Author: Joel G Mathew

class customer(models.Model):
    # Need autoincrement, unique and primary
    cstid = models.AutoField(primary_key=True, unique=True)
    date_of_registration = models.DateField(default=timezone.now)
    insurance_number = models.CharField(max_length=100, blank=True, null=True)
    name = models.CharField(max_length=35, blank=False)
    ageyrs = models.IntegerField(blank=True)
    agemnths = models.IntegerField(blank=True)
    dob = models.DateField(null=True, blank=True)

class UpdateCustomerDetail(APIView):
    """
    Retrieve, update or delete a snippet instance.
    For details, refer: https://www.django-rest-framework.org/tutorial/3-class-based-views/
    """
    print("In UpdateCustomerDetail")

    def get_object(self, pk):
        try:
            return customer.objects.get(pk=pk)
        except customer.DoesNotExist:
            raise Http404

    def get(self, request, pk, format=None):
        snippet = self.get_object(pk)
        serializer = customerSerializer(snippet)
        return Response(serializer.data)

    def patch(self, request, pk, format=None):
        cst = self.get_object(pk)
        print("request.data:", request.data)
        customer_data = json.loads(request.data['customer'])
        serializer = customerSerializer(cst, data=customer_data)
        if serializer.is_valid():
            print("Serializer is valid")
            serializer.save()
            print(Response(serializer.data))
            return Response(serializer.data)
        else:
            print("Serializer is NOT valid")
            print(serializer.errors)
        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)

    def delete(self, request, pk, format=None):
        snippet = self.get_object(pk)
        snippet.delete()
        return Response(status=status.HTTP_204_NO_CONTENT)

    path('update_customer_new/<int:pk>/', views.UpdateCustomerDetail.as_view(),
         name='update_customer_new'),

  Future updateCustomerNew({
    int clinicID,
    Customer customer,
  }) async {
    print("In Network::updateCustomer");
    String basicAuth =
        'Basic ' + base64Encode(utf8.encode('$userName:$passWord'));
    print(basicAuth);
    int cstID = customer.cstid;
    var response = await http.patch(
      '${host}update_customer_new/${cstID}/',
      headers: <String, String>{
        'Content-Type': 'application/json; charset=UTF-8',
        'authorization': basicAuth,
      },
      body: jsonEncode(<String, String>{
        'clinicID': clinicID.toString(),
        'customer': jsonEncode(customer),
      }),
    );
    print("Sending: ${jsonEncode(customer)}");
    print('Response status: ${response.statusCode}');
    print(response.body);
    return response.body;
  }