"""
helpers.py


"""

from typing import List, Tuple

episode_counts = [6, 22, 23, 14, 26, 24, 24, 24, 23]


def check_validity(season: int, episode: int):
    """Shorthand function for checking if a specific episode is valid."""
    return (1 <= season <= 9) and (1 <= episode <= episode_counts[season])


def default(value, other):
    """Value default, similar to dict.get, but better."""
    return value if value is not None else other


def get_neighbors(array: List, index: int, distance: int = 2) -> Tuple[List, List]:
    """Get neighbors above and below a specific index in an array. Returns maximum number of items possible."""
    top, below = [], []
    for i in range(1, distance + 1):
        top_index = index - i
        below_index = index + i
        if top_index >= 0:
            top.append(array[top_index])
        if below_index < len(array):
            below.append(array[below_index])
    return top[::-1], below