from fastapi import APIRouter
from pydantic import BaseModel

INDEX = "期间费用率（%）"

router = APIRouter()


class Params(BaseModel):
    财务费用: float
    管理费用: float
    销售费用: float
    营业收入: float


# 计算接口
@router.post("/{}".format(INDEX))
def func(p: Params):
    try:
        d = p.财务费用 + p.管理费用 + p.销售费用
        result = d / p.营业收入 * 100
        return round(result, 6)

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