gendesign/backend/tests/api/v1/test_parcels_forecast.py

"""Тесты §22-форсайта в parcels API (3b-ii, #995).

Покрывает:
  • `horizon` query-param на POST /analyze: default 12; валидные {6,12,18} приняты;
    невалидные (7, 0) → 422 ДО любой работы с БД.
  • Best-effort enqueue после успешного analyze: `forecast_site_finder_report.delay`
    вызван ОДИН раз с (cad_num, horizon, created_by); ответ несёт forecast.status="pending".
  • Enqueue failure: `.delay` бросает → analyze всё равно 200, forecast.status="unavailable",
    исключение НЕ всплывает.
  • GET /{cad}/forecast: "1.0"-ран есть (mock latest_run_for) → 200 + status=ready + report;
    рана нет → 202 + status=pending.

Стратегия mock: как test_analyze_market_price.py — DB через dependency_overrides,
тяжёлые сервисы патчим. Celery НЕ дёргаем: патчим `.delay` на реальной таске
(lazy import внутри analyze_parcel резолвит атрибут модуля в момент вызова).
RBAC обходится через settings.testing=True (conftest).
"""

from __future__ import annotations

import datetime as dt
from typing import Any
from unittest.mock import MagicMock, patch

from fastapi.testclient import TestClient

from app.main import app

# ── Константы ─────────────────────────────────────────────────────────────────

_CAD = "66:41:0204016:10"
_WKT = "POLYGON((60.6 56.838, 60.61 56.838, 60.61 56.845, 60.6 56.845, 60.6 56.838))"
_GEOJSON = '{"type":"Polygon","coordinates":[[[60.6,56.838],[60.61,56.838]]]}'

# ── Mock factories (зеркалят test_analyze_market_price.py) ──────────────────────


def _make_mapping(data: dict[str, Any]) -> MagicMock:
    """Mock-строка (mapping) с __getitem__ + .get() для dict-like доступа."""
    m = MagicMock()
    m.__getitem__ = lambda self, k: data[k]
    m.get = lambda k, default=None: data.get(k, default)
    return m


def _make_db_for_analyze(geom_found: bool = True) -> MagicMock:
    """Mock DB Session, достаточный чтобы analyze_parcel дошёл до persist + enqueue."""
    db = MagicMock()

    geom_row = (
        _make_mapping({"geom_geojson": _GEOJSON, "geom_wkb": None, "source": "cad_quarter"})
        if geom_found
        else None
    )
    wkt_row = _make_mapping({"wkt": _WKT}) if geom_found else None
    district_row = _make_mapping(
        {"district_name": "Октябрьский", "median_price_per_m2": 120000, "dist_to_center": 1500.0}
    )
    centroid_row = _make_mapping({"lat": 56.84, "lon": 60.605})

    def _execute_side_effect(*args: Any, **kwargs: Any) -> MagicMock:
        sql = " ".join(str(args[0]).split()) if args else ""
        first_val: Any = None
        if "AS geom_geojson" in sql:
            first_val = geom_row
        elif "AS wkt" in sql:
            first_val = wkt_row
        elif "AS median_price_per_m2" in sql and "district_name" in sql:
            first_val = district_row
        elif "AS lon" in sql and "AS lat" in sql:
            first_val = centroid_row

        r = MagicMock()
        r.mappings.return_value.first.return_value = first_val
        r.mappings.return_value.all.return_value = []
        r.scalar.return_value = 0
        return r

    db.execute.side_effect = _execute_side_effect

    ctx = MagicMock()
    ctx.__enter__ = MagicMock(return_value=ctx)
    ctx.__exit__ = MagicMock(return_value=False)
    db.begin_nested.return_value = ctx

    return db


def _override_db(db: MagicMock):
    def _get_db_override():
        yield db

    return _get_db_override


# Тяжёлые внешние сервисы — заглушки (как в test_analyze_market_price.py).
_PATCHES = [
    patch("app.api.v1.parcels._fetch_air_quality_sync", return_value=None),
    patch("app.api.v1.parcels._fetch_weather_sync", return_value=None),
    patch("app.api.v1.parcels._fetch_seasonal_weather_sync", return_value=None),
    patch(
        "app.api.v1.parcels.get_quarter_dump_data",
        return_value={
            "nspd_zoning": None,
            "nspd_zouit_overlaps": [],
            "nspd_engineering_nearby": [],
            "nspd_dump": {"available": False, "stale": False, "harvest_triggered": False},
        },
    ),
    patch("app.api.v1.parcels.compute_velocity", return_value=None),
    patch("app.api.v1.parcels.compute_gate_verdict", return_value={"verdict": "unknown"}),
]


def _start_patches() -> None:
    for p in _PATCHES:
        p.start()


def _stop_patches() -> None:
    for p in _PATCHES:
        p.stop()


# ── horizon query-param ─────────────────────────────────────────────────────────


def test_horizon_default_12_and_enqueued() -> None:
    """Без horizon → default 12 прокидывается в enqueue, forecast.status=pending."""
    from app.core.db import get_db

    db = _make_db_for_analyze()
    app.dependency_overrides[get_db] = _override_db(db)
    _start_patches()
    delay_mock = MagicMock()
    try:
        with patch(
            "app.workers.tasks.forecast.forecast_site_finder_report.delay", delay_mock
        ):
            client = TestClient(app)
            resp = client.post(f"/api/v1/parcels/{_CAD}/analyze")
            assert resp.status_code == 200, resp.text
            body = resp.json()
            assert body["forecast"] == {"status": "pending", "horizon": 12}
            delay_mock.assert_called_once_with(_CAD, 12, None)
    finally:
        app.dependency_overrides.clear()
        _stop_patches()


def test_horizon_valid_values_accepted() -> None:
    """horizon ∈ {6,12,18} принимается → 200 + enqueue с этим горизонтом."""
    from app.core.db import get_db

    for h in (6, 12, 18):
        db = _make_db_for_analyze()
        app.dependency_overrides[get_db] = _override_db(db)
        _start_patches()
        delay_mock = MagicMock()
        try:
            with patch(
                "app.workers.tasks.forecast.forecast_site_finder_report.delay", delay_mock
            ):
                client = TestClient(app)
                resp = client.post(f"/api/v1/parcels/{_CAD}/analyze?horizon={h}")
                assert resp.status_code == 200, f"horizon={h}: {resp.text}"
                assert resp.json()["forecast"] == {"status": "pending", "horizon": h}
                delay_mock.assert_called_once_with(_CAD, h, None)
        finally:
            app.dependency_overrides.clear()
            _stop_patches()


def test_horizon_invalid_returns_422() -> None:
    """horizon вне {6,12,18} (7, 0) → 422 ДО enqueue (delay не вызывается)."""
    from app.core.db import get_db

    for h in (7, 0):
        db = _make_db_for_analyze()
        app.dependency_overrides[get_db] = _override_db(db)
        _start_patches()
        delay_mock = MagicMock()
        try:
            with patch(
                "app.workers.tasks.forecast.forecast_site_finder_report.delay", delay_mock
            ):
                client = TestClient(app)
                resp = client.post(f"/api/v1/parcels/{_CAD}/analyze?horizon={h}")
                assert resp.status_code == 422, f"horizon={h}: {resp.text}"
                delay_mock.assert_not_called()
        finally:
            app.dependency_overrides.clear()
            _stop_patches()


def test_enqueue_passes_created_by_header() -> None:
    """X-Authenticated-User прокидывается в .delay как created_by (3-й позиц. арг)."""
    from app.core.db import get_db

    db = _make_db_for_analyze()
    app.dependency_overrides[get_db] = _override_db(db)
    _start_patches()
    delay_mock = MagicMock()
    try:
        with patch(
            "app.workers.tasks.forecast.forecast_site_finder_report.delay", delay_mock
        ):
            client = TestClient(app)
            resp = client.post(
                f"/api/v1/parcels/{_CAD}/analyze",
                headers={"X-Authenticated-User": "alice"},
            )
            assert resp.status_code == 200, resp.text
            delay_mock.assert_called_once_with(_CAD, 12, "alice")
    finally:
        app.dependency_overrides.clear()
        _stop_patches()


# ── Enqueue failure ──────────────────────────────────────────────────────────


def test_enqueue_failure_returns_200_unavailable() -> None:
    """.delay бросает (broker down) → analyze всё равно 200, forecast.status=unavailable."""
    from app.core.db import get_db

    db = _make_db_for_analyze()
    app.dependency_overrides[get_db] = _override_db(db)
    _start_patches()
    delay_mock = MagicMock(side_effect=RuntimeError("redis down"))
    try:
        with patch(
            "app.workers.tasks.forecast.forecast_site_finder_report.delay", delay_mock
        ):
            client = TestClient(app)
            resp = client.post(f"/api/v1/parcels/{_CAD}/analyze")
            assert resp.status_code == 200, resp.text
            body = resp.json()
            assert body["forecast"] == {"status": "unavailable", "horizon": 12}
            delay_mock.assert_called_once()
    finally:
        app.dependency_overrides.clear()
        _stop_patches()


def test_analyze_response_keys_unchanged_additive() -> None:
    """forecast — additive: ключевые существующие блоки analyze остаются на месте."""
    from app.core.db import get_db

    db = _make_db_for_analyze()
    app.dependency_overrides[get_db] = _override_db(db)
    _start_patches()
    try:
        with patch("app.workers.tasks.forecast.forecast_site_finder_report.delay", MagicMock()):
            client = TestClient(app)
            resp = client.post(f"/api/v1/parcels/{_CAD}/analyze")
            assert resp.status_code == 200, resp.text
            body = resp.json()
            # Существующие ключи (до 3b-ii) присутствуют + новый forecast добавлен.
            for key in ("cad_num", "district", "score", "score_breakdown", "risks", "forecast"):
                assert key in body, f"ключ {key} отсутствует в ответе analyze"
    finally:
        app.dependency_overrides.clear()
        _stop_patches()


# ── GET /{cad}/forecast ──────────────────────────────────────────────────────


def test_get_forecast_ready_when_run_present() -> None:
    """Есть "1.0"-ран → 200 + status=ready + run_id + report=run.result."""
    from app.core.db import get_db

    report_dict = {"schema_version": "1.0", "deficit": -1.0, "moi": 117}
    fake_run = MagicMock()
    fake_run.id = 66
    fake_run.created_at = dt.datetime(2026, 6, 5, 7, 32, 0)
    fake_run.result = report_dict

    db = MagicMock()
    app.dependency_overrides[get_db] = _override_db(db)
    try:
        with patch("app.api.v1.parcels.latest_run_for", return_value=fake_run) as lrf:
            client = TestClient(app)
            resp = client.get(f"/api/v1/parcels/{_CAD}/forecast")
            assert resp.status_code == 200, resp.text
            body = resp.json()
            assert body["status"] == "ready"
            assert body["run_id"] == 66
            assert body["report"] == report_dict
            # Читаем именно §22-схему "1.0" (3b-i schema-filtered seam).
            _, kwargs = lrf.call_args
            assert kwargs.get("schema_version") == "1.0"
    finally:
        app.dependency_overrides.clear()


def test_get_forecast_pending_when_no_run() -> None:
    """Рана нет (latest_run_for → None) → 202 + status=pending."""
    from app.core.db import get_db

    db = MagicMock()
    app.dependency_overrides[get_db] = _override_db(db)
    try:
        with patch("app.api.v1.parcels.latest_run_for", return_value=None):
            client = TestClient(app)
            resp = client.get(f"/api/v1/parcels/{_CAD}/forecast")
            assert resp.status_code == 202, resp.text
            assert resp.json() == {"status": "pending"}
    finally:
        app.dependency_overrides.clear()


def test_get_forecast_db_error_returns_pending_not_500() -> None:
    """Ошибка БД на read-only поллинге → 202 pending (graceful, не 500)."""
    from app.core.db import get_db

    db = MagicMock()
    app.dependency_overrides[get_db] = _override_db(db)
    try:
        with patch(
            "app.api.v1.parcels.latest_run_for", side_effect=RuntimeError("db gone")
        ):
            client = TestClient(app)
            resp = client.get(f"/api/v1/parcels/{_CAD}/forecast")
            assert resp.status_code == 202, resp.text
            assert resp.json() == {"status": "pending"}
    finally:
        app.dependency_overrides.clear()