"""Tests for plugin models: constraints, __str__, cascade behaviours."""
import pytest

from netbox_dns_bridge.models import (
    IntegerKeyValueSetting,
    CatalogZoneMemberIdentifier,
    SeenTransferClients,
)


@pytest.mark.django_db
class TestIntegerKeyValueSetting:
    def test_str_representation(self):
        obj = IntegerKeyValueSetting.objects.create(key="my-key", value=42)
        assert str(obj) == "my-key: 42"

    def test_unique_key_constraint(self):
        IntegerKeyValueSetting.objects.create(key="dup-key", value=1)
        from django.db import IntegrityError

        with pytest.raises(IntegrityError):
            IntegerKeyValueSetting.objects.create(key="dup-key", value=2)

    def test_create_and_retrieve(self):
        IntegerKeyValueSetting.objects.create(key="catz-serial", value=99)
        obj = IntegerKeyValueSetting.objects.get(key="catz-serial")
        assert obj.value == 99


@pytest.mark.django_db
class TestCatalogZoneMemberIdentifier:
    def test_str_representation(self, make_zone):
        zone = make_zone(name="str.test")
        m = CatalogZoneMemberIdentifier.objects.get(zone=zone)
        assert str(m) == m.name

    def test_unique_name_constraint(self, make_zone):
        zone = make_zone(name="uniq.test")
        existing = CatalogZoneMemberIdentifier.objects.get(zone=zone)
        existing.name = "shared-name"
        existing.save()

        other = make_zone(name="other.test")
        other_ident = CatalogZoneMemberIdentifier.objects.get(zone=other)
        from django.db import IntegrityError

        with pytest.raises(IntegrityError):
            other_ident.name = "shared-name"
            other_ident.save()

    def test_cascade_delete_when_zone_deleted(self, make_zone):
        zone = make_zone(name="cascade.test")
        m = CatalogZoneMemberIdentifier.objects.get(zone=zone)
        assert CatalogZoneMemberIdentifier.objects.filter(pk=m.pk).exists()
        zone.delete()
        assert not CatalogZoneMemberIdentifier.objects.filter(pk=m.pk).exists()

    def test_one_to_one_relationship(self, make_zone):
        zone = make_zone(name="oto.test")
        m = CatalogZoneMemberIdentifier.objects.get(zone=zone)
        assert zone.catz_identifier == m

    def test_ordering_by_name(self, make_zone):
        z1 = make_zone(name="z1.test")
        z2 = make_zone(name="z2.test")
        z3 = make_zone(name="z3.test")
        CatalogZoneMemberIdentifier.objects.filter(zone=z3).update(name="gamma")
        CatalogZoneMemberIdentifier.objects.filter(zone=z1).update(name="alpha")
        CatalogZoneMemberIdentifier.objects.filter(zone=z2).update(name="beta")
        names = list(
            CatalogZoneMemberIdentifier.objects.filter(
                zone__in=[z1, z2, z3]
            ).values_list("name", flat=True)
        )
        assert names == ["alpha", "beta", "gamma"]


@pytest.mark.django_db
class TestSeenTransferClients:
    def test_str_representation(self, make_view):
        from netbox_dns.models import View

        view = make_view(name="str-view")
        client = SeenTransferClients.objects.create(
            source_ip="192.0.2.1",
            view=view,
            last_seen="2026-01-01T00:00:00Z",
        )
        assert str(client) == f"192.0.2.1 ({view.name})"

    def test_unique_ip_view_constraint(self, make_view):
        from django.db import IntegrityError

        view = make_view(name="uniq-view")
        SeenTransferClients.objects.create(
            source_ip="10.0.0.1",
            view=view,
            last_seen="2026-01-01T00:00:00Z",
        )
        with pytest.raises(IntegrityError):
            SeenTransferClients.objects.create(
                source_ip="10.0.0.1",
                view=view,
                last_seen="2026-01-02T00:00:00Z",
            )

    def test_same_ip_different_views_allowed(self, make_view):
        v1 = make_view(name="v1")
        v2 = make_view(name="v2")
        SeenTransferClients.objects.create(
            source_ip="10.0.0.5", view=v1, last_seen="2026-01-01T00:00:00Z"
        )
        SeenTransferClients.objects.create(
            source_ip="10.0.0.5", view=v2, last_seen="2026-01-01T00:00:00Z"
        )
        assert SeenTransferClients.objects.filter(source_ip="10.0.0.5").count() == 2

    def test_protect_on_view_delete(self, make_view):
        from django.db.models import ProtectedError

        view = make_view(name="protected-view")
        SeenTransferClients.objects.create(
            source_ip="10.0.0.9",
            view=view,
            last_seen="2026-01-01T00:00:00Z",
        )
        with pytest.raises(ProtectedError):
            view.delete()

    def test_ordering_by_source_ip(self, make_view):
        from django.utils import timezone

        v = make_view(name="ord-view")
        now = timezone.now()
        for ip in ["10.0.0.3", "10.0.0.1", "10.0.0.2"]:
            SeenTransferClients.objects.create(source_ip=ip, view=v, last_seen=now)
        ips = list(SeenTransferClients.objects.values_list("source_ip", flat=True))
        assert ips == ["10.0.0.1", "10.0.0.2", "10.0.0.3"]