#include <Stepper.h>
#include <Keypad.h>

const int stepsPerRevolution = 200;  // change this to fit the number of steps per revolution for your motor

// Stepper motor on pins 8 through 11:
Stepper myStepper(stepsPerRevolution, 8, 9, 10, 11);

// Define the keypad layout and pins
const byte ROWS = 4;    // Keypad rows
const byte COLS = 4;    // Keypad columns
char keys[ROWS][COLS] = {
  {'1', '2', '3', 'A'},
  {'4', '5', '6', 'B'},
  {'7', '8', '9', 'C'},
  {'*', '0', '#', 'D'}
};
byte rowPins[ROWS] = {30, 31, 32, 33}; // Connect to the row pins of the keypad
byte colPins[COLS] = {34, 35, 36, 37}; // Connect to the column pins of the keypad
Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, ROWS, COLS);

String inputCode = "";  // String to store entered code
String correctCode = "1234";  // Define the correct 4-digit code
bool doorIsOpen = false;  // Keeps track of the door's current state
const int buttonPin = 6;    // Pin for button
const int pirPin = 7;      // Pin for PIR sensor

bool motorState = false;    // Track motor state: true = open, false = closed
bool lockdown = false;      // Lockdown state: true = disabled

void setup() {
  // Set motor speed
  myStepper.setSpeed(60);

  // Initialize serial communication
  Serial.begin(9600);

  // Set button and PIR sensor as input
  pinMode(buttonPin, INPUT);
  pinMode(pirPin, INPUT);
}

void loop() {
  // Check button and PIR sensor states
  if (digitalRead(buttonPin) == HIGH || digitalRead(pirPin) == HIGH) {
    lockdown = !lockdown;   // Toggle lockdown on or off
    delay(1000);            // Debounce delay
  }

  // If the motor is locked down, skip control
  if (lockdown) {
    Serial.println("Motor is locked down.");
    return;
  }

  // Handle keypad input
  char key = keypad.getKey();
  
  if (key) {
    Serial.println(key);
    
    // If the # key is pressed, toggle motor state (open/close)
    if (key == '#') {
      if (motorState) {
        // Close the door (rotate motor back)
        Serial.println("Closing door...");
        myStepper.step(-stepsPerRevolution);  // Close motor (1 revolution back)
        motorState = false;
      } else {
        // Open the door (rotate motor forward)
        Serial.println("Opening door...");
        myStepper.step(stepsPerRevolution);   // Open motor (1 revolution forward)
        motorState = true;
      }
    }
    
    // You can add more key functionality here if needed
  }
}