import os
import datetime


def fmt_datetime_suffix(dt: datetime.datetime = None):
    return (dt or datetime.datetime.now()).strftime("%Y-%m%d-%H%M")


def append_datetime_suffix(path, dt: datetime.datetime = None):
    return f'{path}_{fmt_datetime_suffix(dt)}'


def get_unique_path(
        path: str, max_tries: int = 100):
    if path is None or len(path) == 0:
        raise ValueError("'path' is none or empty")

    if not os.path.exists(path):
        return path

    max_tries = 100
    i = 1
    orig_path = path
    while i < max_tries:
        path = f'{orig_path}({i})'
        if not os.path.exists(path):
            break
        i += 1
        if i == max_tries:
            raise ValueError(
                f"Unable to make path unique by appending appending an incrementing integer. "
                f"Maximum attempts exceeded ({max_tries})")
    return path