# serializers.py
class LoginSerializer(serializers.ModelSerializer):
    email = serializers.EmailField(max_length=255, min_length=3)
    password = serializers.CharField(max_length=68, min_length=3, write_only=True)
    access_token = serializers.CharField(max_length=68, read_only=True)
    refresh_token = serializers.CharField(max_length=68, read_only=True)

    class Meta:
        model = User
        fields = ['email', 'password','access_token', 'refresh_token']

# views.py
class LoginAPIView(GenericAPIView):
    queryset = User.objects.all()
    serializer_class = LoginSerializer
    renderer_classes = [JSONRenderer]

    def post(self,request):

        # CASE1 : serializer_class 사용할 경우 
        serializer = self.serializer_class(data=request.data)
        serializer.is_valid(raise_exception=True)   # 값이 잘 들어갔는지 확인.
        return Response(serializer.data, status=status.HTTP_200_OK)



        # CASE2 : Serializer 사용하지 않을 경우
        user_email = request.data['email']
        user_password = request.data['password']

        check = self.queryset.filter(email=user_email).first()

        if check.password != user_password:
            return Respone(status=status.HTTP_400_BAD_REQUEST)

        user = auth.authenticate(email=user_email, password=user_password)
        user_token = user.tokens()

        obj = {
            "user_email" : user_email,
            "user_access_token" : user_token['access token'],
            "user_refressh_token" : user_token['refresh token']
        }
        return Response(obj, status=status.HTTP_200_OK) 

# serializers.py
class UserDetailSerializer(serializers.ModelSerializer):

    class Meta:
        model = User
        fields = ['username']

# views.py
class UserDetailView(GenericAPIView):
    queryset = User.objects.all()
    serializer_class = UserDetailSerializer
    permission_classes = (permissions.IsAuthenticated,IsOwner)
    
    def get(self, request, *args, **kwargs):
        
        username = request.query_params.get('username')
        user_info_query = self.queryset.filter(username=username).first()
        
        if not user_info_query:
            return Response(status=status.HTTP_204_NO_CONTENT, data={"result":"No User"}) 
        
        user_info = {
            "username" : user_info_query.username,
            "email" : user_info_query.email,
            "phone" : user_info_query.phone,
            "gender" : user_info_query.gender,
        }

        return Response(user_info, status=status.HTTP_200_OK)