// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
import { sendSync, sendAsync, msg, flatbuffers } from "./dispatch_flatbuffers";

function req(
  path: string,
  mode: number
): [flatbuffers.Builder, msg.Any, flatbuffers.Offset] {
  const builder = flatbuffers.createBuilder();
  const path_ = builder.createString(path);
  const inner = msg.Chmod.createChmod(builder, path_, mode);
  return [builder, msg.Any.Chmod, inner];
}

/** Changes the permission of a specific file/directory of specified path
 * synchronously.
 *
 *       Deno.chmodSync("/path/to/file", 0o666);
 */
export function chmodSync(path: string, mode: number): void {
  sendSync(...req(path, mode));
}

/** Changes the permission of a specific file/directory of specified path.
 *
 *       await Deno.chmod("/path/to/file", 0o666);
 */
export async function chmod(path: string, mode: number): Promise<void> {
  await sendAsync(...req(path, mode));
}