#include <ESP32Servo.h>

#define pirPinDoor        23
#define pirPinInterrupt   22
#define buzzerPin         21
#define servoPin          16

bool lock_status = false;
bool force_open = false;

int pos = 0;

int key = 0;

Servo myServo;

void openDoor(){
  for (pos = 0; pos < 90; pos += 1) {
    myServo.write(pos);
    delay(10);
  }
}

void closeDoor(){
  for (pos = 90; pos > 0; pos -= 1) {
    myServo.write(pos);
    delay(10);
  }
}

void IRAM_ATTR interruptDoor() {
  if(lock_status == true && force_open == false) force_open = true;
}

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);

  pinMode(pirPinDoor, INPUT);
  pinMode(buzzerPin, OUTPUT);

  myServo.attach(servoPin, 500, 2400);

  attachInterrupt(pirPinInterrupt, interruptDoor, HIGH);

  // check either door is lock or not
  if(pos == 90) {
        Serial.println("Motor Servo from 90 to 0");
        closeDoor();
  }
}

void loop() {
  key = digitalRead(pirPinDoor);

  if(force_open == true){
    Serial.println("Intruder : True");
    tone(buzzerPin, 500);
    delay(1000);
    force_open = false;
  } else {
    noTone(buzzerPin);
  }

  if(key == HIGH){
    if(lock_status == true) {
      Serial.println("Door : Open");
      if(pos == 0) {
        Serial.println("Motor Servo from 0 to 90");
        openDoor();
      }
      lock_status = false;
    }
  } else {
    if(lock_status == false) {
      Serial.println("Door : Close");
      if(pos == 90) {
        Serial.println("Motor Servo from 90 to 0");
        closeDoor();
      }
      lock_status = true;
    }
  }
}