Aislo/resources/tester/test_569_1_plan_layers.py

"""D 노선분석 지도 겹(PLAN 569-1) — 도엽 겹 풀어 냄 · 지적도 1 km 조각 · 1,000 꽉 차면 넷 ·
겹친 필지 거름 · 급경사 15° · 35° · 40° 단계 · 격자 지문 같으면 다시 안 셈.

./venv/Scripts/python.exe -m pytest resources/tester/test_569_1_plan_layers.py -q
"""

import base64
import io
import itertools
import json
import os
from pathlib import Path

import numpy as np
import pytest
from PIL import Image

from B04_PreProcess.B04_PreProcess_Engine_SheetParser import SHEET_LAYERS
from D03_PlanAnalysis import D03_PlanAnalysis_Layers as layers

EPSG = 5186
BOX = (230000.0, 450000.0, 234700.0, 452500.0)  # 4.7 × 2.5 km


# ── 도엽 겹 ──


def test_road_layer_listed() -> None:
    assert SHEET_LAYERS["도로중심선"] == ("N3L", "A0020000")
    assert SHEET_LAYERS["하천중심선"] == ("N3L", "E0020000")


def test_sheet_layer_unpacks_once(tmp_path, monkeypatch) -> None:
    processed = tmp_path / "B04_PreProcess" / "processed"
    processed.mkdir(parents=True)
    calls = []

    def merge(store, sheets, out, keys):
        calls.append((list(sheets), keys))  # 지물 0 건 = 파일 안 씀

    monkeypatch.setattr(layers, "parse_and_merge_sheets", merge)
    with pytest.raises(FileNotFoundError):
        layers.ensure_sheet_layer(tmp_path, "도로중심선")
    with pytest.raises(KeyError):
        layers.ensure_sheet_layer(tmp_path, "없는겹")
    (processed / "sheet_merge.key.json").write_text(
        json.dumps({"sheets": ["36712088", "36712089"], "parser": 2}), "utf-8"
    )
    path = layers.ensure_sheet_layer(tmp_path, "도로중심선")
    assert calls == [(["36712088", "36712089"], ["도로중심선"])]
    assert json.loads(path.read_text("utf-8"))["features"] == []
    layers.ensure_sheet_layer(tmp_path, "도로중심선")
    assert len(calls) == 1  # 있으면 그대로


# ── 지적도 ──


def test_tiles_cover_box() -> None:
    parts = layers.tiles(BOX)
    assert len(parts) == 15
    assert sum((b[2] - b[0]) * (b[3] - b[1]) for b in parts) == pytest.approx(4700 * 2500)
    assert max(b[2] for b in parts) == BOX[2] and max(b[3] for b in parts) == BOX[3]
    assert len(layers.quarter(parts[0])) == 4


class FakeWfs:
    """조각 너비가 `full_deg` 보다 넓으면 1,000 필지(꽉 참) · 아니면 셋(하나는 이웃과 같은 pnu) ·
    처음 `fail` 번은 실패(B04 꼴 — 파일 없음)."""

    def __init__(self, full_deg: float = 1.0, fail: int = 0) -> None:
        self.full_deg, self.fail, self._count = full_deg, fail, itertools.count(1)
        self.calls = 0

    def __call__(self, typename, filename, bounds, output_dir) -> None:
        assert typename == "lt_c_landinfobasemap"
        self.calls = next(self._count)  # 조각을 여러 줄기로 받음 — count 는 한 번에 하나
        if self.calls <= self.fail:
            return
        width = bounds["max_lon"] - bounds["min_lon"]
        tag = f"{bounds['min_lon']:.5f},{bounds['min_lat']:.5f}"
        n = 1000 if width > self.full_deg else 3
        feats = [{"id": f"{tag}/{i}", "properties": {"pnu": f"{tag}/{i}"}} for i in range(n)]
        feats[-1]["properties"]["pnu"] = "SHARED"
        body = {"type": "FeatureCollection", "features": feats}
        (Path(output_dir) / filename).write_text(json.dumps(body), "utf-8")


def test_full_tile_splits_into_four(monkeypatch) -> None:
    fake = FakeWfs(full_deg=0.008)  # 1 km 칸 ≈ 0.011° 꽉 참 · 500 m 칸 = 셋
    monkeypatch.setattr(layers, "request_vworld_wfs", fake)
    got, failed = layers.fetch_tile((230000.0, 450000.0, 231000.0, 451000.0), EPSG)
    assert fake.calls == 5 and failed == 0 and len(got) == 12


def test_dedup_by_pnu() -> None:
    feats = [{"properties": {"pnu": "1"}}, {"properties": {"pnu": "1"}}, {"id": "x"}]
    assert len(layers.dedup_parcels(feats)) == 2


def test_cadastral_fetch_once_then_grow(tmp_path, monkeypatch) -> None:
    fake = FakeWfs()
    monkeypatch.setattr(layers, "request_vworld_wfs", fake)
    got = layers.ensure_cadastral(tmp_path, BOX, EPSG)
    assert got["fetched"] and fake.calls == 15 and got["failed"] == 0
    assert got["count"] == 15 * 2 + 1  # 조각마다 둘 + 같은 pnu 하나
    saved = json.loads((tmp_path / layers.CADASTRAL_FILE).read_text("utf-8"))
    assert len(saved["features"]) == got["count"]
    again = layers.ensure_cadastral(tmp_path, (231000.0, 450500.0, 233000.0, 452000.0), EPSG)
    assert not again["fetched"] and fake.calls == 15  # 덮으면 다시 안 받음
    layers.ensure_cadastral(tmp_path, (*BOX[:2], BOX[2] + 500, BOX[3]), EPSG)
    assert fake.calls == 15 + 18  # 넓어지면 상자 통째로 다시(5.2 km = 6 × 3 조각)


def test_cadastral_same_odd_box_kept(tmp_path, monkeypatch) -> None:
    monkeypatch.setattr(layers, "request_vworld_wfs", FakeWfs())
    odd = (243862.86880613962, 544271.5644142976, 245002.02265078452, 545528.8660732408)
    assert layers.ensure_cadastral(tmp_path, odd, EPSG)["fetched"]
    assert not layers.ensure_cadastral(tmp_path, odd, EPSG)["fetched"]  # 소수 끝자리까지 같은 상자


def test_cadastral_failures(tmp_path, monkeypatch) -> None:
    monkeypatch.setattr(layers, "request_vworld_wfs", FakeWfs(fail=99))
    with pytest.raises(RuntimeError):
        layers.ensure_cadastral(tmp_path, BOX, EPSG)
    assert not (tmp_path / layers.CADASTRAL_FILE).exists()
    monkeypatch.setattr(layers, "request_vworld_wfs", FakeWfs(fail=1))
    first = layers.ensure_cadastral(tmp_path, BOX, EPSG)
    assert first["failed"] == 1 and (tmp_path / layers.CADASTRAL_FILE).exists()
    again = FakeWfs()
    monkeypatch.setattr(layers, "request_vworld_wfs", again)
    assert layers.ensure_cadastral(tmp_path, BOX, EPSG)["fetched"] and again.calls == 15


# ── 급경사 ──


def _plane(deg_south: float, deg_north: float, n: int = 40, cell: float = 2.0) -> np.ndarray:
    """남쪽 반 = deg_south · 북쪽 반 = deg_north 경사(동쪽으로 오름)."""
    x = np.arange(n) * cell
    z = np.empty((n, n))
    z[: n // 2] = x * np.tan(np.radians(deg_south))
    z[n // 2 :] = x * np.tan(np.radians(deg_north))
    return z


def _indices(value) -> np.ndarray:
    raw = base64.b64decode(value["image"].split(",", 1)[1])
    return np.asarray(Image.open(io.BytesIO(raw)))


def test_slope_bands_and_north_up() -> None:
    z = _plane(10.0, 37.0)
    value = layers.slope_bands_png(z, np.ones(z.shape, bool), 2.0)
    ratios = [b["ratio"] for b in value["bands"]]
    assert [b["min_deg"] for b in value["bands"]] == [15.0, 35.0, 40.0]
    assert ratios[0] < 0.1 and 0.4 < ratios[1] < 0.6 and ratios[2] < 0.1  # 경계 줄만
    index = _indices(value)
    assert value["width"] == value["height"] == 40
    assert (index[5, 5:35] == 2).all() and (index[-5, 5:35] == 0).all()  # 위 = 북 = 37°
    steep = layers.slope_bands_png(_plane(45.0, 20.0), np.ones((40, 40), bool), 2.0)
    assert steep["bands"][2]["ratio"] > 0.4 and steep["bands"][0]["ratio"] > 0.4
    hole = np.ones(z.shape, bool)
    hole[25:30, 10:20] = False
    assert (_indices(layers.slope_bands_png(z, hole, 2.0))[-29:-24, 10:20] == 0).all()


def test_slope_layer_fingerprint(tmp_path, monkeypatch) -> None:
    models = tmp_path / "B04_PreProcess" / "models_plan"
    models.mkdir(parents=True)
    npz = models / "dtm_sheet_laplace.npz"
    z = _plane(37.0, 37.0)
    x = 200000.0 + np.arange(40) * 2.0
    y = 450000.0 + np.arange(40) * 2.0
    np.savez(npz, x=x, y=y, z=z, valid_mask=np.ones(z.shape, bool), resolution=[2.0])
    counted = []
    real = layers.slope_bands_png
    monkeypatch.setattr(layers, "slope_bands_png", lambda *a: counted.append(1) or real(*a))
    first = layers.slope_layer(tmp_path, models, EPSG)
    assert first["box_m"] == [199999.0, 449999.0, 200079.0, 450079.0] and len(first["box"]) == 4
    assert layers.slope_layer(tmp_path, models, EPSG) == first and len(counted) == 1
    np.savez(npz, x=x, y=y, z=z * 0.5, valid_mask=np.ones(z.shape, bool), resolution=[2.0])
    os.utime(npz, ns=(1, 1))
    layers.slope_layer(tmp_path, models, EPSG)
    assert len(counted) == 2  # 격자가 바뀌면 다시 셈
    (npz).unlink()
    with pytest.raises(FileNotFoundError):
        layers.slope_layer(tmp_path, models, EPSG)