from trezor.utils import chunks

from apps.common import HARDENED

if False:
    from typing import Iterable, Iterator


def split_address(address: str) -> Iterator[str]:
    return chunks(address, 17)


def address_n_to_str(address_n: Iterable[int]) -> str:
    def path_item(i: int) -> str:
        if i & HARDENED:
            return str(i ^ HARDENED) + "'"
        else:
            return str(i)

    if not address_n:
        return "m"

    return "m/" + "/".join([path_item(i) for i in address_n])