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** Foundation and appearing in the file LICENSE.GPL included in the
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#include "qdnslookup_p.h"

#include <qurl.h>
#include <qdebug.h>

#include <wrl.h>
#include <windows.foundation.h>
#include <windows.foundation.collections.h>
#include <windows.networking.h>
#include <windows.networking.sockets.h>

using namespace Microsoft::WRL;
using namespace Microsoft::WRL::Wrappers;
using namespace ABI::Windows::Foundation;
using namespace ABI::Windows::Foundation::Collections;
using namespace ABI::Windows::Networking;
using namespace ABI::Windows::Networking::Connectivity;
using namespace ABI::Windows::Networking::Sockets;

QT_BEGIN_NAMESPACE

void QDnsLookupRunnable::query(const int requestType, const QByteArray &requestName, const QHostAddress &nameserver, QDnsLookupReply *reply)
{
    // TODO: Add nameserver support for winRT
    if (!nameserver.isNull())
        qWarning() << "Ignoring nameserver as its currently not supported on WinRT";

    // TODO: is there any way to do "proper" dns lookup?
    if (requestType != QDnsLookup::A && requestType != QDnsLookup::AAAA
            && requestType != QDnsLookup::ANY) {
        reply->error = QDnsLookup::InvalidRequestError;
        reply->errorString = QLatin1String("WinRT only supports IPv4 and IPv6 requests");
        return;
    }

    QString aceHostname = QUrl::fromAce(requestName);
    if (aceHostname.isEmpty()) {
        reply->error = QDnsLookup::InvalidRequestError;
        reply->errorString = requestName.isEmpty() ? tr("No hostname given") : tr("Invalid hostname");
        return;
    }

    IHostNameFactory *hostnameFactory;

    HStringReference classId(RuntimeClass_Windows_Networking_HostName);
    if (FAILED(GetActivationFactory(classId.Get(), &hostnameFactory))) {
        reply->error = QDnsLookup::ResolverError;
        reply->errorString = QLatin1String("Could not obtain hostname factory");
        return;
    }
    IHostName *host;
    HStringReference hostNameRef((const wchar_t*)aceHostname.utf16());
    hostnameFactory->CreateHostName(hostNameRef.Get(), &host);
    hostnameFactory->Release();

    IDatagramSocketStatics *datagramSocketStatics;
    GetActivationFactory(HString::MakeReference(RuntimeClass_Windows_Networking_Sockets_DatagramSocket).Get(), &datagramSocketStatics);

    IAsyncOperation<IVectorView<EndpointPair*> *> *op;
    HSTRING proto;
    WindowsCreateString(L"0", 1, &proto);
    datagramSocketStatics->GetEndpointPairsAsync(host, proto, &op);
    datagramSocketStatics->Release();
    host->Release();

    IVectorView<EndpointPair*> *endpointPairs = 0;
    HRESULT hr = op->GetResults(&endpointPairs);
    int waitCount = 0;
    while (hr == E_ILLEGAL_METHOD_CALL) {
        WaitForSingleObjectEx(GetCurrentThread(), 50, FALSE);
        hr = op->GetResults(&endpointPairs);
        if (++waitCount > 1200) // Wait for 1 minute max
            return;
    }
    op->Release();

    if (!endpointPairs)
        return;

    unsigned int size;
    endpointPairs->get_Size(&size);
    for (unsigned int i = 0; i < size; ++i) {
        IEndpointPair *endpointpair;
        endpointPairs->GetAt(i, &endpointpair);
        IHostName *remoteHost;
        endpointpair->get_RemoteHostName(&remoteHost);
        endpointpair->Release();
        HostNameType type;
        remoteHost->get_Type(&type);
        if (type == HostNameType_Bluetooth || type == HostNameType_DomainName
                || (requestType != QDnsLookup::ANY
                && ((type == HostNameType_Ipv4 && requestType == QDnsLookup::AAAA)
                || (type == HostNameType_Ipv6 && requestType == QDnsLookup::A))))
            continue;

        HSTRING name;
        remoteHost->get_CanonicalName(&name);
        remoteHost->Release();
        UINT32 length;
        PCWSTR rawString = WindowsGetStringRawBuffer(name, &length);
        QDnsHostAddressRecord record;
        record.d->name = aceHostname;
        record.d->value = QHostAddress(QString::fromWCharArray(rawString, length));
        reply->hostAddressRecords.append(record);
    }
}

QT_END_NAMESPACE