"""B09 원가계산 — **표토제거 답외구간** 9-15-2 (2026-09-14 브레인 ㉰ 첫째).

B08 준비공 「표토제거」 줄이 부르는 코드인데 표가 계수표(T·L·E·q0·e·f·V1·V2·t)라 일위대가가 안 섰음.

    q = q0 × e · ㎝ = L/V1 + L/V2 + t · Q1 = 60 × q × f × E / ㎝ (㎥/hr) · Q = Q1 / T (㎡/hr)
    [주]① 무한궤도 불도저(19ton) · ③ 건설품셈 8-2-1 불도저 참조 → 불도저 식(`dozer_hourly_output`) 그대로 + T 로 나눔
    기종은 표의 q0·V1·V2(1단)로 8-2-1 표에서 되짚음(`resolve_dozer`) — [주]① 19ton 과 맞는지 시험이 봄

⚠ 실무 영월 호표 Q=576.95 는 E 자리에 e(0.96)를 넣은 값 — 원문이 또렷해 원문 E 로 셈(까닭은 `KnownGaps`).
"""

from __future__ import annotations

import re
from decimal import Decimal
from typing import Any

CODE = "FP-09-15-02"
TABLE = "F0282"
_RE_SYMBOL = re.compile(r"^([A-Za-z]\d?)\s*\(")
_RE_GEAR = re.compile(r"(\d+)\s*단")


def _factors(node: dict[str, Any]):
    """(불도저 계수, T) — 칸이 모자라거나 기종이 안 좁혀지면 까닭 글."""
    from B09_Estimation.B09_Estimation_MachineProductivity import parse_measure
    from B09_Estimation.B09_Estimation_MachineProductivity_Dozer import DozerFactors, resolve_dozer

    table = next((t for t in node.get("tables") or [] if t.get("pum_table_id") == TABLE), {})
    values: dict[str, Decimal] = {}
    gear = 1
    for row in table.get("raw_row") or []:
        found = _RE_SYMBOL.match(str(row[0]).strip()) if row else None
        value = parse_measure(str(row[1])) if found and len(row) > 1 else None
        if value is not None:
            values[found.group(1)] = value
            shift = _RE_GEAR.search(str(row[1]))
            gear = int(shift.group(1)) if shift else gear
    missing = [k for k in ("T", "L", "E", "q0", "e", "f", "V1", "V2") if k not in values]
    if missing:
        return f"9-15-2 표 칸 없음: {', '.join(missing)}"
    machine = resolve_dozer(values["q0"], values["V1"], values["V2"], gear)
    if machine is None:
        return f"삽날 {values['q0']}㎥ · {values['V1']}/{values['V2']}m/분({gear}단) 으로 불도저가 안 좁혀짐"
    factors = DozerFactors(
        work_item_code=CODE,
        blade_capacity_m3=values["q0"],
        distance_factor=values["e"],
        volume_factor=values["f"],
        efficiency=values["E"],
        haul_distance_m=values["L"],
        forward_speed_m_min=values["V1"],
        reverse_speed_m_min=values["V2"],
        machine_code=machine[0],
        machine_name=machine[1],
    )
    return factors, values["T"]


def topsoil_output(node: dict[str, Any] | None = None) -> tuple[Decimal, Decimal]:
    """(Q1 ㎥/hr, Q ㎡/hr) — 둘 다 소수 2자리로 확정한 뒤 씀(명세 7장)."""
    from B09_Estimation.B09_Estimation_MachineProductivity import fix2
    from B09_Estimation.B09_Estimation_MachineProductivity_Dozer import dozer_hourly_output
    from B09_Estimation.B09_Estimation_ResourceAxis import load_work_item_master

    if node is None:
        node = next(n for n in load_work_item_master()["work_items"] if n["work_item_code"] == CODE)
    found = _factors(node)
    if isinstance(found, str):
        raise ValueError(found)
    factors, thickness = found
    q1 = dozer_hourly_output(factors)
    return q1, fix2(q1 / thickness)


def attach_topsoil_removal(build: Any, nodes_by_code: dict[str, dict[str, Any]]) -> None:
    """`B-FP-09-15-02` — 불도저 1/Q hr/㎡ 한 줄(D). 기계 층이 없거나 표가 달라지면 까닭만."""
    from B09_Estimation.B09_Estimation_PriceBook import PriceKind, PriceTitle

    node = nodes_by_code.get(CODE)
    title_code = f"B-{CODE}"
    if node is None or title_code in build.book.titles:
        return
    found = _factors(node)
    if isinstance(found, str):
        build.component_gaps[CODE] = found
        return
    factors, thickness = found
    hourly = f"X-{factors.machine_code}"
    if hourly not in build.book.titles:
        build.component_gaps[CODE] = f"{factors.machine_name} 시간당 사용료가 안 섬"
        return
    q1, q = topsoil_output(node)
    build.book.add_title(
        PriceTitle(
            code=title_code,
            kind=PriceKind.UNIT_PRICE,
            name=str(node.get("name") or CODE),
            spec="표토제거",
            unit="㎡",
        )
    )
    build.book.add_output_detail(
        title_code,
        hourly,
        Decimal(1) / q,
        f"{factors.formula_text} → Q = Q1 {q1} ÷ T {thickness}m = {q} ㎡/hr"
        " (산림품셈 9-15-2 [주]②③ · 건설 8-2-1)",
        output=q,
    )
    if CODE in build.skipped:
        build.skipped.remove(CODE)