from typing import cast

from channels.layers import BaseChannelLayer, get_channel_layer
from rest_framework.decorators import action
from rest_framework.request import Request
from rest_framework.response import Response
from rest_framework.viewsets import ViewSet

from wechat_数据库.微信支付券.代金券数据库 import stock券数据表
from wechat_项目工具包.微信支付工具包.领优惠券工具包 import stock发送代金券功能

default_channel_layer = cast(BaseChannelLayer, get_channel_layer(alias="default"))

from functools import wraps
import threading


def sync_lock(lock):
    def decorator(fn):
        @wraps(fn)
        def wrapper(*args, **kwargs):
            with lock:
                return fn(*args, **kwargs)
        
        return wrapper
    
    return decorator


class 小程序发优惠券到钱包接口ViewSets(ViewSet):
    lock = threading.Lock()  # 所有请求 共享这一个 lock对象
    
    @action(detail=False, methods=["get", "post", "put", "delete"], url_path="生成优惠券")
    def 生成优惠券(self, request: Request):
        """这里的接口就是将,券,直接发送给前端用户,"""
        self_mini_openid = request.data.get("self_mini_openid", None)
        self_mini_unionid = request.data.get("self_mini_unionid", None)
        print(self_mini_openid, self_mini_unionid)
        stock查询数据领券成功时的处理: stock券数据表 | None = stock券数据表.objects.filter(mini_unionid=self_mini_unionid, mini_openid=self_mini_openid, stock_use_券状态="已领券").first()
        if stock查询数据领券成功时的处理 is not None:
            return Response(data={"stock券状态": "已领券", "stock领券数据": {}})
        stock查询数据: stock券数据表 | None = stock券数据表.objects.filter(mini_unionid=self_mini_unionid, mini_openid=self_mini_openid, stock_use_券状态="待领券").first()
        print(stock查询数据, "在这里查询到的结果")
        if stock查询数据 is None:
            # 查询数据库,看看用户当前有没有券已发了但是还没有领取的状态
            # stock发券数据 = stock发送代金券功能(stock_id_代金券批次号="22512292").send发券并返回前端需要的数据()
            stock发券数据 = stock发送代金券功能(stock_id_代金券批次号="22625737", stock券的状态="待领券").send发券并返回前端需要的数据(self_mini_openid=self_mini_openid, self_mini_unionid=self_mini_unionid)
            # 4. 生成签名
            # return Response(data=stock发券数据)
            return Response(data={"stock券状态": "待领券", "stock领券数据": stock发券数据})
        else:
            pass
            print("查询是这里生效了啦")
            return Response(data={"stock券状态": stock查询数据.stock_use_券状态, "stock领券数据": stock查询数据.stock_未领取券的数据})
    
    @action(detail=False, methods=["get", "post", "put", "delete"], url_path="领券后更新当前券的状态")
    def 领券后更新当前券的状态(self, request: Request):
        pass
        self_mini_openid = request.data.get("self_mini_openid", None)
        self_mini_unionid = request.data.get("self_mini_unionid", None)
        stock券状态 = request.data.get("stock券状态", None)
        print("用户领券成功了")
        stock发送代金券功能(stock_id_代金券批次号="22625737", stock券的状态=stock券状态, stock券已领券="已领券").领券后更新当前券的状态(self_mini_openid=self_mini_openid, self_mini_unionid=self_mini_unionid)
        return Response(data={"stock券状态": stock券状态, "stock领券数据": {}})