public class RefresherFragment extends Fragment{

SwipeRefreshLayout swipeRefreshLayout;
public String markingPeriod;

public static RefresherFragment newInstance(String markingPeriod){
    RefresherFragment instance = new RefresherFragment();
    Bundle bundle = new Bundle();
    bundle.putString("mp", markingPeriod);
    instance.setArguments(bundle);
    return instance;
}

@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    markingPeriod = getArguments().getString("mp");
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

    View view = inflater.inflate(R.layout.mp_refresher_fragment, container, false);

    new Scraper(markingPeriod).execute();

    Log.e("RefresherFragment", "MP=" + markingPeriod);

    return view;
}

//fragment setup-------------------------------------------------------------------------

public ArrayList<String> extractClasses (Document document){
    ArrayList<String> classList = new ArrayList<>();
    Elements elements = document.select(".categorytab");
    for (Element element : elements){
        classList.add(element.text().toString());
    }
    return classList;
}

public ArrayList<String> extractGrades (Document document){
    ArrayList<String> keepList = new ArrayList<>();
    Elements elements = document.select(".cellRight");
    for (Element element : elements){
        boolean keep = true;
        for (Element e : element.parents()){
            if (e.hasClass("cellRight")){
                keep = false;
                break;
            }
        }
        if (keep){
            keepList.add(element.text().toString());
        }
    }
    return keepList;
}

public class Wrapper{
    Document document;
    Elements elements;
}


private class Scraper extends AsyncTask<String, Void, Wrapper> {

    String mMarkingPeriod;

    public Scraper(String mp) {
        mMarkingPeriod = mp;
    }

    @Override
    protected Wrapper doInBackground(String... strings) {
        Wrapper wrapper = new Wrapper();

        SessionManager sessionManager = new SessionManager(getContext());
        String username = sessionManager.getUsername();
        String password = sessionManager.getPassword();


        DataManager dataManager = new DataManager(username,password);
        Map<String, String> preLoginCookies = dataManager.getPreLoginCookies(mMarkingPeriod);
        Map<String, String> postLoginCookies = dataManager.getPostLoginCookies(preLoginCookies);
        Document doc = dataManager.getDocumentByMP(postLoginCookies,mMarkingPeriod);

        if (doc == null){
            Log.e("doInBackground Check", "null");}

        Elements elements = doc.select(".cellRight");

        wrapper.document = doc;
        wrapper.elements = elements;

        return wrapper;
    }

    @Override
    protected void onPostExecute(Wrapper wrapper) {

        Document document = wrapper.document;
        ArrayList <String> grades = extractGrades(document);
        ArrayList <String> classes = extractClasses(document);


        for (String classElement : classes){
            Log.e("Class", classElement);
        }

        for (String gradeElement : grades){
            Log.e("Grade", gradeElement);
        }
        Log.e("Checkpoint", "Iterating elements");

        RecyclerView recyclerView = (RecyclerView)getActivity().findViewById(R.id.grade_recycler);
        recyclerView.setAdapter(new GradeRecyclerAdapter(classes, grades));
        recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
        Log.e("Checkpoint", "Setting up Recycler");

        swipeRefreshLayout = (SwipeRefreshLayout) getActivity().findViewById(R.id.refresher);
        swipeRefreshLayout.setRefreshing(false);

        swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
            @Override
            public void onRefresh() {
                new Scraper(getArguments().getString("mp")).execute();
            }
        });

    }
}
}