#  
# ============LICENSE_START========================================== 
# org.onap.vvp/engagementmgr
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# Unless otherwise specified, all documentation contained herein is licensed
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# ECOMP is a trademark and service mark of AT&T Intellectual Property.
import json

from rest_framework.response import Response
from rest_framework.status import HTTP_204_NO_CONTENT

from engagementmanager.decorator.auth import auth
from engagementmanager.decorator.class_decorator import classDecorator
from engagementmanager.decorator.log_func_entry import logFuncEntry
from engagementmanager.models import VF, VFC
from engagementmanager.rest.vvp_api_view import VvpApiView
from engagementmanager.serializers import VFCModelSerializer
from engagementmanager.service.authorization_service import Permissions
from engagementmanager.service.vfc_service import VFCSvc


@classDecorator([logFuncEntry])
class VFCRest(VvpApiView):
    vfc_service = VFCSvc()

    @auth(Permissions.get_vfc)
    def get(self, request, vf_uuid):

        vf = VF.objects.get(uuid=vf_uuid)
        vfcs = VFC.objects.filter(vf=vf)
        serializer = VFCModelSerializer(vfcs, many=True)
        return Response(serializer.data)

    """
    expecting: VF object uuid, VFC relevant fields(excluding the ones with default field)
    result: addition of a VFC to the DB and concatenating them with the VF object
    """
    # This method doesn't need to be decorated with auth since it doesn't pass any engagement data from the front-end

    @auth(Permissions.add_vfc)
    def post(self, request):
        data = request.data
        msg = self.vfc_service.create_vfc(data)
        return Response(msg)

    """
    expecting: VFC object uuid
    result: Deletion of the VFC object with vfc_uuid
    """

    @auth(Permissions.delete_vfc)
    def delete(self, request, vf_uuid, vfc_uuid):
        self.vfc_service.delete_vfc(vfc_uuid)
        return Response(status=HTTP_204_NO_CONTENT)