/*
 * 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;
}

gchar *string_tm2str(struct tm *tm)
{
	gchar *buf = g_malloc(20 * sizeof(gchar));
	strftime(buf, 20, "%Ex", tm);
	return buf;
}

int string_compare_tokens(gchar **lhs, gchar **rhs)
{
	unsigned int i, cmp;

	if (!lhs[0] && rhs[0])
		return 1;
	if (lhs[0] && !rhs[0])
		return -1;

	for (i = 0; lhs[i]; i++) {
		if (!rhs[i])
			break;
		cmp = g_utf8_collate(lhs[i], rhs[i]);
		if (cmp != 0)
			return cmp;
	}

	if (lhs[i])
		return 1;
	if (rhs[i])
		return -1;
	return 0;
}

bool string_match_token(const gchar *prefix, gchar **tokens)
{
	unsigned int i;

	for (i = 0; tokens[i]; i++) {
		if (g_str_has_prefix(tokens[i], prefix))
			return true;
	}

	return false;
}

bool string_is_subdir(const gchar *a, const gchar *b)
{
	gchar **parent = b ? g_strsplit(b, "/", -1) : NULL;
	gchar **child  = a ? g_strsplit(a, "/", -1) : NULL;
	bool    subdir = true;
	int i;

	if (!parent || !child)
		return false;

	for (i = 0; parent[i]; i++) {
		if (!child[i] || g_utf8_collate(parent[i], child[i]) != 0) {
			subdir = false;
			break;
		}
	}

	g_strfreev(parent);
	g_strfreev(child);
	return subdir;
}