#include <LiquidCrystal_I2C.h>
#include <Keypad.h>

const int col = 16;
const int row = 2;
String Array;

LiquidCrystal_I2C lcd (0x27, col ,row);

int Percobaan=0;

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

//define the cymbols on the buttons of the keypads
char hexaKeys[ROWS][COLS] = {
{'1', '2', '3', 'A'},
{'4', '5', '6', 'B'},
{'7', '8', '9', 'C'},
{'*', '0', '#', 'D'}


};
#define lampu 2

byte rowPins[ROWS] = {32,33,25,26}; 
byte colPins[COLS] = {27,14,12,13}; 

//inisialisasi instansi keypad
Keypad customKeypad = Keypad( makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS); 
int posisition = 6;
void setup(){
  Serial.begin(9600);
  //
  lcd.init();
  lcd.backlight();
  pinMode(lampu, OUTPUT);

}


void loop(){
  
  char customKey = customKeypad.getKey();
  lcd.setCursor(2,0);
 lcd.print("MasukanToken");
  if (customKey){
     lcd.setCursor(posisition,1);
    Array += customKey;
    lcd.print(customKey);
    // if (posisition <= 10){
    posisition ++;

    if (customKey == '#'){ // agar tidak lebih dari 8 digit
     Array.remove(Array.length() - 1); //menngurangi array agar # dihapus
    posisition = 20; // jika lebih dari 8 digit maka di pindahkan posisi nya 
    Percobaan++; //counter
     Serial.print("Inputan [");
      Serial.print(Percobaan);
      Serial.print("] : ");
      Serial.println(Array);
    digitalWrite(LED_BUILTIN, HIGH);

    
        if (Array== "1234"){ //input benar 1234
          lcd.clear();
          lcd.setCursor(3,0);
          lcd.print("Berhasil");
          posisition = 6;
          digitalWrite(lampu, HIGH);
          delay(3000);
          // ==  kondisi berhasil output sedang bermain sampai waktu selesai
          
       
 

        }else{
          lcd.clear();
          lcd.setCursor(3,0);
          lcd.print("InputSalah");
          delay(3000);
          posisition = 6;
          Array = "";
                    
        }
        
    }else if(customKey == 'D'){ //menghapus
      posisition = 6;
    lcd.clear();
    Array = "";
    digitalWrite(LED_BUILTIN, LOW );
    }
    // }
    
  }


}