# Copyright 2017 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,
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"""Command for describing security policies rules."""
from __future__ import absolute_import
from __future__ import division

from __future__ import unicode_literals
from googlecloudsdk.api_lib.compute import base_classes
from googlecloudsdk.api_lib.compute.security_policies import client
from googlecloudsdk.calliope import base
from googlecloudsdk.command_lib.compute.security_policies import flags as security_policy_flags
from googlecloudsdk.command_lib.compute.security_policies.rules import flags
from googlecloudsdk.core import properties


class Describe(base.DescribeCommand):
  """Describe a Google Compute Engine security policy rule.

  *{command}* displays all data associated with a security policy rule.
  """

  SECURITY_POLICY_ARG = None

  @classmethod
  def Args(cls, parser):
    flags.AddPriority(parser, 'describe')
    cls.SECURITY_POLICY_ARG = (
        security_policy_flags.SecurityPolicyArgumentForRules())
    cls.SECURITY_POLICY_ARG.AddArgument(parser)

  def Run(self, args):
    holder = base_classes.ComputeApiHolder(self.ReleaseTrack())
    ref = holder.resources.Parse(
        args.name,
        collection='compute.securityPolicyRules',
        params={
            'project': properties.VALUES.core.project.GetOrFail,
            'securityPolicy': args.security_policy
        })
    security_policy_rule = client.SecurityPolicyRule(
        ref, compute_client=holder.client)

    return security_policy_rule.Describe()
