"""#3257: предзаполнение формы оценки фактами дома.

Две независимые правки:
  1. TradeInEstimateInput — валидатор floor <= total_floors (когда оба заданы).
  2. GET /api/v1/geocode/house-facts — предзаполнение total_floors/year_built/
     house_type из справочника `houses` (переиспользует _lookup_house_facts).

Стиль моков БД/эндпоинта — как в test_geocode_reverse_api.py /
test_3234_house_facts_fallback.py.
"""

from __future__ import annotations

import os
import sys
from unittest.mock import MagicMock, patch

# DATABASE_URL required by config before any app import.
os.environ.setdefault("DATABASE_URL", "postgresql+psycopg://test:test@localhost:5432/test")

# WeasyPrint stub — not installed in CI without GTK.
_wp_mock = MagicMock()
sys.modules.setdefault("weasyprint", _wp_mock)

import pytest  # noqa: E402
from fastapi import FastAPI  # noqa: E402
from fastapi.testclient import TestClient  # noqa: E402
from pydantic import ValidationError  # noqa: E402

from app.api.v1 import geocode as geocode_module  # noqa: E402
from app.core.db import get_db  # noqa: E402
from app.schemas.trade_in import TradeInEstimateInput  # noqa: E402
from app.services.estimator import _HouseFacts  # noqa: E402

# ── A. TradeInEstimateInput.floor <= total_floors ───────────────────────────


def _payload(**overrides: object) -> dict:
    base: dict[str, object] = {"address": "ЕКБ, ул. Учителей, 18", "area_m2": 38.8, "rooms": 1}
    base.update(overrides)
    return base


def test_floor_equal_total_floors_is_allowed() -> None:
    model = TradeInEstimateInput(**_payload(floor=9, total_floors=9))
    assert model.floor == model.total_floors == 9


def test_floor_less_than_total_floors_is_allowed() -> None:
    model = TradeInEstimateInput(**_payload(floor=4, total_floors=9))
    assert model.floor == 4


@pytest.mark.parametrize(
    "kwargs",
    [
        {"floor": 5},  # total_floors не задан
        {"total_floors": 9},  # floor не задан
        {},  # оба не заданы
    ],
)
def test_partial_input_skips_validator(kwargs: dict) -> None:
    """Частичный ввод легален — гейт не срабатывает, пока не заданы ОБА поля."""
    model = TradeInEstimateInput(**_payload(**kwargs))
    assert model is not None


def test_floor_greater_than_total_floors_is_rejected() -> None:
    with pytest.raises(ValidationError) as exc_info:
        TradeInEstimateInput(**_payload(floor=12, total_floors=9))
    message = str(exc_info.value)
    assert "12" in message
    assert "9" in message


# ── B. GET /api/v1/geocode/house-facts ──────────────────────────────────────


@pytest.fixture
def app() -> FastAPI:
    application = FastAPI()
    application.include_router(geocode_module.router, prefix="/api/v1/geocode")
    application.dependency_overrides[get_db] = lambda: MagicMock()
    return application


def test_house_facts_not_found_returns_200_found_false(app: FastAPI) -> None:
    client = TestClient(app)
    with patch(
        "app.api.v1.geocode._lookup_house_facts",
        return_value=None,
    ):
        r = client.get("/api/v1/geocode/house-facts?lat=56.838&lon=60.595")

    assert r.status_code == 200
    body = r.json()
    assert body == {
        "found": False,
        "total_floors": None,
        "year_built": None,
        "house_type": None,
        "source": None,
    }


def test_house_facts_found_returns_facts(app: FastAPI) -> None:
    facts = _HouseFacts(
        house_id=42,
        total_floors=9,
        year_built=1975,
        house_type="panel",
        material_walls=None,
    )
    client = TestClient(app)
    with patch(
        "app.api.v1.geocode._lookup_house_facts",
        return_value=facts,
    ) as lookup_mock:
        r = client.get("/api/v1/geocode/house-facts?lat=56.838&lon=60.595")

    assert r.status_code == 200
    body = r.json()
    assert body == {
        "found": True,
        "total_floors": 9,
        "year_built": 1975,
        "house_type": "panel",
        "source": "houses",
    }
    # target_house_id не резолвился (fias_id не передан) → None прокинут дальше
    assert lookup_mock.call_args.kwargs["target_house_id"] is None
    assert lookup_mock.call_args.kwargs["lat"] == 56.838
    assert lookup_mock.call_args.kwargs["lon"] == 60.595


def test_house_facts_resolves_house_id_by_fias(app: FastAPI) -> None:
    """fias_id передан и резолвится в houses.id → он уезжает в _lookup_house_facts
    как target_house_id (обходя geo-фолбэк по lat/lon)."""
    facts = _HouseFacts(
        house_id=42,
        total_floors=9,
        year_built=1975,
        house_type="panel",
        material_walls=None,
    )
    client = TestClient(app)
    with (
        patch(
            "app.api.v1.geocode._resolve_house_id_by_fias",
            return_value=42,
        ),
        patch(
            "app.api.v1.geocode._lookup_house_facts",
            return_value=facts,
        ) as lookup_mock,
    ):
        r = client.get("/api/v1/geocode/house-facts?lat=56.838&lon=60.595&fias_id=some-guid")

    assert r.status_code == 200
    assert lookup_mock.call_args.kwargs["target_house_id"] == 42


def test_house_facts_missing_required_query_params_is_422(app: FastAPI) -> None:
    client = TestClient(app)
    r = client.get("/api/v1/geocode/house-facts?lat=56.838")
    assert r.status_code == 422