/*
 * Copyright (c) 2022 Huawei Device Co., Ltd.
 * 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.
 */

#ifndef COMMUNICATIONNETMANAGER_BASE_EVENT_MANAGER_H
#define COMMUNICATIONNETMANAGER_BASE_EVENT_MANAGER_H

#include <atomic>
#include <list>
#include <mutex>

#include <uv.h>

#include "event_listener.h"

namespace OHOS {
namespace NetManagerStandard {
class EventManager {
public:
    EventManager();

    void AddListener(napi_env env, const std::string &type, napi_value callback, bool once, bool asyncCallback);
    void DeleteListener(const std::string &type, napi_value callback);
    void Emit(const std::string &type, const std::pair<napi_value, napi_value> &argv);
    void SetData(void *data);
    void EmitByUv(const std::string &type, void *data, void(handler)(uv_work_t *, int status));
    bool HasEventListener(const std::string &type);
    void DeleteListener(const std::string &type);
    void DeleteAllListener();
    [[nodiscard]] void *GetData();

    bool IsListenerListEmpty() const
    {
        return listeners_.empty();
    }

    size_t GetListenerListNum() const
    {
        return listeners_.size();
    }
    bool IsValid() const;
    void SetInvalid();

    napi_ref GetRef() const;
    void SetRef(napi_ref ref);

private:
    std::mutex mutexForListenersAndEmitByUv_;
    std::mutex mutexForEmitAndEmitByUv_;
    std::mutex mutex_;
    std::list<EventListener> listeners_;
    void *data_ = nullptr;
    std::atomic_bool isValid_;
    napi_ref ref_ = nullptr;
};

struct UvWorkWrapper {
    UvWorkWrapper() = delete;
    explicit UvWorkWrapper(void *theData, napi_env theEnv, std::string eventType, EventManager *eventManager);
    void *data;
    napi_env env;
    std::string type;
    EventManager *manager;
};
} // namespace NetManagerStandard
} // namespace OHOS
#endif // COMMUNICATIONNETMANAGER_BASE_EVENT_MANAGER_H