import json

from rest_framework import generics
from rest_framework.authentication import SessionAuthentication, BasicAuthentication
from rest_framework.permissions import IsAuthenticated, IsAdminUser

from .models import VM
from .serializers import VMSerializer

class VMList(generics.ListAPIView):
    authentication_classes = [SessionAuthentication, BasicAuthentication]
    permission_classes = [IsAuthenticated, IsAdminUser]
    queryset = VM.objects.all()
    serializer_class = VMSerializer


class VMDetail(generics.RetrieveAPIView):
    authentication_classes = [SessionAuthentication, BasicAuthentication]
    permission_classes = [IsAuthenticated, IsAdminUser]
    lookup_field = 'uuid'
    queryset = VM.objects.all()
    serializer_class = VMSerializer


class UserVMList(generics.ListAPIView):
    authentication_classes = [SessionAuthentication, BasicAuthentication]
    permission_classes = [IsAuthenticated]
    serializer_class = VMSerializer

    def get_queryset(self):
        user_email = self.request.user.ldap_user.attrs.data['mail']
        vms = []
        for mail in user_email:
            vms += VM.objects.filter(owner__username=mail)

        for vm in vms:
            data = json.loads(vm.data)
            vm_template = data['TEMPLATE']
            vm.data = {
                'cpu': vm_template['VCPU'],
                'ram': vm_template['MEMORY'],
                'nic': vm_template['NIC'],
                'disks': vm_template['DISK']
            }

        return vms

#######################################
# Following for quick experimentation #
#######################################

# from django.http import HttpResponse
#
# def test(request):
#     user_email = request.user.ldap_user.attrs.data['mail']
#     vms = []
#     for mail in user_email:
#         vms += VM.objects.filter(owner__username=mail)
#     return HttpResponse("Hello World")