// matth-x/ESP8266-OCPP

// Copyright Matthias Akstaller 2019 - 2021

// MIT License

#ifndef TIMEHELPER_H

#define TIMEHELPER_H

#include <TimeLib.h>

//Infinity begins in the end of year 2035

//... it is close to the "year 2038 problem" that occurs if signed longs were used for time_t but has some space

//left to prevent overflows if something is added to INFINITY

//As long as it is garantueed that time_t uses unsigned longs, CalendarYrToTm(2036) could be raised to CalenderYrToTm(2100)

#define INFINITY_THLD ((time_t) (((time_t) SECS_PER_YEAR) * ((time_t) CalendarYrToTm(2036))))

#define INFINITY_STRING "2036-01-01T00:00:00.000Z"

#define JSONDATE_LENGTH 24 //JSON Date

//#define JSONDATE_LENGTH 32 //ISO 8601

namespace ArduinoOcpp {

bool setTimeFromJsonDateString(const char* jsonDateString);

bool getJsonDateStringFromSystemTime(char* jsonDateString, int bufflength);

bool getJsonDateStringFromGivenTime(char* jsonDateString, int bufflength, time_t t);

bool getTimeFromJsonDateString(const char* jsonDateString, time_t *result);

time_t minimum(time_t t1, time_t t2);

void printTime(time_t t);

} //end namespace ArduinoOcpp

#endif