GitNex-Android-App/app/src/main/java/org/mian/gitnex/activities/AdminGetUsersActivity.java

package org.mian.gitnex.activities;

import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.inputmethod.EditorInfo;
import androidx.appcompat.widget.SearchView;
import androidx.appcompat.widget.Toolbar;
import androidx.lifecycle.ViewModelProvider;
import androidx.recyclerview.widget.LinearLayoutManager;
import org.mian.gitnex.R;
import org.mian.gitnex.adapters.AdminGetUsersAdapter;
import org.mian.gitnex.databinding.ActivityAdminGetUsersBinding;
import org.mian.gitnex.fragments.BottomSheetAdminUsersFragment;
import org.mian.gitnex.helpers.AppUtil;
import org.mian.gitnex.helpers.Constants;
import org.mian.gitnex.structs.BottomSheetListener;
import org.mian.gitnex.viewmodels.AdminGetUsersViewModel;

/**
 * @author M M Arif
 */
public class AdminGetUsersActivity extends BaseActivity implements BottomSheetListener {

	private AdminGetUsersViewModel adminGetUsersViewModel;
	private View.OnClickListener onClickListener;
	private ActivityAdminGetUsersBinding activityAdminGetUsersBinding;
	private AdminGetUsersAdapter adapter;
	private int page = 1;
	private int resultLimit;
	private Boolean searchFilter = false;

	public void onCreate(Bundle savedInstanceState) {

		super.onCreate(savedInstanceState);

		activityAdminGetUsersBinding = ActivityAdminGetUsersBinding.inflate(getLayoutInflater());
		setContentView(activityAdminGetUsersBinding.getRoot());
		adminGetUsersViewModel = new ViewModelProvider(this).get(AdminGetUsersViewModel.class);

		Toolbar toolbar = activityAdminGetUsersBinding.toolbar;
		setSupportActionBar(toolbar);

		initCloseListener();
		activityAdminGetUsersBinding.close.setOnClickListener(onClickListener);

		resultLimit = Constants.getCurrentResultLimit(ctx);

		activityAdminGetUsersBinding.recyclerView.setHasFixedSize(true);
		activityAdminGetUsersBinding.recyclerView.setLayoutManager(new LinearLayoutManager(ctx));

		activityAdminGetUsersBinding.pullToRefresh.setOnRefreshListener(
				() ->
						new Handler(Looper.getMainLooper())
								.postDelayed(
										() -> {
											page = 1;
											activityAdminGetUsersBinding.pullToRefresh
													.setRefreshing(false);
											fetchDataAsync();
											activityAdminGetUsersBinding.progressBar.setVisibility(
													View.VISIBLE);
										},
										50));

		fetchDataAsync();
	}
	;

	private void fetchDataAsync() {

		AdminGetUsersViewModel adminUsersModel =
				new ViewModelProvider(this).get(AdminGetUsersViewModel.class);

		adminUsersModel
				.getUsersList(page, resultLimit, ctx)
				.observe(
						this,
						adminUsersListMain -> {
							adapter = new AdminGetUsersAdapter(adminUsersListMain, ctx);
							adapter.setLoadMoreListener(
									new AdminGetUsersAdapter.OnLoadMoreListener() {

										@Override
										public void onLoadMore() {

											page += 1;
											adminGetUsersViewModel.loadMoreUsersList(
													page, resultLimit, ctx, adapter);
											activityAdminGetUsersBinding.progressBar.setVisibility(
													View.VISIBLE);
										}

										@Override
										public void onLoadFinished() {

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

							if (adapter.getItemCount() > 0) {
								activityAdminGetUsersBinding.recyclerView.setAdapter(adapter);
								activityAdminGetUsersBinding.noDataUsers.setVisibility(View.GONE);
								searchFilter = true;
							} else {
								adapter.notifyDataChanged();
								activityAdminGetUsersBinding.recyclerView.setAdapter(adapter);
								activityAdminGetUsersBinding.noDataUsers.setVisibility(
										View.VISIBLE);
							}

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

	@Override
	public boolean onCreateOptionsMenu(final Menu menu) {

		final MenuInflater inflater = getMenuInflater();
		inflater.inflate(R.menu.generic_nav_dotted_menu, menu);

		new Handler(Looper.getMainLooper())
				.postDelayed(
						() -> {
							if (searchFilter) {

								boolean connToInternet = AppUtil.hasNetworkConnection(appCtx);

								inflater.inflate(R.menu.search_menu, menu);

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

								if (!connToInternet) {
									return;
								}

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

											@Override
											public boolean onQueryTextSubmit(String query) {
												return true;
											}

											@Override
											public boolean onQueryTextChange(String newText) {

												adapter.getFilter().filter(newText);
												return false;
											}
										});
							}
						},
						500);

		return true;
	}

	@Override
	public boolean onOptionsItemSelected(MenuItem item) {

		int id = item.getItemId();

		if (id == android.R.id.home) {

			finish();
			return true;
		} else if (id == R.id.genericMenu) {

			BottomSheetAdminUsersFragment bottomSheet = new BottomSheetAdminUsersFragment();
			bottomSheet.show(getSupportFragmentManager(), "usersBottomSheet");
			return true;
		} else {

			return super.onOptionsItemSelected(item);
		}
	}

	@Override
	public void onButtonClicked(String text) {

		if ("newUser".equals(text)) {
			startActivity(new Intent(AdminGetUsersActivity.this, CreateNewUserActivity.class));
		}
	}

	private void initCloseListener() {
		onClickListener = view -> finish();
	}
}