/*
 * Copyright (C) 2017 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

#pragma once

#if USE(LIBWEBRTC)

#include "RTCNetwork.h"
#include <CFNetwork/CFHost.h>
#include <wtf/CompletionHandler.h>
#include <wtf/text/WTFString.h>

namespace WebKit {

class NetworkRTCResolver {
public:
    enum class Error { Unknown, Cancelled };

    using AddressesOrError = Expected<std::reference_wrapper<const Vector<RTCNetwork::IPAddress>>, Error>;
    using CompletionHandler = WTF::CompletionHandler<void(AddressesOrError&&)>;

    explicit NetworkRTCResolver(CompletionHandler&&);
    ~NetworkRTCResolver();

    void start(const String& address);
    void stop();

    void completed(const Vector<RTCNetwork::IPAddress>&);

private:
    CompletionHandler m_completionHandler;
    RetainPtr<CFHostRef> m_host;
};

} // namespace WebKit

#endif // USE(LIBWEBRTC)
