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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 variants describe.
"""
from __future__ import absolute_import
from __future__ import unicode_literals
from googlecloudsdk.api_lib.genomics import genomics_util
from googlecloudsdk.calliope import base


class Describe(base.DescribeCommand):
  """Returns details about a variant.
  """

  @staticmethod
  def Args(parser):
    """Register flags for this command."""
    parser.add_argument('id',
                        help='The ID of the variant to be described.')

  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.

    Returns:
      a Variant message
    """
    apitools_client = genomics_util.GetGenomicsClient()
    genomics_messages = genomics_util.GetGenomicsMessages()

    request = genomics_messages.GenomicsVariantsGetRequest(
        variantId=args.id,
    )

    return apitools_client.variants.Get(request)
