// #include <Wire.h>
// #include <LiquidCrystal.h>
// #include <Keypad.h>
// #include <Servo.h>
// // Hitesh Patil
// // Define the LCD
// // LCD GP no. connections
// LiquidCrystal lcd(8, 9, 10, 11, 12, 13);

// // Keypad Connections
// Servo Servo1;
// 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'}
// };

// //connect to the row pinouts of the keypad
// byte rowPins[ROWS] = {26, 22, 21, 20}; 
// //connect to the column pinouts of the keypad
// byte colPins[COLS] = {19, 18, 17, 16};
// Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, ROWS, COLS);

// // Define correct password
// const char* correctPassword = "AA2";

// void setup() {
//   Servo1.attach(27);
//   lcd.begin(20, 4); // initialize the LCD
//   lcd.setCursor(2, 1);
//          //  12345678901234567890
//   lcd.print("smart DOOR LOCK");
//   lcd.setCursor(1, 3);
//   lcd.print("password Enter here");
// }

// void loop() {
//   char enteredPassword[6];
//   int passwordIndex = 0;

//   // Get the password from the keypad
//   while (passwordIndex < 5) {
//     char key = keypad.getKey();
//     if (key) {
//       enteredPassword[passwordIndex++] = key;
//       lcd.clear();
//       lcd.setCursor(0, 1);
//       lcd.print("Password : ");
//       lcd.setCursor(11, 1);
//       lcd.print(enteredPassword);
//       delay(500); // Wait for 500 milliseconds to avoid rapid key presses
//       // lcd.clear();
//     }
//   }

//   // Null-terminate the entered password
//   enteredPassword[5] = '\0';
  
//   // enteredPassword.clear();
//   lcd.clear();

//   // Check the entered password
//   if (strcmp(enteredPassword, correctPassword) == 0) {
//     lcd.setCursor(3, 1);
//     lcd.print("SUCCESSFULLY");
//     lcd.setCursor(4, 2);
//     lcd.print("DOOR  OPEN");

//     for (int i = 0; i < 10; i++) {
//       Servo1.write(i);
//       delay(50);
//     }

//     delay(2000); // Wait for 5 seconds
//     lcd.clear();

//     for (int i = 0; i < 90; i++) {
//     Servo1.write(i);
//     delay(100);
//     }

//     for (int i = 0; i < 5; i++) {
//     enteredPassword[i] = '\0';
//     }
    
//     lcd.print("Enter your password");
//   } else {
//     lcd.print("Incorrect password");
//     delay(2000); // Wait for 2 seconds
//   }
//   for (int i = 0; i < 5; i++) {
//     enteredPassword[i] = '\0';
//   }
//   lcd.clear();
//   lcd.print("Enter your password");
// }


#include <Wire.h>
#include <LiquidCrystal.h>
#include <Keypad.h>
#include <Servo.h>
// Hitesh Patil
// Define the LCD
// LCD GP no. connections
LiquidCrystal lcd(8, 9, 10, 11, 12, 13);

// Keypad Connections
Servo Servo1;
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'}
};

// Connect to the row pinouts of the keypad
byte rowPins[ROWS] = {26, 22, 21, 20}; 
// Connect to the column pinouts of the keypad
byte colPins[COLS] = {19, 18, 17, 16};
Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, ROWS, COLS);

// Define correct password
const char* correctPassword = "AA2";

void setup() {
  Servo1.attach(27);
  lcd.begin(20, 4); // Initialize the LCD
  lcd.setCursor(2, 1);
  lcd.print("smart DOOR LOCK");
  lcd.setCursor(1, 3);
  lcd.print("password Enter here");
}

void loop() {
  char enteredPassword[6];
  int passwordIndex = 0;

  // Get the password from the keypad
  while (passwordIndex < 5) {
    char key = keypad.getKey();
    if (key) {
      enteredPassword[passwordIndex++] = key;
      lcd.clear();
      lcd.setCursor(0, 1);
      lcd.print("Password : ");

      // Display asterisks instead of the actual password
      lcd.setCursor(11, 1);
      for (int i = 0; i < passwordIndex; i++) {
        lcd.print('*'); // Print an asterisk for each character entered
      }
      delay(500); // Wait for 500 milliseconds to avoid rapid key presses
    }
  }

  // Null-terminate the entered password
  enteredPassword[5] = '\0';
  
  lcd.clear();

  // Check the entered password
  if (strcmp(enteredPassword, correctPassword) == 0) {
    lcd.setCursor(3, 1);
    lcd.print("SUCCESSFULLY");
    lcd.setCursor(4, 2);
    lcd.print("DOOR  OPEN");

    for (int i = 0; i < 10; i++) {
      Servo1.write(i);
      delay(50);
    }

    delay(2000); // Wait for 2 seconds
    lcd.clear();

    for (int i = 0; i < 90; i++) {
      Servo1.write(i);
      delay(100);
    }

    // Clear entered password
    for (int i = 0; i < 5; i++) {
      enteredPassword[i] = '\0';
    }
    
    lcd.print("Enter your password");
  } else {
    lcd.print("Incorrect password");
    delay(2000); // Wait for 2 seconds
  }

  // Clear entered password
  for (int i = 0; i < 5; i++) {
    enteredPassword[i] = '\0';
  }
  lcd.clear();
  lcd.print("Enter your password");
}