date.h

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#ifndef __LIBCPROJECT_DATE__
#define __LIBCPROJECT_DATE__
 
#include <errno.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
 
#include "convert.h"
#include "mathematics.h"
#include "string.h"
#include "types.h"
 
#define SECONDS_PER_MINUTE 60
#define SECONDS_PER_HOUR (60 * SECONDS_PER_MINUTE)
#define SECONDS_PER_DAY (24 * SECONDS_PER_HOUR)
#define MILLISECONDS_PER_SECOND 1000
 
struct date {
  uint16_t year;
 
  uint8_t month;
 
  uint8_t day;
 
  uint8_t hours;
 
  uint8_t minutes;
 
  uint8_t seconds;
 
  uint16_t milliseconds;
 
  int8_t timezone_utc_offset;
};
 
struct date *date_copy(struct date *date_to_copy);
 
bool date_get_is_valid_year(uint16_t year);
 
bool date_get_is_valid_month(uint8_t month);
 
bool date_get_is_valid_day(uint8_t day);
 
bool date_get_is_valid_hours(uint8_t hours);
 
bool date_get_is_valid_minutes(uint8_t minutes);
 
bool date_get_is_valid_seconds(uint8_t seconds);
 
bool date_get_is_valid_milliseconds(uint16_t milliseconds);
 
bool date_get_is_valid_timezone_utc_offset(int8_t timezone_utc_offset);
 
bool date_get_is_valid(struct date *date);
 
string_t date_to_iso_string(struct date *date);
 
string_t date_to_iso_string_without_time(struct date *date);
 
struct date *date_from_iso_string(string_t iso_string);
 
uint8_t date_get_days_of_month(uint8_t month, uint16_t year);
 
bool date_get_is_leap_year(uint16_t year);
 
uint64_t date_convert_milliseconds_to_seconds(uint16_t milliseconds);
 
uint64_t date_convert_seconds_to_milliseconds(uint64_t seconds);
 
uint64_t date_convert_days_to_seconds(uint64_t days);
 
uint64_t date_convert_hms_to_seconds(uint8_t hours, uint8_t minutes, uint8_t seconds);
 
uint64_t date_to_total_seconds(struct date *date);
 
uint64_t date_duration_seconds_between_2_dates(struct date *date1, struct date *date2);
 
void date_add_hours(struct date *date, int64_t hours);
 
void date_add_days(struct date *date, int64_t days);
 
void date_to_utc(struct date *date);
 
struct date *date_get_now_utc();
 
struct date *date_get_now_local();
 
uint16_t date_get_age(struct date *birth_date, struct date *current_date);
 
#endif