#include <unistd.h>
#include <stdio.h>
#include <sys/types.h>
#include <dirent.h>
#include <string.h>

#include "scaffold.h"
#include "dir.h"

int
has_dotpijul(const char *path)
{
	struct dirent *d;
	DIR *dir;
	int ret;

	ret = 0;

	if (!(dir = opendir(path)))
		return ret;

	while ((d = readdir(dir)) != NULL) {
		if (!strncmp(d->d_name, ".pijul", 6)) {
			ret = 1;
			break;
		}
	}
	closedir(dir);
	return ret;
}

#ifndef PATH_MAX
#define PATH_MAX 4096
#endif

char *
find_dotpijul()
{
	/**
	 * idea is this: set a string to current directory, check if
	 * ".pijul" is present - if not, cd("..") and look again.
	 */

	char path[PATH_MAX] = { 0 };
	char *s = NULL;
	int found = 0;

	if (!getcwd(path, PATH_MAX))
		die("unable to get current working directory");

	while (!(found = has_dotpijul(path)) && path != s) {
		s = strrchr(path, '/');
		*s = '\0';
	}

	if (!found)
		return NULL;

	s = xstrdup(path);
	return s;
}