"""B07 횡단면도 — 화면이 덧그리는 설계선·구조물까지 박스 안 1 mm (68-3).

서버가 화면과 같은 TS 를 Node 로 돌려 덧그림 범위를 재고(`_Cross_Extent_Node`),
장 배치 · 블록 테두리가 그 범위를 덮는다.
"""

import json
from pathlib import Path

import pytest

from B07_DesignDetail.B07_DesignDetail_Engine_Cad import (
    CROSS_MM,
    FRAME_LAYER_ID,
    build_cross_drawing,
)
from B07_DesignDetail.B07_DesignDetail_Engine_Cad_Sheet import section_block_size
from B07_DesignDetail.B07_DesignDetail_Engine_Template import entities_bbox

ROOT = Path(__file__).resolve().parents[2]
FIXTURE = Path(__file__).parent / "fixtures" / "b07_cross_overlay_sections.json"
NODE_MODULES = ROOT / "config" / "node_modules"

_SOURCE = {
    "chainage_m": 0.0,
    "samples": [
        {"valid": True, "offset_m": float(x), "elevation_m": 100.0 + 0.2 * x}
        for x in range(-10, 11)
    ],
}
_DESIGN_LINE = [
    {"offset_m": -10.0, "elevation_m": 98.0},
    {"offset_m": -2.0, "elevation_m": 99.6},
    {"offset_m": 2.0, "elevation_m": 99.6},
    {"offset_m": 10.0, "elevation_m": 102.0},
]
# 오른쪽으로 8 m 더 뻗고 위로 3 m 솟는 덧그림(관 · 날개벽 따위)
_OVERLAY = (-3.0, 18.0, 97.0, 105.0)


def _frame(drawing: dict) -> list[float]:
    return drawing["cross_placements"][0]["frame"]


def test_frame_covers_overlay_by_one_mm() -> None:
    drawing = build_cross_drawing(
        _SOURCE, "cross_s00000m", _DESIGN_LINE, None, None, "", overlay=_OVERLAY
    )
    placement = drawing["cross_placements"][0]
    left, bottom, right, top = _frame(drawing)
    to_x = lambda offset: offset * CROSS_MM + placement["ox"]  # noqa: E731
    to_y = lambda elev: (elev - placement["dy"]) * CROSS_MM + placement["oy"]  # noqa: E731
    assert right - to_x(_OVERLAY[1]) == pytest.approx(1.0)
    assert top - to_y(_OVERLAY[3]) == pytest.approx(1.0)
    # 왼쪽 · 아래는 서버 선(원지반 끝 · 설계선)이 더 바깥 — 그쪽에 1 mm
    lines = [e for e in drawing["entities"] if e.get("layerId") != FRAME_LAYER_ID]
    min_x, _min_y, _max_x, _max_y = entities_bbox(lines)
    assert min_x - left == pytest.approx(1.0)
    # 장 배치용 크기도 같은 규칙
    width, height = section_block_size(_SOURCE, _DESIGN_LINE, with_table=False, overlay=_OVERLAY)
    assert width == pytest.approx(right - left)
    assert height == pytest.approx(top - bottom)


def test_no_overlay_keeps_68_1_frame() -> None:
    plain = build_cross_drawing(_SOURCE, "cross_s00000m", _DESIGN_LINE, None, None, "")
    inside = build_cross_drawing(
        _SOURCE, "cross_s00000m", _DESIGN_LINE, None, None, "", overlay=(1.0, 3.0, 99.7, 99.8)
    )
    assert _frame(plain) == pytest.approx(_frame(inside))


@pytest.mark.skipif(not NODE_MODULES.is_dir(), reason="프론트엔드 의존성 미설치")
def test_node_bundle_measures_screen_overlay() -> None:
    """화면 코드를 Node 로 — 배수관 측점(85.052)은 서버 범위(+4.0 m)보다 13.8 m 까지 뻗는다."""
    from B07_DesignDetail.B07_DesignDetail_Router_Support_Overlay import (
        _NPM_SCRIPT,
        BUNDLE,
        _extents_from,
    )
    from common_util.common_util_node_bundle import run_bundle_json

    detail = json.loads(FIXTURE.read_text(encoding="utf-8"))
    extents = _extents_from(run_bundle_json(BUNDLE, _NPM_SCRIPT, {"detail": detail}))
    assert set(extents) == {0, 85.05}  # 측점 키는 0.01 m 로 끊는다(cross_station)
    x_min, x_max, y_min, y_max = extents[85.05]
    assert x_max == pytest.approx(13.8216, abs=1e-3)
    assert x_min == pytest.approx(-10.4371, abs=1e-3)
    assert y_max - y_min == pytest.approx(16.9505, abs=1e-3)
    # 0 m: 노폭 글자(2 mm, 세로 가운데 정렬)가 맨 위 — 글자 반높이 0.1 m 까지
    assert extents[0][3] == pytest.approx(879.8831, abs=1e-3)