// // ******************************************************************
// //       /\ /|       @File         loger.cc
// //       \ V/        @Brief
// //       | "")       @Author        lijinwen, ghz005@uni-trend.com.cn
// //       /  |        @Creation      2024-05-16
// //      /  \\        @Modified      2024-06-24
// //    *(__\_\
// // ******************************************************************

#include "loger.h"

namespace Protocol
{
    std::mutex Loger::instanceMutex_ = std::mutex();
    Loger Loger::instance_ = Loger();

    Loger::Loger()
    {
        logPath_ = "./DecoderLogs/";
        if (!Fs::exists(logPath_))
        {
            Fs::create_directories(logPath_);
        }
        // Generate the log file name with the current date.
        time_t now = std::chrono::system_clock::to_time_t(std::chrono::system_clock::now());
        tm now_tm;
        localtime_s(&now_tm, &now); // 使用线程安全的localtime_s
        std::stringstream log_file_name_stream;
        log_file_name_stream << logPath_ << "2024." << std::put_time(&now_tm, "%m.%d") << ".log";
        logFileName_ = log_file_name_stream.str();

        logFile_.open(logFileName_, std::ios::out | std::ios::app);
    }

    void Loger::Log(const std::string& message)
    {
        std::lock_guard<std::mutex> lock(instanceMutex_); // 锁定以保证线程安全
        const time_t now = std::chrono::system_clock::to_time_t(std::chrono::system_clock::now());
        tm now_tm;
        localtime_s(&now_tm, &now); // 使用线程安全的localtime_s

        std::stringstream time_stream;
        time_stream << std::put_time(&now_tm, "%Y-%m-%d %X");

        std::ofstream& logFile = instance_.logFile_;
        if (logFile.is_open())
        {
            logFile << "[" << time_stream.str() << "] - " << message << std::endl;
            logFile.flush(); // 确保立即写入文件
        }
    }

    Loger::~Loger()
    {
        if (logFile_.is_open())
        {
            logFile_.close();
        }
    }

    void WriteLog(const LogLevel level, const char* format, ...)
    {
        if (Loger::logLevel != LogLevel::All
            && (Loger::logLevel == LogLevel::Close || level > Loger::logLevel))
        {
            return;
        }

        va_list args;
        va_start(args, format);

        char buffer[1024];
        vsnprintf(buffer, sizeof(buffer), format, args);
        va_end(args);

        Loger::Log(buffer);
    }
}