"""Тесты sync_functional_zones (#1058) — ГИСОГД-СО WFS → ekb_genplan_functional_zone.

Сеть/БД не дёргаются: мокаем fetch_functional_zones + SessionLocal, проверяем
маппинг properties → колонки, globalid-дедуп, upsert-идемпотентность.
"""

from __future__ import annotations

from contextlib import contextmanager
from typing import Any

from app.workers.tasks import genplan_zones_sync

# ── Фейковые данные ──────────────────────────────────────────────────────────


def _make_feature(
    globalid: str = "aaaa-1111",
    full_name: str | None = "Жилые зоны",
    classid: str | None = "Ж",
    status: str | None = "Существующий",
    area_ha: float | None = 12.5,
    doc_ref: str | None = "REF-001",
) -> dict[str, Any]:
    return {
        "geometry": {
            "type": "Polygon",
            "coordinates": [[[60.5, 56.8], [60.6, 56.8], [60.5, 56.8]]],
        },
        "properties": {
            "urban10_globalid": globalid,
            "full_name": full_name,
            "urban10_classid_v": "Жилые зоны (fallback)",
            "urban10_classid": classid,
            "urban10_status_v": status,
            "urban10_area": area_ha,
            "info_set_key_ref": doc_ref,
        },
    }


# ── Фейковая БД ──────────────────────────────────────────────────────────────


class _FakeDB:
    def __init__(self) -> None:
        self.executed: list[tuple[Any, dict[str, Any] | None]] = []
        self.committed = False
        self.closed = False

    @contextmanager
    def begin_nested(self) -> Any:
        yield

    def execute(self, sql: Any, params: dict[str, Any] | None = None) -> Any:
        self.executed.append((sql, params))
        return None

    def commit(self) -> None:
        self.committed = True

    def close(self) -> None:
        self.closed = True


# ── Тесты ────────────────────────────────────────────────────────────────────


def test_sync_maps_properties_to_columns(monkeypatch: Any) -> None:
    """Проверяем маппинг properties → параметры UPSERT."""
    feat = _make_feature(
        globalid="uuid-abc",
        full_name="Жилые зоны",
        classid="Ж",
        status="Существующий",
        area_ha=10.5,
        doc_ref="DOC-777",
    )
    db = _FakeDB()
    monkeypatch.setattr(genplan_zones_sync, "fetch_functional_zones", lambda: [feat])
    monkeypatch.setattr(genplan_zones_sync, "SessionLocal", lambda: db)

    result = genplan_zones_sync.sync_functional_zones()

    assert result == {"zones": 1}
    assert db.committed is True
    assert db.closed is True
    assert len(db.executed) == 1
    _, params = db.executed[0]
    assert params is not None
    assert params["globalid"] == "uuid-abc"
    assert params["zone_type"] == "Жилые зоны"
    assert params["zone_class_code"] == "Ж"
    assert params["status"] == "Существующий"
    assert params["area_ha"] == 10.5
    assert params["doc_ref"] == "DOC-777"
    assert isinstance(params["geojson"], str)
    assert isinstance(params["raw_props"], str)


def test_sync_fallback_to_classid_v_when_no_full_name(monkeypatch: Any) -> None:
    """full_name=None → zone_type берётся из urban10_classid_v."""
    feat = _make_feature(full_name=None)
    db = _FakeDB()
    monkeypatch.setattr(genplan_zones_sync, "fetch_functional_zones", lambda: [feat])
    monkeypatch.setattr(genplan_zones_sync, "SessionLocal", lambda: db)

    genplan_zones_sync.sync_functional_zones()

    _, params = db.executed[0]
    assert params is not None
    assert params["zone_type"] == "Жилые зоны (fallback)"


def test_sync_skips_feature_without_globalid(monkeypatch: Any) -> None:
    """Фича без globalid → пропускается (defensive), не вызывает UPSERT."""
    feat: dict[str, Any] = {
        "geometry": {"type": "Polygon", "coordinates": []},
        "properties": {"full_name": "Жилые зоны"},  # нет urban10_globalid
    }
    db = _FakeDB()
    monkeypatch.setattr(genplan_zones_sync, "fetch_functional_zones", lambda: [feat])
    monkeypatch.setattr(genplan_zones_sync, "SessionLocal", lambda: db)

    result = genplan_zones_sync.sync_functional_zones()

    assert result == {"zones": 0}
    assert db.executed == []
    assert db.committed is True


def test_sync_skips_feature_without_geometry(monkeypatch: Any) -> None:
    """Фича без geometry → пропускается."""
    feat: dict[str, Any] = {
        "geometry": None,
        "properties": {
            "urban10_globalid": "uuid-xyz",
            "full_name": "Производственные зоны",
        },
    }
    db = _FakeDB()
    monkeypatch.setattr(genplan_zones_sync, "fetch_functional_zones", lambda: [feat])
    monkeypatch.setattr(genplan_zones_sync, "SessionLocal", lambda: db)

    result = genplan_zones_sync.sync_functional_zones()

    assert result == {"zones": 0}
    assert db.executed == []


def test_sync_globalid_dedup_two_identical_features(monkeypatch: Any) -> None:
    """Две фичи с одинаковым globalid — оба UPSERT (ON CONFLICT дедуп на уровне БД)."""
    feat = _make_feature(globalid="dup-uuid")
    db = _FakeDB()
    monkeypatch.setattr(genplan_zones_sync, "fetch_functional_zones", lambda: [feat, feat])
    monkeypatch.setattr(genplan_zones_sync, "SessionLocal", lambda: db)

    result = genplan_zones_sync.sync_functional_zones()

    # Оба вызова UPSERT прошли (ON CONFLICT DO UPDATE разрулит на уровне БД).
    assert result == {"zones": 2}
    assert len(db.executed) == 2


def test_sync_savepoint_per_row_error_does_not_abort_batch(monkeypatch: Any) -> None:
    """SAVEPOINT per-row: ошибка в одной фиче не валит батч остальных."""
    call_count = 0

    class _FaultyDB(_FakeDB):
        @contextmanager
        def begin_nested(self) -> Any:
            nonlocal call_count
            call_count += 1
            if call_count == 1:
                raise Exception("upsert error row 1")
            yield

    features = [_make_feature(globalid=f"uuid-{i}") for i in range(3)]
    db = _FaultyDB()
    monkeypatch.setattr(genplan_zones_sync, "fetch_functional_zones", lambda: features)
    monkeypatch.setattr(genplan_zones_sync, "SessionLocal", lambda: db)

    result = genplan_zones_sync.sync_functional_zones()

    # Строка 1 упала (savepoint), строки 2 и 3 записались.
    assert result == {"zones": 2}
    assert db.committed is True
    assert db.closed is True


def test_sync_empty_wfs_response(monkeypatch: Any) -> None:
    """WFS вернул 0 фич → zones=0, commit без ошибок."""
    db = _FakeDB()
    monkeypatch.setattr(genplan_zones_sync, "fetch_functional_zones", lambda: [])
    monkeypatch.setattr(genplan_zones_sync, "SessionLocal", lambda: db)

    result = genplan_zones_sync.sync_functional_zones()

    assert result == {"zones": 0}
    assert db.committed is True
    assert db.closed is True


def test_upsert_sql_wraps_geom_with_st_makevalid() -> None:
    """_UPSERT_SQL содержит ST_MakeValid вокруг ST_SetSRID (#1156).

    Лёгкая проверка без PostGIS: строковое представление compiled SQL
    должно включать ST_MakeValid — гарантирует что backfill-логика
    присутствует в тексте запроса.
    """
    sql_text = str(genplan_zones_sync._UPSERT_SQL)
    assert "ST_MakeValid" in sql_text
    assert "ST_SetSRID" in sql_text