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package de.danoeh.antennapod.fragment;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.GridView;
import android.widget.ProgressBar;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.fragment.app.Fragment;
import de.danoeh.antennapod.R;
import de.danoeh.antennapod.activity.OnlineFeedViewActivity;
import de.danoeh.antennapod.adapter.itunes.ItunesAdapter;
import de.danoeh.antennapod.discovery.ItunesTopListLoader;
import de.danoeh.antennapod.discovery.PodcastSearchResult;
import io.reactivex.disposables.Disposable;
import java.util.ArrayList;
import java.util.List;
/**
* Searches iTunes store for top podcasts and displays results in a list.
*/
public class DiscoveryFragment extends Fragment {
private static final String TAG = "ItunesSearchFragment";
/**
* Adapter responsible with the search results.
*/
private ItunesAdapter adapter;
private GridView gridView;
private ProgressBar progressBar;
private TextView txtvError;
private Button butRetry;
private TextView txtvEmpty;
/**
* List of podcasts retreived from the search.
*/
private List<PodcastSearchResult> searchResults;
private List<PodcastSearchResult> topList;
private Disposable disposable;
/**
* Replace adapter data with provided search results from SearchTask.
* @param result List of Podcast objects containing search results
*/
private void updateData(List<PodcastSearchResult> result) {
this.searchResults = result;
adapter.clear();
if (result != null && result.size() > 0) {
gridView.setVisibility(View.VISIBLE);
txtvEmpty.setVisibility(View.GONE);
for (PodcastSearchResult p : result) {
adapter.add(p);
}
adapter.notifyDataSetInvalidated();
} else {
gridView.setVisibility(View.GONE);
txtvEmpty.setVisibility(View.VISIBLE);
}
}
public DiscoveryFragment() {
// Required empty public constructor
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setHasOptionsMenu(true);
}
@Override
public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View root = inflater.inflate(R.layout.fragment_itunes_search, container, false);
((AppCompatActivity) getActivity()).setSupportActionBar(root.findViewById(R.id.toolbar));
gridView = root.findViewById(R.id.gridView);
adapter = new ItunesAdapter(getActivity(), new ArrayList<>());
gridView.setAdapter(adapter);
//Show information about the podcast when the list item is clicked
gridView.setOnItemClickListener((parent, view1, position, id) -> {
PodcastSearchResult podcast = searchResults.get(position);
if (podcast.feedUrl == null) {
return;
}
Intent intent = new Intent(getActivity(), OnlineFeedViewActivity.class);
intent.putExtra(OnlineFeedViewActivity.ARG_FEEDURL, podcast.feedUrl);
startActivity(intent);
});
progressBar = root.findViewById(R.id.progressBar);
txtvError = root.findViewById(R.id.txtvError);
butRetry = root.findViewById(R.id.butRetry);
txtvEmpty = root.findViewById(android.R.id.empty);
loadToplist();
return root;
}
@Override
public void onDestroy() {
super.onDestroy();
if (disposable != null) {
disposable.dispose();
}
adapter = null;
}
private void loadToplist() {
if (disposable != null) {
disposable.dispose();
}
gridView.setVisibility(View.GONE);
txtvError.setVisibility(View.GONE);
butRetry.setVisibility(View.GONE);
txtvEmpty.setVisibility(View.GONE);
progressBar.setVisibility(View.VISIBLE);
ItunesTopListLoader loader = new ItunesTopListLoader(getContext());
disposable = loader.loadToplist(25).subscribe(podcasts -> {
progressBar.setVisibility(View.GONE);
topList = podcasts;
updateData(topList);
}, error -> {
Log.e(TAG, Log.getStackTraceString(error));
progressBar.setVisibility(View.GONE);
txtvError.setText(error.toString());
txtvError.setVisibility(View.VISIBLE);
butRetry.setOnClickListener(v -> loadToplist());
butRetry.setVisibility(View.VISIBLE);
});
}
}
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