#pragma once
#include <chrono>
class TimeUtil {

public:
	// »ñÈ¡µ±Ç°Ê±¼ä´Á
	static long getNowTimeStamp() {
		auto now = std::chrono::system_clock::now();
		// ת»»ÎªÊ±¼ä´Á
		auto now_s = std::chrono::duration_cast<std::chrono::seconds>(now.time_since_epoch()).count();
		
		return now_s;
	}

	static string format(long timestamp, string format="%Y-%m-%d %H:%M:%S") {
		time_t rawtime = static_cast<time_t>(timestamp);

		// ʹÓÃlocaltimeº¯Êý½«time_tÀàÐÍת»»Îªstruct tm½á¹¹Ì壬»ñÈ¡±¾µØʱ¼ä
		struct tm* timeinfo;
		timeinfo = localtime(&rawtime);
	
		char buffer[80];
		strftime(buffer, sizeof(buffer), format.c_str(), timeinfo);
		// ½«charÊý×éת»»Îªstring
		return std::string(buffer);
	}

	static long timeStr2Seconds(string st) {
	 	int h = stoi(st.substr(0, 2));
		int m = stoi(st.substr(3, 2));
		int s = stoi(st.substr(6, 2));
		return h * 3600 + m * 60 + s;
	}


};