from rest_framework import viewsets
from utils.page import MyPageNumberPagination
from rest_framework.filters import OrderingFilter
from django_filters.rest_framework import DjangoFilterBackend

from .models import Users, AcademicProfile, ResearchGroup, GroupMembership
from .filter import UsersFilter, AcademicProfileFilter, ResearchGroupFilter, GroupMembershipFilter
from .serializers import UsersGetSerializer


class UserprofileViewSet(viewsets.ModelViewSet):
    """
    用户档案视图集
        retrieve:
            Response a data list (get)

        list:
            Response a data list (all)

        create:
            Create a data line (post)

        delete:
            Delete a data line (delete)

        partial_update:
            Partial_update a data (patch:partial_update)

        update:
            Update a data (put:update)
    """
    fliter_backends = (DjangoFilterBackend, OrderingFilter)
    ordering_fields = ('create_time', 'update_time')
    filterset_class = UsersFilter
    pagination_class = MyPageNumberPagination

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

    def get_queryset(self):
        project_id = self.get_project()
        if project_id:
            return Users.objects.filter(user_id=project_id)
        else:
            return Users.objects.all()

    def get_serializer_class(self):
        if self.action in ['list','retrieve']:
            return UsersGetSerializer
        else:
            return UsersGetSerializer
        
    def create(self, request, *args, **kwargs):
        serializer = self.get_serializer(data=request.data)
        serializer.is_valid(raise_exception=True)
        self.perform_create(serializer)
        headers = self.get_success_headers(serializer.data)
        return Response(serializer.data, status=status.HTTP_201_CREATED, headers=headers)
    
    def update(self, request, *args, **kwargs):
        qs = self.get_object()
        serializer = self.get_serializer(qs, data=request.data, partial=True)
        serializer.is_valid(raise_exception=True)
        self.perform_update(serializer)
        return Response(serializer.data)    
    
    def partial_update(self, request, *args, **kwargs):
        qs = self.get_object()
        serializer = self.get_serializer(qs, data=request.data, partial=True)
        serializer.is_valid(raise_exception=True)
        self.perform_update(serializer)
        return Response(serializer.data)
    
    def destroy(self, request, *args, **kwargs):
        qs = self.get_object()
        qs.is_delete = True
        qs.save()
        return Response(status=status.HTTP_204_NO_CONTENT)
    
    def perform_create(self, serializer):
        serializer.save()
    
    def perform_update(self, serializer):
        serializer.save()