from risotto.utils import multi_function as _multi_function
from typing import List as _List


@_multi_function
def get_internal_zone_names(zones) -> _List[str]:
    return list(zones)


def is_first_interface(index) -> bool:
    return index == 0


@_multi_function
def get_host_ip(zones: dict,
                server_name: str,
                ):
    host_name, domain_name = server_name.split('.', 1)
    for zone in zones.values():
        if domain_name == zone['domain_name']:
            break
    else:
        raise ValueError(f'cannot find IP in domain name "{domain_name}" (for "{server_name}")')
    return zone['host_ip']