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#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
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#
#    http://www.apache.org/licenses/LICENSE-2.0
#
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"""Implementation of gcloud genomics datasets set-iam-policy.
"""

from googlecloudsdk.api_lib.genomics import genomics_util
from googlecloudsdk.calliope import base
from googlecloudsdk.core import resources
from googlecloudsdk.core.iam import iam_util


class SetIamPolicy(base.Command):
  """Set IAM policy for a dataset.

  This command sets the IAM policy for a dataset, given a dataset ID and a
  file that contains the JSON encoded IAM policy.
  """

  detailed_help = iam_util.GetDetailedHelpForSetIamPolicy('dataset', '1000')

  @staticmethod
  def Args(parser):
    parser.add_argument('id', type=str,
                        help='The ID of the dataset.')
    parser.add_argument('policy_file', help='JSON file with the IAM policy')

  @genomics_util.ReraiseHttpException
  def Run(self, args):
    apitools_client = genomics_util.GetGenomicsClient()
    messages = genomics_util.GetGenomicsMessages()

    dataset_resource = resources.Parse(args.id, collection='genomics.datasets')

    policy = iam_util.ParseJsonPolicyFile(args.policy_file, messages.Policy)

    policy_request = messages.GenomicsDatasetsSetIamPolicyRequest(
        resource='datasets/{0}'.format(dataset_resource.Name()),
        setIamPolicyRequest=messages.SetIamPolicyRequest(policy=policy),
    )
    return apitools_client.datasets.SetIamPolicy(policy_request)
