#ifndef BLUETOOTH_LE_UART_SERVER
#define BLUETOOTH_LE_UART_SERVER

#include <BLEDevice.h>
#include <BLEServer.h>
#include <BLEUtils.h>
#include <BLE2902.h>
#include <Arduino.h>

class BluetoothLeUartServerCallbacks;

class BluetoothLeUartServer : protected BLEServerCallbacks, protected BLECharacteristicCallbacks
{

public:
    explicit BluetoothLeUartServer(String deviceName, const char uartServiceUUID[36], const char rxUUID[36], const char txUUID[36]);

    // befriend for callbacks
    friend class BLEServer;
    friend class BLECharacteristic;

    // public functions
    void setCallbacks(BluetoothLeUartServerCallbacks *callbacks);
    void sendData(String data);

    bool getDeviceConnected();

protected:
    // callbacks for BLEServer
    void onConnect(BLEServer *pServer) override;
    void onDisconnect(BLEServer *pServer) override;

    // callback for BLECharacteristic
    void onWrite(BLECharacteristic *rxCharacteristic) override;

private:
    const char *uartServiceUUID;
    const char *rxUUID;
    const char *txUUID;

    BLEServer *bleServer;
    BLEService *bleService;
    BLECharacteristic *txCharacteristic;
    BLECharacteristic *rxCharacteristic;
    
    bool deviceConnected = false;
    BluetoothLeUartServerCallbacks *callbacks;
};

class BluetoothLeUartServerCallbacks
{
public:
    virtual ~BluetoothLeUartServerCallbacks(){};

    const char* test = "testlol";

    virtual void onDeviceConnectedChanged(bool deviceConnected);
    virtual void onDataReceived(String data);
};

#endif // BLUETOOTH_LE_UART_SERVER