// كود البوابة مع الصوت
#include <Keypad.h>

#define RELAY_PIN   21 // ESP32 pin GIOP14 connected to the IN pin of relay تم التعديل 
#define ROW_NUM     4  // four rows
#define COLUMN_NUM  4  // four columns
#define BUZZ_PINN   16  //تم الانشاء 

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

byte pin_rows[ROW_NUM] = {13, 12, 14, 27};    // GIOP19, GIOP18, GIOP5, GIOP17 connect to the row pins  تم التعديل 
byte pin_column[COLUMN_NUM] = {26, 25, 33, 32}; // GIOP16, GIOP4, GIOP0, GIOP2 connect to the column pins تم التعديل 

Keypad keypad = Keypad( makeKeymap(keys), pin_rows, pin_column, ROW_NUM, COLUMN_NUM );

const String password_1 = "4"; // change your password here
const String password_2 = "5";  // change your password here
const String password_3 = "9";  // change your password here
String input_password;

void setup() {
  Serial.begin(9600);
  input_password.reserve(32); // maximum input characters is 32
  pinMode(RELAY_PINN, OUTPUT); 
  digitalWrite(RELAY_PINN, LOW); //تم التعديل 
   // lock the door

   pinMode(BUZZ_PIN, OUTPUT);  //تم الانشاء 
  digitalWrite(BUZZ_PIN, LOW);  //تم الانشاء
}

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

  if (key) {
    Serial.println(key);

    if (key == '*') {
      input_password = ""; // reset the input password
    } else if (key == '#') {
      if (input_password == password_1 || input_password == password_2 || input_password == password_3) {
        Serial.println("Valid Password => unlock the door");
        //................................. تم التعديل 
        digitalWrite(BUZZ_PIN , HIGH);
        delay(200);
        digitalWrite(BUZZ_PIN , LOW);
        delay(200);
        digitalWrite(BUZZ_PIN , HIGH);
        delay(200);
        digitalWrite(BUZZ_PIN , LOW);
        delay(200);
        digitalWrite(BUZZ_PIN , HIGH);
        delay(200);
        digitalWrite(BUZZ_PIN , LOW);
        delay(300);
        
        //................................ الى هنا تم التعديل
        digitalWrite(RELAY_PINN, HIGH);  // unlock the door for 20 seconds تم التعديل
        delay(50);
        digitalWrite(RELAY_PINN, LOW); // lock the door  تم التعديل 
      } else {
        digitalWrite(BUZZ_PIN, HIGH);
        delay(500);
        digitalWrite(BUZZ_PIN , LOW);
        Serial.println("Invalid Password => Try again");
      }

      input_password = ""; // reset the input password
    } else {
      input_password += key; // append new character to input password string
    }
  }
}