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

package org.mian.gitnex.fragments;

import android.content.Intent;
import android.os.Bundle;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import androidx.lifecycle.Observer;
import androidx.lifecycle.ViewModelProviders;
import androidx.recyclerview.widget.DividerItemDecoration;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import android.os.Handler;
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 android.widget.ImageView;
import android.widget.ProgressBar;
import android.widget.TextView;
import org.mian.gitnex.R;
import org.mian.gitnex.activities.MainActivity;
import org.mian.gitnex.activities.NewRepoActivity;
import org.mian.gitnex.adapters.ReposListAdapter;
import org.mian.gitnex.helpers.Authorization;
import org.mian.gitnex.models.UserRepositories;
import org.mian.gitnex.util.AppUtil;
import org.mian.gitnex.util.TinyDB;
import org.mian.gitnex.viewmodels.RepositoriesListViewModel;
import java.util.List;
import java.util.Objects;
import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;

/**
 * Author M M Arif
 */

public class RepositoriesFragment extends Fragment {

    private ProgressBar mProgressBar;
    private RecyclerView mRecyclerView;
    private ReposListAdapter adapter;
    private ImageView createNewRepo;
    private TextView noDataRepo;

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

        boolean connToInternet = AppUtil.haveNetworkConnection(Objects.requireNonNull(getContext()));

        final View v = inflater.inflate(R.layout.fragment_repositories, container, false);
        setHasOptionsMenu(true);
        ((MainActivity) Objects.requireNonNull(getActivity())).setActionBarTitle(getResources().getString(R.string.pageTitleRepositories));

        TinyDB tinyDb = new TinyDB(getContext());
        final String instanceUrl = tinyDb.getString("instanceUrl");
        final String loginUid = tinyDb.getString("loginUid");
        final String instanceToken = "token " + tinyDb.getString(loginUid + "-token");

        final SwipeRefreshLayout swipeRefresh = v.findViewById(R.id.pullToRefresh);

        noDataRepo = v.findViewById(R.id.noData);
        mProgressBar = v.findViewById(R.id.progress_bar);
        mRecyclerView = v.findViewById(R.id.recyclerView);
        mRecyclerView.setHasFixedSize(true);
        mRecyclerView.setLayoutManager(new LinearLayoutManager(getContext()));

        DividerItemDecoration dividerItemDecoration = new DividerItemDecoration(mRecyclerView.getContext(),
                DividerItemDecoration.VERTICAL);
        mRecyclerView.addItemDecoration(dividerItemDecoration);

        createNewRepo = v.findViewById(R.id.addNewRepo);

        createNewRepo.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View view) {
                Intent intent = new Intent(view.getContext(), NewRepoActivity.class);
                startActivity(intent);
            }

        });

        mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
            @Override
            public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
                if (dy > 0 && createNewRepo.isShown()) {
                    createNewRepo.setVisibility(View.GONE);
                } else if (dy < 0 ) {
                    createNewRepo.setVisibility(View.VISIBLE);

                }
            }

            @Override
            public void onScrollStateChanged(@NonNull RecyclerView recyclerView, int newState) {
                super.onScrollStateChanged(recyclerView, newState);
            }
        });

        if(connToInternet) {

            swipeRefresh.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
                @Override
                public void onRefresh() {
                    new Handler().postDelayed(new Runnable() {
                        @Override
                        public void run() {
                            swipeRefresh.setRefreshing(false);
                            RepositoriesListViewModel.loadReposList(instanceUrl, Authorization.returnAuthentication(getContext(), loginUid, instanceToken));
                        }
                    }, 50);
                }
            });

            fetchDataAsync(instanceUrl, Authorization.returnAuthentication(getContext(), loginUid, instanceToken));

        }
        else {
            mProgressBar.setVisibility(View.GONE);
        }

        return v;

    }

    @Override
    public void onResume() {
        super.onResume();
        TinyDB tinyDb = new TinyDB(getContext());
        final String instanceUrl = tinyDb.getString("instanceUrl");
        final String loginUid = tinyDb.getString("loginUid");
        final String instanceToken = "token " + tinyDb.getString(loginUid + "-token");

        if(tinyDb.getBoolean("repoCreated")) {
            RepositoriesListViewModel.loadReposList(instanceUrl, Authorization.returnAuthentication(getContext(), loginUid, instanceToken));
            tinyDb.putBoolean("repoCreated", false);
        }
    }

    private void fetchDataAsync(String instanceUrl, String instanceToken) {

        RepositoriesListViewModel repoModel = ViewModelProviders.of(this).get(RepositoriesListViewModel.class);

        repoModel.getUserRepositories(instanceUrl, instanceToken).observe(this, new Observer<List<UserRepositories>>() {
            @Override
            public void onChanged(@Nullable List<UserRepositories> reposListMain) {
                adapter = new ReposListAdapter(getContext(), reposListMain);
                if(adapter.getItemCount() > 0) {
                    mRecyclerView.setAdapter(adapter);
                    noDataRepo.setVisibility(View.GONE);
                }
                else {
                    adapter.notifyDataSetChanged();
                    mRecyclerView.setAdapter(adapter);
                    noDataRepo.setVisibility(View.VISIBLE);
                }
                mProgressBar.setVisibility(View.GONE);
            }
        });

    }

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

        boolean connToInternet = AppUtil.haveNetworkConnection(Objects.requireNonNull(getContext()));

        inflater.inflate(R.menu.search_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);

        if(!connToInternet) {
            return;
        }

        searchView.setOnQueryTextListener(new androidx.appcompat.widget.SearchView.OnQueryTextListener() {
            @Override
            public boolean onQueryTextSubmit(String query) {
                return false;
            }

            @Override
            public boolean onQueryTextChange(String newText) {
                adapter.getFilter().filter(newText);
                return false;
            }
        });

    }

}