/** @module arguments */
/// <reference path="result.js" />
import { ERROR, OK } from "./result.js";

const NO_INPUT_ERROR_MESSAGE = "No file to process. Enter path to file";

/**
 * Read argument from nodejs process
 * @returns {Result<String>} result of reading argument
 */
function readCliArgument() {
  const maybeArgument = process.argv[2];
  if (!maybeArgument || maybeArgument.length === 0) {
    return [ERROR, NO_INPUT_ERROR_MESSAGE];
  }

  return [OK, maybeArgument];
}

export { readCliArgument };