// Copyright 2019 The Dawn Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include "dawn_wire/server/Server.h"

#include <memory>

namespace dawn_wire { namespace server {

    void Server::OnFenceCompletedValueUpdated(WGPUFenceCompletionStatus status,
                                              FenceCompletionUserdata* data) {
        if (status != WGPUFenceCompletionStatus_Success) {
            return;
        }

        ReturnFenceUpdateCompletedValueCmd cmd;
        cmd.fence = data->fence;
        cmd.value = data->value;

        SerializeCommand(cmd);
    }

    bool Server::DoFenceOnCompletion(ObjectId fenceId, uint64_t value, uint64_t requestSerial) {
        // The null object isn't valid as `self`
        if (fenceId == 0) {
            return false;
        }

        auto* fence = FenceObjects().Get(fenceId);
        if (fence == nullptr) {
            return false;
        }

        auto userdata = MakeUserdata<FenceOnCompletionUserdata>();
        userdata->fence = ObjectHandle{fenceId, fence->generation};
        userdata->requestSerial = requestSerial;

        mProcs.fenceOnCompletion(
            fence->handle, value,
            ForwardToServer<decltype(
                &Server::OnFenceOnCompletion)>::Func<&Server::OnFenceOnCompletion>(),
            userdata.release());
        return true;
    }

    void Server::OnFenceOnCompletion(WGPUFenceCompletionStatus status,
                                     FenceOnCompletionUserdata* data) {
        ReturnFenceOnCompletionCallbackCmd cmd;
        cmd.fence = data->fence;
        cmd.requestSerial = data->requestSerial;
        cmd.status = status;

        SerializeCommand(cmd);
    }

}}  // namespace dawn_wire::server