"""
资产负债率
"""
from fastapi import APIRouter, HTTPException
from pydantic import BaseModel

from Common.schemas import IndicatorDescription

router = APIRouter()

# 指标描述
ENAME = "gearing_ratio"
CNAME = "资产负债率"
NATURE = "定量"
CATEGORY = "经营指标"
DESCRIPTION = "资产负债率 = 负债合计 / 资产总计"

# 参数描述
PARAM1_ENAME = "total_liabilities"
PARAM1_CNAME = "负债合计"
PARAM1_DESCR = "资产负债表-负债合计"

PARAM2_ENAME = "total_assets"
PARAM2_CNAME = "资产总计"
PARAM2_DESCR = "资产负债表-资产总计"


# 输入参数
class Parameter(BaseModel):
    total_liabilities: float = "负债合计"
    total_assets: float = "资产总计"


# 计算接口
@router.post("/{}/".format(ENAME), tags=[CATEGORY], summary=CNAME, description=DESCRIPTION)
def calculation(parameter: Parameter):
    try:
        result = parameter.total_liabilities / parameter.total_assets
        return round(result, 6)
    except ZeroDivisionError:
        return "+inf"
    except Exception:
        raise HTTPException(status_code=400, detail="Calculate Failed")


# 描述接口
@router.get("/{}/description".format(ENAME),
            response_model=IndicatorDescription,
            tags=[CATEGORY], summary=CNAME, description=DESCRIPTION)
def description():

    body = {
        "ename": ENAME,
        "cname": CNAME,
        "nature": NATURE,
        "category": CATEGORY,
        "description": DESCRIPTION,
        "parameters": [
            {"ename": PARAM1_ENAME, "cname": PARAM1_CNAME, "description": PARAM1_DESCR},
            {"ename": PARAM2_ENAME, "cname": PARAM2_CNAME, "description": PARAM2_DESCR}
        ],
    }

    return body