# Copyright (C) 2013 eNovance SAS <licensing@enovance.com>
#
# Author: Joe H. Rahme <joe.hakim.rahme@enovance.com>
#
# 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.

from tempest.api.object_storage import base
from tempest import clients
from tempest.common.utils import data_utils
from tempest import config
from tempest import exceptions
from tempest import test

CONF = config.CONF


class AccountQuotasTest(base.BaseObjectTest):

    @classmethod
    def setUpClass(cls):
        super(AccountQuotasTest, cls).setUpClass()
        cls.container_name = data_utils.rand_name(name="TestContainer")
        cls.container_client.create_container(cls.container_name)

        cls.data.setup_test_user()

        cls.os_reselleradmin = clients.Manager(
            cls.data.test_user,
            cls.data.test_password,
            cls.data.test_tenant)

        # Retrieve the ResellerAdmin role id
        reseller_role_id = None
        try:
            _, roles = cls.os_admin.identity_client.list_roles()
            reseller_role_id = next(r['id'] for r in roles if r['name']
                                    == CONF.object_storage.reseller_admin_role)
        except StopIteration:
            msg = "No ResellerAdmin role found"
            raise exceptions.NotFound(msg)

        # Retrieve the ResellerAdmin tenant id
        _, users = cls.os_admin.identity_client.get_users()
        reseller_user_id = next(usr['id'] for usr in users if usr['name']
                                == cls.data.test_user)

        # Retrieve the ResellerAdmin tenant id
        _, tenants = cls.os_admin.identity_client.list_tenants()
        reseller_tenant_id = next(tnt['id'] for tnt in tenants if tnt['name']
                                  == cls.data.test_tenant)

        # Assign the newly created user the appropriate ResellerAdmin role
        cls.os_admin.identity_client.assign_user_role(
            reseller_tenant_id,
            reseller_user_id,
            reseller_role_id)

        # Retrieve a ResellerAdmin auth data and use it to set a quota
        # on the client's account
        cls.reselleradmin_auth_data = \
            cls.os_reselleradmin.auth_provider.auth_data

    def setUp(self):
        super(AccountQuotasTest, self).setUp()

        # Set the reselleradmin auth in headers for next custom_account_client
        # request
        self.custom_account_client.auth_provider.set_alt_auth_data(
            request_part='headers',
            auth_data=self.reselleradmin_auth_data
        )
        # Set a quota of 20 bytes on the user's account before each test
        headers = {"X-Account-Meta-Quota-Bytes": "20"}

        self.os.custom_account_client.request("POST", "", headers, "")

    def tearDown(self):
        # Set the reselleradmin auth in headers for next custom_account_client
        # request
        self.custom_account_client.auth_provider.set_alt_auth_data(
            request_part='headers',
            auth_data=self.reselleradmin_auth_data
        )
        # remove the quota from the container
        headers = {"X-Remove-Account-Meta-Quota-Bytes": "x"}

        self.os.custom_account_client.request("POST", "", headers, "")
        super(AccountQuotasTest, self).tearDown()

    @classmethod
    def tearDownClass(cls):
        cls.delete_containers([cls.container_name])
        cls.data.teardown_all()
        super(AccountQuotasTest, cls).tearDownClass()

    @test.attr(type="smoke")
    @test.requires_ext(extension='account_quotas', service='object')
    def test_upload_valid_object(self):
        object_name = data_utils.rand_name(name="TestObject")
        data = data_utils.arbitrary_string()
        resp, _ = self.object_client.create_object(self.container_name,
                                                   object_name, data)

        self.assertEqual(resp["status"], "201")
        self.assertHeaders(resp, 'Object', 'PUT')

    @test.attr(type=["smoke"])
    @test.requires_ext(extension='account_quotas', service='object')
    def test_admin_modify_quota(self):
        """Test that the ResellerAdmin is able to modify and remove the quota
        on a user's account.

        Using the custom_account client, the test modifies the quota
        successively to:

        * "25": a random value different from the initial quota value.
        * ""  : an empty value, equivalent to the removal of the quota.
        * "20": set the quota to its initial value.
        """
        for quota in ("25", "", "20"):

            self.custom_account_client.auth_provider.set_alt_auth_data(
                request_part='headers',
                auth_data=self.reselleradmin_auth_data
            )
            headers = {"X-Account-Meta-Quota-Bytes": quota}

            resp, _ = self.os.custom_account_client.request("POST", "",
                                                            headers, "")

            self.assertEqual(resp["status"], "204")
            self.assertHeaders(resp, 'Account', 'POST')