"""B07 횡단도 — B06 [상세] 글(`design.structure_note`)이 수량표 바로 위 여러 줄로 찍힘(150-3).

글 줄마다 Text(표 왼쪽 맞춤 · 표 윗변 아래로 줄 수만큼 내림) · 블록 높이도 같은 만큼 · 글 없으면 그대로.
"""

import pytest

from B07_DesignDetail.B07_DesignDetail_Engine_Cad import FRAME_LAYER_ID, build_cross_drawing
from B07_DesignDetail.B07_DesignDetail_Engine_Cad_Sheet import section_block_size
from B07_DesignDetail.B07_DesignDetail_Engine_Cad_Table import (
    cross_note_height,
    cross_note_lines,
)
from B07_DesignDetail.B07_DesignDetail_Engine_Template import entities_bbox

_SOURCE = {
    "chainage_m": 20.0,
    "samples": [
        {"valid": True, "offset_m": float(x), "elevation_m": 100.0 + 0.3 * x}
        for x in range(-10, 11)
    ],
}
_TABLE = {"ground": 100.0, "planned": 99.5}


def _draw(design: dict | None) -> dict:
    return build_cross_drawing(_SOURCE, "cross_00020m", None, design, _TABLE, "No.1")


def _table(drawing: dict) -> dict:
    return next(e for e in drawing["entities"] if e["type"] == "Table")


def _frame_height(drawing: dict) -> float:
    frame = [e for e in drawing["entities"] if e.get("layerId") == FRAME_LAYER_ID]
    _x0, y0, _x1, y1 = entities_bbox(frame)
    return y1 - y0


def test_글_줄_나눔() -> None:
    assert cross_note_lines(None) == []
    assert cross_note_lines({"structure_note": "  "}) == []
    assert cross_note_lines({"structure_note": "\nL형 측구  \n\n집수정 보강\n"}) == [
        "L형 측구",
        "",
        "집수정 보강",
    ]


def test_글_없으면_그대로() -> None:
    plain = _draw(None)
    empty = _draw({"structure_note": ""})
    assert _table(plain)["shapeData"] == _table(empty)["shapeData"]
    assert not [e for e in empty["entities"] if e["type"] == "Text"]


def test_글_두_줄은_표_위_Text_둘_표는_내려감() -> None:
    plain = _draw(None)
    noted = _draw({"structure_note": "L형 측구\n집수정 보강"})
    texts = [e for e in noted["entities"] if e["type"] == "Text"]
    assert [t["shapeData"]["label"] for t in texts] == ["L형 측구", "집수정 보강"]

    plain_top = _table(plain)["shapeData"]["origin"]["y"]
    noted_top = _table(noted)["shapeData"]["origin"]["y"]
    drop = cross_note_height(["a", "b"])
    assert plain_top - noted_top == pytest.approx(drop)

    # 표 왼쪽 맞춤 · 위에서 아래로 · 모두 표 윗변과 옛 윗변 사이
    left = _table(noted)["shapeData"]["origin"]["x"]
    for text in texts:
        base = text["shapeData"]["basePoint"]
        assert base["x"] == pytest.approx(left)
        assert text["shapeData"]["options"]["textAlign"] == "left"
        assert noted_top < base["y"] < plain_top
    assert texts[0]["shapeData"]["basePoint"]["y"] > texts[1]["shapeData"]["basePoint"]["y"]

    # 블록(테두리) 높이 = 글 높이만큼 커짐 · 블록 크기 계산도 같은 규칙
    assert _frame_height(noted) - _frame_height(plain) == pytest.approx(drop)
    _w, plain_h = section_block_size(_SOURCE, None)
    _w, noted_h = section_block_size(
        _SOURCE, None, design={"structure_note": "L형 측구\n집수정 보강"}
    )
    assert noted_h - plain_h == pytest.approx(drop)


def test_빈_줄은_자리만() -> None:
    noted = _draw({"structure_note": "윗줄\n\n아랫줄"})
    texts = [e for e in noted["entities"] if e["type"] == "Text"]
    assert [t["shapeData"]["label"] for t in texts] == ["윗줄", "아랫줄"]
    gap = texts[0]["shapeData"]["basePoint"]["y"] - texts[1]["shapeData"]["basePoint"]["y"]
    assert gap == pytest.approx(cross_note_height(["a", "b"]))