from fastapi import APIRouter
from pydantic import BaseModel

INDEX = "拨备覆盖率-商业银行（%）"

router = APIRouter()


class Params(BaseModel):
    贷款损失准备: float
    不良贷款余额: float


# 计算接口
@router.post("/{}".format(INDEX))
def func(p: Params):
    try:
        result = p.贷款损失准备 / p.不良贷款余额 * 100
        return round(result, 6)

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