"""490-1 B05 종단 — 임시 횡단이 열리는 자리 가까이 표시 = 누름과 같은 판정(`crossPickAt`).

판정 함수 = 옛 누름 판정(원지반선 위아래 12 px · 500-1 8 → 12 · 정수 m · 추가 측점 선 = 그 측점 · 단추 = null)과
같은 값 · 허용 밖 null. 500-2 = 다른 측점선("station")은 띠 안이면 임시 횡단 · 띠 밖이면 null(측점 고름 몫). TS 쪽 = `helper_490_1_cross_pick.cjs`(Node). 화면 조작은 ORCA 로 확인.
"""

from __future__ import annotations

import json
import subprocess
import tempfile
from pathlib import Path

HERE = Path(__file__).resolve().parent
ROOT = HERE.parents[1]

SAMPLES = [
    {"chainage_m": 0.0, "elevation_m": 10.0},
    {"chainage_m": 20.0, "elevation_m": 20.0},
    {"chainage_m": 40.0, "elevation_m": None},  # 빈 표고는 건너뜀
    {"chainage_m": 60.0, "elevation_m": 0.0},
]


def _ground_y(elevation: float) -> float:
    return 100 - elevation * 2


def _old_pick(hit, chainage: float, pointer_y: float) -> int | None:
    """옛 `groundPickAt` + 누름 처리(Render.ts 329~346) 그대로."""
    if hit == "other":
        return None
    if isinstance(hit, dict):
        return round(hit["plusM"])
    valid = [s for s in SAMPLES if s["elevation_m"] is not None]
    after = next((i for i, s in enumerate(valid) if s["chainage_m"] >= chainage), -1)
    if after <= 0:
        return None
    a, b = valid[after - 1], valid[after]
    t = (chainage - a["chainage_m"]) / (b["chainage_m"] - a["chainage_m"] or 1)
    ground = a["elevation_m"] + (b["elevation_m"] - a["elevation_m"]) * t
    return round(chainage) if abs(pointer_y - _ground_y(ground)) <= 12 else None


CASES = [
    {"hit": None, "chainageM": 10.2, "pointerY": 69.8},  # 지반 y = 69.8 · 딱 위
    {"hit": None, "chainageM": 10.2, "pointerY": 81.8},  # 12 px 끝(옛 8 px 밖)
    {"hit": None, "chainageM": 10.2, "pointerY": 82.3},  # 허용 밖
    {"hit": None, "chainageM": 10.2, "pointerY": 57.3},  # 위쪽 허용 밖
    {"hit": None, "chainageM": 50.0, "pointerY": 93.0},  # 빈 표고 건너 20→60 보간
    {"hit": None, "chainageM": 0.0, "pointerY": 80.0},  # 첫 표본 = null(옛 판정 그대로)
    {"hit": None, "chainageM": 70.0, "pointerY": 100.0},  # 끝 뒤
    {"hit": {"plusM": 33.6}, "chainageM": 10.0, "pointerY": 0.0},  # 추가 측점 선
    {"hit": "other", "chainageM": 10.4, "pointerY": 70.0},  # 단추
    {"hit": "station", "chainageM": 10.4, "pointerY": 69.0},  # 측점선 · 띠 안 = 임시 횡단
    {"hit": "station", "chainageM": 10.4, "pointerY": 81.0},  # 측점선 · 띠 끝 안
    {"hit": "station", "chainageM": 10.4, "pointerY": 90.0},  # 측점선 · 띠 밖 = 측점 고름
    {"hit": "station", "chainageM": 0.0, "pointerY": 80.0},  # 측점선 · 첫 표본 = null
]


def _run() -> dict:
    with tempfile.TemporaryDirectory() as folder:
        path = Path(folder) / "job.json"
        path.write_text(json.dumps({"samples": SAMPLES, "cases": CASES}), encoding="utf-8")
        proc = subprocess.run(  # noqa: S603 — 고정 실행 파일
            ["node", str(HERE / "helper_490_1_cross_pick.cjs"), str(path)],
            capture_output=True,
            text=True,
            encoding="utf-8",
            timeout=60,
        )
    assert proc.returncode == 0, proc.stderr
    return json.loads(proc.stdout)


def test_판정_함수_옛_누름과_같은_값() -> None:
    result = _run()
    assert result["slack"] == 12
    picks = [row["pick"] for row in result["out"]]
    assert picks == [_old_pick(c["hit"], c["chainageM"], c["pointerY"]) for c in CASES]
    assert picks == [10, 10, None, None, 50, None, None, 34, None, 10, 10, None, None]


def test_누름_표시_같은_길() -> None:
    render = (ROOT / "B05_Profile/B05_Profile_UI_Profile_Render.ts").read_text(encoding="utf-8")
    assert render.count("crossPickFromEvent(chartWrap, event") == 2  # 누름 · 표시
    assert "mountCrossHint(chartWrap, body" in render and "blocked: ctx.toolActive" in render
    modal = (ROOT / "B05_Profile/B05_Profile_UI_Profile_CrossModal.ts").read_text(encoding="utf-8")
    assert "crossPickAt({" in modal and "event.buttons || options.blocked()" in modal
    assert 'scroller.addEventListener("scroll", hide' in modal