/**
  * Receive uploaded files (ajax/blueimp)
  */
 public function receivefileAction()
 {
     $ret = Zend_Registry::get('Zend_Translate')->translate('Server-side error');
     if ($this->getRequest()->isPost()) {
         $Images = new Application_Model_Images();
         $adapter = new Zend_File_Transfer_Adapter_Http();
         $adapter->addValidator('Extension', false, 'jpg,jpeg,png,gif');
         $files = $adapter->getFileInfo();
         $receive_to = $this->getRequest()->getParam('to');
         $form_unique_key = (int) $this->getRequest()->getParam('form_unique_key');
         $current_user_id = Zend_Auth::getInstance()->getIdentity()->id;
         $current_user_role = Zend_Auth::getInstance()->getIdentity()->role;
         foreach ($files as $file => $info) {
             // file uploaded & is valid
             if (!$adapter->isUploaded($file)) {
                 continue;
             }
             if (!$adapter->isValid($file)) {
                 continue;
             }
             // check max file size
             if ($info['size'] > Zend_Registry::get('config')->get('max_file_upload_size')) {
                 continue;
             }
             $filename = $adapter->getFileName($file);
             $extension = strtolower(pathinfo($filename, PATHINFO_EXTENSION));
             $fileinfo = $adapter->getFileInfo($file);
             $filesize = $fileinfo[$file]['size'];
             $profilename = Zend_Auth::getInstance()->getIdentity()->name;
             $randomstring = Application_Plugin_Common::getRandomString();
             // generate tmp filename
             $tmp_filename = 'post_' . $profilename . '_' . $form_unique_key . '_' . $randomstring . '.' . $extension;
             $tmp_filename_full = TMP_PATH . '/' . $tmp_filename;
             // set to rename uploaded file upon receiving to tmp folder
             $adapter->setDestination(TMP_PATH);
             $adapter->addFilter('rename', $tmp_filename_full);
             // receive the files into the tmp directory, must have
             $adapter->receive($file);
             // check if valid image
             if (!Application_Plugin_ImageLib::isValidImage($tmp_filename_full)) {
                 unlink($tmp_filename_full);
                 continue;
             }
             // check storage limits
             $max_files_per_user = 0 + Zend_Registry::get('config')->get('max_files_per_user');
             $max_storage_per_user = 0 + Zend_Registry::get('config')->get('max_storage_per_user');
             if ($current_user_role == 'user' && ($max_files_per_user || $max_storage_per_user)) {
                 $storage_usage = $Images->getStorageUsage($current_user_id);
                 if ($max_files_per_user && $storage_usage['image_count'] > $max_files_per_user || $max_storage_per_user && $storage_usage['image_size'] > $max_storage_per_user) {
                     $ret = Zend_Registry::get('Zend_Translate')->translate('Storage limits reached');
                     unlink($tmp_filename_full);
                     continue;
                 }
             }
             if ($receive_to !== 'tmp') {
                 // receive to album, check if user is an album owner
                 if ($receive_to > 0) {
                     $Albums = new Application_Model_Albums();
                     $album = $Albums->getAlbum($receive_to);
                     // exit on wrong album
                     if (!$album || $album['user_id'] != $current_user_id) {
                         $this->_helper->json(false);
                         return;
                     }
                 }
                 $Storage = new Application_Model_Storage();
                 $StorageAdapter = $Storage->getAdapter();
                 $original_filename = '';
                 if (Zend_Registry::get('config')->get('resample_images')) {
                     Application_Plugin_ImageLib::resample(TMP_PATH . '/' . $tmp_filename, TMP_PATH . '/thumb_' . $tmp_filename);
                     $image_filename = $StorageAdapter->moveFileToStorage('thumb_' . $tmp_filename, 'posts');
                     if (Zend_Registry::get('config')->get('keep_original')) {
                         $original_filename = $StorageAdapter->moveFileToStorage($tmp_filename, 'posts');
                     } else {
                         $original_filename = '';
                         unlink(TMP_PATH . '/' . $tmp_filename);
                         // clean up
                     }
                 } else {
                     $image_filename = $StorageAdapter->moveFileToStorage($tmp_filename, 'posts');
                 }
                 if ($image_filename) {
                     $ret = $Images->addImage($image_filename, $filesize, $current_user_id, $current_user_id, 0, $receive_to, $original_filename);
                 }
             }
             $ret = true;
         }
     }
     $this->_helper->json($ret);
 }