# Copyright 2016 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.
"""bigtable instances update command."""

from __future__ import absolute_import
from __future__ import unicode_literals
from googlecloudsdk.api_lib.bigtable import util as bigtable_util
from googlecloudsdk.calliope import actions
from googlecloudsdk.calliope import base
from googlecloudsdk.command_lib.bigtable import arguments
from googlecloudsdk.core import log


class UpdateInstance(base.UpdateCommand):
  """Modify an existing Bigtable instance."""

  @staticmethod
  def Args(parser):
    """Register flags for this command."""
    arguments.ArgAdder(parser).AddInstance().AddInstanceDisplayName()

    # Add removed argument as hidden with error pointing to new command
    parser.add_argument(
        '--instance-type',
        action=actions.DeprecationAction(
            '--instance-type',
            removed=True,
            error=('Upgrading development instances with --instance-type has '
                   'been removed. Use the bigtable instances upgrade command '
                   'instead.')),
        help=('Change the instance type. Note development instances can '
              'be promoted to production instances, but production '
              'instances cannot be downgraded to development.'),
        hidden=True)

  def Run(self, args):
    """This is what gets called when the user runs this command.

    Args:
      args: an argparse namespace. All the arguments that were provided to this
        command invocation.

    Returns:
      Some value that we want to have printed later.
    """
    cli = bigtable_util.GetAdminClient()
    ref = bigtable_util.GetInstanceRef(args.instance)
    msgs = bigtable_util.GetAdminMessages()
    instance = cli.projects_instances.Get(
        msgs.BigtableadminProjectsInstancesGetRequest(name=ref.RelativeName()))
    instance.state = None  # must be unset when calling Update

    if args.display_name:
      instance.displayName = args.display_name

    instance = cli.projects_instances.Update(instance)
    log.UpdatedResource(instance.name, kind='instance')
    return instance
