import netaddr
from django.test import TestCase

from ipam.choices import IPAddressStatusChoices, PrefixStatusChoices
from ipam.models import VRF, IPAddress, Prefix


class OrderingTestBase(TestCase):
    vrfs = None

    @classmethod
    def setUpTestData(cls):
        """
        Setup the VRFs for the class as a whole
        """
        vrfs = (
            VRF(name='VRF 1'),
            VRF(name='VRF 2'),
            VRF(name='VRF 3'),
        )
        VRF.objects.bulk_create(vrfs)

    def _compare(self, queryset, objectset):
        """
        Perform the comparison of the queryset object and the object used to instantiate the queryset.
        """
        for i, obj in enumerate(queryset):
            self.assertEqual(obj, objectset[i])

    def _compare_ne(self, queryset, objectset):
        """
        Perform the comparison of the queryset object and the object used to instantiate the queryset.
        """
        for i, obj in enumerate(queryset):
            self.assertNotEqual(obj, objectset[i])


class PrefixOrderingTestCase(OrderingTestBase):

    def test_prefix_vrf_ordering(self):
        """
        This is a very basic test, which tests both prefixes without VRFs and prefixes with VRFs
        """
        vrf1, vrf2 = VRF.objects.all()[:2]
        prefixes = (
            Prefix(status=PrefixStatusChoices.STATUS_CONTAINER, vrf=None, prefix=netaddr.IPNetwork('192.168.0.0/16')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=None, prefix=netaddr.IPNetwork('192.168.0.0/24')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=None, prefix=netaddr.IPNetwork('192.168.1.0/24')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=None, prefix=netaddr.IPNetwork('192.168.2.0/24')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=None, prefix=netaddr.IPNetwork('192.168.3.0/24')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=None, prefix=netaddr.IPNetwork('192.168.4.0/24')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=None, prefix=netaddr.IPNetwork('192.168.5.0/24')),

            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=vrf1, prefix=netaddr.IPNetwork('10.0.0.0/8')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=vrf1, prefix=netaddr.IPNetwork('10.0.0.0/16')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=vrf1, prefix=netaddr.IPNetwork('10.0.0.0/24')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=vrf1, prefix=netaddr.IPNetwork('10.0.1.0/24')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=vrf1, prefix=netaddr.IPNetwork('10.0.2.0/24')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=vrf1, prefix=netaddr.IPNetwork('10.0.3.0/24')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=vrf1, prefix=netaddr.IPNetwork('10.0.4.0/24')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=vrf1, prefix=netaddr.IPNetwork('10.1.0.0/16')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=vrf1, prefix=netaddr.IPNetwork('10.1.1.0/24')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=vrf1, prefix=netaddr.IPNetwork('10.1.2.0/24')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=vrf1, prefix=netaddr.IPNetwork('10.1.3.0/24')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=vrf1, prefix=netaddr.IPNetwork('10.1.4.0/24')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=vrf1, prefix=netaddr.IPNetwork('10.2.0.0/16')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=vrf1, prefix=netaddr.IPNetwork('10.2.1.0/24')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=vrf1, prefix=netaddr.IPNetwork('10.2.2.0/24')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=vrf1, prefix=netaddr.IPNetwork('10.2.3.0/24')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=vrf1, prefix=netaddr.IPNetwork('10.2.4.0/24')),

            Prefix(status=PrefixStatusChoices.STATUS_CONTAINER, vrf=vrf2, prefix=netaddr.IPNetwork('172.16.0.0/12')),
            Prefix(status=PrefixStatusChoices.STATUS_CONTAINER, vrf=vrf2, prefix=netaddr.IPNetwork('172.16.0.0/16')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=vrf2, prefix=netaddr.IPNetwork('172.16.0.0/24')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=vrf2, prefix=netaddr.IPNetwork('172.16.1.0/24')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=vrf2, prefix=netaddr.IPNetwork('172.16.2.0/24')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=vrf2, prefix=netaddr.IPNetwork('172.16.3.0/24')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=vrf2, prefix=netaddr.IPNetwork('172.16.4.0/24')),
            Prefix(status=PrefixStatusChoices.STATUS_CONTAINER, vrf=vrf2, prefix=netaddr.IPNetwork('172.17.0.0/16')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=vrf2, prefix=netaddr.IPNetwork('172.17.0.0/24')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=vrf2, prefix=netaddr.IPNetwork('172.17.1.0/24')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=vrf2, prefix=netaddr.IPNetwork('172.17.2.0/24')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=vrf2, prefix=netaddr.IPNetwork('172.17.3.0/24')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=vrf2, prefix=netaddr.IPNetwork('172.17.4.0/24')),
        )

        Prefix.objects.bulk_create(prefixes)

        # Test
        self._compare(Prefix.objects.all(), prefixes)

    def test_prefix_complex_ordering(self):
        """
        This function tests a complex ordering of interwoven prefixes and vrfs.  This is the current expected ordering
         of VRFs. This includes the testing of the Container status.

        The proper ordering, to get proper containerization should be:
            None:10.0.0.0/8
            None:10.0.0.0/16
            VRF A:10.0.0.0/24
            VRF A:10.0.1.0/24
            VRF A:10.0.1.0/25
            None:10.1.0.0/16
            VRF A:10.1.0.0/24
            VRF A:10.1.1.0/24
            None: 192.168.0.0/16
        """
        vrf1 = VRF.objects.first()
        prefixes = [
            Prefix(status=PrefixStatusChoices.STATUS_CONTAINER, vrf=None, prefix=netaddr.IPNetwork('10.0.0.0/8')),
            Prefix(status=PrefixStatusChoices.STATUS_CONTAINER, vrf=None, prefix=netaddr.IPNetwork('10.0.0.0/16')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=None, prefix=netaddr.IPNetwork('10.1.0.0/16')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=None, prefix=netaddr.IPNetwork('192.168.0.0/16')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=vrf1, prefix=netaddr.IPNetwork('10.0.0.0/24')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=vrf1, prefix=netaddr.IPNetwork('10.0.1.0/24')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=vrf1, prefix=netaddr.IPNetwork('10.0.1.0/25')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=vrf1, prefix=netaddr.IPNetwork('10.1.0.0/24')),
            Prefix(status=PrefixStatusChoices.STATUS_ACTIVE, vrf=vrf1, prefix=netaddr.IPNetwork('10.1.1.0/24')),
        ]
        Prefix.objects.bulk_create(prefixes)

        # Test
        self._compare(Prefix.objects.all(), prefixes)


class IPAddressOrderingTestCase(OrderingTestBase):
    def test_address_vrf_ordering(self):
        """
        This function tests ordering with the inclusion of vrfs
        """
        vrf1, vrf2 = VRF.objects.all()[:2]
        addresses = (
            IPAddress(status=IPAddressStatusChoices.STATUS_ACTIVE, vrf=vrf1, address=netaddr.IPNetwork('10.0.0.1/24')),
            IPAddress(status=IPAddressStatusChoices.STATUS_ACTIVE, vrf=vrf1, address=netaddr.IPNetwork('10.0.1.1/24')),
            IPAddress(status=IPAddressStatusChoices.STATUS_ACTIVE, vrf=vrf1, address=netaddr.IPNetwork('10.0.2.1/24')),
            IPAddress(status=IPAddressStatusChoices.STATUS_ACTIVE, vrf=vrf1, address=netaddr.IPNetwork('10.0.3.1/24')),
            IPAddress(status=IPAddressStatusChoices.STATUS_ACTIVE, vrf=vrf1, address=netaddr.IPNetwork('10.0.4.1/24')),
            IPAddress(status=IPAddressStatusChoices.STATUS_ACTIVE, vrf=vrf1, address=netaddr.IPNetwork('10.1.0.1/24')),
            IPAddress(status=IPAddressStatusChoices.STATUS_ACTIVE, vrf=vrf1, address=netaddr.IPNetwork('10.1.1.1/24')),
            IPAddress(status=IPAddressStatusChoices.STATUS_ACTIVE, vrf=vrf1, address=netaddr.IPNetwork('10.1.2.1/24')),
            IPAddress(status=IPAddressStatusChoices.STATUS_ACTIVE, vrf=vrf1, address=netaddr.IPNetwork('10.1.3.1/24')),
            IPAddress(status=IPAddressStatusChoices.STATUS_ACTIVE, vrf=vrf1, address=netaddr.IPNetwork('10.1.4.1/24')),
            IPAddress(status=IPAddressStatusChoices.STATUS_ACTIVE, vrf=vrf1, address=netaddr.IPNetwork('10.2.0.1/24')),
            IPAddress(status=IPAddressStatusChoices.STATUS_ACTIVE, vrf=vrf1, address=netaddr.IPNetwork('10.2.1.1/24')),
            IPAddress(status=IPAddressStatusChoices.STATUS_ACTIVE, vrf=vrf1, address=netaddr.IPNetwork('10.2.2.1/24')),
            IPAddress(status=IPAddressStatusChoices.STATUS_ACTIVE, vrf=vrf1, address=netaddr.IPNetwork('10.2.3.1/24')),
            IPAddress(status=IPAddressStatusChoices.STATUS_ACTIVE, vrf=vrf1, address=netaddr.IPNetwork('10.2.4.1/24')),
            IPAddress(
                status=IPAddressStatusChoices.STATUS_ACTIVE, vrf=vrf2, address=netaddr.IPNetwork('172.16.0.1/24')
            ),
            IPAddress(
                status=IPAddressStatusChoices.STATUS_ACTIVE, vrf=vrf2, address=netaddr.IPNetwork('172.16.1.1/24')
            ),
            IPAddress(
                status=IPAddressStatusChoices.STATUS_ACTIVE, vrf=vrf2, address=netaddr.IPNetwork('172.16.2.1/24')
            ),
            IPAddress(
                status=IPAddressStatusChoices.STATUS_ACTIVE, vrf=vrf2, address=netaddr.IPNetwork('172.16.3.1/24')
            ),
            IPAddress(
                status=IPAddressStatusChoices.STATUS_ACTIVE, vrf=vrf2, address=netaddr.IPNetwork('172.16.4.1/24')
            ),
            IPAddress(
                status=IPAddressStatusChoices.STATUS_ACTIVE, vrf=vrf2, address=netaddr.IPNetwork('172.17.0.1/24')
            ),
            IPAddress(
                status=IPAddressStatusChoices.STATUS_ACTIVE, vrf=vrf2, address=netaddr.IPNetwork('172.17.1.1/24')
            ),
            IPAddress(
                status=IPAddressStatusChoices.STATUS_ACTIVE, vrf=vrf2, address=netaddr.IPNetwork('172.17.2.1/24')
            ),
            IPAddress(
                status=IPAddressStatusChoices.STATUS_ACTIVE, vrf=vrf2, address=netaddr.IPNetwork('172.17.3.1/24')
            ),
            IPAddress(
                status=IPAddressStatusChoices.STATUS_ACTIVE, vrf=vrf2, address=netaddr.IPNetwork('172.17.4.1/24')
            ),
            IPAddress(
                status=IPAddressStatusChoices.STATUS_ACTIVE, vrf=None, address=netaddr.IPNetwork('192.168.0.1/24')
            ),
            IPAddress(
                status=IPAddressStatusChoices.STATUS_ACTIVE, vrf=None, address=netaddr.IPNetwork('192.168.1.1/24')
            ),
            IPAddress(
                status=IPAddressStatusChoices.STATUS_ACTIVE, vrf=None, address=netaddr.IPNetwork('192.168.2.1/24')
            ),
            IPAddress(
                status=IPAddressStatusChoices.STATUS_ACTIVE, vrf=None, address=netaddr.IPNetwork('192.168.3.1/24')
            ),
            IPAddress(
                status=IPAddressStatusChoices.STATUS_ACTIVE, vrf=None, address=netaddr.IPNetwork('192.168.4.1/24')
            ),
            IPAddress(
                status=IPAddressStatusChoices.STATUS_ACTIVE, vrf=None, address=netaddr.IPNetwork('192.168.5.1/24')
            ),
        )
        IPAddress.objects.bulk_create(addresses)

        # Test
        self._compare(IPAddress.objects.all(), addresses)
