from __future__ import annotations

import cv2
from funcy import first, iterate
from numpy import generic


def copy_and_normalize_channels(image):

    image = image.copy()
    try:
        image = cv2.cvtColor(image, cv2.COLOR_GRAY2BGR)
    except cv2.error:
        pass

    return image


def npconvert(ob):
    if isinstance(ob, generic):
        return ob.item()
    raise TypeError


def lift(fn):
    def lifted(coll):
        yield from map(fn, coll)

    return lifted


def star(fn):
    def starred(*args):
        return fn(*args)

    return starred


def until(cond, func, *args, **kwargs):
    return first(filter(cond, iterate(func, *args, **kwargs)))