When removing torrents from hard disk, also remove root folders

src/bittorrent.cpp

@@ -771,10 +771,12 @@ void Bittorrent::deleteTorrent(QString hash, bool delete_local_files) {
   }
   const QString &fileName = h.name();
   // Remove it from session
-  if(delete_local_files)
+  if(delete_local_files) {
+    savePathsToRemove[hash] = h.save_path();
     s->remove_torrent(h.get_torrent_handle(), session::delete_files);
-  else
+  } else {
     s->remove_torrent(h.get_torrent_handle());
+  }
   // Remove it from torrent backup directory
   QDir torrentBackup(misc::BTBackupLocation());
   QStringList filters;
@@ -2070,6 +2072,41 @@ void Bittorrent::addConsoleMessage(QString msg, QString) {
           }
         }
       }
+      else if (torrent_deleted_alert* p = dynamic_cast<torrent_deleted_alert*>(a.get())) {
+        qDebug("A torrent was deleted from the hard disk, attempting to remove the root folder too...");
+        QString hash;
+#if LIBTORRENT_VERSION_MINOR > 14
+        hash = misc::toQString(p->info_hash);
+
+#else
+        // Unfortunately libtorrent v0.14 does not provide the hash,
+        // only the torrent handle that is often invalid when it arrives
+        try {
+          if(p->handle.is_valid()) {
+            hash = misc::toQString(p->handle.info_hash());
+          }
+        }catch(std::exception){}
+#endif
+        if(!hash.isEmpty()) {
+          if(savePathsToRemove.contains(hash)) {
+            misc::removeEmptyTree(savePathsToRemove.take(hash));
+          }
+        } else {
+          // XXX: Fallback
+          QStringList hashes_deleted;
+          foreach(const QString& key, savePathsToRemove.keys()) {
+            // Attempt to delete
+            misc::removeEmptyTree(savePathsToRemove[key]);
+            if(!QDir(savePathsToRemove[key]).exists()) {
+              hashes_deleted << key;
+            }
+          }
+          // Clean up
+          foreach(const QString& key, hashes_deleted) {
+            savePathsToRemove.remove(key);
+          }
+        }
+      }
       else if (storage_moved_alert* p = dynamic_cast<storage_moved_alert*>(a.get())) {
         QTorrentHandle h(p->handle);
         if(h.is_valid()) {

src/bittorrent.h

@@ -226,6 +226,7 @@ private:
   QPointer<BandwidthScheduler> bd_scheduler;
   QMap<QUrl, QString> savepath_fromurl;
   QHash<QString, QHash<QString, TrackerInfos> > trackersInfos;
+  QHash<QString, QString> savePathsToRemove;
   QStringList torrentsToPausedAfterChecking;
   QTimer resumeDataTimer;
   // Ratio

src/src.pro

@@ -3,7 +3,7 @@ LANG_PATH = lang
 ICONS_PATH = Icons
 
 # Set the following variable to 1 to enable debug
-DEBUG_MODE = 0
+DEBUG_MODE = 1
 
 # Global
 TEMPLATE = app