from fastapi import APIRouter
from pydantic import BaseModel

INDEX = "EBIT利息保障倍数（倍）"

router = APIRouter()


class Params(BaseModel):
    净利润: float
    计入财务费用的利息支出: float
    所得税: float
    资本化利息支出: float


@router.post("/{}".format(INDEX))
def func(p: Params):
    try:
        m = p.净利润 + p.计入财务费用的利息支出 + p.所得税
        d = p.计入财务费用的利息支出 + p.资本化利息支出
        result = m / d
        return round(result, 6)

    except ZeroDivisionError:
        return "+inf"  # 此处本应为算式无意义，特殊处理为正无穷大
    except Exception:
        return "计算错误"