# -*- 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.

"""Cloud Pub/Sub snapshots delete command."""

from __future__ import absolute_import
from __future__ import division
from __future__ import unicode_literals

from apitools.base.py import exceptions as api_ex

from googlecloudsdk.api_lib.pubsub import snapshots
from googlecloudsdk.api_lib.util import exceptions
from googlecloudsdk.calliope import base
from googlecloudsdk.command_lib.pubsub import util
from googlecloudsdk.core import log


class Delete(base.DeleteCommand):
  """Deletes one or more Cloud Pub/Sub snapshots."""

  @staticmethod
  def Args(parser):
    """Registers flags for this command."""

    parser.add_argument('snapshot', nargs='+',
                        help='One or more snapshot names to delete.')

  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.

    Yields:
      A serialized object (dict) describing the results of the operation.
      This description fits the Resource described in the ResourceRegistry under
      'pubsub.projects.snapshots'.

    Raises:
      util.RequestFailedError: if any of the requests to the API failed.
    """
    client = snapshots.SnapshotsClient()

    failed = []
    for snapshot_name in args.snapshot:
      snapshot_ref = util.ParseSnapshot(snapshot_name)

      try:
        client.Delete(snapshot_ref)
      except api_ex.HttpError as error:
        exc = exceptions.HttpException(error)
        log.DeletedResource(snapshot_ref.RelativeName(), kind='snapshot',
                            failed=exc.payload.status_message)
        failed.append(snapshot_name)
        continue

      result = util.SnapshotDisplayDict(
          client.messages.Snapshot(name=snapshot_ref.RelativeName()))
      log.DeletedResource(snapshot_ref.RelativeName(), kind='snapshot')
      yield result

    if failed:
      raise util.RequestsFailedError(failed, 'delete')
