ String(tempe));
  doc["Humidity"] = humidity;
  doc["Relay 1 state"] = relay1State;
  doc["LED state"] = ledState;
  }

  else{
  relay1State = "ON";
  doc["Relay 1 state"] = relay1State;
  ledState = "OFF";
  doc["LED state"] = ledState;
  }
  lcd.setCursor(0,2);
  lcd.print("LED: "+ String(ledState));

  if(tempe<50){
  digitalWrite(relay2, LOW);
  relay2State = "OFF";
  buzzState = "ON";
  doc["Temperature"] = tempe;
  doc["Relay 2 state"] = relay2State;
  doc["Buzzer State"] = buzzState;
  }
  else{
    relay2State = "OFF";
    buzzState = "ON";
    doc["Relay 2 state"] = relay2State;
    doc["Buzzer State"] = buzzState;
  }
  lcd.setCursor(0,3);
  lcd.print("Buzzer: "+ String(buzzState));
  serializeJson(doc, data);
  Serial.print(data);
}