# Copyright 2018 Google Inc. 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.
"""Retrieve information about a client cert for a Cloud SQL instance."""

from __future__ import absolute_import
from __future__ import unicode_literals
from googlecloudsdk.api_lib.sql import api_util
from googlecloudsdk.api_lib.sql import cert
from googlecloudsdk.api_lib.sql import validate
from googlecloudsdk.calliope import base
from googlecloudsdk.command_lib.sql import flags
from googlecloudsdk.core import properties


class _BaseGet(object):
  """Base class for sql ssl client_certs list."""

  @staticmethod
  def Args(parser):
    """Args is called by calliope to gather arguments for this command.

    Args:
      parser: An argparse parser that you can use it to add arguments that go
          on the command line after this command. Positional arguments are
          allowed.
    """
    parser.add_argument(
        'common_name',
        help='User supplied name. Constrained to ```[a-zA-Z.-_ ]+```.')
    flags.AddInstance(parser)

  def Run(self, args):
    """Retrieve information about a client cert for a Cloud SQL instance.

    Args:
      args: argparse.Namespace, The arguments that this command was invoked
          with.

    Returns:
      A dict object representing the sslCerts resource if the api request was
      successful.
    """
    client = api_util.SqlClient(api_util.API_VERSION_DEFAULT)
    sql_client = client.sql_client
    sql_messages = client.sql_messages

    validate.ValidateInstanceName(args.instance)
    instance_ref = client.resource_parser.Parse(
        args.instance,
        params={'project': properties.VALUES.core.project.GetOrFail},
        collection='sql.instances')

    # sha1fingerprint, so that things can work with the resource parser.
    return cert.GetCertFromName(sql_client, sql_messages, instance_ref,
                                args.common_name)


@base.ReleaseTracks(base.ReleaseTrack.GA, base.ReleaseTrack.BETA)
class Get(_BaseGet, base.DescribeCommand):
  """Retrieve information about a client cert for a Cloud SQL instance."""
  pass
