#include "date_time_handling.h"
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <string.h>

void get_date(char buffer[]) {
	// add 1 because strlen does not include the null character
	size_t buffer_size = strlen(buffer) + 1;
	time_t my_unix_ts = time(NULL);
	struct tm* my_tm_local = localtime(&my_unix_ts);
	strftime(buffer, buffer_size, "%Y%m%dT%H%M%S", my_tm_local);
}

// 20230823T194138 -> 2023-08-23 19:41:38
void pretty_print_date_time(char date_time[]) {
	char *date = strtok(date_time, "T");
	char *time = strtok(NULL, "T");
	if (date == NULL) {
		printf ("\nError: date points to NULL!\n");
		exit(1);
	}
	printf ("%c%c%c%c-", date[0], date[1], date[2], date[3]);
	printf ("%c%c-", date[4], date[5]);
	printf ("%c%c", date[6], date[7]);
	
	if (time != NULL) {
		printf (" %c%c:", time[0], time[1]);
		printf ("%c%c:", time[2], time[3]);
		printf ("%c%c", time[4], time[5]);
	}
}

void print_end_date(char end_date[]) {
	// end_date is all day event
	if (strlen(end_date) == 8)
		return;

	strtok(end_date, "T");
	char *time = strtok(NULL, "T");

	printf (" - %c%c:", time[0], time[1]);
	printf ("%c%c:", time[2], time[3]);
	printf ("%c%c", time[4], time[5]);
}