"""347 덧 관 고정 id — 측점 열쇠 `pipe:<id>` · 옮겨도 · 노선이 바뀌어도 · 다시 셈에도 그대로.

- 옛 자료(id 없음)는 읽을 때 `p<누가거리 cm>` · 두 번 읽어도 같음 · 다음 저장에 남음.
- 세부유역 다시 셈(계산기 왕복)은 허용 오차 안 원본 id 를 되붙임 · 새 자동 관 = 새 id · 겹치면 꼬리.
- 노선 바뀜(좌표 투영)에도 id 유지 · 측점 열쇠 = pipe:<id>(common_util_station_key).
"""

import json
from pathlib import Path
from types import SimpleNamespace

from B04_PreProcess import B04_PreProcess_Router_Basins as basins
from common_util import common_util_drainage_pipes as pipes_mod
from common_util.common_util_drainage_detail import DrainageDetail
from common_util.common_util_drainage_pipes import (
    PipePoint,
    carry_facility_attributes,
    ensure_pipe_ids,
    parse_pipe_points,
    project_pipe_points,
    read_pipe_points_file,
)
from common_util.common_util_route_geometry import RouteVertex, StructureCandidate
from common_util.common_util_station_key import station_key


def test_old_data_gets_stable_ids():
    raw = [{"chainage_m": 120.0, "source": "stream"}, {"chainage_m": 40.25}]
    first = parse_pipe_points(raw)
    again = parse_pipe_points(raw)
    assert [p.id for p in first] == ["p4025", "p12000"] == [p.id for p in again]
    kept = parse_pipe_points([{"chainage_m": 120.0, "id": "k7"}])
    assert kept[0].id == "k7" and kept[0].as_dict()["id"] == "k7"


def test_collision_gets_suffix():
    points = [PipePoint(chainage_m=100.0, id="p10000"), PipePoint(chainage_m=100.004)]
    assert [p.id for p in ensure_pipe_ids(points)] == ["p10000", "p10000-2"]


def test_recompute_carries_ids_and_names_new_pipe():
    reference = [PipePoint(chainage_m=100.0, id="a1", facility="ford_bridge")]
    rebuilt = [PipePoint(chainage_m=100.004), PipePoint(chainage_m=250.0, source="spacing")]
    carried = carry_facility_attributes(rebuilt, reference)
    assert carried[0].id == "a1" and carried[0].facility == "ford_bridge"
    assert carried[1].id == "p25000"


def test_save_writes_ids(tmp_path, monkeypatch):
    monkeypatch.setattr(pipes_mod, "pipe_points_path", lambda stored: tmp_path / "p.json")
    pipes_mod.save_pipe_points("x", "sig", [PipePoint(chainage_m=55.5)])
    saved = json.loads((tmp_path / "p.json").read_text("utf-8"))
    assert saved["points"][0]["id"] == "p5550"
    assert read_pipe_points_file(tmp_path / "p.json")[0].id == "p5550"


def test_route_change_keeps_id():
    vertices = [RouteVertex(0.0, 0.0, 0.0, 0.0), RouteVertex(0.0, 300.0, 0.0, 300.0)]
    moved = project_pipe_points([PipePoint(chainage_m=10.0, x=0.0, y=120.0, id="a1")], vertices)
    assert moved[0].chainage_m == 120.0 and moved[0].id == "a1"


def test_station_key_is_pipe_id():
    point = parse_pipe_points([{"chainage_m": 120.0, "id": "a1"}])[0]
    assert station_key("pipe", point.chainage_m, 20.0, point.id) == "pipe:a1"


def test_build_keeps_request_ids(monkeypatch):
    detail = DrainageDetail(
        pipes=[
            StructureCandidate(chainage_m=100.0, x=0.0, y=0.0, reason="confirmed"),
            StructureCandidate(chainage_m=200.0, x=0.0, y=0.0, reason="confirmed"),
        ]
    )
    monkeypatch.setattr(basins, "build_detail", lambda *args: detail)
    monkeypatch.setattr(basins, "drainage_dir", lambda path: Path("."))
    points = [PipePoint(chainage_m=100.0, id="a1"), PipePoint(chainage_m=200.0, id="b2")]
    _, carried = basins._build("x", SimpleNamespace(vertices=[]), points)
    assert [p.id for p in carried] == ["a1", "b2"]


def test_screen_reconcile_carries_id():
    """화면 `reconcilePipes` — 제자리 관 · 하나 옮긴 관은 id 그대로 · 새 관 · 둘 넘게 바뀐 관은 id 없음."""
    import os
    import subprocess

    helper = os.path.join(os.path.dirname(__file__), "helper_347_pipe_id_reconcile.cjs")
    proc = subprocess.run(
        ["node", helper], capture_output=True, text=True, timeout=60, encoding="utf-8"
    )
    assert proc.returncode == 0, proc.stderr
    result = json.loads(proc.stdout)
    assert result["same"] is None
    assert [p.get("id") for p in result["moved"]] == ["a1", "b2"]
    assert result["moved"][1]["reason"] == "confirmed"
    assert [p.get("id") for p in result["added"]] == ["a1", "b2", None]
    assert [p.get("id") for p in result["twoMoved"]] == [None, None]