src/eu/alefzero/owncloud/files/services/FileDownloader.java

   1 package eu.alefzero.owncloud.files.services;
   2
   3 import java.io.File;
   4 import java.io.IOException;
   5
   6 import android.accounts.Account;
   7 import android.accounts.AccountManager;
   8 import android.app.Notification;
   9 import android.app.NotificationManager;
  10 import android.app.PendingIntent;
  11 import android.app.Service;
  12 import android.content.ContentValues;
  13 import android.content.Intent;
  14 import android.os.Environment;
  15 import android.os.Handler;
  16 import android.os.HandlerThread;
  17 import android.os.IBinder;
  18 import android.os.Looper;
  19 import android.os.Message;
  20 import android.os.Process;
  21 import android.util.Log;
  22 import android.widget.RemoteViews;
  23 import eu.alefzero.owncloud.R;
  24 import eu.alefzero.owncloud.authenticator.AccountAuthenticator;
  25 import eu.alefzero.owncloud.db.ProviderMeta.ProviderTableMeta;
  26 import eu.alefzero.owncloud.files.interfaces.OnDatatransferProgressListener;
  27 import eu.alefzero.webdav.WebdavClient;
  28
  29 public class FileDownloader extends Service implements OnDatatransferProgressListener {
  30     public static final String DOWNLOAD_FINISH_MESSAGE = "DOWNLOAD_FINISH";
  31     public static final String BAD_DOWNLOAD_MESSAGE = "BAD_DOWNLOAD";
  32     public static final String EXTRA_ACCOUNT = "ACCOUNT";
  33     public static final String EXTRA_FILE_PATH = "FILE_PATH";
  34     public static final String EXTRA_REMOTE_PATH = "REMOTE_PATH";
  35     public static final String EXTRA_FILE_SIZE = "FILE_SIZE";
  36     private static final String TAG = "FileDownloader";
  37
  38     private NotificationManager mNotificationMngr;
  39     private Looper mServiceLooper;
  40     private ServiceHandler mServiceHandler;
  41     private Account mAccount;
  42     private String mFilePath;
  43     private String mRemotePath;
  44     private int mLastPercent;
  45     private long mTotalDownloadSize;
  46     private long mCurrentDownlodSize;
  47     private Notification mNotification;
  48
  49     private final class ServiceHandler extends Handler {
  50         public ServiceHandler(Looper looper) {
  51             super(looper);
  52         }
  53
  54         @Override
  55         public void handleMessage(Message msg) {
  56             downloadFile();
  57             stopSelf(msg.arg1);
  58         }
  59     }
  60
  61     @Override
  62     public void onCreate() {
  63         super.onCreate();
  64         mNotificationMngr = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
  65         HandlerThread thread = new HandlerThread("FileDownladerThread",
  66                 Process.THREAD_PRIORITY_BACKGROUND);
  67         thread.start();
  68         mServiceLooper = thread.getLooper();
  69         mServiceHandler = new ServiceHandler(mServiceLooper);
  70     }
  71
  72     @Override
  73     public IBinder onBind(Intent arg0) {
  74         return null;
  75     }
  76
  77     @Override
  78     public int onStartCommand(Intent intent, int flags, int startId) {
  79         if (!intent.hasExtra(EXTRA_ACCOUNT)
  80                 && !intent.hasExtra(EXTRA_FILE_PATH)) {
  81             Log.e(TAG, "Not enough information provided in intent");
  82             return START_STICKY;
  83         }
  84         mAccount = intent.getParcelableExtra(EXTRA_ACCOUNT);
  85         mFilePath = intent.getStringExtra(EXTRA_FILE_PATH);
  86         mRemotePath = intent.getStringExtra(EXTRA_REMOTE_PATH);
  87         Message msg = mServiceHandler.obtainMessage();
  88         msg.arg1 = startId;
  89         mServiceHandler.sendMessage(msg);
  90         mCurrentDownlodSize = mLastPercent = 0;
  91         mTotalDownloadSize = intent.getLongExtra(EXTRA_FILE_SIZE, -1);
  92
  93         return START_NOT_STICKY;
  94     }
  95
  96     void downloadFile() {
  97         AccountManager am = (AccountManager) getSystemService(ACCOUNT_SERVICE);
  98
  99
 100         WebdavClient wdc = new WebdavClient(mAccount, getApplicationContext());
 101
 102         String username = mAccount.name.split("@")[0];
 103         String password = "";
 104         try {
 105             password = am.blockingGetAuthToken(mAccount,
 106                     AccountAuthenticator.AUTH_TOKEN_TYPE, true);
 107         } catch (Exception e) {
 108             e.printStackTrace();
 109             return;
 110         }
 111
 112         wdc.setCredentials(username, password);
 113         wdc.allowSelfsignedCertificates();
 114         wdc.setDataTransferProgressListener(this);
 115
 116         mNotification = new Notification(R.drawable.icon, "Downloading file", System.currentTimeMillis());
 117
 118         mNotification.flags |= Notification.FLAG_ONGOING_EVENT;
 119         mNotification.contentView = new RemoteViews(getApplicationContext().getPackageName(), R.layout.progressbar_layout);
 120         mNotification.contentView.setProgressBar(R.id.status_progress, 100, 0, mTotalDownloadSize == -1);
 121         mNotification.contentView.setImageViewResource(R.id.status_icon, R.drawable.icon);
 122         // dvelasco ; contentIntent MUST be assigned to avoid app crashes in versions previous to Android 4.x ;
 123         //              BUT an empty Intent is not a very elegant solution; something smart should happen when a user 'clicks' on a download in the notification bar
 124         mNotification.contentIntent = PendingIntent.getActivity(getApplicationContext(), 0, new Intent(), PendingIntent.FLAG_UPDATE_CURRENT);
 125
 126         mNotificationMngr.notify(1, mNotification);
 127
 128         File sdCard = Environment.getExternalStorageDirectory();
 129         File file = new File(sdCard.getAbsolutePath() + "/owncloud/" + mAccount.name + mFilePath);
 130         try {
 131             file.getParentFile().mkdirs();
 132             file.createNewFile();
 133         } catch (IOException e) {
 134             e.printStackTrace();
 135         }
 136
 137         String message;
 138         if (wdc.downloadFile(mRemotePath, file)) {
 139             ContentValues cv = new ContentValues();
 140             cv.put(ProviderTableMeta.FILE_STORAGE_PATH, file.getAbsolutePath());
 141             getContentResolver().update(
 142                     ProviderTableMeta.CONTENT_URI,
 143                     cv,
 144                     ProviderTableMeta.FILE_NAME + "=? AND "
 145                             + ProviderTableMeta.FILE_ACCOUNT_OWNER + "=?",
 146                     new String[] {
 147                             mFilePath.substring(mFilePath.lastIndexOf('/') + 1),
 148                             mAccount.name });
 149             message = DOWNLOAD_FINISH_MESSAGE;
 150         } else {
 151             file.delete();
 152             message = BAD_DOWNLOAD_MESSAGE;
 153         }
 154
 155         mNotificationMngr.cancel(1);
 156         Intent end = new Intent(message);
 157         end.putExtra(EXTRA_FILE_PATH, file.getAbsolutePath());
 158         sendBroadcast(end);
 159     }
 160
 161     @Override
 162     public void transferProgress(long progressRate) {
 163         mCurrentDownlodSize += progressRate;
 164         int percent = (int)(100.0*((double)mCurrentDownlodSize)/((double)mTotalDownloadSize));
 165         if (percent != mLastPercent) {
 166           mNotification.contentView.setProgressBar(R.id.status_progress, 100, (int)(100*mCurrentDownlodSize/mTotalDownloadSize), mTotalDownloadSize == -1);
 167           mNotification.contentView.setTextViewText(R.id.status_text, percent+"%");
 168           mNotificationMngr.notify(1, mNotification);
 169         }
 170
 171         mLastPercent = percent;
 172     }
 173
 174 }