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

const uint8_t ROWS = 4;
const uint8_t COLS = 4;
char keys[ROWS][COLS] = {
  { '1', '2', '3', 'A' },
  { '4', '5', '6', 'B' },
  { '7', '8', '9', 'C' },
  { '*', '0', '#', 'D' }
};

uint8_t colPins[COLS] = { 5, 4, 3, 2 }; // Pins connected to C1, C2, C3, C4
uint8_t rowPins[ROWS] = { 9, 8, 7, 6 }; // Pins connected to R1, R2, R3, R4

Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, ROWS, COLS);


#define I2C_ADDR    0x27
#define LCD_COLUMNS 20
#define LCD_LINES   4
LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

String savedpass="";
String newPass="";
int x;
void setup() {
  Serial.begin(115200);
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print("Enter New Pass");
  x=0;
  
  
}


void loop() {
  
  char key = keypad.getKey();

  
}



String set_Pass(){
  for(int i=0;i<4;i++){
    
  lcd.print(key);
  lcd.setCursor(0, 1);
  if (key != NO_KEY) {
    newPass+=key;
    
  }
  }
  
  lcd.setCursor(0, 0);
  lcd.print("The Door is Locked");
  return newPass;
}


void checkWhatDoYouWant(int x,String pass){
  switch(x){
    case 0:


    break;
  case 1:
  if(pass ==savedpass){
    lcd.println("succeeded");
  }else if(pass.length()== 6 && pass!="123456"){
          lcd.println("failed");
  }
  break;

  case 2:
   
   break;
   default:
   break;
  }

}