Remove cache data when the user logs out

src/Cache.cc

@@ -83,7 +83,10 @@ Cache::Cache(const QString &userId)
 
         txn.commit();
 
-        isMounted_ = true;
+        isMounted_      = true;
+        cacheDirectory_ = QString("%1/%2")
+                            .arg(QStandardPaths::writableLocation(QStandardPaths::CacheLocation))
+                            .arg(QString::fromUtf8(userId_.toUtf8().toHex()));
 }
 
 void

src/ChatPage.cc

@@ -194,6 +194,8 @@ ChatPage::logout()
         settings.remove("");
         settings.endGroup();
 
+        cache_->deleteData();
+
         // Clear the environment.
         room_list_->clear();
         view_manager_->clearAll();