# -*- coding: utf-8 -*-
"""노면공 확폭 구간(PLAN 87-3) — 구간 묶기 · `widening_off` 글 읽고 쓰기 · 안 맞는 값 무시.

규칙은 Node 헬퍼(`helper_87_widening.cjs`)가 `design_structure_widening.ts` 를 그대로 돌림.
"""

import json
import os
import subprocess

import pytest

HERE = os.path.dirname(os.path.abspath(__file__))


@pytest.fixture(scope="module")
def out():
    proc = subprocess.run(
        ["node", os.path.join(HERE, "helper_87_widening.cjs")],
        capture_output=True,
        text=True,
        encoding="utf-8",
        timeout=60,
    )
    assert proc.returncode == 0, proc.stderr
    return json.loads(proc.stdout)


def test_곡선_둘은_구간_둘_확폭은_구간_최대(out):
    assert out["runs"] == [
        {"start_m": 20, "end_m": 60, "widening_m": 0.75},
        {"start_m": 100, "end_m": 120, "widening_m": 0.6},
    ]


def test_범위_안_측점만_묶음(out):
    assert out["inner"] == [
        {"start_m": 40, "end_m": 60, "widening_m": 0.75},
        {"start_m": 100, "end_m": 100, "widening_m": 0.5},
    ]
    assert out["none"] == []


def test_설계_없으면_곡선_확폭_바깥쪽만(out):
    assert out["fallback"] == 0.9
    assert out["fallbackStraight"] == 0


def test_끈_구간_글_왕복(out):
    assert out["off"] == "20-60"
    assert out["parsed"] == [[20, 60], [100, 120]]  # 틀린 조각은 버림
    assert out["isOff"] == [True, False]
    assert out["toggledOff"] == "100-120"
    assert out["toggledBoth"] == "20-60,100-120"
    assert out["toggledOn"] == ""


def test_안_맞는_끈_값은_무시_저장_때_빠짐(out):
    assert out["stale"] == "20-60"
    assert out["empty"] == ""


def test_확폭_면적_사다리꼴_앞뒤_0_측점까지(out):
    # 0~20: (0+0.3)/2×20=3 · 20~40: 10.5 · 40~60: 11.5 · 60~80: 4 → 29
    # 80~100: 5 · 100~120: 11 · 120~140: 6 → 22
    assert [round(a, 6) for a in out["area"]] == [29.0, 22.0]


def test_확폭_면적_노면공_범위로_자름(out):
    # 30 에서 자름: w(30)=0.525 → (0.525+0.75)/2×10=6.375 + 11.5 + 4 = 21.875
    assert round(out["areaClipped"], 6) == 21.875


def test_한_측점_구간도_면적_자료_없으면_0(out):
    assert round(out["areaSingle"], 6) == 20.0  # (0+1)/2×20 × 2
    assert out["areaMissing"] == 0