#
# Copyright 2013 New Dream Network, LLC (DreamHost)
#
# 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 datetime

from oslotest import base as testbase
import six

from ceilometer.alarm.storage import models as alarm_models
from ceilometer.event.storage import models as event_models
from ceilometer.storage import base
from ceilometer.storage import models


class FakeModel(base.Model):
    def __init__(self, arg1, arg2):
        base.Model.__init__(self, arg1=arg1, arg2=arg2)


class ModelTest(testbase.BaseTestCase):

    def test_create_attributes(self):
        m = FakeModel(1, 2)
        self.assertEqual(1, m.arg1)
        self.assertEqual(2, m.arg2)

    def test_as_dict(self):
        m = FakeModel(1, 2)
        d = m.as_dict()
        self.assertEqual({'arg1': 1, 'arg2': 2}, d)

    def test_as_dict_recursive(self):
        m = FakeModel(1, FakeModel('a', 'b'))
        d = m.as_dict()
        self.assertEqual({'arg1': 1,
                          'arg2': {'arg1': 'a',
                                   'arg2': 'b'}},
                         d)

    def test_as_dict_recursive_list(self):
        m = FakeModel(1, [FakeModel('a', 'b')])
        d = m.as_dict()
        self.assertEqual({'arg1': 1,
                          'arg2': [{'arg1': 'a',
                                    'arg2': 'b'}]},
                         d)

    def test_event_repr_no_traits(self):
        x = event_models.Event("1", "name", "now", None, {})
        self.assertEqual("<Event: 1, name, now, >", repr(x))

    def test_get_field_names_of_sample(self):
        sample_fields = ["source", "counter_name", "counter_type",
                         "counter_unit", "counter_volume", "user_id",
                         "project_id", "resource_id", "timestamp",
                         "resource_metadata", "message_id",
                         "message_signature", "recorded_at"]

        self.assertEqual(set(sample_fields),
                         set(models.Sample.get_field_names()))

    def test_get_field_names_of_alarm(self):
        alarm_fields = ["alarm_id", "type", "enabled", "name", "description",
                        "timestamp", "user_id", "project_id", "state",
                        "state_timestamp", "ok_actions", "alarm_actions",
                        "insufficient_data_actions", "repeat_actions", "rule",
                        "severity", "time_constraints"]

        self.assertEqual(set(alarm_fields),
                         set(alarm_models.Alarm.get_field_names()))

    def test_get_field_names_of_alarmchange(self):
        alarmchange_fields = ["event_id", "alarm_id", "type", "detail",
                              "user_id", "project_id", "severity",
                              "on_behalf_of", "timestamp"]

        self.assertEqual(set(alarmchange_fields),
                         set(alarm_models.AlarmChange.get_field_names()))


class TestTraitModel(testbase.BaseTestCase):

    def test_convert_value(self):
        v = event_models.Trait.convert_value(
            event_models.Trait.INT_TYPE, '10')
        self.assertEqual(10, v)
        self.assertIsInstance(v, int)
        v = event_models.Trait.convert_value(
            event_models.Trait.FLOAT_TYPE, '10')
        self.assertEqual(10.0, v)
        self.assertIsInstance(v, float)

        v = event_models.Trait.convert_value(
            event_models.Trait.DATETIME_TYPE, '2013-08-08 21:05:37.123456')
        self.assertEqual(datetime.datetime(2013, 8, 8, 21, 5, 37, 123456), v)
        self.assertIsInstance(v, datetime.datetime)

        v = event_models.Trait.convert_value(
            event_models.Trait.TEXT_TYPE, 10)
        self.assertEqual("10", v)
        self.assertIsInstance(v, six.text_type)


class TestClassModel(testbase.BaseTestCase):

    ALARM = {
        'alarm_id': '503490ea-ee9e-40d6-9cad-93a71583f4b2',
        'enabled': True,
        'type': 'threshold',
        'name': 'alarm-test',
        'description': 'alarm-test-description',
        'timestamp': None,
        'user_id': '5c76351f5fef4f6490d1048355094ca3',
        'project_id': 'd83ed14a457141fc8661b4dcb3fd883d',
        'state': "insufficient data",
        'state_timestamp': None,
        'ok_actions': [],
        'alarm_actions': [],
        'insufficient_data_actions': [],
        'repeat_actions': False,
        'time_constraints': [],
        'rule': {
            'comparison_operator': 'lt',
            'threshold': 34,
            'statistic': 'max',
            'evaluation_periods': 1,
            'period': 60,
            'meter_name': 'cpu_util',
            'query': []
        }
    }

    def test_timestamp_cannot_be_none(self):
        self.ALARM['timestamp'] = None
        self.ALARM['state_timestamp'] = datetime.datetime.utcnow()
        self.assertRaises(TypeError,
                          alarm_models.Alarm.__init__,
                          **self.ALARM)

    def test_state_timestamp_cannot_be_none(self):
        self.ALARM['timestamp'] = datetime.datetime.utcnow()
        self.ALARM['state_timestamp'] = None
        self.assertRaises(TypeError,
                          alarm_models.Alarm.__init__,
                          **self.ALARM)