"""公共配置 API：/api/config（全局唯一一份费率/滑点/复权口径）。

GET  /api/config   读取（未配置过返回带默认值的实例）
PUT  /api/config   更新（upsert 单例）
"""

from __future__ import annotations

from fastapi import APIRouter

from app.api.deps import DbSession, GlobalConfigRepoDep
from app.domain.entities.combo import GlobalConfig

router = APIRouter(prefix="/config", tags=["config"])


@router.get("", response_model=GlobalConfig, summary="读取公共配置")
def get_config(repo: GlobalConfigRepoDep) -> GlobalConfig:
    return repo.get()


@router.put("", response_model=GlobalConfig, summary="更新公共配置")
def update_config(
    config: GlobalConfig,
    repo: GlobalConfigRepoDep,
    session: DbSession,
) -> GlobalConfig:
    saved = repo.save(config)
    session.commit()
    return saved