// Copyright 2021 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/client/ShaderModule.h"

#include "dawn_wire/client/Client.h"

namespace dawn_wire { namespace client {

    ShaderModule::~ShaderModule() {
        ClearAllCallbacks(WGPUCompilationInfoRequestStatus_Unknown);
    }

    void ShaderModule::GetCompilationInfo(WGPUCompilationInfoCallback callback, void* userdata) {
        if (client->IsDisconnected()) {
            callback(WGPUCompilationInfoRequestStatus_DeviceLost, nullptr, userdata);
            return;
        }

        uint64_t serial = mCompilationInfoRequests.Add({callback, userdata});

        ShaderModuleGetCompilationInfoCmd cmd;
        cmd.shaderModuleId = this->id;
        cmd.requestSerial = serial;

        client->SerializeCommand(cmd);
    }

    bool ShaderModule::GetCompilationInfoCallback(uint64_t requestSerial,
                                                  WGPUCompilationInfoRequestStatus status,
                                                  const WGPUCompilationInfo* info) {
        CompilationInfoRequest request;
        if (!mCompilationInfoRequests.Acquire(requestSerial, &request)) {
            return false;
        }

        request.callback(status, info, request.userdata);
        return true;
    }

    void ShaderModule::CancelCallbacksForDisconnect() {
        ClearAllCallbacks(WGPUCompilationInfoRequestStatus_DeviceLost);
    }

    void ShaderModule::ClearAllCallbacks(WGPUCompilationInfoRequestStatus status) {
        mCompilationInfoRequests.CloseAll([status](CompilationInfoRequest* request) {
            if (request->callback != nullptr) {
                request->callback(status, nullptr, request->userdata);
            }
        });
    }

}}  // namespace dawn_wire::client