#include <Servo.h>

// Pins
const int ledPin = A3;
const int pirPin = A1;          // PIR motion sensor input
const int tempPin = A2;        // Temperature sensor analog input (e.g., LM35)
const int servoPin = D9;

Servo myServo;
int currentAngle = 0;

void setup() {
  Serial.begin(9600);
  pinMode(ledPin, OUTPUT);
  pinMode(pirPin, INPUT);
  myServo.attach(servoPin);
  myServo.write(currentAngle);
}

void loop() {
  // Read sensors
  int pirValue = digitalRead(pirPin);
  float voltage = analogRead(tempPin) * (0.5/1023.0); // Simulated LM35
  float temperature = voltage * 10.0 *4; // LM35: 10mV/°C

  // Send data as JSON
  Serial.print("{\"angle\":");
  Serial.print(currentAngle);
  Serial.print(",\"temperature\":");
  Serial.print(temperature, 1);
  Serial.print(",\"motion\":\"");
  Serial.print(pirValue == HIGH ? "Detected" : "None");
  Serial.println("\"}");

  // Handle incoming serial commands
  if (Serial.available()) {
    String command = Serial.readStringUntil('\n');
    command.trim();

    if (command == "1") {
      digitalWrite(ledPin, HIGH);
    } else if (command == "0") {
      digitalWrite(ledPin, LOW);
    } else if (command.startsWith("m")) {
      int angle = command.substring(1).toInt();
      angle = constrain(angle, 0, 180);
      myServo.write(angle);
      currentAngle = angle;
    }
  }

  delay(1000); // Adjust rate of updates
}