from fastapi import APIRouter
from pydantic import BaseModel


INDEX = "CFO/总债务（倍）"

router = APIRouter()


class Params(BaseModel):
    短期借款: float
    长期借款: float
    经营性现金流净额: float


@router.post("/{}".format(INDEX))
def func(p: Params):
    try:
        result = p.经营性现金流净额 / (p.短期借款 + p.长期借款)
        return round(result, 6)

    except ZeroDivisionError:
        return "算式无意义"
    except Exception:
        return "计算错误"