# coding: utf-8

# Python libs
from __future__ import absolute_import

import logging

# Salt libs
import salt.beacons.network_settings as network_settings
from tests.support.mixins import LoaderModuleMockMixin
from tests.support.mock import MagicMock, patch

# Salt testing libs
from tests.support.unit import TestCase, skipIf

try:
    from pyroute2 import IPDB

    HAS_PYROUTE2 = True
except ImportError:
    HAS_PYROUTE2 = False


log = logging.getLogger(__name__)


class MockIPClass(object):
    def __init__(self, *args, **kwargs):
        self.args = args
        self.kwargs = kwargs

    def by_name(self):
        return {}


class NetworkSettingsBeaconTestCase(TestCase, LoaderModuleMockMixin):
    """
    Test case for salt.beacons.network_settings
    """

    def setup_loader_modules(self):
        return {network_settings: {"__context__": {}, "__salt__": {}}}

    def test_non_list_config(self):
        config = {}

        ret = network_settings.validate(config)

        self.assertEqual(
            ret, (False, "Configuration for network_settings beacon must be a list.")
        )

    def test_empty_config(self):
        config = [{}]

        ret = network_settings.validate(config)

        self.assertEqual(ret, (True, "Valid beacon configuration"))

    def test_interface(self):
        config = [{"interfaces": {"enp14s0u1u2": {"promiscuity": None}}}]
        LAST_STATS = network_settings._copy_interfaces_info(
            {"enp14s0u1u2": {"family": "0", "promiscuity": "0", "group": "0"}}
        )

        NEW_STATS = network_settings._copy_interfaces_info(
            {"enp14s0u1u2": {"family": "0", "promiscuity": "1", "group": "0"}}
        )

        ret = network_settings.validate(config)
        self.assertEqual(ret, (True, "Valid beacon configuration"))

        with patch.object(network_settings, "LAST_STATS", {}), patch.object(
            network_settings, "IP", MockIPClass
        ), patch(
            "salt.beacons.network_settings._copy_interfaces_info",
            MagicMock(side_effect=[LAST_STATS, NEW_STATS]),
        ):
            ret = network_settings.beacon(config)
            self.assertEqual(ret, [])

            ret = network_settings.beacon(config)
            _expected = [
                {
                    "interface": "enp14s0u1u2",
                    "tag": "enp14s0u1u2",
                    "change": {"promiscuity": "1"},
                }
            ]
            self.assertEqual(ret, _expected)

    def test_interface_no_change(self):
        config = [{"interfaces": {"enp14s0u1u2": {"promiscuity": None}}}]
        LAST_STATS = network_settings._copy_interfaces_info(
            {"enp14s0u1u2": {"family": "0", "promiscuity": "0", "group": "0"}}
        )

        NEW_STATS = network_settings._copy_interfaces_info(
            {"enp14s0u1u2": {"family": "0", "promiscuity": "0", "group": "0"}}
        )

        ret = network_settings.validate(config)
        self.assertEqual(ret, (True, "Valid beacon configuration"))

        with patch.object(network_settings, "LAST_STATS", {}), patch.object(
            network_settings, "IP", MockIPClass
        ), patch(
            "salt.beacons.network_settings._copy_interfaces_info",
            MagicMock(side_effect=[LAST_STATS, NEW_STATS]),
        ):
            ret = network_settings.beacon(config)
            self.assertEqual(ret, [])

            ret = network_settings.beacon(config)
            self.assertEqual(ret, [])

    def test_wildcard_interface(self):
        config = [{"interfaces": {"en*": {"promiscuity": None}}}]
        LAST_STATS = network_settings._copy_interfaces_info(
            {"enp14s0u1u2": {"family": "0", "promiscuity": "0", "group": "0"}}
        )

        NEW_STATS = network_settings._copy_interfaces_info(
            {"enp14s0u1u2": {"family": "0", "promiscuity": "1", "group": "0"}}
        )

        ret = network_settings.validate(config)
        self.assertEqual(ret, (True, "Valid beacon configuration"))

        with patch.object(network_settings, "LAST_STATS", {}), patch.object(
            network_settings, "IP", MockIPClass
        ), patch(
            "salt.beacons.network_settings._copy_interfaces_info",
            MagicMock(side_effect=[LAST_STATS, NEW_STATS]),
        ):
            ret = network_settings.beacon(config)
            self.assertEqual(ret, [])

            ret = network_settings.beacon(config)
            _expected = [
                {
                    "interface": "enp14s0u1u2",
                    "tag": "enp14s0u1u2",
                    "change": {"promiscuity": "1"},
                }
            ]
            self.assertEqual(ret, _expected)


@skipIf(not HAS_PYROUTE2, "no pyroute2 installed, skipping")
class Pyroute2TestCase(TestCase):
    def test_interface_dict_fields(self):
        with IPDB() as ipdb:
            for attr in network_settings.ATTRS:
                # ipdb.interfaces is a dict-like object, that
                # contains interface definitions. Interfaces can
                # be referenced both with indices and names.
                #
                # ipdb.interfaces[1] is an interface with index 1,
                # that is the loopback interface.
                self.assertIn(attr, ipdb.interfaces[1])