protected IHttpResponse BadRequestError<T>(string viewName, string errorMessage, T model = null)
            where T: class
        {
            var errorViewModel = new ErrorViewModel { Message = errorMessage };
            var allContent = this.GetViewContent(viewName, model,  errorViewModel);
            this.PrepareHtmlResult(allContent);
            this.Response.StatusCode = HttpStatusCode.BadRequest;
            return this.Response;
        }

        protected IHttpResponse BadRequestError(string viewName, string errorMessage)

        {
            var errorViewModel = new ErrorViewModel { Message = errorMessage };
            var allContent = this.GetViewContent(viewName, errorViewModel);
            this.PrepareHtmlResult(allContent);
            this.Response.StatusCode = HttpStatusCode.BadRequest;
            return this.Response;
        }

        private string GetViewContent<T1>(string viewName, T1 model, ErrorViewModel errorViewModel = null)
            where T1: class
        {
            string errorContent = string.Empty;

            if (errorViewModel != null || model is ErrorViewModel)
            {
                var errorHtml = this.GetFileContent(ERROR_VIEW_NAME);
                errorContent = this.ViewEngine.GetHtml(ERROR_VIEW_NAME, errorHtml, errorViewModel, this.User);
            }

            var viewFileContent = this.GetFileContent(viewName);
            var content = this.ViewEngine.GetHtml(viewName, viewFileContent, model, this.User);
            content = string.Concat(errorContent, content);

            var layoutFileContent = this.GetFileContent(LAYOUT);
            var allContent = layoutFileContent.Replace(BODY_PLACEHOLDER, content);
            var layoutContent = this.ViewEngine.GetHtml(LAYOUT, allContent, model, this.User);
            return layoutContent;
        }

        private string GetFileContent(string viewName)
        {
            string fullPath = null;

            switch (viewName)
            {
                case ERROR_VIEW_NAME:
                    fullPath = $"{VIEWS_FOLDER_PATH}{ERROR_VIEW_PATH}{HTML_EXTENTION}";
                    break;
                case LAYOUT:
                    fullPath = $"{VIEWS_FOLDER_PATH}{LAYOUT}{HTML_EXTENTION}";
                    break;
                default:
                    var contentFolderName = this.GetType().Name.Replace(CONTROLLER_WORD, SLASH_SYMBOL);
                    fullPath = $"{VIEWS_FOLDER_PATH}{contentFolderName}{viewName}{HTML_EXTENTION}";
                    break;
            }

            return System.IO.File.ReadAllText(fullPath);
        }