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


const byte rows = 4; //four rows
const byte cols = 4; //three columns
char keys[rows][cols] = {
  {'1','2','3','A'},
  {'4','5','6','B'},
  {'7','8','9','C'},
  {'#','0','*','D'}
};


byte rowPins[rows] = {2,3,4,5}; //connect to the row pinouts of the keypad
byte colPins[cols] = {6,7,8,9}; //connect to the column pinouts of the keypad
Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, rows, cols );

String intendedKeyCode = "";
int num = 0;
char key;

//----------------KEYPAD----------------//



LiquidCrystal lcd(A0,A1,10,11,12,13);


//------------------LCD-----------------//
void setup() {
  Serial.begin(9600);
  lcd.begin(20,4);
  lcd.setCursor(0,0);
  lcd.write("Welcome to dd's GUI");
}
void checkForCredentials()
{
  if(intendedKeyCode == "2007")
  {
    num = 0;
    intendedKeyCode = "";
    return;
  }
  else{
    num = 0;
    intendedKeyCode = "";
    return;
  }

}

void loop() {

  key = keypad.getKey();
  if(key != NO_KEY)
  {
    if(num == 4)
    {
      checkForCredentials();
      return;
    }
    intendedKeyCode = intendedKeyCode + String(key);
    num++;
    Serial.println(num);
    Serial.println(intendedKeyCode);
  }

}