"""M01 마스터 데이터 관리자 API — 계약 `resources/master_data/_화면_계약.md`.

⚠ 권한은 등록하는 쪽(`main.py`)이 `system_admin_only` 로 붙임.
"""

from __future__ import annotations

from decimal import Decimal
from typing import Any, Literal

from fastapi import APIRouter, HTTPException
from pydantic import BaseModel

from M01_MasterData import M01_MasterData_Store as store
from M01_MasterData import M01_MasterData_Store_Make as make

router = APIRouter(prefix="/api/m01", tags=["M01 MasterData"])


class CalcBody(BaseModel):
    key: str
    inputs: dict[str, Any] = {}
    row: dict[str, Any] | None = None  # 저장 전 고친 로직 줄(없으면 저장된 파일로)
    file: str | None = None  # 새 로직이면 더할 로직 파일


class Change(BaseModel):
    op: Literal["edit", "add", "delete"]
    key: str | None = None
    row: dict[str, Any] | None = None


class FileChanges(BaseModel):
    file: str
    version: str
    changes: list[Change]


class SaveBody(BaseModel):
    files: list[FileChanges]


class NewLogic(BaseModel):
    logic: dict[str, Any]
    owner: str = make.OWNERS[0]


class CopyLogic(BaseModel):
    key: str
    이름: str = ""
    owner: str = make.OWNERS[0]


class EditLogic(BaseModel):
    key: str
    version: str
    logic: dict[str, Any]
    owner: str = ""


class DeleteLogic(BaseModel):
    key: str
    version: str


def _num(v):
    """Decimal → JSON 수(그냥 두면 글자로 나감)."""
    if isinstance(v, Decimal):
        return int(v) if v == v.to_integral_value() else float(v)
    if isinstance(v, list):
        return [_num(x) for x in v]
    if isinstance(v, dict):
        return {k: _num(x) for k, x in v.items()}
    return v


def _call(fn, *args):
    try:
        return _num(fn(*args))
    except store.StoreError as e:
        raise HTTPException(status_code=e.status, detail=e.detail) from e


@router.get("/groups")
def get_groups() -> dict:
    return {"groups": _call(store.groups)}


@router.get("/groups/{group}/files")
def get_files(group: str) -> dict:
    return {"files": _call(store.files_of, group)}


@router.get("/subs")
def get_subs(file: str = "", group: str = "") -> dict:
    return _call(store.subs, file, group)


@router.get("/rows")
def get_rows(
    file: str,
    page: int = 1,
    size: int = 50,
    q: str = "",
    unlinked: bool = False,
    sub: str = "",
    detail: str = "",
    state: str = "",
) -> dict:
    return _call(store.rows, file, page, size, q, unlinked, sub, detail, state)


@router.get("/tables")
def get_tables(
    file: str = "",
    group: str = "",
    sub: str = "",
    detail: str = "",
    q: str = "",
    page: int = 1,
    size: int = 30,
    usage: str = "",
    section: str = "",
) -> dict:
    return _call(store.tables, file, group, sub, detail, q, page, size, usage, section)


@router.get("/table")
def get_table(file: str, key: str) -> dict:
    return _call(store.table, file, key)


@router.get("/table/options")
def get_table_options(file: str, key: str) -> dict:
    """표 조건 칸의 값만 — 줄을 통째로 받지 않음."""
    return _call(make.table_options, file, key)


@router.get("/sections")
def get_sections(
    book: str, division: str = "", chapter: str = "", q: str = "", limit: int = 200
) -> dict:
    """원문 절 목록 — 만들기 첫 걸음."""
    return _call(make.sections, book, division, chapter, q, limit)


@router.get("/logics")
def get_logics(
    sub: str = "", detail: str = "", q: str = "", blocked: int | None = None, owner: str = ""
) -> dict:
    return {"logics": _call(store.logics, sub, detail, q, blocked, owner)}


@router.get("/logic")
def get_logic(key: str) -> dict:
    return _call(store.logic, key)


@router.get("/elements")
def get_elements(group: str, q: str = "", limit: int = 50) -> dict:
    return _call(store.elements, group, q, limit)


@router.get("/pick")
def get_pick(kind: str, q: str = "", limit: int = 50) -> dict:
    return _call(store.pick, kind, q, limit)


@router.get("/materials")
def get_materials(
    sub: str,
    detail: str = "",
    spec: str = "",
    region: str = "",
    unit: str = "",
    limit: int = 50,
) -> dict:
    """재료 고르기 조건 안 후보 — sub = 구분 · detail = 상세구분 · spec = 규격 · region = 자재지역
    · unit = 호표 줄 단위(주면 그 단위 줄만)."""
    return _call(store.materials, sub, detail, spec, region, unit, limit)


@router.post("/calc")
def post_calc(body: CalcBody) -> dict:
    return _call(store.calc, body.key, body.inputs, body.row, body.file)


@router.post("/text")
def post_text(body: CalcBody) -> dict:
    """읽는 식 줄 — 몸은 `/calc` 와 같음."""
    return _call(store.text, body.key, body.inputs, body.row, body.file)


@router.post("/save")
def post_save(body: SaveBody) -> dict:
    return {"files": _call(store.save, [f.model_dump() for f in body.files])}


@router.post("/logic/new")
def post_logic_new(body: NewLogic) -> dict:
    return _call(make.logic_new, body.logic, body.owner)


@router.post("/logic/copy")
def post_logic_copy(body: CopyLogic) -> dict:
    return _call(make.logic_copy, body.key, body.이름, body.owner)


@router.post("/logic/edit")
def post_logic_edit(body: EditLogic) -> dict:
    return _call(make.logic_edit, body.key, body.version, body.logic, body.owner)


@router.post("/logic/delete")
def post_logic_delete(body: DeleteLogic) -> dict:
    return _call(make.logic_delete, body.key, body.version)