# -*- coding: utf-8 -*-
#    Licensed under the Apache License, Version 2.0 (the "License"); you may
#    not use this file except in compliance with the License. You may obtain
#    a copy of the License at
#
#         http://www.apache.org/licenses/LICENSE-2.0
#
#    Unless required by applicable law or agreed to in writing, software
#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
#    License for the specific language governing permissions and limitations
#    under the License.

import logging
import unittest
from collections import namedtuple

import mock

from oslo_config import cfg

import networking_calico.common as common
from networking_calico.common import config


class TestConfig(unittest.TestCase):

    def test_additional_options_registered(self):
        add_opt = cfg.StrOpt("test_option", default="test")
        config.register_options(cfg.CONF, additional_options=[add_opt])
        self.assertEqual(cfg.CONF["calico"]["test_option"], "test")


Config = namedtuple("Config", ["IFACE_PREFIX", "HOSTNAME"])

# Logger
_log = logging.getLogger(__name__)


MISSING = object()


class TestCommon(unittest.TestCase):
    def setUp(self):
        self.m_config = mock.Mock()
        self.m_config.IFACE_PREFIX = ["tap"]
        self.m_config.HOSTNAME = "localhost"

    def tearDown(self):
        pass

    def test_validate_cidr(self):
        self.assertTrue(common.validate_cidr("1.2.3.4", 4))
        self.assertFalse(common.validate_cidr("1.2.3.4.5", 4))
        self.assertTrue(common.validate_cidr("1.2.3.4/32", 4))
        self.assertTrue(common.validate_cidr("1.2.3", 4))
        self.assertFalse(common.validate_cidr("bloop", 4))
        self.assertFalse(common.validate_cidr("::", 4))
        self.assertFalse(common.validate_cidr("2001::abc", 4))
        self.assertFalse(common.validate_cidr("2001::a/64", 4))

        self.assertFalse(common.validate_cidr("1.2.3.4", 6))
        self.assertFalse(common.validate_cidr("1.2.3.4.5", 6))
        self.assertFalse(common.validate_cidr("1.2.3.4/32", 6))
        self.assertFalse(common.validate_cidr("1.2.3", 6))
        self.assertFalse(common.validate_cidr("bloop", 6))
        self.assertTrue(common.validate_cidr("::", 6))
        self.assertTrue(common.validate_cidr("2001::abc", 6))
        self.assertTrue(common.validate_cidr("2001::a/64", 6))

        self.assertTrue(common.validate_cidr("1.2.3.4", None))
        self.assertFalse(common.validate_cidr("1.2.3.4.5", None))
        self.assertTrue(common.validate_cidr("1.2.3.4/32", None))
        self.assertTrue(common.validate_cidr("1.2.3", None))
        self.assertFalse(common.validate_cidr("bloop", None))
        self.assertTrue(common.validate_cidr("::", None))
        self.assertTrue(common.validate_cidr("2001::abc", None))
        self.assertTrue(common.validate_cidr("2001::a/64", None))

        self.assertFalse(common.validate_cidr(None, None))

    def test_validate_region(self):
        # Valid openstack_region.
        config._validate_region("region1")
        # openstack_region with uppercase.
        self.assertRaises(AssertionError, config._validate_region, "RegionOne")
        # openstack_region with slash.
        self.assertRaises(AssertionError, config._validate_region, "us/east")
        # openstack_region with underscore.
        self.assertRaises(AssertionError, config._validate_region, "my_region")
        # openstack_region too long.
        self.assertRaises(
            AssertionError,
            config._validate_region,
            "my-region-has-a-very-long-and-extremely-interesting-name",
        )