#if !NET8
using System.Web;
using System.Web.Mvc;
using System.Web.Mvc.Html;
using System.Web.Security;
#endif

#if NET8
using Microsoft.AspNetCore.Mvc;
#endif

#if !NET8
using System;
using System.IO;
using System.Collections.Generic;
using System.Net;
using System.Net.Http;
using System.Security.Claims;
using System.Threading.Tasks;
#endif

using System.Text;

namespace Fab2ApprovalSystem.PdfGenerator;

public class HtmlViewRenderer {

    public string RenderViewToString(Controller controller, string viewName, object viewData) {
        StringBuilder renderedView = new();
#if !NET8
        using (StringWriter responseWriter = new(renderedView)) {
            HttpResponse fakeResponse = new(responseWriter);
            HttpContext fakeContext = new(HttpContext.Current.Request, fakeResponse);
            ControllerContext fakeControllerContext = new(new HttpContextWrapper(fakeContext), controller.ControllerContext.RouteData, controller.ControllerContext.Controller);

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

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

        return renderedView.ToString();
    }

#if !NET8

    private static ViewContext CreateViewContext(TextWriter responseWriter, ControllerContext fakeControllerContext) {
        return new ViewContext(fakeControllerContext, new FakeView(), new ViewDataDictionary(), new TempDataDictionary(), responseWriter);
    }

#endif

}