common.h

#pragma once

#include <iostream>
#include <string>
#include "Poco/Mutex.h"

class Common
{
public:
    static Common* getInstance();
    std::string FnFormatDateYYMMDD();
    std::string FnFormatDateYYMMDD_HHMMSS();
    std::string FnCurrentFormatDateYYYY_MM_DD_HH_MM_SS();
    std::string FnConverImageToBase64String(const std::string& imagePath);
    void FnRetrieveIpAddressFromNetInterface();
    std::string FnGetIpAddress();

    Common(Common& common) = delete;

    void operator=(const Common&) = delete;

private:
    static Common* common_;
    static Poco::Mutex singletonCommonMutex_;
    Poco::Mutex commonMutex_;
    std::string ipAddr_;
    Common();
};