import android.os.AsyncTask;
import android.os.Build;

import com.squareup.okhttp.OkHttpClient;
import com.squareup.okhttp.Request;

import java.io.IOException;

public class AbstractService extends AsyncTask<Request, Void, String> {

    private static final int ERROR_REQUEST = -1;

    private OnRequestResponse mOnRequestResponse;

    public AbstractService(Request request, OnRequestResponse onRequestResponse) {
        mOnRequestResponse = onRequestResponse;

        if (Build.VERSION.SDK_INT>=Build.VERSION_CODES.HONEYCOMB) {
            this.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, request);
        } else {
            this.execute(request);
        }
    }

    @Override
    protected String doInBackground(Request... request) {
        try {
            return new OkHttpClient()
                    .newCall(request[0])
                    .execute()
                    .body()
                    .string();
        } catch (IOException e) {
            e.printStackTrace();
            return null;
        }
    }

    @Override
    protected void onPostExecute(String result) {
        super.onPostExecute(result);
        if(result != null) {
            mOnRequestResponse.onSucess(result);
        } else {
            mOnRequestResponse.onFail(ERROR_REQUEST);
        }

    }

    public static interface OnRequestResponse {
        public void onSucess(String response);
        public void onFail(int error);
    }

}