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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;
import android.webkit.URLUtil;
public class DownloadRequester {
private static final String TAG = "DownloadRequester";
private static final int currentApi = android.os.Build.VERSION.SDK_INT;
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> downloads;
private DownloadRequester() {
downloads = new ArrayList<FeedFile>();
}
public static DownloadRequester getInstance() {
if (downloader == null) {
downloader = new DownloadRequester();
}
return downloader;
}
private long download(Context context, FeedFile item, File dest) {
if (dest.exists()) {
Log.d(TAG, "File already exists. Deleting !");
dest.delete();
}
Log.d(TAG, "Requesting download of url " + item.getDownload_url());
downloads.add(item);
DownloadManager.Request request = new DownloadManager.Request(
Uri.parse(item.getDownload_url())).setDestinationUri(Uri
.fromFile(dest));
Log.d(TAG, "Version is " + currentApi);
if (currentApi >= 11) {
request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_HIDDEN);
} else {
request.setVisibleInDownloadsUi(false);
request.setShowRunningNotification(false);
}
// TODO Set Allowed Network Types
DownloadManager manager = (DownloadManager) context
.getSystemService(Context.DOWNLOAD_SERVICE);
long downloadId = manager.enqueue(request);
item.setDownloadId(downloadId);
item.setFile_url(dest.toString());
context.startService(new Intent(context, DownloadService.class));
return downloadId;
}
public long downloadFeed(Context context, Feed feed) {
return download(context, feed, new File(getFeedfilePath(context),
getFeedfileName(feed)));
}
public long downloadImage(Context context, FeedImage image) {
return download(context, image, new File(getImagefilePath(context),
getImagefileName(image)));
}
public long downloadMedia(Context context, FeedMedia feedmedia) {
return download(context, feedmedia,
new File(getMediafilePath(context, feedmedia),
getMediafilename(feedmedia)));
}
/**
* Cancels a running download.
*
* @param context
* A context needed to get the DownloadManager service
* @param id
* ID of the download to cancel
* */
public void cancelDownload(final Context context, final long id) {
Log.d(TAG, "Cancelling download with id " + id);
DownloadManager dm = (DownloadManager) context
.getSystemService(Context.DOWNLOAD_SERVICE);
int removed = dm.remove(id);
if (removed > 0) {
FeedFile f = getFeedFile(id);
if (f != null) {
downloads.remove(f);
f.setFile_url(null);
}
}
}
/** Get a feedfile by its download id */
public FeedFile getFeedFile(long id) {
for (FeedFile f : downloads) {
if (f.getDownloadId() == id) {
return f;
}
}
return null;
}
/** Remove an object from the downloads-list of the requester. */
public void removeDownload(FeedFile f) {
downloads.remove(f);
}
public ArrayList<FeedFile> getDownloads() {
return downloads;
}
/** Get the number of uncompleted Downloads */
public int getNumberOfDownloads() {
return downloads.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());
}
public String getMediafilePath(Context context, FeedMedia media) {
return context
.getExternalFilesDir(
MEDIA_DOWNLOADPATH
+ media.getItem().getFeed().getTitle() + "/")
.toString();
}
public String getMediafilename(FeedMedia media) {
return URLUtil.guessFileName(media.getDownload_url(), null,
media.getMime_type());
}
/*
* ------------ Methods for communicating with the DownloadService
* -------------
*/
private DownloadService mService = null;
boolean mIsBound;
private ServiceConnection mConnection = new ServiceConnection() {
public void onServiceConnected(ComponentName className, IBinder service) {
mService = ((DownloadService.LocalBinder) service).getService();
Log.d(TAG, "Connection to service established");
mService.queryDownloads();
}
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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