/*
 * Copyright (C) 2021 Apple Inc.
 *
 * 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 ENABLE(WEB_RTC)

#include "RTCSctpTransportState.h"
#include <wtf/WeakPtr.h>

namespace WebCore {

class RTCDtlsTransportBackend;

class RTCSctpTransportBackend {
public:
    virtual ~RTCSctpTransportBackend() = default;

    virtual const void* backend() const = 0;
    virtual UniqueRef<RTCDtlsTransportBackend> dtlsTransportBackend() = 0;

    class Client : public CanMakeWeakPtr<Client> {
    public:
        virtual ~Client() = default;
        virtual void onStateChanged(RTCSctpTransportState, std::optional<double>, std::optional<unsigned short>) = 0;
    };
    virtual void registerClient(Client&) = 0;
    virtual void unregisterClient() = 0;
};

inline bool operator==(const RTCSctpTransportBackend& a, const RTCSctpTransportBackend& b)
{
    return a.backend() == b.backend();
}

} // namespace WebCore

#endif // ENABLE(WEB_RTC)