GitNex/app/src/main/java/org/mian/gitnex/fragments/MyIssuesFragment.java

package org.mian.gitnex.fragments;

import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.view.inputmethod.EditorInfo;
import androidx.annotation.NonNull;
import androidx.fragment.app.Fragment;
import androidx.lifecycle.ViewModelProvider;
import androidx.recyclerview.widget.DividerItemDecoration;
import androidx.recyclerview.widget.LinearLayoutManager;
import org.mian.gitnex.R;
import org.mian.gitnex.activities.BaseActivity;
import org.mian.gitnex.activities.MainActivity;
import org.mian.gitnex.adapters.ExploreIssuesAdapter;
import org.mian.gitnex.databinding.FragmentIssuesBinding;
import org.mian.gitnex.viewmodels.IssuesViewModel;

/**
 * @author M M Arif
 */

public class MyIssuesFragment extends Fragment {

	private FragmentIssuesBinding fragmentIssuesBinding;
	private ExploreIssuesAdapter adapter;
	private int page = 1;
	private Menu menu;
	public String state = "open";

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

		fragmentIssuesBinding = FragmentIssuesBinding.inflate(inflater, container, false);
		setHasOptionsMenu(true);

		fragmentIssuesBinding.recyclerView.setHasFixedSize(true);
		fragmentIssuesBinding.recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
		DividerItemDecoration dividerItemDecoration = new DividerItemDecoration(fragmentIssuesBinding.recyclerView.getContext(),
			DividerItemDecoration.VERTICAL);
		fragmentIssuesBinding.recyclerView.addItemDecoration(dividerItemDecoration);

		((MainActivity) requireActivity()).setFragmentRefreshListenerMyIssues(myIssuesState -> {

			state = myIssuesState;
			if(myIssuesState.equals("open")) {
				menu.getItem(1).setIcon(R.drawable.ic_filter);
			}
			else {
				menu.getItem(1).setIcon(R.drawable.ic_filter_closed);
			}

			fragmentIssuesBinding.progressBar.setVisibility(View.VISIBLE);
			fragmentIssuesBinding.noDataIssues.setVisibility(View.GONE);

			fetchDataAsync(((BaseActivity) requireActivity()).getAccount().getAuthorization(), null, myIssuesState);
		});

		fragmentIssuesBinding.pullToRefresh.setOnRefreshListener(() -> new Handler(Looper.getMainLooper()).postDelayed(() -> {

			page = 1;
			fragmentIssuesBinding.pullToRefresh.setRefreshing(false);
			IssuesViewModel.loadIssuesList(((BaseActivity) requireActivity()).getAccount().getAuthorization(), null, "issues", true, state, getContext());
			fragmentIssuesBinding.progressBar.setVisibility(View.VISIBLE);
		}, 50));

		fetchDataAsync(((BaseActivity) requireActivity()).getAccount().getAuthorization(), null, state);

		return fragmentIssuesBinding.getRoot();
	};

	private void fetchDataAsync(String instanceToken, String query, String state) {

		IssuesViewModel issuesModel = new ViewModelProvider(this).get(IssuesViewModel.class);

		issuesModel.getIssuesList(instanceToken, query, "issues", true, state, getContext()).observe(getViewLifecycleOwner(), issuesListMain -> {

			adapter = new ExploreIssuesAdapter(issuesListMain, getContext());
			adapter.setLoadMoreListener(new ExploreIssuesAdapter.OnLoadMoreListener() {

				@Override
				public void onLoadMore() {

					page += 1;
					IssuesViewModel.loadMoreIssues(instanceToken, query, "issues", true, state, page, getContext(), adapter);
					fragmentIssuesBinding.progressBar.setVisibility(View.VISIBLE);
				}

				@Override
				public void onLoadFinished() {

					fragmentIssuesBinding.progressBar.setVisibility(View.GONE);
				}
			});

			if(adapter.getItemCount() > 0) {
				fragmentIssuesBinding.recyclerView.setAdapter(adapter);
				fragmentIssuesBinding.noDataIssues.setVisibility(View.GONE);
			}
			else {
				adapter.notifyDataChanged();
				fragmentIssuesBinding.recyclerView.setAdapter(adapter);
				fragmentIssuesBinding.noDataIssues.setVisibility(View.VISIBLE);
			}

			fragmentIssuesBinding.progressBar.setVisibility(View.GONE);
		});
	}

	@Override
	public void onCreateOptionsMenu(@NonNull Menu menu, @NonNull MenuInflater inflater) {

		this.menu = menu;
		inflater.inflate(R.menu.search_menu, menu);
		inflater.inflate(R.menu.filter_menu, menu);
		super.onCreateOptionsMenu(menu, inflater);

		MenuItem searchItem = menu.findItem(R.id.action_search);
		androidx.appcompat.widget.SearchView searchView = (androidx.appcompat.widget.SearchView) searchItem.getActionView();
		searchView.setImeOptions(EditorInfo.IME_ACTION_DONE);

		searchView.setOnQueryTextListener(new androidx.appcompat.widget.SearchView.OnQueryTextListener() {

			@Override
			public boolean onQueryTextSubmit(String query) {
				fetchDataAsync(((BaseActivity) requireActivity()).getAccount().getAuthorization(), query, state);
				searchView.setQuery(null, false);
				searchItem.collapseActionView();
				return false;
			}

			@Override
			public boolean onQueryTextChange(String newText) {
				return false;
			}
		});
	}
}