#include <LiquidCrystal.h>
#include <Keypad.h>
#include <Servo.h>

LiquidCrystal lcd(12, 11, 10, 9, 8, 7);

const byte KEYPAD_ROWS = 4;
const byte KEYPAD_COLS = 4;
byte rowPins[KEYPAD_ROWS] = {5, 4, 3, 2};
byte colPins[KEYPAD_COLS] = {A3, A2, A1, A0};
char keys[KEYPAD_ROWS][KEYPAD_COLS] = {
  {'1', '2', '3', 'A'},
  {'4', '5', '6', 'B'},
  {'7', '8', '9', 'C'},
  {'*', '0', '#', 'D'}
};

Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, KEYPAD_ROWS, KEYPAD_COLS);
String password = "1234567";
int benerdong = 0;
Servo door;

void setup() {
  Serial.begin(115200);
  lcd.begin(16,2);
  door.attach(6);
}

void loop() {
  lcd.setCursor(2,0);
  String message = " Password: ";

  for (byte i = 0; i < message.length(); i++){
    lcd.print(message[i]);
    delay(100);
  }

  lcd.setCursor(2,1);
  lcd.print(" [_______]");
  lcd.setCursor(4,1);
  String result(4,1);
  while(result.length()< 7){
    char key = keypad.getKey();
    if (key >= '0' && key <= '9'){
      lcd.print(key);
      result += key;
    }
  }

  if (password == result){
    lcd.clear();
    lcd.print("Password Benar");
    delay(1000);
    lcd.clear();
    door.write(0); // pintu akan terbuka
  } 
  else {
    lcd.clear();
    lcd.print("Password Salah");
    delay(1000);
    lcd.clear();
    door.write(90); // pintu tidak akan terbuka (tertutup)
  }
}