"""534-2 — 내장 엑셀 내보내기: 인쇄 HTML(Node 번들 `printHtml`) · xlsx 되읽기 · SVG → PNG · PDF 쪽 수.

책 하나(시트 둘 · 병합 · 열 폭 · 숨긴 열 · 머리 행 · 쪽 나눔 둘 · 그림 · 식)로 셋을 함께 봄.
"""

import io
import re
import shutil

import pytest
from openpyxl import load_workbook

from common_util import common_util_spreadsheet as spreadsheet
from common_util.common_util_print_pdf import PrintError
from common_util.common_util_svg_png import svgs_to_pngs
from common_util.common_util_workbook_xlsx import workbook_to_xlsx

pytestmark = pytest.mark.skipif(shutil.which("node") is None, reason="node 가 없음")

SVG = (
    '<svg xmlns="http://www.w3.org/2000/svg" width="120" height="60">'
    '<rect width="120" height="60" fill="#0a0"/></svg>'
)
BREAKS = [6, 12]


def _book() -> dict:
    cells = {"A1": {"값": "제목", "서식": 1}, "A2": {"값": "측점", "서식": 2}, "B2": {"값": "Fs"}}
    for r in range(3, 31):
        cells[f"A{r}"] = {"값": f"No.{r}"}
        cells[f"B{r}"] = {"값": r / 10, "서식": 3}
    cells["C3"] = {"식": "SUM(B3:B30)", "서식": 3}
    cells["D3"] = {"값": "숨김"}
    return {
        "종류": "통합문서",
        "판": 1,
        "열": "stab_report",
        "서식": [
            {},
            {"크기": 14, "굵게": True},
            {"채움": "#EEEEEE", "테두리": {"아래": {"선": "medium"}}},
            {"형식": "0.00"},
        ],
        "시트": [
            {
                "id": "s1",
                "이름": "측점표",
                "칸": cells,
                "병합": ["A1:C1", "E5:E8"],
                "열": {"A": {"폭": 12}, "B": {"폭": 6}, "D": {"숨김": True}},
                "행": {"1": {"높이": 24}},
                "틀고정": {"행": 2},
                "인쇄": {
                    "방향": "landscape",
                    "맞춤": {"폭": 1, "높이": 0},
                    "머리행": [2, 2],
                    "쪽나눔": BREAKS,
                },
                "그림": [{"열쇠": "fig/a.png", "닻": "F3:H10", "이름": "단면"}],
            },
            {"id": "s2", "이름": "숨김", "칸": {"A1": {"값": 1}}, "숨김": True},
        ],
        "활성": "s1",
    }


@pytest.fixture(scope="module")
def png() -> bytes:
    try:
        return svgs_to_pngs([SVG])[0]
    except PrintError as error:
        pytest.skip(f"브라우저 없음 — {error}")


def test_svg_png_크기(png):
    from PIL import Image

    assert Image.open(io.BytesIO(png)).size == (240, 120)  # scale 2


def test_인쇄_html(png):
    html = spreadsheet.print_htmls([{"book": _book(), "figures": {"fig/a.png": png}}])[0]
    sheets = re.findall(r'<section class="sheet" data-sheet="(\w+)"', html)
    assert sheets == ["s1"]  # 숨긴 시트 안 찍음
    chunks = html.split('<div class="chunk">')[1:]
    assert len(chunks) == len(BREAKS) + 1
    for chunk in chunks:  # 덩이마다 머리 행 한 줄
        thead = re.search(r"<thead>(.*?)</thead>", chunk).group(1)
        assert thead.count("<tr") == 1 and "측점" in thead
    # 열 폭 = 화면 px 환산(글자 × 7 + 5) · 숨긴 D 빠짐(A B C E F G H = 7)
    widths = re.findall(r'<col style="width:(\d+)px">', chunks[0])
    assert widths[:3] == ["89", "47", "64"] and len(widths) == 7 * 2  # 앞 표(제목) + 본 표
    # 병합 A1:C1 · E5:E8 = 쪽 나눔(6 아래)에서 잘림 — 첫 덩이 5~6 · 둘째 덩이 7~8
    assert 'colspan="3"' in chunks[0] and 'rowspan="2"' in chunks[0] and 'rowspan="2"' in chunks[1]
    assert "rowspan" not in chunks[2]
    assert html.count("<img ") == 1 and "data:image/png;base64," in html
    assert "@page p0{size:A4 landscape" in html
    assert ">46.20<" in html  # 식 값 = 화면 엔진 · 형식 0.00(SUM 0.3..3.0)


def test_xlsx_되읽기(png):
    data = workbook_to_xlsx(_book(), {"fig/a.png": png})
    wb = load_workbook(io.BytesIO(data))
    assert wb.sheetnames == ["측점표", "숨김"]
    ws = wb["측점표"]
    assert sorted(str(m) for m in ws.merged_cells.ranges) == ["A1:C1", "E5:E8"]
    assert [b.id for b in ws.row_breaks.brk] == BREAKS
    assert len(ws._images) == 1
    assert ws.print_title_rows == "$2:$2"
    assert ws["C3"].value == "=SUM(B3:B30)"
    assert ws["B3"].number_format == "0.00" and ws["A1"].font.b
    assert ws.column_dimensions["A"].width == 12 and ws.column_dimensions["D"].hidden
    assert ws.row_dimensions[1].height == 24 and ws.freeze_panes == "A3"
    assert ws.page_setup.orientation == "landscape" and ws.page_setup.fitToWidth == 1
    assert wb["숨김"].sheet_state == "hidden"


def test_pdf_쪽수(png):
    book = _book()
    try:
        pdf = spreadsheet.workbook_pdf(book, {"fig/a.png": png})
    except PrintError as error:
        pytest.skip(f"브라우저 없음 — {error}")
    from pypdf import PdfReader

    pages = PdfReader(io.BytesIO(pdf)).pages
    assert len(pages) == len(BREAKS) + 1
    assert all(float(p.mediabox.width) > float(p.mediabox.height) for p in pages)  # 가로
    assert all("측점" in p.extract_text() for p in pages)  # 머리 행 쪽마다