"""M02 일위대가 실무자료 엑셀꼴 격자(PLAN 329-1) — 올린 엑셀 「일위대가」 · 「단가산출」 시트
(STmate = 「일위대가표」 · 「단가산출근거」 · 338) →
A00 산출근거 스프레드시트 Workbook(`A00_Common/spreadsheet/spreadsheet_types.ts` 꼴 ·
읽기 전용 보기).

xls = xlrd `formatting_info` — 값 · 병합 · 열 폭(÷256 글자) ·
행 높이(÷20 pt · 시트 기본과 다른 것만) · 서식 표(글꼴 · 굵게 · 맞춤 · 줄바꿈 · 테두리 · 채움 ·
숫자 형식) · 틀고정(파일 값 · 없으면 머리 4행).
xlsx = 값만 · 넓은 시트는 머리 글(앞 4 줄) 마지막 열까지 · STmate 숨은 칸 글(「_x0005_`BDCOD…」) 뺌.
결과 `{책, 호표: [{번, 이름, 행}], 단산: [{번, 이름, 행}]}` — 행 = 엑셀 1부터 [시작, 끝].
"""

from __future__ import annotations

import io
from typing import Any

from openpyxl.utils import get_column_letter

from M02_MasterTemplete import M02_Hopyo_Basis as hopyo_basis
from M02_MasterTemplete import M02_Hopyo_Excel as hopyo_excel
from M02_MasterTemplete import M02_Hopyo_Stmate as hopyo_stmate

SHEETS = (hopyo_excel.SHEET, hopyo_basis.SHEET, hopyo_stmate.SHEET, hopyo_stmate.CALC)
HEAD_ROWS = 4
_HALIGN = {1: "left", 2: "center", 3: "right", 6: "centerContinuous", 7: "distributed"}
_VALIGN = {0: "top", 1: "center"}
_LINES = {1: "thin", 2: "medium", 3: "dashed", 4: "dotted", 5: "thick", 6: "double", 7: "hair"}
_SIDES = (("위", "top"), ("아래", "bottom"), ("왼", "left"), ("오른", "right"))


class _Styles:
    """서식 표 — 같은 서식은 한 번만 · [0] = 기본 `{}`."""

    def __init__(self) -> None:
        self.table: list[dict[str, Any]] = [{}]
        self._index: dict[str, int] = {"{}": 0}

    def add(self, style: dict[str, Any]) -> int:
        key = repr(sorted(style.items()))
        if not style:
            return 0
        if key not in self._index:
            self._index[key] = len(self.table)
            self.table.append(style)
        return self._index[key]


def _rgb(book: Any, index: int) -> str | None:
    got = book.colour_map.get(index)
    return "#{:02X}{:02X}{:02X}".format(*got) if got else None


def _xf_style(book: Any, xf: Any, base: Any) -> dict[str, Any]:
    font = book.font_list[xf.font_index]
    out: dict[str, Any] = {}
    if font.name != base.name:
        out["글꼴"] = font.name
    if font.height != base.height:
        out["크기"] = font.height / 20
    for key, on in (
        ("굵게", font.bold),
        ("기울임", font.italic),
        ("밑줄", font.underline_type),
        ("취소선", font.struck_out),
    ):
        if on:
            out[key] = True
    color = _rgb(book, font.colour_index)
    if color and color != "#000000":
        out["글자색"] = color
    if xf.background.fill_pattern == 1 and (fill := _rgb(book, xf.background.pattern_colour_index)):
        out["채움"] = fill
    align = xf.alignment
    if align.hor_align in _HALIGN:
        out["가로"] = _HALIGN[align.hor_align]
    if align.vert_align in _VALIGN:
        out["세로"] = _VALIGN[align.vert_align]
    if align.text_wrapped:
        out["줄바꿈"] = True
    sides = {}
    for name, side in _SIDES:
        line = getattr(xf.border, f"{side}_line_style")
        if line:
            one = {"선": _LINES.get(line, "dashed")}
            color = _rgb(book, getattr(xf.border, f"{side}_colour_index"))
            if color and color != "#000000":
                one["색"] = color
            sides[name] = one
    if sides:
        out["테두리"] = sides
    fmt = book.format_map.get(xf.format_key)
    if fmt and fmt.format_str and fmt.format_str != "General":
        out["형식"] = fmt.format_str
    return out


def _value(cell: Any) -> Any:
    import xlrd

    if cell.ctype == xlrd.XL_CELL_TEXT:
        return cell.value or None
    if cell.ctype in (xlrd.XL_CELL_NUMBER, xlrd.XL_CELL_DATE):
        return int(cell.value) if cell.value == int(cell.value) else cell.value
    if cell.ctype == xlrd.XL_CELL_BOOLEAN:
        return bool(cell.value)
    if cell.ctype == xlrd.XL_CELL_ERROR:
        return xlrd.error_text_from_code.get(cell.value, "#N/A")
    return None


def _xls_sheet(book: Any, sh: Any, styles: _Styles, sid: str) -> dict[str, Any]:
    base = book.font_list[0]
    by_xf: dict[int, int] = {}
    cells: dict[str, dict[str, Any]] = {}
    for r in range(sh.nrows):
        for c in range(sh.ncols):
            cell = sh.cell(r, c)
            if cell.xf_index not in by_xf:
                by_xf[cell.xf_index] = styles.add(
                    _xf_style(book, book.xf_list[cell.xf_index], base)
                )
            one: dict[str, Any] = {}
            if (value := _value(cell)) is not None:
                one["값"] = value
            if by_xf[cell.xf_index]:
                one["서식"] = by_xf[cell.xf_index]
            if one:
                cells[f"{get_column_letter(c + 1)}{r + 1}"] = one
    merged = [
        f"{get_column_letter(c0 + 1)}{r0 + 1}:{get_column_letter(c1)}{r1}"
        for r0, r1, c0, c1 in sh.merged_cells
    ]
    cols = {
        get_column_letter(c + 1): {
            "폭": round(info.width / 256, 2),
            **({"숨김": True} if info.hidden else {}),
        }
        for c, info in sh.colinfo_map.items()
        if c < sh.ncols
    }
    rows = {
        str(r + 1): {"높이": info.height / 20, **({"숨김": True} if info.hidden else {})}
        for r, info in sh.rowinfo_map.items()
        if r < sh.nrows and (info.height != sh.default_row_height or info.hidden)
    }
    frozen = sh.panes_are_frozen and (sh.horz_split_pos or sh.vert_split_pos)
    freeze = {"행": sh.horz_split_pos, "열": sh.vert_split_pos} if frozen else {"행": HEAD_ROWS}
    out = {
        "id": sid,
        "이름": sh.name.strip(),
        "칸": cells,
        "병합": merged,
        "열": cols,
        "행": rows,
        "틀고정": {k: v for k, v in freeze.items() if v},
    }
    if sh.default_row_height:
        out["기본"] = {"행높이": sh.default_row_height / 20}
    return out


def _xls(data: bytes) -> dict[str, Any]:
    import xlrd

    book = xlrd.open_workbook(file_contents=data, formatting_info=True, logfile=io.StringIO())
    styles = _Styles()
    found = {sh.name.strip(): sh for sh in book.sheets()}
    sheets = [
        _xls_sheet(book, found[name], styles, f"s{at}")
        for at, name in enumerate((n for n in SHEETS if n in found), 1)
    ]
    font = book.font_list[0]
    return {
        "기본": {"글꼴": font.name, "크기": font.height / 20},
        "서식": styles.table,
        "시트": sheets,
    }


def _xlsx(name: str, data: bytes) -> dict[str, Any]:
    # ponytail: xlsx 는 값만(병합 · 폭 · 서식은 openpyxl 비 read_only 로 무거움) — 필요하면 그때
    found = hopyo_excel._sheets(name, data)
    sheets = []
    for at, title in enumerate((n for n in SHEETS if n in found), 1):
        rows = found[title]
        width = max(
            (c + 1 for row in rows[:HEAD_ROWS] for c, v in enumerate(row) if v not in (None, "")),
            default=0,
        )
        cells = {
            f"{get_column_letter(c + 1)}{r + 1}": {
                "값": v if isinstance(v, (int, float, bool)) else str(v)
            }
            for r, row in enumerate(rows)
            for c, v in enumerate(row[:width])
            if v not in (None, "") and not str(v).startswith("_x000")  # STmate 숨은 칸 글
        }
        sheets.append({"id": f"s{at}", "이름": title, "칸": cells, "틀고정": {"행": HEAD_ROWS}})
    return {"서식": [{}], "시트": sheets}


def read(name: str, data: bytes, parsed: dict[str, Any]) -> dict[str, Any]:
    """엑셀 → `{책: Workbook, 호표, 단산}` — `parsed` = `M02_Hopyo_Excel.read_book` 결과
    (행 범위)."""
    xlsx = data[:4] == b"PK\x03\x04" or name.lower().endswith(".xlsx")
    book = _xlsx(name, data) if xlsx else _xls(data)
    keep = ("번", "이름", "행")
    return {
        "책": {"종류": "통합문서", "판": 1, "열": "", **book, "활성": "s1"},
        "호표": [{k: h.get(k) for k in keep} for h in parsed.get("호표") or []],
        "단산": [{k: b.get(k) for k in keep} for b in parsed.get("단산") or []],
    }