// Copyright 2018 the Deno authors. All rights reserved. MIT license.
import * as fbs from "gen/msg_generated";
import { flatbuffers } from "flatbuffers";
import * as dispatch from "./dispatch";

/**
 * Creates a new directory with the specified path and permission synchronously.
 *
 *     import { mkdirSync } from "deno";
 *     mkdirSync("new_dir");
 */
export function mkdirSync(path: string, mode = 0o777): void {
  dispatch.sendSync(...req(path, mode));
}

/**
 * Creates a new directory with the specified path and permission.
 *
 *     import { mkdir } from "deno";
 *     await mkdir("new_dir");
 */
export async function mkdir(path: string, mode = 0o777): Promise<void> {
  await dispatch.sendAsync(...req(path, mode));
}

function req(
  path: string,
  mode: number
): [flatbuffers.Builder, fbs.Any, flatbuffers.Offset] {
  const builder = new flatbuffers.Builder();
  const path_ = builder.createString(path);
  fbs.Mkdir.startMkdir(builder);
  fbs.Mkdir.addPath(builder, path_);
  fbs.Mkdir.addMode(builder, mode);
  const msg = fbs.Mkdir.endMkdir(builder);
  return [builder, fbs.Any.Mkdir, msg];
}