# 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.
"""The `app regions list` command."""

from googlecloudsdk.api_lib.app import appengine_api_client
from googlecloudsdk.calliope import base


class List(base.ListCommand):
  """List the availability of flex and standard environments for each region."""

  detailed_help = {
      'DESCRIPTION': '{description}',
      'EXAMPLES': """\
          To view regional availability of App Engine runtime environments, run:

              $ {command}
          """,
  }

  def Collection(self):
    return 'appengine.regions'

  def Run(self, args):
    api_client = appengine_api_client.GetApiClient()
    return sorted(api_client.ListRegions())
