#include <DHT.h>

#define DHTPIN 8         // DHT22 sensor pin
#define DHTTYPE DHT22
#define BUZZER 6         // Buzzer pin
#define PIR_KITCHEN 1    // Kitchen PIR sensor
#define PIR_LIVING 4     // Living Room PIR sensor
#define LED_KITCHEN 13   // Kitchen LED
#define LED_LIVING 12    // Living Room LED  

DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(115200);

  pinMode(PIR_KITCHEN, INPUT);
  pinMode(PIR_LIVING, INPUT);
  pinMode(LED_KITCHEN, OUTPUT);
  pinMode(LED_LIVING, OUTPUT);
  pinMode(BUZZER, OUTPUT);

  dht.begin();
}

void loop() {
  // Read PIR sensors
  int motionKitchen = digitalRead(PIR_KITCHEN);
  int motionLiving = digitalRead(PIR_LIVING);

  // 🔵 Kitchen Motion Detection
  if (motionKitchen == HIGH) {
    digitalWrite(LED_KITCHEN, LOW);
    Serial.println("🔵 Kitchen Motion Detected!");
  } else {
    digitalWrite(LED_KITCHEN, HIGH);
  }

  // 🟢 Living Room Motion Detection
  if (motionLiving == HIGH) {
    digitalWrite(LED_LIVING, LOW);
    Serial.println("🟢 Living Room Motion Detected!");
  } else {
    digitalWrite(LED_LIVING, HIGH);
  }

  // Read DHT22 Temperature
  float temperature = dht.readTemperature();

  if (isnan(temperature)) {
    Serial.println("Failed to read from DHT sensor!");
    digitalWrite(BUZZER, LOW);  
    return;
  }

  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.println("°C");

  // 🔥 Fire Alarm Trigger
  if (temperature > 50) {
    digitalWrite(BUZZER, HIGH);
    Serial.println("🔥 WARNING! High Temperature Detected! 🔥");
  } else {
    digitalWrite(BUZZER, LOW);
  }

  delay(2000);
}