import hashlib

from settings import settings

__all__ = 'restore_field', 'sort_kv', 'check_sign'


def restore_field(data: dict) -> dict:
    """
    不在预置字段 去掉前置#
    :param data:
    :return:
    """
    res = dict()
    for k, v in data.items():
        map_name = settings.FIELD_MAP.get(k)
        if map_name:
            res[map_name] = v
        elif k.startswith('#'):
            res[k[1:]] = v
        else:
            res[k] = v
    return res


def sort_kv(*args: dict):
    return '&'.join(map(lambda item: '&'.join(map(lambda x: f'{x[0]}={x[1]}', sorted(item.items()))), args))


def check_sign(sign: str, salt: str, *args: dict):
    s = sort_kv(*args) + salt
    if hashlib.md5(s.encode()).hexdigest() != sign:
        return False
    return True