api handler

package net.ramastudio.jwtez.utils;

import android.content.Context;
import android.util.Log;
import android.widget.Toast;

import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;

import org.json.JSONException;
import org.json.JSONObject;

import java.io.IOException;

import okhttp3.ResponseBody;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;

public abstract class ApiHandler implements Callback<ResponseBody> {


    public abstract void onSuccess(String data);


    public abstract void onComplete(boolean error, String msg);

    // handle data dari server
    @Override
    public void onResponse(Call<ResponseBody> call, Response<ResponseBody> response) {
        if(response.isSuccessful()){
            String resp = null;
            try {

                resp = response.body().string();
                Log.i("REQ_NOT",resp);

                int index = resp.indexOf("{\"error\"");

                JSONObject obj = new JSONObject(resp.substring(index));

                boolean error = obj.getBoolean("error");

                onComplete(error, obj.getString("msg"));
                if(!error){


                    String data = obj.getString("data");
                    onSuccess(data);
                }
            } catch (IOException e) {

                e.printStackTrace();
                onComplete(true, "Gagal membaca data");
            } catch (JSONException e) {

                e.printStackTrace();
                onComplete(true, "Gagal parsing data");
            }
        } else {
            String err = "";
            try {
                err = response.errorBody().string();
            } catch (IOException e) {
                e.printStackTrace();
            }
            onComplete(true, "Request gagal");
            Log.e("REQ_NOT", err);
        }
    }

    @Override
    public void onFailure(Call<ResponseBody> call, Throwable t) {

        onComplete(true, t.getMessage());
    }
}