# -*- coding: utf-8 -*- #
# Copyright 2021 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.
"""Command to create a Dataplex asset resource."""

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

from googlecloudsdk.api_lib.dataplex import asset
from googlecloudsdk.api_lib.dataplex import util as dataplex_util
from googlecloudsdk.api_lib.util import exceptions as gcloud_exception
from googlecloudsdk.calliope import base
from googlecloudsdk.command_lib.dataplex import flags
from googlecloudsdk.command_lib.dataplex import resource_args
from googlecloudsdk.command_lib.util.apis import arg_utils
from googlecloudsdk.command_lib.util.args import labels_util
from googlecloudsdk.core import log


def _CommonArgs(parser):
  """Create a common args."""
  resource_args.AddAssetResourceArg(parser, 'to create.')
  parser.add_argument(
      '--validate-only',
      action='store_true',
      default=False,
      help="Validate the create action, but don't actually perform it.",
  )
  parser.add_argument('--description', help='Description of the asset')
  parser.add_argument('--display-name', help='Display name of the asset')
  flags.AddDiscoveryArgs(parser)
  base.ASYNC_FLAG.AddToParser(parser)
  labels_util.AddCreateLabelsFlags(parser)


@base.ReleaseTracks(base.ReleaseTrack.GA)
class Create(base.Command):
  """Create a Dataplex asset resource.

  An asset represents a cloud resource that is being managed within a lake as a
  member of a zone.

  This asset ID will be used to generate names such as table names when
  publishing metadata to Hive Metastore and BigQuery.
   * Must contain only lowercase letters, numbers, and hyphens.
   * Must start with a letter.
   * Must end with a number or a letter.
   * Must be between 1-63 characters.
   * Must be unique within the zone.
  """

  detailed_help = {
      'EXAMPLES':
          """\
          To create a Dataplex asset with name `test-asset`, within zone
          `test-zone`, in lake `test-lake`, in location `us-central1`, with
          resource type `STORAGE_BUCKET`, with resource name
          `projects/test-project/buckets/test-bucket`, run:

            $ {command} test-asset --location=us-central --lake=test-lake --zone=test-zone --resource-type=STORAGE_BUCKET --resource-name=projects/test-project/buckets/test-bucket

          To create a Dataplex asset with name `test-asset`, within zone
          `test-zone`, in lake `test-lake`, in location `us-central1`, with
          resource type `STORAGE_BUCKET`, with resource name
          `projects/test-project/buckets/test-bucket`, with discovery-enabled,
          and discovery schedule `0 * * * *`, run:

            $ {command} test-asset --location=us-central --lake=test-lake --zone=test-zone --resource-type=STORAGE_BUCKET --resource-name=projects/test-project/buckets/test-bucket --discovery-enabled --discovery-schedule="0 * * * *"
          """,
  }

  @staticmethod
  def Args(parser):
    _CommonArgs(parser)
    resource_spec = parser.add_group(
        required=True,
        help='Specification of the resource that is referenced by this asset.',
    )
    resource_spec.add_argument(
        '--resource-name',
        help=""""Relative name of the cloud resource that contains the data that
                 is being managed within a lake. For example:
                 `projects/{project_number}/buckets/{bucket_id}` or  `projects/{project_number}/datasets/{dataset_id}`""",
    )
    resource_spec.add_argument(
        '--resource-type',
        required=True,
        choices={
            'STORAGE_BUCKET': 'Cloud Storage Bucket',
            'BIGQUERY_DATASET': 'BigQuery Dataset',
        },
        type=arg_utils.ChoiceToEnumName,
        help='Type',
    )
    resource_spec.add_argument(
        '--resource-read-access-mode',
        required=False,
        choices={
            'DIRECT': 'Data is accessed directly using storage APIs',
            'MANAGED': (
                'Data is accessed through a managed interface using BigQuery'
                ' APIs.'
            ),
        },
        type=arg_utils.ChoiceToEnumName,
        help='Read access mode',
    )

  def GenerateRequest(self, args):
    return asset.GenerateAssetForCreateRequest(args)

  @gcloud_exception.CatchHTTPErrorRaiseHTTPException(
      'Status code: {status_code}. {status_message}.')
  def Run(self, args):
    asset_ref = args.CONCEPTS.asset.Parse()
    dataplex_client = dataplex_util.GetClientInstance()
    create_req_op = dataplex_client.projects_locations_lakes_zones_assets.Create(
        dataplex_util.GetMessageModule().DataplexProjectsLocationsLakesZonesAssetsCreateRequest(
            assetId=asset_ref.Name(),
            parent=asset_ref.Parent().RelativeName(),
            validateOnly=args.validate_only,
            googleCloudDataplexV1Asset=self.GenerateRequest(args),
        )
    )
    validate_only = getattr(args, 'validate_only', False)
    if validate_only:
      log.status.Print('Validation complete.')
      return

    async_ = getattr(args, 'async_', False)
    if not async_:
      asset.WaitForOperation(create_req_op)
      log.CreatedResource(
          asset_ref.Name(),
          details='Asset created in [{0}]'
          .format(asset_ref.Parent().RelativeName()))
      return

    log.status.Print('Creating [{0}] with operation [{1}].'.format(
        asset_ref, create_req_op.name))


@base.ReleaseTracks(base.ReleaseTrack.ALPHA)
class CreateAlpha(Create):
  """Create a Dataplex asset resource.

  An asset represents a cloud resource that is being managed within a lake as a
  member of a zone.

  This asset ID will be used to generate names such as table names when
  publishing metadata to Hive Metastore and BigQuery.
   * Must contain only lowercase letters, numbers, and hyphens.
   * Must start with a letter.
   * Must end with a number or a letter.
   * Must be between 1-63 characters.
   * Must be unique within the zone.
  """

  detailed_help = {
      'EXAMPLES': """\
          To create a Dataplex asset with name `test-asset`, within zone
          `test-zone`, in lake `test-lake`, in location `us-central1`, with
          resource type `STORAGE_BUCKET`, with resource name
          `projects/test-project/buckets/test-bucket`, run:

            $ {command} test-asset --location=us-central --lake=test-lake --zone=test-zone --resource-type=STORAGE_BUCKET --resource-name=projects/test-project/buckets/test-bucket

          To create a Dataplex asset with name `test-asset`, within zone
          `test-zone`, in lake `test-lake`, in location `us-central1`, with
          resource type `STORAGE_BUCKET`, with resource name
          `projects/test-project/buckets/test-bucket`, with discovery-enabled,
          and discovery schedule `0 * * * *`, run:

            $ {command} test-asset --location=us-central --lake=test-lake --zone=test-zone --resource-type=STORAGE_BUCKET --resource-name=projects/test-project/buckets/test-bucket --discovery-enabled --discovery-schedule="0 * * * *"
          """,
  }

  def GenerateRequest(self, args):
    return asset.GenerateAssetForCreateRequestAlpha(args)

  @staticmethod
  def Args(parser):
    _CommonArgs(parser)
    resource_spec = parser.add_group(
        required=True,
        help='Specification of the resource that is referenced by this asset.',
    )
    resource_spec.add_argument(
        '--resource-name',
        help=""""Relative name of the cloud resource that contains the data that
                 is being managed within a lake. For example:
                 `projects/{project_number}/buckets/{bucket_id}` or  `projects/{project_number}/datasets/{dataset_id}`""",
    )
    resource_spec.add_argument(
        '--resource-type',
        required=True,
        choices={
            'STORAGE_BUCKET': 'Cloud Storage Bucket',
            'BIGQUERY_DATASET': 'BigQuery Dataset',
        },
        type=arg_utils.ChoiceToEnumName,
        help='Type',
    )
    resource_spec.add_argument(
        '--resource-read-access-mode',
        required=False,
        choices={
            'DIRECT': 'Data is accessed directly using storage APIs',
            'MANAGED': (
                'Data is accessed through a managed interface using BigQuery'
                ' APIs.'
            ),
        },
        type=arg_utils.ChoiceToEnumName,
        help='Read access mode',
    )