"""Enum'ы ORM против блоков `Enum {}` DBML v5.22: имена, значения и их порядок (без БД)."""

import enum
import re

import pytest
from sqlalchemy import Enum as SAEnum

from src.models import DBML_VERSION
from src.models.enums import ENUMS, pg_enum
from tests.dbml_helpers import dbml_path, load_dbml

EXPECTED_ENUM_COUNT = 33


def test_dbml_version_format() -> None:
    assert re.fullmatch(r"\d+\.\d+", DBML_VERSION)
    assert DBML_VERSION == "5.22"
    assert f"v{DBML_VERSION}" in dbml_path().name


def test_osv_data_type_has_nu_after_bu() -> None:
    """v5.15: налоговый учёт (`NU`) идёт сразу после `BU` — порядок DBML."""
    assert [m.value for m in ENUMS["osv_data_type"]] == ["BU", "NU", "CURRENCY", "QUANTITY", "SUM"]


def test_counterparty_match_kind_values() -> None:
    """v5.16: способ сопоставления контрагента — пять значений в порядке DBML."""
    assert [m.value for m in ENUMS["counterparty_match_kind"]] == ["INN", "NAME", "ALIAS", "MANUAL", "PROPAGATED"]


def test_enums_count_and_names_match_dbml() -> None:
    dbml_enums = {e.name for e in load_dbml().enums}
    assert len(dbml_enums) == EXPECTED_ENUM_COUNT
    assert set(ENUMS) == dbml_enums


def test_enum_values_match_dbml_in_order() -> None:
    for dbml_enum in load_dbml().enums:
        expected = [item.name for item in dbml_enum.items]
        actual = [m.value for m in ENUMS[dbml_enum.name]]
        assert actual == expected, f"enum {dbml_enum.name}: ожидалось {expected}, фактически {actual}"


def test_enum_classes_are_str_enums_with_member_name_equal_value() -> None:
    for name, cls in ENUMS.items():
        assert issubclass(cls, enum.Enum) and issubclass(cls, str), name
        assert [m.name for m in cls] == [m.value for m in cls], name


def test_cyrillic_values_kept_verbatim() -> None:
    assert [m.value for m in ENUMS["entity_type"]] == ["ЮЛ", "ИП"]


def test_pg_enum_factory_gives_dbml_named_type_in_dkb_schema() -> None:
    for name, cls in ENUMS.items():
        sa_enum = pg_enum(name)
        assert isinstance(sa_enum, SAEnum)
        assert sa_enum.name == name
        assert sa_enum.schema == "dkb"
        assert sa_enum.native_enum is True
        assert sa_enum.enums == [m.value for m in cls], name


def test_pg_enum_unknown_name_fails() -> None:
    with pytest.raises(KeyError):
        pg_enum("no_such_enum")