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package se.leap.bitmaskclient;
import android.content.res.AssetManager;
import com.pedrogomez.renderers.AdapteeCollection;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Collection;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
/**
* Created by parmegv on 4/12/14.
*/
public class ProviderManager implements AdapteeCollection<Provider> {
private AssetManager assets_manager;
private Set<Provider> default_providers;
private Set<Provider> custom_providers;
final protected static String URLS = "urls";
public ProviderManager(AssetManager assets_manager) {
this.assets_manager = assets_manager;
default_providers = default_providers();
custom_providers = new HashSet<Provider>();
}
/**
* Loads providers data from url files contained in the assets folder
* @return true if the files were correctly read
*/
private Set<Provider> default_providers() {
Set<Provider> providers = new HashSet<Provider>();
try {
for(String file : assets_manager.list(URLS)) {
String main_url = extractProviderMainUrlFromAssetsFile(URLS + "/" + file);
providers.add(new Provider(new URL(main_url)));
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return providers;
}
private String extractProviderMainUrlFromAssetsFile(String file_path) {
String provider_main_url = "";
try {
InputStream input_stream_file_contents = assets_manager.open(file_path);
byte[] urls_file_bytes = new byte[input_stream_file_contents.available()];
if(input_stream_file_contents.read(urls_file_bytes) > 0) {
String urls_file_content = new String(urls_file_bytes);
JSONObject file_contents = new JSONObject(urls_file_content);
provider_main_url = file_contents.getString(Provider.MAIN_URL);
}
} catch (JSONException e) {
} catch (IOException e) {
}
return provider_main_url;
}
public Set<Provider> providers() {
Set<Provider> all_providers = new HashSet<Provider>();
all_providers.addAll(default_providers);
all_providers.addAll(custom_providers);
return all_providers;
}
@Override
public int size() {
return providers().size();
}
@Override
public Provider get(int index) {
Iterator<Provider> iterator = providers().iterator();
while(iterator.hasNext() && index > 0) {
iterator.next();
index--;
}
return iterator.next();
}
@Override
public void add(Provider element) {
custom_providers.add(element);
}
@Override
public void remove(Provider element) {
custom_providers.remove(element);
}
@Override
public void addAll(Collection<Provider> elements) {
custom_providers.addAll(elements);
}
@Override
public void removeAll(Collection<Provider> elements) {
custom_providers.removeAll(elements);
default_providers.removeAll(elements);
}
@Override
public void clear() {
default_providers.clear();
custom_providers.clear();
}
}
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