/*
 * Copyright (C) 2021 Sony Interactive Entertainment 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 USE(GRAPHICS_LAYER_WC)

#include "Connection.h"
#include "MessageReceiver.h"
#include "MessageSender.h"
#include "WCLayerTreeHostIdentifier.h"
#include "WCSharedSceneContextHolder.h"
#include <WebCore/ProcessIdentifier.h>
#include <wtf/RefCounted.h>
#include <wtf/TZoneMalloc.h>

namespace IPC {
class StreamConnectionWorkQueue;
}

namespace WebKit {
class GPUConnectionToWebProcess;
class WCScene;
struct UpdateInfo;
struct WCUpdateInfo;

class RemoteWCLayerTreeHost : public IPC::MessageReceiver, private IPC::MessageSender, public RefCounted<RemoteWCLayerTreeHost> {
    WTF_MAKE_TZONE_ALLOCATED(RemoteWCLayerTreeHost);
public:
    static Ref<RemoteWCLayerTreeHost> create(GPUConnectionToWebProcess&, WebKit::WCLayerTreeHostIdentifier, uint64_t nativeWindow, bool usesOffscreenRendering);
    ~RemoteWCLayerTreeHost();
    // message handlers
    void update(WCUpdateInfo&&, CompletionHandler<void(std::optional<WebKit::UpdateInfo>)>&&);

    void ref() const final { RefCounted::ref(); }
    void deref() const final { RefCounted::deref(); }

private:
    RemoteWCLayerTreeHost(GPUConnectionToWebProcess&, WebKit::WCLayerTreeHostIdentifier, uint64_t nativeWindow, bool usesOffscreenRendering);

    // IPC::MessageReceiver
    void didReceiveMessage(IPC::Connection&, IPC::Decoder&) override;
    // IPC::MessageSender
    IPC::Connection* messageSenderConnection() const override;
    uint64_t messageSenderDestinationID() const override;

    WeakPtr<GPUConnectionToWebProcess> m_connectionToWebProcess;
    WebCore::ProcessIdentifier m_webProcessIdentifier;
    WCLayerTreeHostIdentifier m_identifier;
    RefPtr<WCSharedSceneContextHolder::Holder> m_sharedSceneContextHolder;
    std::unique_ptr<WCScene> m_scene;
};

IPC::StreamConnectionWorkQueue& remoteGraphicsStreamWorkQueue();

} // namespace WebKit

#endif // USE(GRAPHICS_LAYER_WC)
