#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <flash.h>
#include <macros.h>

#include <fs/mufs.h>

#include "dir.h"
#include "path.h"
#include "tree.h"

int mufs_mkpath(struct mufs *fs, const char *path, unsigned type)
{
	struct mufs_dirent dirent;
	struct mufs_tree *tree;
	size_t len;
	char *s;
	char *name;

	if (!path || *path == '\0')
		return -1;

	if (!(s = mufs_abspath(path)))
		return -1;

	/* TODO: already exists. */
	if (resolve_path(fs, s)) {
		free(s);
		return 0;
	}

	name = strrchr(s, '/');
	*name++ = '\0';

	if (*s == '\0')
		s = "/";

	if (*name == '\0')
		return -1;

	if (!(tree = resolve_path(fs, s)))
		return -1;

	len = min(strlen(name), sizeof(dirent.path) - 1);
	memcpy(dirent.path, name, len);
	dirent.path[len] = '\0';
	dirent.type = type;

	dirent.tree.fs = fs;
	dirent.tree.file_size = 0;
	dirent.tree.root = 0;
	dirent.tree.depth = 0;

	if (!is_aligned(tree->file_size, fs->dev->log2_block_size) &&
		write_dirent(tree, tree->file_size, &dirent) > 0)
		return 0;

	if (write_dirent(tree, align_up(tree->file_size,
		fs->dev->log2_block_size), &dirent) > 0)
		return 0;

	return -1;
}