import uuid
from datetime import datetime
from iottb.definitions import TODAY_DATE_STRING, DEVICE_METADATA_FILE, CAPTURE_METADATA_FILE
from pathlib import Path


def get_iso_date():
    return datetime.now().strftime('%Y-%m-%d')


def subfolder_exists(parent: Path, child: str):
    return parent.joinpath(child).exists()


def generate_unique_string_with_prefix(prefix: str):
    return prefix + '_' + str(uuid.uuid4())