#include <DHT.h>

// Declare output pins
int redLight = 32;
int greenLight = 33;
int Siren = 17;  // Buzzer
int Fan = 26;
int motionSensor = 23;
int doorClosed = 24; // Assuming doorClosed is connected to pin 24

int motionSensor_value = 0;
int doorClosed_value = 0;

const int fan_Pin = 18;

// Define DHT sensor
#define DHTPIN 22
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");

  pinMode(redLight, OUTPUT);
  pinMode(greenLight, OUTPUT);
  pinMode(Siren, OUTPUT);  // Buzzer
  pinMode(Fan, OUTPUT);
  pinMode(motionSensor, INPUT);
  pinMode(doorClosed, INPUT);

  // Initialize DHT sensor
  dht.begin();
}

void loop() {
  // Read motion sensor value
  motionSensor_value = digitalRead(motionSensor);

  // Read door closed status
  doorClosed_value = digitalRead(doorClosed);

  // Read temperature and humidity from DHT22
  float humidity = dht.readHumidity();
  float temperature = dht.readTemperature();

  // Display probabilities based on conditions
  if (motionSensor_value == LOW) {
    // No motion
    digitalWrite(greenLight, HIGH);
    digitalWrite(redLight, LOW);
    digitalWrite(Fan, LOW);
    digitalWrite(Siren, LOW);

    if (temperature >= 27) {
      digitalWrite(Fan, HIGH);  // Turn on fan when temperature reaches 27 degrees Celsius
    }
  } else {
    // Motion detected
    digitalWrite(greenLight, LOW);
    digitalWrite(redLight, HIGH);

    if (temperature >= 27) {
      digitalWrite(Fan, HIGH);
      digitalWrite(Siren, HIGH);  // Turn on buzzer when door is closed
    } else {
      digitalWrite(Siren, LOW);
    }
  }

  // Display output in Serial Monitor
  Serial.print("Motion: ");
  Serial.print(motionSensor_value == HIGH ? "Detected" : "Not Detected");
  Serial.print(", Temperature: ");
  Serial.print(temperature);
  Serial.print(" °C, Door Closed: ");
  Serial.println(doorClosed_value == HIGH ? "Yes" : "No");
  
  delay(1000);  // Adjust delay as needed for your requirements
}