#include <Servo.h>

// Define pins
#define PIR_SENSOR 2
#define LIGHT_RELAY 3
#define FAN_RELAY 4
//#define RAIN_SENSOR A0
#define SMOKE_SENSOR A1
//#define SOIL_SENSOR A2
#define WATER_PUMP 5
#define SERVO_PIN 6

Servo doorServo;

void setup() {
    Serial.begin(9600);
    pinMode(PIR_SENSOR, INPUT);
    pinMode(LIGHT_RELAY, OUTPUT);
    pinMode(FAN_RELAY, OUTPUT);
    pinMode(WATER_PUMP, OUTPUT);
    doorServo.attach(SERVO_PIN);
    doorServo.write(0); // Door closed position
}

void loop() {
    int motion = digitalRead(PIR_SENSOR);
    int rain = analogRead(RAIN_SENSOR);
    int smoke = analogRead(SMOKE_SENSOR);
    int soilMoisture = analogRead(SOIL_SENSOR);

    // Room Entry Detection
    if (motion) {
        digitalWrite(LIGHT_RELAY, HIGH);
        digitalWrite(FAN_RELAY, HIGH);
    } else {
        digitalWrite(LIGHT_RELAY, LOW);
        digitalWrite(FAN_RELAY, LOW);
    }

    // Rain Detection
    if (rain > 500) {
        Serial.println("Rain detected! Take necessary action.");
    }

    // Smoke Detection Alert
    if (smoke > 400) {
        Serial.println("Smoke detected! Alert sent to user.");
    }

    // Automatic Watering
    if (soilMoisture < 300) {
        digitalWrite(WATER_PUMP, HIGH);
    } else {
        digitalWrite(WATER_PUMP, LOW);
    }

    // Automatic Door
    if (motion) {
        doorServo.write(90); // Open door
        delay(2000);
        doorServo.write(0); // Close door
    }

    delay(500);
}