text: # -*- coding: utf-8 -*- #
  # Copyright 2019 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.
  """List command for the Label Manager - Label Bindings CLI."""
  
  from __future__ import absolute_import
  from __future__ import division
  from __future__ import unicode_literals
  
  from googlecloudsdk.api_lib.labelmanager import service as labelmanager
  from googlecloudsdk.calliope import base
  from googlecloudsdk.command_lib.labelmanager import arguments
  from googlecloudsdk.command_lib.labelmanager import utils
  
  
  @base.Hidden
  @base.ReleaseTracks(base.ReleaseTrack.ALPHA)
  # TODO(b/145234946): Add e2e test for ListLabelBindings and test --uri flag.
  class List(base.ListCommand):
    """Lists LabelBindings bound to the specified resource or LabelValue.
  
      Only a resource or a LabelValue should be specified. When specifying
      a resource, the full name of the resource must be used. See:
      https://cloud.google.com/apis/design/resource_names#full_resource_name.
      The LabelValue can be represented with it's numeric id or with it's display
      name along with details on the parent LabelKey. The LabelKey's details
      can be passed as a numeric id or the display name along with the
      label-parent.
    """
  
    detailed_help = {
        'EXAMPLES':
            """
            To list LabelBindings for '//cloudresourcemanager.googleapis.com/projects/123' run:
  
              $ {command} --resource='//cloudresourcemanager.googleapis.com/projects/123'
  
            To list LabelBindings for labelValues/456 run:
  
              $ {command} labelValues/456
  
            To list LabelBindings for LabelValue 'test' under LabelKey 'labelKeys/789'
            run:
  
              $ {command} test --label-key='labelKeys/789'
  
            To list LabelBindings for LabelValue 'test' under LabelKey 'env' that
            lives under 'organizations/999' run:
  
              $ {command} test --label-key='env' --label-parent='organizations/999'
            """
    }
  
    @staticmethod
    def Args(parser):
      # Does nothing for us, included in base.ListCommand
      base.URI_FLAG.RemoveFromParser(parser)
  
      mutex_group = parser.add_argument_group(
          'ListLabelBindings.', required=True, mutex=True)
      label_group = mutex_group.add_argument_group('LabelValue.', required=False)
      arguments.AddLabelValueIdArgToParser(label_group)
      arguments.AddLabelKeyArgToParser(
          label_group,
          required=False,
          message=(' --label-key is required when using display name instead '
                   'of numeric id for LABEL_VALUE_ID.'))
      arguments.AddLabelParentArgToParser(
          label_group,
          required=False,
          message=(' --label-parent is required when using display name instead '
                   'of numeric id for the --label-key.'))
      arguments.AddResourceArgToParser(
          mutex_group,
          required=False,
          message=('Full resource name of the resource that the LabelValue is '
                   'bound to.'))
  
    def Run(self, args):
      labelbindings_service = labelmanager.LabelBindingsService()
      labelmanager_messages = labelmanager.LabelManagerMessages()
  
      if args.IsSpecified('resource'):
        request = (
            labelmanager_messages.LabelmanagerLabelBindingsListRequest(
                filter='resource:'+args.resource))
      else:
        label_value = utils.GetLabelValueIfArgsAreValid(args)
        request = (
            labelmanager_messages.LabelmanagerLabelBindingsListRequest(
                filter='labelValue:'+label_value))
      return labelbindings_service.List(request)
  