#include <Wire.h>
#include <LiquidCrystal_I2C.h>

#define I2C_ADDR 0x27
#define TOTAL_ROWS 2
#define TOTAL_COLUMNS 16
const int pir = 14;
const int armingButton = 2;      // Button to arm the alarm
const int disarmingButton = 3;   // Button to disarm the alarm
#define Buzzer 4

LiquidCrystal_I2C lcd(I2C_ADDR, TOTAL_COLUMNS, TOTAL_ROWS);

bool armed = false;               // Alarm status: true if armed, false if disarmed


#define BLYNK_TEMPLATE_ID "TMPL22hsdEfCt"
#define BLYNK_TEMPLATE_NAME "Project"
#define BLYNK_AUTH_TOKEN "ekZa-s1y02oLoM3_KALeJeimkTzGD9mL"
#define BLYNK_PRINT Serial

#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>

char ssid[] = "Wokwi-GUEST";
char pass[] = "";

BlynkTimer timer;

BLYNK_WRITE(V0) {
  int armedswitch = param.asInt();
  Serial.println(armedswitch);
  if(armedswitch==1)
  {
     digitalWrite(Buzzer, HIGH);
  }
  else
  {
     digitalWrite(Buzzer, LOW);
  }
}




void myTimerEvent()
{
// Check if the arming button is pressed
  if (digitalRead(armingButton) == LOW && !armed) {
    armed = true;
      digitalWrite(Buzzer, HIGH);
   Serial.println("Alarm Armed");
  }

  // Check if the disarming button is pressed
  if (digitalRead(disarmingButton) == LOW && armed) {
    armed = false;
      digitalWrite(Buzzer, LOW);
      Serial.println("Alarm Disarmed");

   
  }

 
  // If the alarm is armed and the PIR sensor detects motion
  if ( digitalRead(pir) == HIGH) 
  {
    lcd.clear();
    lcd.println("INTRUDER ALERT");
    digitalWrite(Buzzer, HIGH);    // Sound the buzzer
    delay(5000);                   // Alarm duration
    digitalWrite(Buzzer, LOW);     // Turn off the buzzer
  } else {
    lcd.clear();
    lcd.println("All Secure.");
  }

  delay(500); // Add a small delay to prevent rapid LCD updates



}


void setup() {
  lcd.init();
  lcd.backlight();
  pinMode(pir, INPUT);
  pinMode(Buzzer, OUTPUT);
  pinMode(armingButton, INPUT_PULLUP);    // Using internal pull-up resistors
  pinMode(disarmingButton, INPUT_PULLUP); // Using internal pull-up resistors
  digitalWrite(Buzzer, LOW);
  Serial.begin(9600);

    Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);
    timer.setInterval(1000L, myTimerEvent);
}

void loop() {

  
  Blynk.run();
  timer.run();
  }