#!/usr/bin/env python3


import os
import re
from subprocess import run, CompletedProcess
from typing import Tuple

DRY_RUN = False


def handle_error(process: CompletedProcess) -> int:
    if process.stdout:
        print(f"stdout: {process.stdout}")
    if process.stderr:
        print(f"stderr: {process.stderr}")
    return process.returncode


def run_cmd(*args: str) -> Tuple[int, CompletedProcess]:
    if DRY_RUN:
        print(" ".join(args))
        return (0, None)
    process = run(args, capture_output=True)
    return (handle_error(process), process)


def make_pair(submission: str) -> Tuple[str, str]:
    login = re.search("(x[a-z0-9]*)_.*", submission).group(1)
    return (login, submission)


def mkcd(directory: str) -> None:
    os.makedirs(directory, exist_ok=True)
    os.chdir(directory)