#ifndef _Utils_H_
#define _Utils_H_

#include <vector>
#include <string>
#include <sstream>
#include <string.h>
#include <iomanip>
#include <functional>
#include <thread>

//#include "Crypto.h"

using namespace std;

class Utils
{
public:
	static string toStr(int v);
	static string toStr(float v, int precision = 2);
	static string toStr(double v, int precision = 2);

	static int toInt(const std::string& str);
	static float toFloat(const string& str);
	static double toDouble(const string& str);

	static int64_t hexbinToInt(const string& str, bool swap = false);

	static int hexstrToInt(const string& str);

	static string from_hex_text(string s);
	static string to_hex_text(string s, string d = " ");

	template<typename T>
	static void append_bytes(vector<unsigned char>& dest, const T& src, int len)
	{
		int start = static_cast<int>(dest.size());
		dest.resize(start + len);
		memcpy_s(&dest[start], len, &src, len);
	}

	static int64_t timeNow();
	static int64_t timeNowMS();
	static int64_t timeNowDate();
	static string timeNowStr(std::string fmt = "%Y-%m-%d %H:%M:%S");
	static string timeNowStrMS(std::string fmt = "%Y-%m-%d %H:%M:%S");
	static string timeStr(int64_t ts, std::string fmt = "%Y-%m-%d %H:%M:%S");

	static int64_t time(string dt="", int zone = 0);

	static string time_to_string(int64_t dt, std::string fmt="%Y-%m-%d %H:%M:%S");
	static bool time_string_to_tm(string dt, std::tm& t);



    std::string duration_str(int64_t t)
    {
        auto h = t / 3600;
        auto m = (t % 3600) / 60;
        auto s = (t % 3600) % 60;
        std::string str = std::to_string(s) + "秒";
        if (m > 0 || h > 0)
        {
            str = std::to_string(m) + "分" + str;
        }
        if (h > 0)
        {
            str = std::to_string(h) + "小时" + str;
        }
        return str;
    }

	static unsigned short crc16(unsigned char* data, unsigned int len);

	static string Utils::gbkToUtf8(string s);
	static string Utils::utf8ToGbk(string s);

	static void sleep_ms(int ms);

	static int random(int min, int max);

	static void split(string buf, string c, vector<string>& res);
};

class TimeTick
{
public:
	int64_t tickMS_ = 0;

	TimeTick()
	{
		tickMS_ = Utils::timeNowMS();
	}

	bool elapse(int64_t ms, bool reset = true)
	{
		auto tick_now = Utils::timeNowMS();
		bool res = tick_now - tickMS_ > ms;
		if (res && reset)
		{
			tickMS_ = tick_now;
		}
		return res;
	}

	void reset()
	{
		tickMS_ = Utils::timeNowMS();
	}
};

#endif // !!! _Utils_H_