#include <LiquidCrystal_I2C.h>
#include <Wire.h>
#include <RTClib.h>

int led = 13;
int pirpin = 12;
int pirState = LOW;
int val = 0;
int ldrpin = 7;
int lampuPin = 9;

// Inisialisasi objek RTC
RTC_DS1307 rtc;

LiquidCrystal_I2C lcd(0x27,20,4);

void setup() {
  // Mengaktifkan koneksi I2C
  Wire.begin();

  // Memastikan RTC telah terhubung
  if (! rtc.begin()) {
    Serial.println("Modul RTC tidak terdeteksi");
    while (1);
  }

  // Mengaktifkan output pada pin lampu
  pinMode(lampuPin, OUTPUT);

  pinMode(led, OUTPUT);
  pinMode(pirpin, INPUT);
  pinMode(ldrpin, INPUT);
  Serial.begin(9600);
  lcd.init();
  lcd.backlight();
  lcd.setCursor(1,0);
  lcd.print("LAMPU OTOMATIS");
  lcd.setCursor(2,1);
  lcd.print("Adzra Gladis");
  delay(2000);
  lcd.clear();
}

void loop() {
  // Membaca waktu saat ini
  DateTime now = rtc.now();
  int hour = now.hour();
  int minute = now.minute();
  int second = now.second();
  
  // Menyalakan lampu dari jam 21:49:00 sampai 21:52:00
  if (hour == 21 && minute == 49 && second == 0) {
    digitalWrite(lampuPin, HIGH);
  } else if (hour == 21 && minute == 52 && second == 0) {
    digitalWrite(lampuPin, LOW);
  }
  
  Serial.print("JAM DIGITAL : ");
  Serial.print(hour);
  Serial.print(":");
  Serial.print(minute);
  Serial.println(" WIB.");
  delay(2000);
  
  val = digitalRead(pirpin);
  
  if(val == LOW && digitalRead(ldrpin) == LOW){
    digitalWrite(led, LOW);
    lcd.setCursor(0,0);
    lcd.print("Ruangan Terang");
    if(pirState == HIGH){
      lcd.setCursor(0,1);
      lcd.print("Tidak Ada Gerakan");
      pirState = LOW;
    }
  } else if(val == HIGH && digitalRead(ldrpin) == LOW){
    digitalWrite(led, LOW);
    lcd.setCursor(0,0);
    lcd.print("Ruangan Terang");
    if(pirState == LOW){
      lcd.setCursor(0,1);
      lcd.print("Ada Gerakan");
      pirState = HIGH;
    }
  } else if(val == HIGH && digitalRead(ldrpin) == HIGH){
    digitalWrite(led, HIGH);
    lcd.setCursor(0,0);
    lcd.print("Ruangan Redup");
    if(pirState == LOW){
      lcd.setCursor(0,1);
      lcd.print("Ada Gerakan");
      pirState = HIGH;
    }
  }
}