import re


def chunk_array(array, chunk_number) -> list:
    if len(array) <= chunk_number:
        return [array]
    out, tmp, index = [], [], 0
    for el in array:
        tmp.append(el)
        index += 1
        if index == chunk_number:
            out.append(tmp)
            tmp = []
            index = 0
    out.append(tmp)
    return out


def parse_attachments(attachments) -> tuple:
    out = []
    for attach in attachments:
        t = attach['type']
        if t == 'wall':
            out.append(f'{t}{attach[t]["from_id"]}_{attach[t]["id"]}')
        else:
            out.append(f'{t}{attach[t]["owner_id"]}_{attach[t]["id"]}')
    return tuple(out)


def parse_mention(mention: (str, None)) -> int:
    if not mention:
        return 0
    reg = r'\[id(\d+)\|.+\]'
    match = re.match(reg, mention)
    if not match:
        return 0
    return int(match.group(1))


async def get_user_sex(user_id, api):
    query = await api.users.get(user_ids=user_id, fields='sex')
    return query[0]['sex'] if len(query) > 0 else 2