#include "BluetoothSerial.h"

BluetoothSerial SerialBT;
const int ledPin = 12;

void setup() {
  Serial.begin(115200);
  SerialBT.begin("ESP32_LED");
  pinMode(ledPin, OUTPUT);
  Serial.println("Bluetooth LED Controller Ready!");
}

void loop() {
  if (SerialBT.available()) {
    String command = SerialBT.readStringUntil('\n');
    command.trim();

    Serial.print("Received: ");
    Serial.println(command);

    if (command.equalsIgnoreCase("ON")) {
      digitalWrite(ledPin, HIGH);
      SerialBT.println("LED ON");
    } 
    else if (command.equalsIgnoreCase("OFF")) {
      digitalWrite(ledPin, LOW);
      SerialBT.println("LED OFF");
    } 
    else {
      SerialBT.println("Unknown Command");
    }
  }
}