from django.views.generic.edit import CreateView
from django.contrib.auth.mixins import LoginRequiredMixin
from django.contrib.messages.views import SuccessMessageMixin
from rest_framework.response import Response

from django.shortcuts import render

from rest_framework import viewsets, permissions

from .models      import *
from .serializers import *
from .selectors   import *
from .services    import *
from .forms       import *
from .tasks       import *

class WireGuardVPNViewSet(viewsets.ModelViewSet):
    serializer_class = WireGuardVPNSerializer
    permission_classes = [permissions.IsAuthenticated]

    def get_queryset(self):
        if self.request.user.is_superuser:
            obj = WireGuardVPN.objects.all()
        else:
            obj = WireGuardVPN.objects.filter(owner=self.request.user)

        return obj

    def create(self, request):
        serializer = self.get_serializer(data=request.data)
        serializer.is_valid(raise_exception=True)

        vpn = create_wireguard_vpn(
            owner=self.request.user,
            public_key=serializer.validated_data['wireguard_public_key'],
            network_mask=serializer.validated_data['network_mask']
        )

        return Response(WireGuardVPNSerializer(vpn).data)


class WireGuardVPNCreateView(LoginRequiredMixin, SuccessMessageMixin, CreateView):
    model = WireGuardVPN

    login_url = '/login/'
    success_url = '/'
    success_message = "%(network) was created successfully"

    form_class = WireGuardVPNForm

    def get_success_message(self, cleaned_data):
        return self.success_message % dict(cleaned_data,
                                           the_prefix = self.object.prefix)

class WireGuardVPNSizes(viewsets.ViewSet):
    def list(self, request):
        sizes = allowed_vpn_network_reservation_size()
        print(sizes)

        sizes = [ { 'size': size } for size in sizes ]
        print(sizes)

        return Response(WireGuardVPNSizesSerializer(sizes, many=True).data)