using namespace System;
using namespace System::Xml;
using namespace System::Collections;
using namespace System::Runtime::InteropServices;
using namespace System::ServiceModel::Syndication;
using namespace System::Threading;

enum {
    DOWNLOADING,
    READY,
    ERROR
};
int currentStatus = ERROR;
char* newsText = nullptr;

ref class Work
{
public:
    static void doJob()
    {
  try
  {
   String ^url("http://www.interfax.ru/rss.asp");
   XmlReader ^reader = XmlReader::Create(url->ToString());
   SyndicationFeed ^feed = SyndicationFeed::Load(reader);
   IEnumerator ^enumerator = feed->Items->GetEnumerator();
   enumerator->MoveNext();
   Marshal::FreeHGlobal(IntPtr(newsText));
   IntPtr ^ptr;
   ptr = Marshal::StringToHGlobalAnsi(((SyndicationItem^)(enumerator->Current))->Title->Text);
   newsText = ((char*)ptr->ToPointer());
   currentStatus = READY;
  }
  catch(...)
  {
   currentStatus = ERROR;
  }
    }
};

extern "C"
{
    __declspec(dllexport) int __cdecl getStatus()
    {
  return currentStatus;
    }
    __declspec(dllexport) char* __cdecl getText()
    {
  if (currentStatus != READY)
   return "DO NOT CALL THIS UNTIL READY";
  return newsText;
    }
    __declspec(dllexport) void __cdecl startDownloading()
    {
  if (currentStatus == DOWNLOADING)
   return;
  currentStatus = DOWNLOADING;
  (gcnew Thread(gcnew ThreadStart(&Work::doJob)))->Start();
    }
}