"""КПП: нормализация и проверка формата (05-domain-rules §13.5, DBML v5.17, OQ-31)."""

import pytest

from src.common.exceptions import DomainValidationError
from src.domain.kpp import normalize_kpp, validate_kpp
from src.models.enums import EntityType


@pytest.mark.parametrize("raw", ["352801001", "352845001", "3528AB001", "35280A001", "3528A1001", "000000000"])
def test_valid_kpp_for_legal_entity(raw: str) -> None:
    assert validate_kpp(raw, EntityType.ЮЛ) == raw


def test_kpp_is_normalized_whitespace_removed_and_uppercased() -> None:
    assert validate_kpp(" 3528 ab 001 ", EntityType.ЮЛ) == "3528AB001"


@pytest.mark.parametrize("raw", [None, "", "   "])
def test_empty_kpp_is_none(raw: str | None) -> None:
    assert normalize_kpp(raw) is None
    assert validate_kpp(raw, EntityType.ЮЛ) is None
    assert validate_kpp(raw, EntityType.ИП) is None  # у ИП пустой КПП — норма


@pytest.mark.parametrize(
    "raw",
    [
        "35280100",  # 8 символов
        "3528010011",  # 10 символов
        "A52801001",  # буква в первых четырёх
        "3528010A1",  # буква в последних трёх
        "35280100A",
        "3528ab00",  # короткий
        "3528я1001",  # кириллица
        "٣٥٢٨٠١٠٠١",  # не ASCII-цифры
        "3528-1001",
    ],
)
def test_wrong_format_is_invalid_kpp(raw: str) -> None:
    with pytest.raises(DomainValidationError) as error:
        validate_kpp(raw, EntityType.ЮЛ)
    assert error.value.code == "INVALID_KPP"


def test_kpp_is_forbidden_for_sole_proprietor() -> None:
    with pytest.raises(DomainValidationError) as error:
        validate_kpp("352801001", EntityType.ИП)
    assert error.value.code == "INVALID_KPP"
    assert error.value.message == "у ИП КПП не бывает"


def test_unknown_entity_type_is_treated_as_legal_entity() -> None:
    assert validate_kpp("352801001", None) == "352801001"