Aislo/resources/tester/test_347_2_drainage_live.py

"""347-2 「지금 노선으로 셈」 서버 길 · 347-3 관 자리 후보.

- 늦은 차례: 계산 중 새 차례가 오면 단계 사이에서 그만둠(superseded) · 작업본에 안 씀.
- 메모리 격자로 세부 유역(파일 안 읽음) · 노선 초안 → 그린 노선.
- 관 자리 후보: 최대 간격(100 m)을 넘는 구간에만 · 기존 관 자리엔 안 냄 · 관 목록엔 안 넣음.
- [확정](recompute) = 낡았으면 배수유역부터 다시 셈 · [저장] = 안 셈.
"""

import asyncio
import math
from pathlib import Path
from types import SimpleNamespace
from uuid import uuid4

import numpy as np
import pytest
from shapely.geometry import LineString

from B04_PreProcess import B04_PreProcess_Engine_Watershed_Expand as expand
from B04_PreProcess import B04_PreProcess_Router_Basins as basins
from B04_PreProcess import B04_PreProcess_Router_Watershed_Live as live
from B04_PreProcess.B04_PreProcess_Engine_Watershed_Grid import GridSpec
from common_util.common_util_drainage_context import DrainageContext
from common_util.common_util_drainage_detail import (
    RoadRouting,
    build_detail,
    pipes_from_chainages,
    suggest_pipe_positions,
)
from common_util.common_util_route_geometry import RouteVertex

VERTICES = [RouteVertex(0.0, 0.0, 100.0, 0.0), RouteVertex(300.0, 0.0, 90.0, 300.0)]


def test_draft_vertices_follow_nodes():
    draft = {"nodes": [[0, 0], [100, 0], [100, 100]], "curveOn": [False, False, False]}
    vertices = live.draft_vertices(draft, 30.0)
    assert vertices[0].x == 0 and vertices[-1].y == 100
    assert math.isclose(vertices[-1].chainage_m, 200.0)


def test_candidates_only_in_long_gaps():
    strength = np.zeros(301)
    strength[150] = 50.0  # 흐름이 모이는 자리
    pipes = pipes_from_chainages(VERTICES, [0.0, 300.0])
    picked = suggest_pipe_positions(VERTICES, pipes, strength)
    assert picked and all(0 < pipe.chainage_m < 300 for pipe in picked)
    assert all(pipe.chainage_m == round(pipe.chainage_m) for pipe in picked)  # 정수 m
    dense = pipes_from_chainages(VERTICES, [0.0, 90.0, 180.0, 270.0, 300.0])
    assert suggest_pipe_positions(VERTICES, dense, strength) == []


def _routing() -> RoadRouting:
    spec = GridSpec(x_min=-5.0, y_max=5.0, cell_m=1.0, n_rows=10, n_cols=310)
    road_index = np.arange(5 * 310 + 5, 5 * 310 + 305, dtype=np.int32)
    road_slot = np.full(spec.size, -1, dtype=np.int32)
    road_slot[road_index] = np.arange(road_index.size)
    return RoadRouting(
        spec=spec,
        road_slot=road_slot,
        path_length=np.zeros(spec.size, np.float32),
        elevation=np.full(spec.size, 95.0, np.float32),
        road_cell_index=road_index,
        road_chainage=np.arange(road_index.size, dtype=np.float64),
        strength=np.ones(road_index.size, np.int64),
    )


def test_build_detail_uses_memory_routing(tmp_path):
    missing = tmp_path / "없는 폴더"  # 파일을 읽으면 None 이 됨
    detail = build_detail(missing, VERTICES, [0.0, 300.0], _routing(), [])
    assert detail is not None and detail.pipe_candidates
    assert build_detail(missing, VERTICES, [0.0, 300.0]) is None


def _patch_live(monkeypatch, preview_fn):
    async def prepare(project_id):
        return {"contours": [], "streams": [], "contour_key": "k"}

    async def load(project_id):
        return DrainageContext(stored_path="x", project_root=Path("."), vertices=VERTICES), ""

    monkeypatch.setattr(live, "_prepare", prepare)
    monkeypatch.setattr(live, "load_drainage_context", load)
    monkeypatch.setattr(live, "drainage_dir", lambda stored: Path("."))
    monkeypatch.setattr(live, "preview_stages", preview_fn)
    calls = SimpleNamespace(build=0)

    def build(*args):
        calls.build += 1
        return None, []

    monkeypatch.setattr(live, "_build", build)
    return calls


def test_newer_generation_stops_between_stages(monkeypatch):
    pid = uuid4()

    def preview(vertices, contours, streams, store, should_stop):
        live._LATEST_GENERATION[str(pid)] = 8  # 계산 중 새 조작 → 새 요청이 차례를 올림
        if should_stop():
            raise expand.AnalysisStopped

    calls = _patch_live(monkeypatch, preview)
    result = asyncio.run(live.post_drainage_live(pid, {"generation": 7, "points": []}))
    assert result == live.SUPERSEDED and calls.build == 0


def test_newer_generation_after_preview_skips_split(monkeypatch):
    pid = uuid4()

    def preview(vertices, contours, streams, store, should_stop):
        assert not should_stop()
        live._LATEST_GENERATION[str(pid)] = 3
        return SimpleNamespace(routing=object())

    calls = _patch_live(monkeypatch, preview)
    result = asyncio.run(live.post_drainage_live(pid, {"generation": 2}))
    assert result == live.SUPERSEDED and calls.build == 0


def test_engine_stops_in_expansion_round():
    contours = [
        {
            "geometry": {
                "type": "LineString",
                "coordinates": [
                    [150 + r * math.cos(t), -150 + r * math.sin(t)]
                    for t in np.linspace(0, 2 * math.pi, 121)
                ],
            },
            "properties": {"elevation": 300 - r},
        }
        for r in range(10, 200, 10)
    ]
    spec = GridSpec(x_min=100.0, y_max=-100.0, cell_m=1.0, n_rows=100, n_cols=100)
    domain = np.zeros((100, 100), bool)
    domain[20:80, 20:80] = True
    route = LineString([(110.0, -150.0), (190.0, -150.0)])
    with pytest.raises(expand.AnalysisStopped):
        expand.expand_by_red_boundary(
            spec, domain, contours, route, [], None, should_stop=lambda: True
        )


@pytest.mark.parametrize(
    "recompute, stale, expected", [(True, True, 1), (True, False, 0), (False, True, 0)]
)
def test_confirm_recomputes_only_when_stale(monkeypatch, recompute, stale, expected):
    import B04_PreProcess.B04_PreProcess_Router_Watershed as watershed

    calls = []

    async def is_stale(project_id):
        return stale

    async def region(project_id, refresh=False):
        calls.append(refresh)
        return {"status": "success"}

    async def resolve(*args, **kwargs):
        return basins.JSONResponse(status_code=404, content={})

    monkeypatch.setattr(basins, "_analysis_stale", is_stale)
    monkeypatch.setattr(watershed, "get_primary_region", region)
    monkeypatch.setattr(basins, "_resolve", resolve)
    asyncio.run(basins.put_pipe_points(uuid4(), {"points": []}, None, recompute))
    assert len(calls) == expected and all(calls)