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package de.podfetcher.storage;
import java.util.ArrayList;
import java.io.File;
import java.util.concurrent.Callable;
import de.podfetcher.feed.*;
import de.podfetcher.service.DownloadService;
import de.podfetcher.util.NumberGenerator;
import de.podfetcher.R;
import android.util.Log;
import android.database.Cursor;
import android.app.DownloadManager;
import android.content.Context;
import android.net.Uri;
import android.os.Messenger;
import android.content.ServiceConnection;
import android.os.IBinder;
import android.content.ComponentName;
import android.os.Message;
import android.os.RemoteException;
import android.content.Intent;
public class DownloadRequester {
private static final String TAG = "DownloadRequester";
public static String EXTRA_DOWNLOAD_ID = "extra.de.podfetcher.storage.download_id";
public static String EXTRA_ITEM_ID = "extra.de.podfetcher.storage.item_id";
public static String ACTION_FEED_DOWNLOAD_COMPLETED = "action.de.podfetcher.storage.feed_download_completed";
public static String ACTION_MEDIA_DOWNLOAD_COMPLETED = "action.de.podfetcher.storage.media_download_completed";
public static String ACTION_IMAGE_DOWNLOAD_COMPLETED = "action.de.podfetcher.storage.image_download_completed";
private static boolean STORE_ON_SD = true;
public static String IMAGE_DOWNLOADPATH = "images/";
public static String FEED_DOWNLOADPATH = "cache/";
public static String MEDIA_DOWNLOADPATH = "media/";
private static DownloadRequester downloader;
private DownloadManager manager;
public ArrayList<FeedFile> feeds;
public ArrayList<FeedFile> images;
public ArrayList<FeedFile> media;
private DownloadRequester(){
feeds = new ArrayList<FeedFile>();
images = new ArrayList<FeedFile>();
media = new ArrayList<FeedFile>();
}
public static DownloadRequester getInstance() {
if(downloader == null) {
downloader = new DownloadRequester();
}
return downloader;
}
private void download(Context context, ArrayList<FeedFile> type, FeedFile item, File dest, boolean visibleInUI) {
Log.d(TAG, "Requesting download of url "+ item.getDownload_url());
type.add(item);
DownloadManager.Request request = new DownloadManager.Request(Uri.parse(item.getDownload_url()));
//request.allowScanningByMediaScanner();
request.setDestinationUri(Uri.fromFile(dest));
request.setVisibleInDownloadsUi(visibleInUI);
// TODO Set Allowed Network Types
DownloadManager manager = (DownloadManager) context.getSystemService(Context.DOWNLOAD_SERVICE);
context.startService(new Intent(context, DownloadService.class));
item.setDownloadId(manager.enqueue(request));
item.setFile_url(dest.toString());
}
public void downloadFeed(Context context, Feed feed) {
download(context, feeds, feed,
new File(getFeedfilePath(context), getFeedfileName(feed)),
true);
}
public void downloadImage(Context context, FeedImage image) {
download(context, images, image,
new File(getImagefilePath(context), getImagefileName(image)),
true);
}
public void downloadMedia(Context context, FeedMedia feedmedia) {
download(context, media, feedmedia,
new File(context.getExternalFilesDir(MEDIA_DOWNLOADPATH), "media-" + media.size()),
true);
}
public void cancelDownload(final Context context, final long id) {
Log.d(TAG, "Cancelling download with id " + id);
DownloadManager manager = (DownloadManager) context.getSystemService(Context.DOWNLOAD_SERVICE);
int removed = manager.remove(id);
if (removed > 0) {
// Delete downloads in lists
Feed feed = getFeed(id);
if (feed != null) {
feeds.remove(feed);
} else {
FeedImage image = getFeedImage(id);
if (image != null) {
images.remove(image);
} else {
FeedMedia m = getFeedMedia(id);
if (media != null) {
media.remove(m);
}
}
}
}
}
/** Get a Feed by its download id */
public Feed getFeed(long id) {
for(FeedFile f: feeds) {
if(f.getDownloadId() == id) {
return (Feed) f;
}
}
return null;
}
/** Get a FeedImage by its download id */
public FeedImage getFeedImage(long id) {
for(FeedFile f: images) {
if(f.getDownloadId() == id) {
return (FeedImage) f;
}
}
return null;
}
/** Get media by its download id */
public FeedMedia getFeedMedia(long id) {
for(FeedFile f: media) {
if(f.getDownloadId() == id) {
return (FeedMedia) f;
}
}
return null;
}
public void removeFeed(Feed f) {
feeds.remove(f);
}
public void removeFeedMedia(FeedMedia m) {
media.remove(m);
}
public void removeFeedImage(FeedImage fi) {
images.remove(fi);
}
/** Get the number of uncompleted Downloads */
public int getNumberOfDownloads() {
return feeds.size() + images.size() + media.size();
}
public int getNumberOfFeedDownloads() {
return feeds.size();
}
public String getFeedfilePath(Context context) {
return context.getExternalFilesDir(FEED_DOWNLOADPATH).toString() + "/";
}
public String getFeedfileName(Feed feed) {
return "feed-" + NumberGenerator.generateLong(feed.getDownload_url());
}
public String getImagefilePath(Context context) {
return context.getExternalFilesDir(IMAGE_DOWNLOADPATH).toString() + "/";
}
public String getImagefileName(FeedImage image) {
return "image-" + NumberGenerator.generateLong(image.getDownload_url());
}
/* ------------ Methods for communicating with the DownloadService ------------- */
private Messenger mService = null;
boolean mIsBound;
private ServiceConnection mConnection = new ServiceConnection() {
public void onServiceConnected(ComponentName className, IBinder service) {
mService = new Messenger(service);
try {
Message msg = Message.obtain(null, DownloadService.MSG_QUERY_DOWNLOADS_LEFT);
Log.d(TAG, "Sending message to DownloadService.");
mService.send(msg);
} catch(RemoteException e) {
Log.e(TAG, "An Exception happened while communication with the DownloadService");
}
}
public void onServiceDisconnected(ComponentName className) {
mService = null;
Log.i(TAG, "Closed connection with DownloadService.");
}
};
/** Notifies the DownloadService to check if there are any Downloads left */
public void notifyDownloadService(Context context) {
context.bindService(new Intent(context, DownloadService.class), mConnection, Context.BIND_AUTO_CREATE);
mIsBound = true;
context.unbindService(mConnection);
mIsBound = false;
}
}
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