public IHttpActionResult Get()
        {
            IList <FileDTO> fileList;

            if (_security.IsCurrentUserHasRole(Roles.Admin))
            {
                fileList = Mapper.Map <IList <FileDTO> >(_fileService.AllFilesList());
            }
            else
            {
                string userId;

                using (var uow = ObjectFactory.GetInstance <IUnitOfWork>())
                {
                    userId = _security.GetCurrentAccount(uow).Id;
                }

                fileList = Mapper.Map <IList <FileDTO> >(_fileService.FilesList(userId));
            }

            // fills Tags property for each fileDTO to display in the Tags column
            // example: { "key1" : "value1" }, {"key2", "value2} ...
            foreach (var file in fileList)
            {
                var  result      = String.Empty;
                var  tags        = _tagService.GetList(file.Id);
                bool isFirstItem = true;
                foreach (var tag in tags)
                {
                    if (isFirstItem)
                    {
                        isFirstItem = false;
                    }
                    else
                    {
                        result += ", ";
                    }
                    result += "{\"" + tag.Key + "\" : \"" + tag.Value + "\"}";
                }
                file.Tags = result;
            }

            return(Ok(fileList));
        }