"""M02 단가산출(SK) 수식 길(PLAN 802-4a 4) — `M02_Doc_Sk_Path` 를 층 권한 안에서.

    GET  /api/m02/layers/{층}/sangeun/{키}/doc            읽기(층 읽기) → {문서, 부름, 끊음, 셈, 사본, 판}
    POST /api/m02/layers/{층}/sangeun/{키}/doc/preview    미리 셈(층 쓰기) {문서?, 끊음?, 할일?}
                                                           → {…, 전, 후, 바뀐자원?, 버림?}
    POST /api/m02/layers/{층}/sangeun/{키}/doc/save       저장(층 쓰기) {문서?, 끊음?, 할일?, 판} → 읽기 꼴
    POST /api/m02/layers/{층}/sangeun/{키}/match {할일 찾기|바꾸기|되돌리기, 판?}(층 쓰기 · 810-4)
                                                           → {연결후보?, 판}(바꾸기 = 확정만 · 아니면 409)
⚠ 등록은 `main.py`(로그인만 · 층 권한은 길 안에서).
"""

from __future__ import annotations

from typing import Any

from fastapi import APIRouter, Depends
from pydantic import BaseModel

from common_util.common_util_auth import verify_session
from M02_MasterTemplete import M02_Doc_Sk_Path as path
from M02_MasterTemplete.M02_MasterTemplete_Router_Items import Layer, Session, _call, _root

router = APIRouter(prefix="/api/m02", tags=["M02 MasterTemplete Sangeun Doc"])


class DocBody(BaseModel):
    문서: dict[str, Any] | None = None
    끊음: dict[str, Any] | None = None
    할일: str | None = None
    판: str | None = None
    단가기준: str | None = None  # 가져온 식만(807-1 · 엑셀 | 우리)


@router.get("/layers/{layer}/sangeun/{key}/doc")
def read_doc(
    layer: Layer, key: str, owner: str | None = None, session: Session = Depends(verify_session)
) -> dict:
    return _call(_root(session, layer, owner), path.read, key)


@router.post("/layers/{layer}/sangeun/{key}/doc/preview")
def preview_doc(
    layer: Layer,
    key: str,
    body: DocBody,
    owner: str | None = None,
    session: Session = Depends(verify_session),
) -> dict:
    folder = _root(session, layer, owner, write=True)
    return _call(folder, path.preview, key, body.model_dump(exclude_none=True))


class MatchBody(BaseModel):
    할일: str = "찾기"  # 찾기 | 바꾸기 | 되돌리기(810-4)
    판: str | None = None


@router.post("/layers/{layer}/sangeun/{key}/match")
def match_doc(
    layer: Layer,
    key: str,
    body: MatchBody,
    owner: str | None = None,
    session: Session = Depends(verify_session),
) -> dict:
    """가져온 식 ↔ 우리 기초(810-4) — 찾기(연결후보 적음) · 바꾸기(확정만 · M01 사본 SK) · 되돌리기."""
    from fastapi import HTTPException

    from M02_MasterTemplete import M02_Doc_MatchSk as msk

    jobs = {"찾기": msk.find, "바꾸기": msk.swap, "되돌리기": msk.back}
    if body.할일 not in jobs:
        raise HTTPException(status_code=400, detail="찾기 · 바꾸기 · 되돌리기")
    folder = _root(session, layer, owner, write=True)
    return _call(folder, jobs[body.할일], key, body.판 or "")


@router.post("/layers/{layer}/sangeun/{key}/doc/save")
def save_doc(
    layer: Layer,
    key: str,
    body: DocBody,
    owner: str | None = None,
    session: Session = Depends(verify_session),
) -> dict:
    folder = _root(session, layer, owner, write=True)
    return _call(folder, path.save, key, body.model_dump(exclude_none=True))