# Copyright 2015 Google Inc.
#
# 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 unittest

import mock


def _make_credentials():
    import google.auth.credentials
    return mock.Mock(spec=google.auth.credentials.Credentials)


class TestClient(unittest.TestCase):

    PROJECT = 'PROJECT'
    ZONE_NAME = 'zone-name'

    @staticmethod
    def _get_target_class():
        from google.cloud.dns.client import Client
        return Client

    def _make_one(self, *args, **kw):
        return self._get_target_class()(*args, **kw)

    def test_ctor(self):
        from google.cloud.dns.connection import Connection
        creds = _make_credentials()
        http = object()
        client = self._make_one(project=self.PROJECT, credentials=creds,
                                http=http)
        self.assertIsInstance(client._connection, Connection)
        self.assertIs(client._connection.credentials, creds)
        self.assertIs(client._connection.http, http)

    def test_quotas_defaults(self):
        PATH = 'projects/%s' % (self.PROJECT,)
        MANAGED_ZONES = 1234
        RRS_PER_RRSET = 23
        RRSETS_PER_ZONE = 345
        RRSET_ADDITIONS = 456
        RRSET_DELETIONS = 567
        TOTAL_SIZE = 67890
        DATA = {
            'quota': {
                'managedZones': str(MANAGED_ZONES),
                'resourceRecordsPerRrset': str(RRS_PER_RRSET),
                'rrsetsPerManagedZone': str(RRSETS_PER_ZONE),
                'rrsetAdditionsPerChange': str(RRSET_ADDITIONS),
                'rrsetDeletionsPerChange': str(RRSET_DELETIONS),
                'totalRrdataSizePerChange': str(TOTAL_SIZE),
            }
        }
        CONVERTED = {key: int(value)
                     for key, value in DATA['quota'].items()}
        creds = _make_credentials()
        client = self._make_one(self.PROJECT, creds)
        conn = client._connection = _Connection(DATA)

        quotas = client.quotas()

        self.assertEqual(quotas, CONVERTED)

        self.assertEqual(len(conn._requested), 1)
        req = conn._requested[0]
        self.assertEqual(req['method'], 'GET')
        self.assertEqual(req['path'], '/%s' % PATH)

    def test_quotas_w_kind_key(self):
        PATH = 'projects/%s' % (self.PROJECT,)
        MANAGED_ZONES = 1234
        RRS_PER_RRSET = 23
        RRSETS_PER_ZONE = 345
        RRSET_ADDITIONS = 456
        RRSET_DELETIONS = 567
        TOTAL_SIZE = 67890
        DATA = {
            'quota': {
                'managedZones': str(MANAGED_ZONES),
                'resourceRecordsPerRrset': str(RRS_PER_RRSET),
                'rrsetsPerManagedZone': str(RRSETS_PER_ZONE),
                'rrsetAdditionsPerChange': str(RRSET_ADDITIONS),
                'rrsetDeletionsPerChange': str(RRSET_DELETIONS),
                'totalRrdataSizePerChange': str(TOTAL_SIZE),
            }
        }
        CONVERTED = {key: int(value)
                     for key, value in DATA['quota'].items()}
        WITH_KIND = {'quota': DATA['quota'].copy()}
        WITH_KIND['quota']['kind'] = 'dns#quota'
        creds = _make_credentials()
        client = self._make_one(self.PROJECT, creds)
        conn = client._connection = _Connection(WITH_KIND)

        quotas = client.quotas()

        self.assertEqual(quotas, CONVERTED)

        self.assertEqual(len(conn._requested), 1)
        req = conn._requested[0]
        self.assertEqual(req['method'], 'GET')
        self.assertEqual(req['path'], '/%s' % PATH)

    def test_list_zones_defaults(self):
        import six
        from google.cloud.dns.zone import ManagedZone
        ID_1 = '123'
        ZONE_1 = 'zone_one'
        DNS_1 = 'one.example.com'
        ID_2 = '234'
        ZONE_2 = 'zone_two'
        DNS_2 = 'two.example.com'
        PATH = 'projects/%s/managedZones' % (self.PROJECT,)
        TOKEN = 'TOKEN'
        DATA = {
            'nextPageToken': TOKEN,
            'managedZones': [
                {'kind': 'dns#managedZone',
                 'id': ID_1,
                 'name': ZONE_1,
                 'dnsName': DNS_1},
                {'kind': 'dns#managedZone',
                 'id': ID_2,
                 'name': ZONE_2,
                 'dnsName': DNS_2},
            ]
        }
        creds = _make_credentials()
        client = self._make_one(self.PROJECT, creds)
        conn = client._connection = _Connection(DATA)

        iterator = client.list_zones()
        page = six.next(iterator.pages)
        zones = list(page)
        token = iterator.next_page_token

        self.assertEqual(len(zones), len(DATA['managedZones']))
        for found, expected in zip(zones, DATA['managedZones']):
            self.assertIsInstance(found, ManagedZone)
            self.assertEqual(found.zone_id, expected['id'])
            self.assertEqual(found.name, expected['name'])
            self.assertEqual(found.dns_name, expected['dnsName'])
        self.assertEqual(token, TOKEN)

        self.assertEqual(len(conn._requested), 1)
        req = conn._requested[0]
        self.assertEqual(req['method'], 'GET')
        self.assertEqual(req['path'], '/%s' % PATH)

    def test_list_zones_explicit(self):
        import six
        from google.cloud.dns.zone import ManagedZone
        ID_1 = '123'
        ZONE_1 = 'zone_one'
        DNS_1 = 'one.example.com'
        ID_2 = '234'
        ZONE_2 = 'zone_two'
        DNS_2 = 'two.example.com'
        PATH = 'projects/%s/managedZones' % (self.PROJECT,)
        TOKEN = 'TOKEN'
        DATA = {
            'managedZones': [
                {'kind': 'dns#managedZone',
                 'id': ID_1,
                 'name': ZONE_1,
                 'dnsName': DNS_1},
                {'kind': 'dns#managedZone',
                 'id': ID_2,
                 'name': ZONE_2,
                 'dnsName': DNS_2},
            ]
        }
        creds = _make_credentials()
        client = self._make_one(self.PROJECT, creds)
        conn = client._connection = _Connection(DATA)

        iterator = client.list_zones(max_results=3, page_token=TOKEN)
        page = six.next(iterator.pages)
        zones = list(page)
        token = iterator.next_page_token

        self.assertEqual(len(zones), len(DATA['managedZones']))
        for found, expected in zip(zones, DATA['managedZones']):
            self.assertIsInstance(found, ManagedZone)
            self.assertEqual(found.zone_id, expected['id'])
            self.assertEqual(found.name, expected['name'])
            self.assertEqual(found.dns_name, expected['dnsName'])
        self.assertIsNone(token)

        self.assertEqual(len(conn._requested), 1)
        req = conn._requested[0]
        self.assertEqual(req['method'], 'GET')
        self.assertEqual(req['path'], '/%s' % PATH)
        self.assertEqual(req['query_params'],
                         {'maxResults': 3, 'pageToken': TOKEN})

    def test_zone_explicit(self):
        from google.cloud.dns.zone import ManagedZone
        DESCRIPTION = 'DESCRIPTION'
        DNS_NAME = 'test.example.com'
        creds = _make_credentials()
        client = self._make_one(self.PROJECT, creds)
        zone = client.zone(self.ZONE_NAME, DNS_NAME, DESCRIPTION)
        self.assertIsInstance(zone, ManagedZone)
        self.assertEqual(zone.name, self.ZONE_NAME)
        self.assertEqual(zone.dns_name, DNS_NAME)
        self.assertEqual(zone.description, DESCRIPTION)
        self.assertIs(zone._client, client)

    def test_zone_w_dns_name_wo_description(self):
        from google.cloud.dns.zone import ManagedZone
        DNS_NAME = 'test.example.com'
        creds = _make_credentials()
        client = self._make_one(self.PROJECT, creds)
        zone = client.zone(self.ZONE_NAME, DNS_NAME)
        self.assertIsInstance(zone, ManagedZone)
        self.assertEqual(zone.name, self.ZONE_NAME)
        self.assertEqual(zone.dns_name, DNS_NAME)
        self.assertEqual(zone.description, DNS_NAME)
        self.assertIs(zone._client, client)

    def test_zone_wo_dns_name(self):
        from google.cloud.dns.zone import ManagedZone
        creds = _make_credentials()
        client = self._make_one(self.PROJECT, creds)
        zone = client.zone(self.ZONE_NAME)
        self.assertIsInstance(zone, ManagedZone)
        self.assertEqual(zone.name, self.ZONE_NAME)
        self.assertIsNone(zone.dns_name)
        self.assertIsNone(zone.description)
        self.assertIs(zone._client, client)


class _Connection(object):

    def __init__(self, *responses):
        self._responses = responses
        self._requested = []

    def api_request(self, **kw):
        self._requested.append(kw)
        response, self._responses = self._responses[0], self._responses[1:]
        return response
