"""
总资产报酬率
"""
from fastapi import APIRouter, HTTPException
from pydantic import BaseModel

from Common.schemas import IndicatorDescription

router = APIRouter()

# 指标描述
ENAME = "return_on_total_assets"
CNAME = "总资产报酬率"
NATURE = "定量"
CATEGORY = "盈利能力"
DESCRIPTION = ""

# 参数描述
PARAM1_ENAME = "the_total_profit"
PARAM1_CNAME = "利润总额"
PARAM1_DESCR = "利润表科目，指息税前利润。"

PARAM2_ENAME = "interest_expense"
PARAM2_CNAME = "利息费用"
PARAM2_DESCR = "利润表科目，营业总成本的子项。指借款的利息支出。"

PARAM3_ENAME = "current_total_assets"
PARAM3_CNAME = "资产合计（期末）"
PARAM3_DESCR = "资产负债表科目，指企业拥有或控制的能以货币计量的经济资源。"

PARAM4_ENAME = "last_total_assets"
PARAM4_CNAME = "资产合计（期初）"
PARAM4_DESCR = "资产负债表科目，指企业拥有或控制的能以货币计量的经济资源。"


class Parameter(BaseModel):
    the_total_profit: float = "利润总额"
    interest_expense: float = "利息费用"
    current_total_assets: float = "资产总计（期末）"
    last_total_assets: float = "资产总计（期初）"


# 计算接口
@router.post("/{}/".format(ENAME), tags=[CATEGORY], summary=CNAME, description=DESCRIPTION)
def calculation(parameter: Parameter):
    try:
        avg_total_assets = (parameter.current_total_assets + parameter.last_total_assets) / 2
        result = (parameter.the_total_profit + parameter.interest_expense) / avg_total_assets
        return round(result, 6)

    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