#include <ESP32Servo.h>

const int entryPIRPin = 34;    
const int exitPIRPin = 22;     
const int doorPin = 23;        
Servo doorServo;              

int parkedCars = 0;         
bool isDoorOpen = false;    

void setup() {
  pinMode(entryPIRPin, INPUT);
  pinMode(exitPIRPin, INPUT);
  doorServo.attach(doorPin);
  closeDoor();  
  Serial.begin(9600);
}

void loop() {
  if (digitalRead(entryPIRPin) == HIGH) { 
    if (parkedCars < 5) {
      parkedCars++;
      Serial.println("Car entered. Parked cars: " + String(parkedCars));
      delay(1000); 
    } else {
      Serial.println("Parking full. Car denied entry.");
    }
    while (digitalRead(entryPIRPin) == HIGH); 
  }

  if (digitalRead(exitPIRPin) == HIGH) { 
    if (parkedCars > 0) {
      parkedCars--;
      Serial.println("Car exited. Parked cars: " + String(parkedCars));
      if (isDoorOpen) {
        closeDoor(); 
      }
      delay(1000); 
    } else {
      Serial.println("No cars parked. Exit sensor malfunction?");
    }
    while (digitalRead(exitPIRPin) == HIGH); 
  }

  if (!isDoorOpen) { 
    openDoor();
  }

  delay(100); 
}

void openDoor() {
  if (parkedCars < 5) { 
    doorServo.write(90);
    isDoorOpen = true;
    Serial.println("Door opened.");
  }
}

void closeDoor() {
  doorServo.write(0); 
  isDoorOpen = false;
  Serial.println("Door closed.");
}