import sys
from django.shortcuts import render
from django.http import HttpResponse
from rest_framework.decorators import api_view
from rest_framework.response import Response
from drf_spectacular.utils import extend_schema, OpenApiParameter, OpenApiTypes

from .stock.stock_utils import viewFunc_tsCodeAndDate, viewFunc_singleParam
from .stock.stock_basic import getStockBasic, getStockListByIndustry, getStockInfo
from .stock.getStockParam import getStockParam
from .stock.getStockEp import getStockEp_ttm, get_quarterly_eps
from .stock.getIndexs import get_index_daily_data, get_index_by_name
from .stock.stockMargin import getStockMargin, getDailyMargin
from .stock.getStockFina import get_finance_data_range
from .stock.getStockDiv2 import analyze_stock_dividend_and_price
from .stock.xwlbDaily import get_xwlb, get_xwlb_fine
from .stock.getDivData_AK import get_akshare_dividend_yield
from .serializers import (
    StockDailySerializer, StockInfoSerializer, IndustryStockSerializer,
    StockParamSerializer, StockEpSerializer, QuarterlyEpsSerializer,
    IndexInfoSerializer, IndexDailySerializer, MarginDailySerializer,
    StockMarginSerializer, FinanceDataSerializer, DividendSerializer,
    XwlbNewsSerializer,
)

# === 通用参数定义（复用） ===
_PARAM_TSCODE = OpenApiParameter(name='tscode', type=str, default='000001.SZ',
                                  description='股票代码，如 000001.SZ')
_PARAM_INDEX_CODE = OpenApiParameter(name='tscode', type=str, default='000001.SH',
                                      description='指数代码，如 000001.SH=上证指数, 399001.SZ=深证成指, 399006.SZ=创业板指')
_PARAM_START = OpenApiParameter(name='start_date', type=str, default='20200101',
                                 description='起始日期 yyyyMMdd')
_PARAM_END = OpenApiParameter(name='end_date', type=str, default='20251231',
                               description='结束日期 yyyyMMdd')
_PARAM_INDEX_NAME = OpenApiParameter(name='index_name', type=str, default='沪深300',
                                      description='指数名称，如 沪深300、上证50')
_PARAM_INDUSTRY = OpenApiParameter(name='industry', type=str, required=True,
                                    description='行业名称，如 银行、半导体')
_PARAM_TRADE_DATE = OpenApiParameter(name='trade_date', type=str,
                                      description='交易日期 yyyyMMdd')
_PARAM_EXCHANGE_ID = OpenApiParameter(name='exchange_id', type=str,
                                       description='交易所代码 SSE/SZSE')


@extend_schema(
    responses={200: OpenApiTypes.STR},
    description='返回服务器 Python 版本',
    tags=['系统'],
)
@api_view(['GET'])
def python_version(request):
    return HttpResponse(f"Python Version: {sys.version}")


@extend_schema(exclude=True)
@api_view(['GET'])
def home(request):
    return render(request, 'home.html')


@extend_schema(
    parameters=[_PARAM_TSCODE, _PARAM_START, _PARAM_END],
    responses={200: StockDailySerializer(many=True)},
    description='获取个股日线行情数据（开高低收、成交量、成交额）',
    tags=['行情'],
)
@api_view(['GET'])
def stockbasic(request):
    return viewFunc_tsCodeAndDate(request, getStockBasic)


@extend_schema(
    parameters=[_PARAM_INDUSTRY],
    responses={200: IndustryStockSerializer(many=True)},
    description='按申万行业分类查询成分股列表',
    tags=['基础数据'],
)
@api_view(['GET'])
def industrys(request):
    return viewFunc_singleParam(request, getStockListByIndustry, param_name='industry')


@extend_schema(
    parameters=[_PARAM_TSCODE],
    responses={200: StockInfoSerializer()},
    description='获取个股基本信息（名称、行业、上市日期、交易所等）',
    tags=['基础数据'],
)
@api_view(['GET'])
def stockInfo(request):
    return viewFunc_singleParam(request, getStockInfo, param_name='tscode')


@extend_schema(
    parameters=[_PARAM_TSCODE, _PARAM_START, _PARAM_END],
    responses={200: StockParamSerializer(many=True)},
    description='获取个股每日参数（市值、PE/PB/PS、换手率等）',
    tags=['行情'],
)
@api_view(['GET'])
def stockparam(request):
    return viewFunc_tsCodeAndDate(request, getStockParam)


@extend_schema(
    parameters=[_PARAM_TSCODE, _PARAM_START, _PARAM_END],
    responses={200: StockEpSerializer(many=True)},
    description='获取个股 TTM 每股收益（EPS）',
    tags=['财务'],
)
@api_view(['GET'])
def stockep(request):
    return viewFunc_tsCodeAndDate(request, getStockEp_ttm)


@extend_schema(
    parameters=[_PARAM_TSCODE, _PARAM_START, _PARAM_END],
    responses={200: QuarterlyEpsSerializer(many=True)},
    description='获取个股季度每股收益（EPS），按财报日期对齐',
    tags=['财务'],
)
@api_view(['GET'])
def quarterlyEps(request):
    return viewFunc_tsCodeAndDate(request, get_quarterly_eps)


@extend_schema(
    parameters=[_PARAM_INDEX_NAME],
    responses={200: IndexInfoSerializer()},
    description='按名称模糊查询指数基本信息',
    tags=['指数'],
)
@api_view(['GET'])
def indexByName(request):
    index_name = request.GET.get('index_name', '沪深300')
    if not index_name:
        return Response({'error': '缺少 index_name 参数'}, status=400)
    try:
        data = get_index_by_name(index_name)
        dict_data = data.to_dict(orient='records')
        return Response(dict_data)
    except ImportError:
        return Response({'error': '模块不存在'}, status=500)
    except Exception as e:
        return Response({'error': str(e)}, status=500)


@extend_schema(
    parameters=[_PARAM_INDEX_CODE, _PARAM_START, _PARAM_END],
    responses={200: IndexDailySerializer(many=True)},
    description='获取指数日线行情数据（含 PE/PB/市值/换手率等扩展指标）',
    tags=['指数'],
)
@api_view(['GET'])
def indexDatas(request):
    return viewFunc_tsCodeAndDate(request, get_index_daily_data)


@extend_schema(
    parameters=[_PARAM_TSCODE, _PARAM_START, _PARAM_END],
    responses={200: StockMarginSerializer(many=True)},
    description='获取个股融资融券明细数据',
    tags=['融资融券'],
)
@api_view(['GET'])
def stockMargin(request):
    return viewFunc_tsCodeAndDate(request, getStockMargin)


@extend_schema(
    parameters=[_PARAM_TRADE_DATE, _PARAM_START, _PARAM_END, _PARAM_EXCHANGE_ID],
    responses={200: MarginDailySerializer(many=True)},
    description='获取每日融资融券汇总数据（按交易所）',
    tags=['融资融券'],
)
@api_view(['GET'])
def dailyMargin(request):
    trade_date = request.GET.get('trade_date', None)
    start_date = request.GET.get('start_date', None)
    end_date = request.GET.get('end_date', None)
    exchange_id = request.GET.get('exchange_id', None)

    try:
        data = getDailyMargin(trade_date=trade_date, start_date=start_date,
                              end_date=end_date, exchange_id=exchange_id)
        dict_data = data.to_dict(orient='records')
        return Response(dict_data)
    except ImportError:
        return Response({'error': '模块不存在'}, status=500)
    except Exception as e:
        return Response({'error': str(e)}, status=500)


@extend_schema(
    parameters=[_PARAM_TSCODE, _PARAM_START, _PARAM_END],
    responses={200: FinanceDataSerializer(many=True)},
    description='获取个股财务报表分析数据（资产负债表+利润表+现金流，含运营/资产/负债/回报率指标）',
    tags=['财务'],
)
@api_view(['GET'])
def getFinaData(request):
    return viewFunc_tsCodeAndDate(request, get_finance_data_range)


@extend_schema(
    parameters=[_PARAM_TSCODE, _PARAM_START, _PARAM_END],
    responses={200: DividendSerializer(many=True)},
    description='获取个股股息率数据（含 TTM 分红、收盘价、股息率）',
    tags=['分红'],
)
@api_view(['GET'])
def getDivData(request):
    return viewFunc_tsCodeAndDate(request, analyze_stock_dividend_and_price)


@extend_schema(
    parameters=[_PARAM_TSCODE, _PARAM_START, _PARAM_END],
    responses={200: DividendSerializer(many=True)},
    description='获取个股股息率数据（akshare 数据源，无需 token）',
    tags=['分红'],
)
@api_view(['GET'])
def getDivDataAkshare(request):
    return viewFunc_tsCodeAndDate(request, get_akshare_dividend_yield)


def _xwlb_view(request, data_func):
    start_date = request.GET.get('start_date', None)
    end_date = request.GET.get('end_date', None)
    try:
        data = data_func(start_date=start_date, end_date=end_date)
        dict_data = data.to_dict(orient='records')
        status = "success" if dict_data else "Error"
        return Response({"status": status, "data": {"news": dict_data}})
    except ImportError:
        return Response({'error': '模块不存在'}, status=500)
    except Exception as e:
        return Response({'error': str(e)}, status=500)


@extend_schema(
    parameters=[_PARAM_START, _PARAM_END],
    responses={200: XwlbNewsSerializer(many=True)},
    description='获取新闻联播原始识别文本（ASR 转写结果）',
    tags=['新闻联播'],
)
@api_view(['GET'])
def xwlbNews(request):
    return _xwlb_view(request, get_xwlb)


@extend_schema(
    parameters=[_PARAM_START, _PARAM_END],
    responses={200: XwlbNewsSerializer(many=True)},
    description='获取新闻联播精编内容（AI 分割+标题提取后的独立新闻）',
    tags=['新闻联播'],
)
@api_view(['GET'])
def xwlbFine(request):
    return _xwlb_view(request, get_xwlb_fine)