"""B07 횡단면도 — 단면 블록 테두리 ↔ 안쪽 그림 간격 1 mm (59-1)."""

import pytest

from B07_DesignDetail.B07_DesignDetail_Engine_Cad import (
    CROSS_BORDER_PAD_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

_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)
    ],
}


def test_frame_hugs_section_by_one_mm() -> None:
    drawing = build_cross_drawing(_SOURCE, "cross_00020m", None, None, None, "")
    lines = [e for e in drawing["entities"] if e.get("layerId") != FRAME_LAYER_ID]
    frame = [e for e in drawing["entities"] if e.get("layerId") == FRAME_LAYER_ID]
    min_x, min_y, max_x, max_y = entities_bbox(lines)
    f_min_x, f_min_y, f_max_x, f_max_y = entities_bbox(frame)
    assert CROSS_BORDER_PAD_MM == 1.0
    assert f_max_y - max_y == pytest.approx(1.0)
    assert min_y - f_min_y == pytest.approx(1.0)
    # 표 없는 블록 크기 = 테두리 크기
    width, height = section_block_size(_SOURCE, None, with_table=False)
    assert height == pytest.approx(f_max_y - f_min_y)
    assert width == pytest.approx(f_max_x - f_min_x)


# ── 68-1 장 배치: 단면마다 자기 박스(칸 통일 없음) ──────────────────────────────

from B07_DesignDetail.B07_DesignDetail_Engine_Cad import CROSS_SECTION_MARGIN_M  # noqa: E402
from B07_DesignDetail.B07_DesignDetail_Engine_Cad_Sheet import (  # noqa: E402
    build_cross_sheet,
    plan_cross_sheets,
)


def _source(chainage: float, slope: float, half: int = 10) -> dict:
    return {
        "chainage_m": chainage,
        "samples": [
            {"valid": True, "offset_m": float(x), "elevation_m": 100.0 + slope * x}
            for x in range(-half, half + 1)
        ],
    }


def _box(entity: dict) -> tuple[float, float, float, float] | None:
    if entity.get("type") == "Table":
        shape = entity["shapeData"]
        origin = shape["origin"]
        return (
            origin["x"],
            origin["y"] - sum(shape["rowHeights"]),
            origin["x"] + sum(shape["columnWidths"]),
            origin["y"],
        )
    return entities_bbox([entity])


_TABLE = {"ground": 100.0, "planned": 100.0}


def test_each_block_hugs_its_own_drawing_by_one_mm() -> None:
    """크기 다른 단면 셋을 한 장에 — 박스마다 자기 그림(표 포함)에서 사방 1.0 mm."""
    sources = [_source(0.0, 0.05), _source(20.0, 0.6, 15), _source(40.0, 0.2, 6)]
    blocks = [(s["chainage_m"], *section_block_size(s, None, design=None)) for s in sources]
    sheets = plan_cross_sheets(blocks)
    assert len(sheets) == 1
    sections = [
        {"chainage": s["chainage_m"], "source": s, "quantity_table": _TABLE, "title": ""}
        for s in sources
    ]
    drawing = build_cross_sheet(sheets[0], sections)
    inner = [_box(e) for e in drawing["entities"] if e.get("layerId") != FRAME_LAYER_ID]
    frames = [p["frame"] for p in drawing["cross_placements"]]
    sizes = {(round(f[2] - f[0], 1), round(f[3] - f[1], 1)) for f in frames}
    assert len(sizes) == 3  # 칸 통일 없음 — 박스 크기가 단면마다 다르다
    for left, bottom, right, top in frames:
        mine = [
            b
            for b in inner
            if b
            and b[0] >= left - 1e-6
            and b[2] <= right + 1e-6
            and b[1] >= bottom - 1e-6
            and b[3] <= top + 1e-6
        ]
        assert min(b[0] for b in mine) - left == pytest.approx(1.0)
        assert right - max(b[2] for b in mine) == pytest.approx(1.0)
        assert min(b[1] for b in mine) - bottom == pytest.approx(1.0)
        assert top - max(b[3] for b in mine) == pytest.approx(1.0)


def test_small_blocks_are_not_widened_by_a_big_one() -> None:
    """큰 단면 하나 + 작은 단면 여럿 — 칸을 큰 블록으로 통일하던 때보다 한 장에 더 담긴다."""
    blocks = [(0.0, 300.0, 300.0)] + [(float(i), 110.0, 60.0) for i in range(1, 30)]
    sheets = plan_cross_sheets(blocks)
    # 옛 배치(칸 300×300 → A1 739×499 에 2×1)는 첫 장에 2개였다.
    assert len(sheets[0]["chainages"]) > 2
    assert sum(len(s["chainages"]) for s in sheets) == 30


def test_window_stops_where_lines_end() -> None:
    """원지반 자료가 여유(1.5 m)보다 짧으면 범위를 선 끝에서 멈춘다 — 빈 여유가 박스를 밀지 않음."""
    source = _source(0.0, 0.1, 6)
    design_line = [
        {"offset_m": -6.0, "elevation_m": 99.4},
        {"offset_m": -5.5, "elevation_m": 98.0},
        {"offset_m": 5.5, "elevation_m": 98.0},
        {"offset_m": 6.0, "elevation_m": 100.6},
    ]
    drawing = build_cross_drawing(source, "cross_00000m", design_line, None, None, "")
    placement = drawing["cross_placements"][0]
    assert placement["x0"] == pytest.approx(-6.0)
    assert placement["x1"] == pytest.approx(6.0)
    assert CROSS_SECTION_MARGIN_M == 1.5


def test_old_confirmed_cross_sheet_is_flagged(tmp_path) -> None:
    """68-1 전에 확정한 횡단 장은 저장본을 그대로 보이되 「옛 배치」 표시를 단다."""
    import json

    from B07_DesignDetail.B07_DesignDetail_Engine_Cad import DRAWING_FORMAT
    from B07_DesignDetail.B07_DesignDetail_Router_Support import (
        CROSS_SHEET_LAYOUT,
        _read_drawing,
    )

    stage = tmp_path / "B07_DesignDetail"
    (stage / "drawings").mkdir(parents=True)
    saved = {"format": DRAWING_FORMAT, "entities": [], "layers": []}
    (stage / "drawings" / "cross_s00000m.json").write_text(json.dumps(saved), encoding="utf-8")
    entry = {"kind": "cross", "label": "횡단면도 1장", "confirmed": True}
    manifest = {"drawings": {"cross_s00000m": entry}}
    (stage / "manifest.json").write_text(json.dumps(manifest), encoding="utf-8")
    _k, _l, drawing, confirmed, _t = _read_drawing(tmp_path, tmp_path / "x.json", "cross_s00000m")
    assert confirmed and drawing.get("stale_layout") is True

    entry["layout"] = CROSS_SHEET_LAYOUT
    (stage / "manifest.json").write_text(json.dumps(manifest), encoding="utf-8")
    _k, _l, drawing, confirmed, _t = _read_drawing(tmp_path, tmp_path / "x.json", "cross_s00000m")
    assert confirmed and "stale_layout" not in drawing