/**
 * Copyright (c) 2025 Huawei Technologies Co., Ltd.
 * This program is free software, you can redistribute it and/or modify it under the terms and conditions of
 * CANN Open Software License Agreement Version 2.0 (the "License").
 * Please refer to the License for details. You may not use this file except in compliance with the License.
 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED,
 * INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE.
 * See LICENSE in the root of the software repository for the full text of the License.
 */

#ifndef QUEUE_STATE_MANAGER_H
#define QUEUE_STATE_MANAGER_H

#include <list>
#include <map>
#include <string>
#include "fsm/state_define.h"
#include "fsm/state_base.h"

namespace dgw {
class StateManager {
public:
    explicit StateManager() = default;

    ~StateManager() = default;

    StateManager(const StateManager&) = delete;
    StateManager(const StateManager&&) = delete;
    StateManager& operator=(const StateManager&) = delete;
    StateManager& operator=(StateManager&&) = delete;

public:
    static StateManager& Instance();

    void RegisterState(
        const FsmState id, const EntityType eType, const StateBase* const state, const char_t* const idDesc,
        const char_t* const typeDesc);
    StateBase* GetState(const FsmState id, const EntityType eType) const;
    const std::string& GetStateDesc(const FsmState id, const EntityType eType);
    const std::string& GetTypeDesc(const EntityType eType);

private:
    StateBase* state_[static_cast<size_t>(EntityType::ENTITY_INVALID)]
                     [static_cast<size_t>(FsmState::FSM_INVALID_STATE)] = {{nullptr}};
    std::string stateDesc_[static_cast<size_t>(EntityType::ENTITY_INVALID)]
                          [static_cast<size_t>(FsmState::FSM_INVALID_STATE)] = {{""}};
    std::string typeDesc_[static_cast<size_t>(EntityType::ENTITY_INVALID)] = {""};
};

// state registerar
class StateRegisterar {
public:
    StateRegisterar(
        const FsmState id, const EntityType eType, const StateBase* const state, const char_t* const idDesc,
        const char_t* const typeDesc) noexcept
    {
        StateManager::Instance().RegisterState(id, eType, state, idDesc, typeDesc);
    }

    ~StateRegisterar() = default;
    StateRegisterar(const StateRegisterar&) = delete;
    StateRegisterar(const StateRegisterar&&) = delete;
    StateRegisterar& operator=(const StateRegisterar&) = delete;
    StateRegisterar& operator=(StateRegisterar&&) = delete;
};

#define REGISTER_STATE(id, type, state)                         \
    static const state g_##state##_##type;                      \
    static const StateRegisterar g_##state##_##type##_Register( \
        FsmState::id, EntityType::type, &g_##state##_##type, #id, #type)
} // namespace dgw

#endif