# -*- coding: utf-8 -*- #
# Copyright 2016 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.
"""bigtable instances update command."""

import textwrap

from googlecloudsdk.api_lib.bigtable import util as bigtable_util
from googlecloudsdk.calliope import base
from googlecloudsdk.command_lib.bigtable import arguments
from googlecloudsdk.core import log


@base.UniverseCompatible
@base.ReleaseTracks(base.ReleaseTrack.GA, base.ReleaseTrack.BETA)
class UpdateInstance(base.UpdateCommand):
  """Modify an existing Bigtable instance."""

  detailed_help = {
      'EXAMPLES': textwrap.dedent("""\
          To update the display name for an instance, run:

            $ {command} my-instance-id --display-name="Updated Instance Name"

          To update the edition for an instance to ENTERPRISE_PLUS, run:

            $ {command} my-instance-id --edition=ENTERPRISE_PLUS
          """),
  }

  @staticmethod
  def Args(parser):
    """Register flags for this command."""
    arguments.ArgAdder(parser).AddInstanceDisplayName().AddInstanceEdition()
    arguments.AddInstanceResourceArg(parser, 'to update', positional=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 = msgs.Instance(name=ref.RelativeName())
    update_mask = []
    if args.display_name is not None:
      instance.displayName = args.display_name
      update_mask.append('display_name')

    if args.edition is not None:
      instance.edition = msgs.Instance.EditionValueValuesEnum(args.edition)
      update_mask.append('edition')

    if not update_mask:
      log.status.Print('No updates specified.')
      return None

    req = msgs.BigtableadminProjectsInstancesPartialUpdateInstanceRequest(
        instance=instance,
        name=ref.RelativeName(),
        updateMask=','.join(update_mask),
    )
    instance = cli.projects_instances.PartialUpdateInstance(req)
    log.UpdatedResource(instance.name, kind='instance')
    return instance


@base.ReleaseTracks(base.ReleaseTrack.ALPHA)
class UpdateInstanceAlpha(UpdateInstance):
  """Modify an existing Bigtable instance."""

  @staticmethod
  def Args(parser):
    super(UpdateInstanceAlpha, UpdateInstanceAlpha).Args(parser)
