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package de.danoeh.antennapod.fragment;
import android.content.Intent;
import android.content.res.Resources;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v7.widget.SearchView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.GridView;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.List;
import de.danoeh.antennapod.R;
import de.danoeh.antennapod.activity.OnlineFeedViewActivity;
import de.danoeh.antennapod.adapter.itunes.ItunesAdapter;
import de.danoeh.antennapod.core.preferences.UserPreferences;
import static de.danoeh.antennapod.adapter.itunes.ItunesAdapter.Podcast;
//Searches iTunes store for given string and displays results in a list
public class ItunesSearchFragment extends Fragment {
final String TAG = "ItunesSearchFragment";
/**
* Search input field
*/
private SearchView searchView;
/**
* Adapter responsible with the search results
*/
private ItunesAdapter adapter;
/**
* List of podcasts retreived from the search
*/
private List<Podcast> searchResults;
/**
* Replace adapter data with provided search results from SearchTask.
* @param result List of Podcast objects containing search results
*/
void updateData(List<Podcast> result) {
this.searchResults = result;
adapter.clear();
//ArrayAdapter.addAll() requires minsdk > 10
for(Podcast p: result) {
adapter.add(p);
}
adapter.notifyDataSetInvalidated();
}
/**
* Constructor
*/
public ItunesSearchFragment() {
// Required empty public constructor
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
adapter = new ItunesAdapter(getActivity(), new ArrayList<Podcast>());
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_itunes_search, container, false);
GridView gridView = (GridView) view.findViewById(R.id.gridView);
gridView.setAdapter(adapter);
//Show information about the podcast when the list item is clicked
gridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Intent intent = new Intent(getActivity(),
OnlineFeedViewActivity.class);
//Tell the OnlineFeedViewActivity where to go
String url = searchResults.get(position).feedUrl;
intent.putExtra(OnlineFeedViewActivity.ARG_FEEDURL, url);
intent.putExtra(OnlineFeedViewActivity.ARG_TITLE, "iTunes");
startActivity(intent);
}
});
//Configure search input view to be expanded by default with a visible submit button
searchView = (SearchView) view.findViewById(R.id.itunes_search_view);
searchView.setIconifiedByDefault(false);
searchView.setIconified(false);
searchView.setSubmitButtonEnabled(true);
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
@Override
public boolean onQueryTextSubmit(String s) {
//This prevents onQueryTextSubmit() from being called twice when keyboard is used
//to submit the query.
searchView.clearFocus();
new SearchTask(s).execute();
return false;
}
@Override
public boolean onQueryTextChange(String s) {
return false;
}
});
SearchView.SearchAutoComplete textField = (SearchView.SearchAutoComplete) searchView.findViewById(de.danoeh.antennapod.R.id.search_src_text);
if(UserPreferences.getTheme() == de.danoeh.antennapod.R.style.Theme_AntennaPod_Dark) {
textField.setTextColor(Resources.getSystem().getColor(android.R.color.white));
} else {
textField.setTextColor(Resources.getSystem().getColor(android.R.color.black));
}
return view;
}
/**
* Search the iTunes store for podcasts using the given query
*/
class SearchTask extends AsyncTask<Void,Void,Void> {
/**
* Incomplete iTunes API search URL
*/
final String apiUrl = "https://itunes.apple.com/search?media=podcast&term=%s";
/**
* Search terms
*/
final String query;
/**
* Search result
*/
final List<Podcast> taskData = new ArrayList<>();
/**
* Constructor
*
* @param query Search string
*/
public SearchTask(String query) {
String encodedQuery = null;
try {
encodedQuery = URLEncoder.encode(query, "UTF-8");
} catch(UnsupportedEncodingException e) {
// this won't ever be thrown
}
if(encodedQuery != null) {
this.query = encodedQuery;
} else {
this.query = query; // failsafe
}
}
//Get the podcast data
@Override
protected Void doInBackground(Void... params) {
//Spaces in the query need to be replaced with '+' character.
String formattedUrl = String.format(apiUrl, query).replace(' ', '+');
HttpClient client = new DefaultHttpClient();
HttpGet get = new HttpGet(formattedUrl);
try {
HttpResponse response = client.execute(get);
String resultString = EntityUtils.toString(response.getEntity());
JSONObject result = new JSONObject(resultString);
JSONArray j = result.getJSONArray("results");
for (int i = 0; i < j.length(); i++){
JSONObject podcastJson = j.getJSONObject(i);
Podcast podcast = new Podcast(podcastJson);
taskData.add(podcast);
}
} catch (IOException | JSONException e) {
e.printStackTrace();
}
return null;
}
//Save the data and update the list
@Override
protected void onPostExecute(Void aVoid) {
super.onPostExecute(aVoid);
updateData(taskData);
}
}
}
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