/**
 * Copyright (c) Huawei Technologies Co., Ltd. 2025. All rights reserved.
 * MindIE is licensed under Mulan PSL v2.
 * You can use this software according to the terms and conditions of the Mulan PSL v2.
 * You may obtain a copy of Mulan PSL v2 at:
 *          http://license.coscl.org.cn/MulanPSL2
 * 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 FIT FOR A PARTICULAR PURPOSE.
 * See the Mulan PSL v2 for more details.
 */

#ifndef MINDIE_LLM_LOG_TIMER_H
#define MINDIE_LLM_LOG_TIMER_H

#include <atomic>
#include <iostream>
#include <memory>
#include <mutex>
#include <nlohmann/json.hpp>
#include <thread>

namespace mindie_llm {
class LogLevelDynamicHandler {
   public:
    static LogLevelDynamicHandler& GetInstance();
    static void Init(size_t intervalMs = 5000, bool needWriteToFile = false);
    static void Stop();
    LogLevelDynamicHandler(const LogLevelDynamicHandler&) = delete;
    LogLevelDynamicHandler& operator=(const LogLevelDynamicHandler&) = delete;
    LogLevelDynamicHandler(LogLevelDynamicHandler&&) = delete;
    LogLevelDynamicHandler& operator=(LogLevelDynamicHandler&&) = delete;

   private:
    LogLevelDynamicHandler();
    ~LogLevelDynamicHandler();
    void GetAndSetLogConfig();
    void InsertLogConfigToFile();
    void ModifyLogConfigByKey(const std::string& key, const std::string& value, bool isNumber);
    void ClearDynamicLogConfigs();
    bool CheckDynamicLogLevelChanged(const nlohmann::json& dynamicLogLevel);
    bool CheckValidHoursChanged(const nlohmann::json& dynamicLogLevelValidHours);
    void UpdateDynamicLogParam(const bool sameDynamicLogLevel, const bool sameValidHours);
    void UpdateDynamicLogParamToFile();
    bool IsCurrentTimeWithinValidRange(const std::string& validTimeStr, int validHours) const;
    bool CheckAndAutoCorrectInvalidParam(const nlohmann::json& logConfigJson);
    bool CheckLogLevelRefreshConfig(const std::string& jsonPath, nlohmann::json& inputJsonData);
    bool ReadLogConfig(const std::string& jsonPath, std::string& baseDir, nlohmann::json& inputJsonData) const;
    bool GetHomePath(std::string& outHomePath);
    bool GetBinaryPath(std::string& outPath);
    bool CanonicalPath(std::string& path) const;
    static bool IsGreaterThanNow(const std::string& other);
    const std::string GetMindieLlmHomePath();

   private:
    std::thread logLevelDynamicThread_;
    std::atomic<bool> isRunning_{false};
    size_t intervalMs_ = 0;
    bool needWriteToFile_ = false;
    std::string jsonPath_;
    bool hasSetDynamicLog_ = false;
    std::string lastLogLevel_;
    int lastValidHours_ = 2;
    std::string lastValidTime_;
    std::string currentLevel_;
    int currentValidHours_ = 2;
    std::string currentValidTime_;
    std::string defaultLogLevel_;  // default value is from the environment variable
    std::string miesInstallPath_;
};

}  // namespace mindie_llm

#endif  // MINDIE_LLM_LOG_TIMER_H