#define BLYNK_TEMPLATE_ID "TMPL6WCF3t-Je"
#define BLYNK_TEMPLATE_NAME "relay"
#define BLYNK_AUTH_TOKEN "oBaIgguIa-Q1ZI8NuJCvvlXfh1BVDA1d"

#include <Wire.h> 
#include <LiquidCrystal_I2C.h>
#include <ESP32Servo.h>
#include <BlynkSimpleEsp32.h>
#include <Keypad.h>




#define PIR_PIN 19
#define LED_PIN 5
#define TRIG_PIN 13
#define ECHO_PIN 12
#define BUZZER_PIN 18
// #define SERVO_PIN 18
#define RELAY_PIN 2

LiquidCrystal_I2C lcd(0x27, 20, 4);

const int servoPin = 18;

int attempts = 0;
const int maxAttempts = 3;
Servo servo;
int pos = 0;

const int Password_Length = 7;
String Data;
String Master = "1234567";
byte data_count = 0;
char customKey;
int lockOutput = 5;


// Define keypad layout
const byte ROWS = 4;
const byte COLS = 4;
char hexaKeys[ROWS][COLS] = {
  { '1', '2', '3' },
  { '4', '5', '6' },
  { '7', '8', '9' },
  { '*', '0', '#' }
};
byte rowPins[ROWS] = { 32, 33, 34, 35 };
byte colPins[COLS] = { 36, 37, 38, 39};
Keypad customKeypad = Keypad(makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS);



void setup() 
{
  Serial.begin(115200);
  Serial.println("Hello, Raafat Al3a9y Smart Home 🏡!");
  pinMode(PIR_PIN, INPUT);
  // pinMode(LED_PIN, OUTPUT);
  pinMode(TRIG_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);
  pinMode(BUZZER_PIN, OUTPUT);
  pinMode(RELAY_PIN, OUTPUT);

  lcd.init();                      
  lcd.backlight();
  // Servo.attach(SERVO_PIN);
   //  attach servo pin with a min/max timings of 500 microseconds and 2400 microseconds
  servo.attach(servoPin, 500, 2400);


}

void loop() {

  light();
  Access();
  

}



void Access() 
{

   long duration, distance;
  digitalWrite(TRIG_PIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);
  duration = pulseIn(ECHO_PIN, HIGH);
  distance = duration * 0.034 / 2;
  
  if (distance < 50) 
        {

          digitalWrite(LED_PIN, HIGH);
          lcd.setCursor(0, 0);
          lcd.print("Enter Password:");
          customKey = customKeypad.getKey();
          if (customKey) 
            {
              Data += customKey;
              lcd.setCursor(data_count, 1);
              lcd.print("*");
              data_count++;
            }
          if (data_count == Password_Length) 
          {
              if (Data == Master) 
              {
                opendoor();
                delay(1000);
                lockdoor();
                
              } 
            else 
              {
                lcd.clear();
                lcd.setCursor(0, 0);
                lcd.print("Incorrect");
                attempts++;
                delay(1000);
                lcd.clear();
              }
              clearData();
              if (attempts >= 2) {
                lcd.clear();
                lcd.setCursor(0, 0);
                lcd.print("Max Attempts");
                delay(6000);
                lcd.clear();
              }
          }
          
          delay(1000);
          digitalWrite(LED_PIN, LOW);
        }


    
}

void Face() {
  lcd.print("Enter success");
  digitalWrite(lockOutput, HIGH);
  delay(3000);
  digitalWrite(lockOutput, LOW);
  delay(2000);
}

void clearData() 
{
  data_count = 0;
  Data = "";
}

void opendoor()
{

  for (pos = 0; pos <= 180; pos += 1) 
  {
    servo.write(pos);
    delay(10);
  }

}


void lockdoor()
{
  for (pos = 180; pos >= 0; pos -= 1) 
  {
    servo.write(pos);
    delay(10);
  }


}


void light()
{

int pirState = digitalRead(PIR_PIN);
  
  if (pirState == HIGH) 
  {
    // digitalWrite(LED_PIN, HIGH);
    digitalWrite(RELAY_PIN, HIGH);

    lcd.setCursor(0,0);
    lcd.print("Motion Detected");
    delay(500);
  } 
  else 
  {
    // digitalWrite(LED_PIN, LOW);
    digitalWrite(RELAY_PIN, LOW);

    lcd.clear();
  }

}