/*
 * Copyright (C) 2025 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 ENABLE(MEDIA_STREAM)

#include <WebCore/ExceptionOr.h>
#include <WebCore/MediaStreamTrack.h>
#include <wtf/TZoneMalloc.h>

namespace WebCore {

struct MediaStreamTrackHandleDataHolder {
    WTF_MAKE_TZONE_ALLOCATED(MediaStreamTrackHandleDataHolder);
public:
    ScriptExecutionContextIdentifier contextIdentifier;
    WeakPtr<MediaStreamTrack, WeakPtrImplWithEventTargetData> track;
    Ref<MediaStreamTrack::Keeper> trackKeeper;
    Ref<MediaStreamTrackPrivateSourceObserver> trackSourceObserver;
};

class MediaStreamTrackHandle : public RefCounted<MediaStreamTrackHandle> {
public:
    ~MediaStreamTrackHandle();

    using DataHolder = MediaStreamTrackHandleDataHolder;

    static ExceptionOr<Ref<MediaStreamTrackHandle>> create(MediaStreamTrack&);
    static Ref<MediaStreamTrackHandle> create(DataHolder&&);
    static Ref<MediaStreamTrackHandle> create(ScriptExecutionContextIdentifier, WeakPtr<MediaStreamTrack, WeakPtrImplWithEventTargetData>&&, Ref<MediaStreamTrack::Keeper>&&, Ref<MediaStreamTrackPrivateSourceObserver>&&);

    bool isDetached() const { return m_isDetached; }
    UniqueRef<DataHolder> NODELETE detach();

    ScriptExecutionContextIdentifier trackContextIdentifier() const { return m_contextIdentifier; }
    WeakPtr<MediaStreamTrack, WeakPtrImplWithEventTargetData> track() const { return m_track; }
    MediaStreamTrackPrivateSourceObserver& trackSourceObserver() const { return m_trackSourceObserver; }

    const MediaStreamTrack::Keeper& trackKeeper() const { return m_trackKeeper.get(); }

private:
    MediaStreamTrackHandle(ScriptExecutionContextIdentifier, WeakPtr<MediaStreamTrack, WeakPtrImplWithEventTargetData>&&, Ref<MediaStreamTrack::Keeper>&&, Ref<MediaStreamTrackPrivateSourceObserver>&&);

    bool m_isDetached { false };
    const ScriptExecutionContextIdentifier m_contextIdentifier;
    const WeakPtr<MediaStreamTrack, WeakPtrImplWithEventTargetData> m_track;
    const Ref<MediaStreamTrack::Keeper> m_trackKeeper;
    const Ref<MediaStreamTrackPrivateSourceObserver> m_trackSourceObserver;
};

} // namespace WebCore

#endif // ENABLE(MEDIA_STREAM)
