#include <BLEDevice.h>
#include <BLEUtils.h>
#include <BLEServer.h>

// Define the BLE service and characteristic UUIDs
#define SERVICE_UUID        "4fafc201-1fb5-459e-8fcc-c5c9c331914b"
#define CHARACTERISTIC_UUID "beb5483e-36e1-4688-b7f5-ea07361b26a8"

void setup() {
    // Initialize the BLE environment
    BLEDevice::init("ESP32-S3");

    // Create a BLE server
    BLEServer *pServer = BLEDevice::createServer();

    // Create a BLE service
    BLEService *pService = pServer->createService(SERVICE_UUID);

    // Create a BLE characteristic
    BLECharacteristic *pCharacteristic = pService->createCharacteristic(
                                                                                 CHARACTERISTIC_UUID,
                                                                                 BLECharacteristic::PROPERTY_READ |
                                                                                 BLECharacteristic::PROPERTY_WRITE
                                                                             );

    // Set the initial value of the characteristic
    pCharacteristic->setValue("Hello, World!");

    // Start the service
    pService->start();

    // Start advertising the BLE service
    BLEAdvertising *pAdvertising = pServer->getAdvertising();
    pAdvertising->addServiceUUID(SERVICE_UUID);
    pAdvertising->start();
}

void loop() {
    // Nothing to do here for this example
}