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

// Inisialisasi LCD I2C dengan alamat 0x27 dan ukuran 16x2
LiquidCrystal_I2C lcd(0x27, 16, 2);

// Pin LED dan Push Button
const int led1 = 8;
const int led2 = 9;
const int button1 = 6;
const int button2 = 7;

// Variabel status tampilan
int lastDisplay = 0; // 0 = default, 1 = button1, 2 = button2

void setup() {
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(button1, INPUT);
  pinMode(button2, INPUT);

  lcd.init();
  lcd.backlight();

  // Tampilkan default saat awal
  lcd.setCursor(0, 0);
  lcd.print("NIM  : 223611044");
  lcd.setCursor(0, 1);
  lcd.print("NAMA : Johsua");
}

void loop() {
  bool btn1 = digitalRead(button1);
  bool btn2 = digitalRead(button2);

  if (btn1 == HIGH && lastDisplay != 1) {
    digitalWrite(led1, HIGH);
    digitalWrite(led2, LOW);

    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("PUSH BUTTON 1");
    lcd.setCursor(0, 1);
    lcd.print("LED 1 NYALA");

    lastDisplay = 1;
  }
  else if (btn2 == HIGH && lastDisplay != 2) {
    digitalWrite(led1, LOW);
    digitalWrite(led2, HIGH);

    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("PUSH BUTTON 2");
    lcd.setCursor(0, 1);
    lcd.print("LED 2 NYALA");

    lastDisplay = 2;
  }
  else if (btn1 == LOW && btn2 == LOW && lastDisplay != 0) {
    digitalWrite(led1, LOW);
    digitalWrite(led2, LOW);

    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("NIM  : 223611044");
    lcd.setCursor(0, 1);
    lcd.print("NAMA : Johsua");

    lastDisplay = 0;
  }

  delay(100); // sedikit delay untuk debounce
}