# -*- coding: utf-8 -*- #
# Copyright 2021 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.
"""Implementation of create command for making buckets."""

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

from googlecloudsdk.calliope import arg_parsers
from googlecloudsdk.calliope import base
from googlecloudsdk.command_lib.storage import errors
from googlecloudsdk.command_lib.storage import errors_util
from googlecloudsdk.command_lib.storage import flags
from googlecloudsdk.command_lib.storage import storage_url
from googlecloudsdk.command_lib.storage import user_request_args_factory
from googlecloudsdk.command_lib.storage.resources import resource_reference
from googlecloudsdk.command_lib.storage.tasks.buckets import create_bucket_task

_LIFECYCLE_HELP_TEXT = """
Sets the lifecycle management configuration on a bucket. For example,
The following lifecycle management configuration JSON document
specifies that all objects in this bucket that are more than 365 days
old are deleted automatically:

  {
    "rule":
    [
      {
        "action": {"type": "Delete"},
        "condition": {"age": 365}
      }
    ]
  }
"""


@base.UniverseCompatible
class Create(base.Command):
  """Create buckets for storing objects."""

  detailed_help = {
      'DESCRIPTION': """
      Create new buckets.
      """,
      'EXAMPLES': """

      The following command creates 2 Cloud Storage buckets, one named
      ``my-bucket'' and a second bucket named ``my-other-bucket'':

        $ {command} gs://my-bucket gs://my-other-bucket

      The following command creates a bucket with the ``nearline'' default
      [storage class](https://cloud.google.com/storage/docs/storage-classes) in
      the ``asia'' [location](https://cloud.google.com/storage/docs/locations):

        $ {command} gs://my-bucket --default-storage-class=nearline --location=asia
      """,
  }

  @classmethod
  def Args(cls, parser):
    parser.add_argument(
        'url', type=str, nargs='+', help='The URLs of the buckets to create.'
    )
    parser.add_argument(
        '--location',
        '-l',
        type=str,
        required=arg_parsers.ArgRequiredInUniverse(
            default_universe=False, non_default_universe=True
        ),
        help=(
            '[Location](https://cloud.google.com/storage/docs/locations)'
            ' for the bucket. If not specified, the location used by Cloud'
            " Storage is ``us''. A bucket's location cannot be changed"
            ' after creation.'
        ),
    )
    parser.add_argument(
        '--public-access-prevention',
        '--pap',
        action=arg_parsers.StoreTrueFalseAction,
        help=(
            'Sets public access prevention to "enforced".'
            ' For details on how exactly public access is blocked, see:'
            ' http://cloud.google.com/storage/docs/public-access-prevention'
        ),
    )
    parser.add_argument(
        '--uniform-bucket-level-access',
        '-b',
        action=arg_parsers.StoreTrueFalseAction,
        help='Turns on uniform bucket-level access setting. Default is False.',
    )
    parser.add_argument(
        '--default-storage-class',
        '-c',
        '-s',
        type=str,
        help=(
            'Default [storage class]'
            '(https://cloud.google.com/storage/docs/storage-classes) for'
            ' the bucket. If not specified, the default storage class'
            ' used by Cloud Storage is "Standard".'
        ),
    )
    parser.add_argument(
        '--default-encryption-key',
        '-k',
        type=str,
        help=(
            'Set the default KMS key using the full path to the key, which '
            'has the following form: '
            "``projects/[project-id]/locations/[location]/keyRings/[key-ring]/cryptoKeys/[my-key]''."
        ),
    )
    parser.add_argument(
        '--retention-period',
        help=(
            'Minimum [retention period](https://cloud.google.com'
            '/storage/docs/bucket-lock#retention-periods)'
            ' for objects stored in the bucket, for example'
            " ``--retention-period=P1Y1M1DT5S''. Objects added to the bucket"
            " cannot be deleted until they've been stored for the specified"
            ' length of time. Default is no retention period. Only available'
            ' for Cloud Storage using the JSON API.'
        ),
    )
    flags.add_placement_flag(parser)
    parser.add_argument(
        '--soft-delete-duration',
        type=arg_parsers.Duration(),
        help=(
            'Duration to retain soft-deleted objects. For example, "2w1d" is'
            ' two weeks and one day. See `gcloud topic datetimes` for more'
            ' information on the duration format. Setting `0` will disable'
            ' soft delete policy on the bucket. Default is 7 days.'
        ),
    )
    flags.add_additional_headers_flag(parser)
    flags.add_autoclass_flags(parser)
    flags.add_enable_per_object_retention_flag(parser)
    flags.add_recovery_point_objective_flag(parser)

    parser.add_argument(
        '--enable-hierarchical-namespace',
        action='store_true',
        default=None,
        help=(
            'Enable hierarchical namespace for the bucket. To use this'
            ' flag, you must also use --uniform-bucket-level-access'
        ),
    )

    parser.add_argument('--lifecycle-file', help=_LIFECYCLE_HELP_TEXT)
    flags.add_ip_filter_file_flag(parser)
    if cls.ReleaseTrack() is base.ReleaseTrack.ALPHA:
      flags.add_encryption_enforcement_file_flag(parser)

  def Run(self, args):
    for url_string in args.url:
      url = storage_url.storage_url_from_string(url_string)
      errors_util.raise_error_if_not_bucket(args.command_path, url)
      resource = resource_reference.UnknownResource(url)
      user_request_args = (
          user_request_args_factory.get_user_request_args_from_command_args(
              args, metadata_type=user_request_args_factory.MetadataType.BUCKET
          )
      )
      if (
          user_request_args.resource_args.autoclass_terminal_storage_class
          is not None
          and not user_request_args.resource_args.enable_autoclass
      ):
        raise errors.Error(
            '--autoclass_terminal_storage_class is only allowed if'
            ' --enable-autoclass is set.'
        )
      create_bucket_task.CreateBucketTask(
          resource, user_request_args=user_request_args
      ).execute()
