package com.example.nrftest;

import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothGatt;
import android.bluetooth.BluetoothGattCharacteristic;
import android.bluetooth.BluetoothGattService;
import android.content.Context;
import android.util.Log;

import java.io.ByteArrayOutputStream;
import java.util.UUID;

import androidx.annotation.NonNull;
import no.nordicsemi.android.ble.BleManager;
import no.nordicsemi.android.ble.callback.profile.ProfileDataCallback;
import no.nordicsemi.android.ble.data.Data;

public class DecaManager extends BleManager<DecaManagerCallbacks> {
    private static final String TAG = "DecaManager";

    /** Decawave Service UUID. */
    public final static UUID LBS_UUID_SERVICE = UUID.fromString("680c21d9-c946-4c1f-9c11-baa1c21329e7");
    /**  */
    public final static UUID LBS_UUID_LOCATION_DATA_CHAR = UUID.fromString("003bbdf2-c634-4b3d-ab56-7ec889b89a37");



    private BluetoothGattCharacteristic _locationDataCharacteristic;



    public DecaManager(@NonNull final Context context)
    {
        super(context);
    }


    @NonNull
    @Override
    protected BleManagerGattCallback getGattCallback() {
        return mGattCallback;
    }


    /**
     * BluetoothGatt callbacks object.
     */
    private final BleManagerGattCallback mGattCallback = new BleManagerGattCallback() {
        @Override
        protected void initialize() {

            requestMtu(512).enqueue();

            setNotificationCallback(_locationDataCharacteristic).with(mButtonCallback);
//            readCharacteristic(mLedCharacteristic).with(mLedCallback).enqueue();
//            readCharacteristic(mButtonCharacteristic).with(mButtonCallback).enqueue();
            enableNotifications(_locationDataCharacteristic).enqueue();
        }

        @Override
        public boolean isRequiredServiceSupported(@NonNull final BluetoothGatt gatt) {
            final BluetoothGattService service = gatt.getService(LBS_UUID_SERVICE);
            if (service != null) {
                _locationDataCharacteristic = service.getCharacteristic(LBS_UUID_LOCATION_DATA_CHAR);
            }

//            boolean writeRequest = false;
//            if (mLedCharacteristic != null) {
//                final int rxProperties = mLedCharacteristic.getProperties();
//                writeRequest = (rxProperties & BluetoothGattCharacteristic.PROPERTY_WRITE) > 0;
//            }
//
//            mSupported = mButtonCharacteristic != null && mLedCharacteristic != null && writeRequest;
//            return mSupported;

            return _locationDataCharacteristic != null;
        }

        @Override
        protected void onDeviceDisconnected() {
            _locationDataCharacteristic = null;
        }
    };



    private	final ProfileDataCallback mButtonCallback = new ProfileDataCallback() {
        @Override
        public void onDataReceived(@NonNull BluetoothDevice device, @NonNull Data data) {
            Log.d(TAG, "onDataReceived: length=" + data.size() + " data=" + data);

            ByteArrayOutputStream stream = new ByteArrayOutputStream();

            for (int i = 0; i < data.size(); i++) {
                stream.write(data.getByte(i));
            }

            mCallbacks.onTagLocationData(stream.toByteArray());
        }

        @Override
        public void onInvalidDataReceived(@NonNull final BluetoothDevice device,
                                          @NonNull final Data data) {
            Log.w(TAG, "Invalid data received: " + data);
        }
    };
}