using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Configuration;
using System.Web.Mvc;
using System.IO;
using System.Data;
using System.Text;
using System.Web.Mvc.Html;
using iTextSharp.text;
using iTextSharp.text.pdf;

namespace sbcLabSystem.Controllers
{
    public class HtmlViewRenderer
    {
        public string RenderViewToString(Controller controller, string viewName, object viewData)
        {
            var renderedView = new StringBuilder();
            using (var responseWriter = new StringWriter(renderedView))
            {
                var fakeResponse = new HttpResponse(responseWriter);
                var fakeContext = new HttpContext(HttpContext.Current.Request, fakeResponse);
                var fakeControllerContext = new ControllerContext(new HttpContextWrapper(fakeContext), controller.ControllerContext.RouteData, controller.ControllerContext.Controller);

                var oldContext = HttpContext.Current;
                HttpContext.Current = fakeContext;

                using (var viewPage = new ViewPage())
                {
                    var html = new HtmlHelper(CreateViewContext(responseWriter, fakeControllerContext), viewPage);
                    html.RenderPartial(viewName, viewData);
                    HttpContext.Current = oldContext;
                }
            }
            return renderedView.ToString();
        }

        private static ViewContext CreateViewContext(TextWriter responseWriter, ControllerContext fakeControllerContext)
        {
            return new ViewContext(fakeControllerContext, new FakeView(), new ViewDataDictionary(), new TempDataDictionary(), responseWriter);
        }
        public class FakeView : IView
        {
            public void Render(ViewContext viewContext, TextWriter writer)
            {
                throw new NotImplementedException();
            }

        }
    }
}