# -*- coding: utf-8 -*- #
# Copyright 2017 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.
"""Describe a key."""

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

from googlecloudsdk.api_lib.cloudkms import base as cloudkms_base
from googlecloudsdk.calliope import base
from googlecloudsdk.calliope import exceptions
from googlecloudsdk.command_lib.kms import resource_args


class Describe(base.DescribeCommand):
  """Get metadata for a given key.

  Returns metadata for the given key.

  ## EXAMPLES

  The following command returns metadata for the key `frodo` within
  the keyring `fellowship` in the location `us-east1`:

    $ {command} frodo --keyring=fellowship --location=us-east1
  """

  @staticmethod
  def Args(parser):
    resource_args.AddKmsKeyResourceArgForKMS(parser, True, 'key')

  def Run(self, args):
    client = cloudkms_base.GetClientInstance()
    messages = cloudkms_base.GetMessagesModule()

    crypto_key_ref = args.CONCEPTS.key.Parse()
    if not crypto_key_ref.Name():
      raise exceptions.InvalidArgumentException('key',
                                                'key id must be non-empty.')
    resp = client.projects_locations_keyRings_cryptoKeys.Get(
        messages.CloudkmsProjectsLocationsKeyRingsCryptoKeysGetRequest(
            name=crypto_key_ref.RelativeName()))

    # Suppress the attestation in the response, if there is one. Users can use
    # keys versions describe --attestation-file to obtain it, instead.
    if resp.primary and resp.primary.attestation:
      resp.primary.attestation = None

    return resp
