#include <Keypad.h>
#define relay 2

const byte ROWS = 4; //four rows
const byte COLS = 4; //four columns

char keys[ROWS][COLS] = {
  {'1','2','3','A'},
  {'4','5','6','B'},
  {'7','8','9','C'},
  {'*','0','#','D'}
};

String inputPassword = ""; //for input password
const String Passwordbenar[] = {"1234", "147"}; // passwrod yang benar
const int jumlahPassword = sizeof(Passwordbenar) / sizeof(Passwordbenar[0]);  //for jumblah password lebih dari 1

int salahCount = 0; // buat max password 
const int maxSalah = 3; // buat max password 

byte rowPins[ROWS] = {13, 12, 14, 27}; //connect to the row pinouts of the keypad
byte colPins[COLS] = {26, 25, 33, 32}; //connect to the column pinouts of the keypad

Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, ROWS, COLS);
void setup() {
 Serial.begin(9600);
 pinMode(relay, OUTPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
  char key = keypad.getKey();

    if (key){
    passwordinput(key);
  }
}
void passwordinput(char key){
  if (key == '#') { // Cek jika tombol '#' ditekan
    if (cekPassword(inputPassword)) {
      Serial.println("Password benar!");
      salahCount = 0;
    } else {
      salahCount++;
      Serial.print("password salah ");
      if (salahCount >= maxSalah){
        Serial.print("3 kali percobaan");
        digitalWrite(relay, HIGH);
        delay(5000);
        digitalWrite(relay, LOW);
        salahCount = 0;
      }
      else {
        digitalWrite(relay, LOW);
      }
    }
    delay(2000);
    inputPassword = ""; // Reset input password
    Serial.println("Masukkan password:");
    return;
  }
  else {
    inputPassword += key;
    Serial.println(inputPassword);
  }
}
bool cekPassword(String input) {
  for (int i = 0; i < jumlahPassword; i++) {
    if (input == Passwordbenar[i]) {
      return true;
    }
  }
  return false;
}