from django.contrib.auth.models import Group
from django.db.models import Sum
from rest_framework import status
from rest_framework.response import Response
from rest_framework.views import APIView
from rest_framework.viewsets import ModelViewSet
from rolepermissions.roles import get_user_roles

from basic.models import Menu, RouterMenu, GroupRouterMenu
from basic.serializer import MenuSerializer, RouterMenuSerializer, GroupRouterMenuSerializer
from payment.models import Payment


class MenuView(ModelViewSet):
    queryset = Menu.objects.all()
    serializer_class = MenuSerializer
    pagination_class = None
    filter_fields = {'code': ['exact'], 'parent': ['exact']}


class StatisticsView(APIView):
    def get(self, request):
        data = list(
            Payment.objects.values('payment_type').annotate(price_sum=Sum('index_price')).order_by('-price_sum'))
        return Response(data, status=status.HTTP_200_OK)


class GroupRouterMenuView(APIView):
    queryset = Menu.objects.all()
    serializer_class = GroupRouterMenuSerializer
    pagination_class = None

    def get(self, request):
        user = request.user

        if user.is_superuser:
            return Response(RouterMenu.objects.all().values(), status=status.HTTP_200_OK)

        role = get_user_roles(user)
        # 根据当前用户的角色获取角色id
        roleArr = Group.objects.filter(name__in=[r.get_name() for r in role]).all().values('id')
        # 根据角色id查到所有相关的角色与菜单对应的记录
        menu = GroupRouterMenu.objects.filter(group_id__in=[arr['id'] for arr in roleArr]).all()
        # 生成菜单列表
        data = [RouterMenuSerializer(m.menu).data for m in menu]
        return Response(data, status=status.HTTP_200_OK)


class RouterMenuView(ModelViewSet):
    queryset = Menu.objects.all()
    serializer_class = RouterMenuSerializer
    pagination_class = None