# -*- coding: utf-8 -*- #
# Copyright 2018 Google LLC. All Rights Reserved.
#
# 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.
"""Set the IAM policy for an attestor."""

from __future__ import absolute_import
from __future__ import division
from __future__ import unicode_literals

from googlecloudsdk.api_lib.container.binauthz import apis
from googlecloudsdk.api_lib.container.binauthz import iam
from googlecloudsdk.api_lib.container.binauthz import util
from googlecloudsdk.calliope import base
from googlecloudsdk.command_lib.iam import iam_util


@base.DefaultUniverseOnly
class SetIamPolicy(base.Command):
  """Set the IAM policy for an attestor.

  See https://cloud.google.com/iam/docs/managing-policies for details of
  the policy file format and contents.

  ## EXAMPLES
  The following command will read an IAM policy defined in a JSON file
  'iam_policy.json' and set it for the attestor `my_attestor`:

    $ {command} my_attestor iam_policy.json
  """
  # The above text is based on output of
  # iam_util.GetDetailedHelpForSetIamPolicy.

  @classmethod
  def Args(cls, parser):
    parser.add_argument(
        'attestor_name',
        help=('The name of the attestor '
              'whose IAM policy will be '
              'updated.'))
    parser.add_argument(
        'policy_file',
        help=('The JSON or YAML '
              'file containing the IAM policy.'))

  def Run(self, args):
    api_version = apis.GetApiVersion(self.ReleaseTrack())
    client = iam.Client(api_version)
    attestor_ref = util.GetAttestorRef(args.attestor_name)

    policy, _ = iam_util.ParseYamlOrJsonPolicyFile(args.policy_file,
                                                   client.messages.IamPolicy)

    result = client.Set(attestor_ref, policy)
    iam_util.LogSetIamPolicy(attestor_ref.Name(), 'attestor')
    return result