from __future__ import annotations

from dataclasses import dataclass, field
from typing import Optional, NewType

from domain.postcode import Postcode


def _empty_source_row() -> dict[str, str]:
    return {}


@dataclass(frozen=True)
class UnstandardisedAddress:
    address: str
    postcode: Postcode
    org_reference: Optional[str] = None
    additional_info: dict[str, str] = field(
        default_factory=_empty_source_row, compare=False
    )


# A batch of raw, pre-standardisation addresses as supplied by a landlord.
AddressList = NewType("AddressList", list[UnstandardisedAddress])