// Consultalocaltime.cpp : This file contains the 'main' function. Program execution begins and ends there.
//

#include <iostream>
#include <string>

#include <stdio.h>
#include <time.h>

std::string myasctime(const struct tm *timeptr);

int main()
{
	std::cout << "Consulta sobre localtime y asctime" << std::endl;

	time_t rawtime;
	time(&rawtime);

	struct tm timeinfo;

	// from https://en.cppreference.com/w/c/chrono/localtime
	// from https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/localtime-s-localtime32-s-localtime64-s?view=vs-2019
	localtime_s(&timeinfo, &rawtime);

	// from https://en.cppreference.com/w/c/chrono/asctime
	// from https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/asctime-s-wasctime-s?view=vs-2019
	char str[26];
	asctime_s(str, sizeof str, &timeinfo);

	printf ( "The current date/time is: %s", str);

	// using special function
	std::cout << "The current date/time is: " << myasctime(&timeinfo) << std::endl;

	return 0;
}

std::string myasctime(const struct tm *timeptr)
{
	static const std::string wday_name[] = {
			"Dom", "Lun", "Mar", "Mie", "Jue", "Vie", "Sab"
	};
	static const std::string mon_name[] = {
			"Ene", "Feb", "Mar", "Abr", "May", "Jun",
			"Jul", "Ago", "Sep", "Oct", "Nov", "Dic"
	};

	std::string out;
	out = wday_name[timeptr->tm_wday] + " " \
		+ mon_name[timeptr->tm_mon] + " " \
		+ std::to_string(timeptr->tm_mday) + " " \
		+ std::to_string(timeptr->tm_hour) + ":" \
		+ std::to_string(timeptr->tm_min) + ":" \
		+ std::to_string(timeptr->tm_sec) + ":" \
		+ std::to_string(1900 + timeptr->tm_year);

	return out;
}