#include <LiquidCrystal_I2C.h>
#include <ArduinoJson.h>
DynamicJsonDocument doc(1024);
#define LDR_pin 2
LiquidCrystal_I2C lcd(0x27, 20, 4);
int PIR_pin = 14;
int led = 13;
int buzz = 12;
String roomState;
String motion;
String ledState;
String buzzState;


void setup() {
  pinMode(LDR_pin, INPUT);
  pinMode(PIR_pin, INPUT);
  pinMode(led, OUTPUT);
  pinMode(buzz, OUTPUT);
  lcd.init();
  lcd.backlight();
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  digitalWrite(led, LOW);
}

void loop() {
  delay(1000);
  lcd.clear();
  int pir_value = digitalRead(PIR_pin);
  String data;
  if (digitalRead(LDR_pin) == LOW ){
    lcd.setCursor(0, 0);
    lcd.print("Room : Light");
    digitalWrite(led, LOW);
    lcd.setCursor(0, 2);
    lcd.print("Led : OFF...");
    roomState = "Light";
    ledState = "OFF";
  }
  else {
    lcd.setCursor(0, 0);
    lcd.print("Room : Dark!");
    digitalWrite(led, HIGH);
    lcd.setCursor(0, 2);
    lcd.print("Led : ON...");
    roomState = "Dark";
    ledState = "ON";
  }
  if (pir_value == HIGH) {
    lcd.setCursor(0, 1);
    lcd.print("motion Detected !!");
    digitalWrite(buzz, HIGH);
    lcd.setCursor(0, 3);
    lcd.print("Buzzer :ON ");
    motion = "Detected";
    buzzState = "ON";

  }
  else {
    lcd.setCursor(0, 1);
    lcd.print("Motion undetected !!");
    digitalWrite(buzz, LOW);
    lcd.setCursor(0, 3);
    lcd.print("Buzzer :OFF");
    motion = "Undetected";
    buzzState = "OFF";
  }
  doc["Room State"] = roomState;
  doc["Motion"] = motion;
  doc["LED State"] = ledState;
  doc["BUzzer STate"] = buzzState; 
  serializeJson(doc, data);
  Serial.println(data);
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
}