from rest_framework import viewsets
from utils.page import MyPageNumberPagination
from utils.datasolve import sumOfList, transportation_calculate
from utils.md5 import Md5
from rest_framework.filters import OrderingFilter
from django_filters.rest_framework import DjangoFilterBackend
from rest_framework.response import Response
from rest_framework.exceptions import APIException
from django.utils import timezone

from django.db import transaction
import logging
from rest_framework import status
from .models import DeviceModel,LocationModel,LocationContainerLink,LocationChangeLog
from bound.models import BoundBatchModel,BoundDetailModel,BoundListModel


from .filter import DeviceFilter,LocationFilter,LocationContainerLinkFilter,LocationChangeLogFilter
from .serializers import LocationListSerializer,LocationPostSerializer
# 以后添加模块时，只需要在这里添加即可
from rest_framework.permissions import AllowAny

logger = logging.getLogger(__name__)

class locationViewSet(viewsets.ModelViewSet):
    """
        retrieve:
            Response a data list（get）
            list:
            Response a data list（all）
        create:
            Create a data line（post）

        delete:
            Delete a data line（delete)

    """
    # authentication_classes = []  # 禁用所有认证类
    # permission_classes = [AllowAny]  # 允许任意访问
    
    pagination_class = MyPageNumberPagination   
    filter_backends = [DjangoFilterBackend, OrderingFilter, ]
    ordering_fields = ['id', "create_time", "update_time", ]
    filter_class = LocationFilter

    def get_project(self):
        try:
            id = self.kwargs.get('pk')
            return id
        except:
            return None

    def get_queryset(self):
        id = self.get_project()
        if self.request.user:
            if id is None:
                return LocationModel.objects.filter()
            else:
                return LocationModel.objects.filter( id=id)
        else:
            return LocationModel.objects.none()
    def get_serializer_class(self):
        if self.action == 'list':
            return LocationListSerializer
        elif self.action == 'update':
            return LocationPostSerializer
        elif self.action =='retrieve':
            return LocationListSerializer




    def update(self, request, *args, **kwargs):
        data = self.request.data
        order_month = str(timezone.now().strftime('%Y%m'))
        data['month'] = order_month
        location_code = data.get('location_code')
        # 处理库位对象
        location_obj = LocationModel.objects.filter(location_code=location_code).first()
        if location_obj:
            data['id'] = location_obj.id
            logger.info(f"库位 {location_code} 已存在")
        else:
            logger.info(f"库位 {location_code} 不存在，创建库位对象")
            serializer_list = LocationPostSerializer(data=data)
            serializer_list.is_valid(raise_exception=True)
            serializer_list.save()
            data['id'] = serializer_list.data.get('id')
        return Response(data, status=status.HTTP_201_CREATED)