"""Offline smoke for estimator IMV integration. Mocks IMV fetch + DB."""

import os

# Settings требует DATABASE_URL при инициализации (fail-fast, C-3).
# Для offline unit-тестов задаём dummy DSN до любого импорта из app.
os.environ.setdefault("DATABASE_URL", "postgresql://test:test@localhost/test_db")

from unittest.mock import AsyncMock, MagicMock, patch

import anyio

from app.services.estimator import (
    _IMV_HOUSE_TYPE_MAP,
    _IMV_REPAIR_MAP,
    _get_or_fetch_imv_cached,
)


def test_imv_house_type_map() -> None:
    assert _IMV_HOUSE_TYPE_MAP["panel"] == "panel"
    assert _IMV_HOUSE_TYPE_MAP["monolithic"] == "monolith"
    assert _IMV_HOUSE_TYPE_MAP[None] is None
    assert _IMV_HOUSE_TYPE_MAP.get("unknown") is None


def test_imv_repair_map() -> None:
    assert _IMV_REPAIR_MAP["needs_repair"] == "required"
    assert _IMV_REPAIR_MAP["excellent"] == "designer"
    assert _IMV_REPAIR_MAP[None] is None


def test_imv_cache_miss_calls_evaluate() -> None:
    """Cache miss → calls evaluate_via_imv + save_imv_evaluation."""
    from app.services.scrapers.avito_imv import IMVEvaluation, IMVGeo

    mock_db = MagicMock()
    mock_db.execute.return_value.mappings.return_value.first.return_value = None  # no cache hit

    fake_result = IMVEvaluation(
        cache_key="x" * 64,
        address="ЕКБ test",
        rooms=2,
        area_m2=42.0,
        floor=4,
        floor_at_home=5,
        house_type="panel",
        renovation_type="cosmetic",
        has_balcony=True,
        has_loggia=False,
        geo=IMVGeo(geo_hash="JWT"),
        recommended_price=6_290_000,
        lower_price=6_100_000,
        higher_price=6_600_000,
        market_count=800,
    )

    async def _run() -> None:
        with (
            patch(
                "app.services.estimator.evaluate_via_imv",
                new=AsyncMock(return_value=fake_result),
            ),
            patch("app.services.estimator.save_imv_evaluation", return_value=1),
        ):
            result = await _get_or_fetch_imv_cached(
                mock_db,
                address="ЕКБ test",
                rooms=2,
                area_m2=42.0,
                floor=4,
                floor_at_home=5,
                house_type="panel",
                renovation_type="cosmetic",
                has_balcony=True,
                has_loggia=False,
            )
        assert result is not None
        assert result.recommended_price == 6_290_000

    anyio.run(_run)


def test_imv_fetch_failure_returns_none_gracefully() -> None:
    """Network failure → returns None, не raises."""
    mock_db = MagicMock()
    mock_db.execute.return_value.mappings.return_value.first.return_value = None

    async def _run() -> None:
        with patch(
            "app.services.estimator.evaluate_via_imv",
            new=AsyncMock(side_effect=RuntimeError("test net error")),
        ):
            result = await _get_or_fetch_imv_cached(
                mock_db,
                address="X",
                rooms=2,
                area_m2=42.0,
                floor=4,
                floor_at_home=5,
                house_type="panel",
                renovation_type="cosmetic",
                has_balcony=True,
                has_loggia=False,
            )
        assert result is None

    anyio.run(_run)