feat(512-6 배수유역 옛 그림): 노선 [저장] 뒤 새로 연 B05 = 마지막 [저장] 세부 유역 저장본의 옛 유역 · 옛 노선선 + 관만 지금 노선 위 · 낡음 점 · [업데이트] 로만 바꿈 · 저장본 없음 · 깨짐 = 관 자리만(옛 꼴) · 요구 326-6

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

B04_PreProcess/B04_PreProcess_Router_Basins.py

@@ -16,6 +16,7 @@ from __future__ import annotations
 
 import asyncio
 import copy
+import dataclasses
 import hashlib
 import json
 import logging
@@ -27,6 +28,7 @@ from uuid import UUID
 
 from fastapi import APIRouter, Depends
 from fastapi.responses import JSONResponse
+from pyproj import Transformer
 
 from B04_PreProcess.B04_PreProcess_Engine_Watershed_Export import STAGES, drainage_dir
 from B05_Profile.B05_Profile_Structures_Schema import DEFINITION_PATH, structure_type_map
@@ -121,14 +123,18 @@ def _rebuilt(detail: DrainageDetail) -> list[PipePoint]:
 
 
 def _build_stale(context: DrainageContext, points: list[PipePoint]) -> DrainageDetail:
-    """낡은 분석 — 세부 유역 없이 관 자리만(지금 노선 위) · 시설 속성은 넘겨받은 그대로."""
+    """낡은 분석 — 마지막 [저장]의 옛 유역 그림(저장본 파일 · 그 노선) + 관 자리만 지금 노선 위 ·
+    저장본이 없으면 관 자리만(512-6 · 새로 연 화면도 옛 그림 · [업데이트] 로만 바꿈)."""
+    pipes = pipes_from_chainages(context.vertices, [point.chainage_m for point in points])
+    _retag(pipes, points)
+    saved = _read_cache_file(context.stored_path)
+    if saved is not None:
+        return dataclasses.replace(saved["value"][0], pipes=pipes, pipe_candidates=[])
     to_lonlat = context.to_lonlat
-    detail = DrainageDetail(
+    return DrainageDetail(
         route_lonlat=[list(to_lonlat(vertex.x, vertex.y)) for vertex in context.vertices],
-        pipes=pipes_from_chainages(context.vertices, [point.chainage_m for point in points]),
+        pipes=pipes,
     )
-    _retag(detail.pipes, points)
-    return detail
 
 
 # 세부 유역 저장본(342-3 · 부록 4 R15) — 열쇠 = 관 목록 · 노선(평면 · 종단 Z) · 분석 산출물 ·
@@ -165,6 +171,26 @@ def _cache_path(stored_path: str):
     return drainage_dir(stored_path) / DETAIL_CACHE_FILENAME
 
 
+def _read_cache_file(stored_path: str) -> dict[str, Any] | None:
+    """[저장] 때 남긴 세부 유역 저장본 `{key, value: (detail, 관 목록)}` — 없거나 깨지면 None."""
+    try:
+        with _cache_path(stored_path).open("rb") as file:
+            saved = pickle.load(file)
+        saved["value"][0].basins  # 모양 확인
+        return saved
+    except (
+        OSError,
+        ValueError,
+        pickle.PickleError,
+        EOFError,
+        AttributeError,
+        KeyError,
+        TypeError,
+        IndexError,
+    ):
+        return None
+
+
 def _remember(key: str, value: tuple[DrainageDetail, list[PipePoint]]) -> None:
     _DETAIL_CACHE.pop(key, None)
     _DETAIL_CACHE[key] = value
@@ -179,12 +205,8 @@ def _build_cached(
     key = _detail_key(context, points)
     hit = _DETAIL_CACHE.get(key)
     if hit is None:
-        try:
-            with _cache_path(context.stored_path).open("rb") as file:
-                saved = pickle.load(file)
-            hit = saved["value"] if saved.get("key") == key else None
-        except (OSError, pickle.PickleError, EOFError, AttributeError, KeyError, TypeError):
-            hit = None
+        saved = _read_cache_file(context.stored_path)
+        hit = saved["value"] if saved is not None and saved.get("key") == key else None
     if hit is None:
         detail, carried = _build(context.stored_path, context, points)
         if detail is None:
@@ -312,6 +334,12 @@ def _payload(
     payload["route_signature"] = route_signature(context.vertices)
     payload["pipe_signature"] = pipe_signature([pipe.chainage_m for pipe in detail.pipes])
     payload["stale"] = STALE_MESSAGE if stale else None
+    if stale:  # 노선선 = 옛 그림의 노선(512-6 · 저장본 없으면 지금 노선 그대로)
+        back = Transformer.from_crs("EPSG:4326", context.crs, always_xy=True)
+        payload["route_xy"] = [
+            [round(x, 3), round(y, 3)]
+            for x, y in (back.transform(lon, lat) for lon, lat in detail.route_lonlat)
+        ]
     return round_floats(payload, LONLAT_DIGITS)
 
 

resources/tester/test_512_6_drainage_saved_old.py

@@ -0,0 +1,72 @@
+"""512-6(요구 326-6) 노선 [저장] 뒤 새로 연 B05 = 저장된 옛 유역 그림 + 낡음.
+
+- 낡은 분석(노선 지문 다름)이면 마지막 [저장]의 세부 유역 저장본(`04_detail_cache.pkl`)으로
+  옛 유역 · 옛 노선선을 돌려줌 · 관 자리만 지금 노선 위 · 저장본 없으면 관 자리만(옛 꼴).
+- 화면은 열 때 그림이 없으니 그 답을 그대로 그림 + 낡음 점([업데이트] 로만 바꿈 · test_512_2).
+"""
+
+import pickle
+from pathlib import Path
+from uuid import uuid4
+
+from pyproj import Transformer
+
+from B04_PreProcess import B04_PreProcess_Router_Basins as basins
+from common_util.common_util_drainage_context import DrainageContext
+from common_util.common_util_drainage_detail import DrainageDetail, WatershedBasin
+from common_util.common_util_route_geometry import RouteVertex
+
+CRS = "EPSG:5186"
+TO = Transformer.from_crs(CRS, "EPSG:4326", always_xy=True)
+
+
+def _context(tmp_path: Path, monkeypatch, shift: float) -> DrainageContext:
+    monkeypatch.setattr(basins, "drainage_dir", lambda _stored: tmp_path)
+    vertices = [
+        RouteVertex(200000.0 + shift, 500000.0, 100.0, 0.0),
+        RouteVertex(200300.0 + shift, 500000.0, 90.0, 300.0),
+    ]
+    return DrainageContext(
+        stored_path="x",
+        project_root=tmp_path,
+        vertices=vertices,
+        crs=CRS,
+        to_lonlat=lambda x, y: TO.transform(x, y),
+    )
+
+
+def test_저장본_있으면_옛_그림과_옛_노선(tmp_path, monkeypatch):
+    old = DrainageDetail(
+        route_lonlat=[
+            list(TO.transform(200000.0, 500000.0)),
+            list(TO.transform(200300.0, 500000.0)),
+        ],
+        basins=[WatershedBasin(index=1, chainage_m=120.0, outlet_x=200120.0, outlet_y=500000.0)],
+    )
+    with (tmp_path / basins.DETAIL_CACHE_FILENAME).open("wb") as file:
+        pickle.dump({"key": "옛", "value": (old, [])}, file)
+    context = _context(tmp_path, monkeypatch, shift=17.0)  # 노선 17 m 옮김
+    points = [basins.PipePoint(chainage_m=150.0, source="user")]
+    detail = basins._build_stale(context, points)
+    assert [basin.chainage_m for basin in detail.basins] == [120.0]
+    assert detail.pipe_candidates == []
+    assert abs(detail.pipes[0].x - 200167.0) < 1e-6  # 관 = 지금 노선 위
+    payload = basins._payload(uuid4(), context, detail, points, True, stale=True)
+    assert payload["stale"] and len(payload["basins"]) == 1
+    xy = payload["route_xy"]
+    assert abs(xy[0][0] - 200000.0) < 0.01 and abs(xy[1][0] - 200300.0) < 0.01  # 옛 노선
+
+
+def test_저장본_없으면_관_자리만(tmp_path, monkeypatch):
+    context = _context(tmp_path, monkeypatch, shift=17.0)
+    points = [basins.PipePoint(chainage_m=150.0, source="user")]
+    detail = basins._build_stale(context, points)
+    assert detail.basins == []
+    payload = basins._payload(uuid4(), context, detail, points, True, stale=True)
+    assert abs(payload["route_xy"][0][0] - 200017.0) < 0.01  # 지금 노선
+
+
+def test_깨진_저장본은_없음과_같음(tmp_path, monkeypatch):
+    (tmp_path / basins.DETAIL_CACHE_FILENAME).write_bytes(b"broken")
+    monkeypatch.setattr(basins, "drainage_dir", lambda _stored: tmp_path)
+    assert basins._read_cache_file("x") is None