/*
 * Copyright 2015 (c) Anna Schumaker.
 */
#include <core/string.h>

#define O_SECONDS (1)
#define O_MINUTES (60)
#define O_HOURS   (60 * O_MINUTES)
#define O_DAYS    (24 * O_HOURS)

static unsigned int factor[4] = { O_DAYS, O_HOURS, O_MINUTES, O_SECONDS };
static const char   *field[4] = { "day",  "hour",  "minute",  "second"  };


gchar *string_sec2str(unsigned int sec)
{
	return g_strdup_printf("%u:%02u", sec / 60, sec % 60);
}

gchar *string_sec2str_long(unsigned int sec)
{
	gchar *tmp;
	unsigned int val;
	gchar *res = g_strdup("");

	for (unsigned int i = 0; i < 4; i++) {
		val  = sec / factor[i];
		sec %= factor[i];
		if (val == 0)
			continue;

		tmp = g_strdup_printf("%s%u %s%s%s", res, val, field[i],
					(val > 1) ? "s" : "",
					(sec > 0) ? ", " : "");
		g_free(res);
		res = tmp;
	}

	return res;
}

static void _drop_special(gchar *str)
{
	unsigned int i, j = 0;

	for (i = 0; i < strlen(str); i++) {
		if (g_ascii_isalnum(str[i]))
			str[j++] = str[i];
		else if ((j > 0) && (str[i] == ' ') && (str[j - 1] != ' '))
			str[j++] = str[i];
	}

	while (j < i)
		str[j++] = '\0';
}

gchar *string_lowercase(const gchar *str)
{
	gchar *res = g_ascii_strdown(str, -1);

	g_strdelimit(res, "\\/,;()_-~+\"	", ' ');
	_drop_special(res);
	g_strstrip(res);

	return res;
}

int string_compare(const gchar *lhs, const gchar *rhs)
{
	if (strlen(lhs) == 0) {
		if (strlen(rhs) == 0)
			return 0;
		return 1;
	}
	if (strlen(rhs) == 0)
		return -1;
	return g_strcmp0(lhs, rhs);
}