# -*- coding: utf-8 -*- #
# Copyright 2014 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.
"""Command for describing target TCP proxies."""


from googlecloudsdk.api_lib.compute import base_classes
from googlecloudsdk.api_lib.compute import utils
from googlecloudsdk.calliope import base
from googlecloudsdk.command_lib.compute import scope as compute_scope
from googlecloudsdk.command_lib.compute.target_tcp_proxies import flags


@base.UniverseCompatible
@base.ReleaseTracks(base.ReleaseTrack.GA, base.ReleaseTrack.PREVIEW)
class Describe(base.DescribeCommand):
  """Display detailed information about a target TCP proxy."""

  TARGET_TCP_PROXY_ARG = None

  @classmethod
  def Args(cls, parser):
    cls.TARGET_TCP_PROXY_ARG = flags.TargetTcpProxyArgument(allow_regional=True)
    cls.TARGET_TCP_PROXY_ARG.AddArgument(parser, operation_type='describe')

  def Run(self, args):
    holder = base_classes.ComputeApiHolder(self.ReleaseTrack())
    ref = self.TARGET_TCP_PROXY_ARG.ResolveAsResource(
        args, holder.resources, default_scope=compute_scope.ScopeEnum.GLOBAL)

    return self._MakeRequest(ref, holder)

  def _MakeRequest(self, ref, holder):
    if ref.Collection() == 'compute.regionTargetTcpProxies':
      return self._MakeRegionalRequest(ref, holder)
    return self._MakeGlobalRequest(ref, holder)

  def _MakeRegionalRequest(self, ref, holder):
    client = holder.client.apitools_client
    messages = holder.client.messages
    request = messages.ComputeRegionTargetTcpProxiesGetRequest(
        project=ref.project, targetTcpProxy=ref.Name(), region=ref.region)

    errors = []
    resources = holder.client.MakeRequests(
        [(client.regionTargetTcpProxies, 'Get', request)], errors)

    if errors:
      utils.RaiseToolException(errors)
    return resources[0]

  def _MakeGlobalRequest(self, ref, holder):
    client = holder.client.apitools_client
    messages = holder.client.messages
    request = messages.ComputeTargetTcpProxiesGetRequest(
        project=ref.project, targetTcpProxy=ref.Name())

    errors = []
    resources = holder.client.MakeRequests(
        [(client.targetTcpProxies, 'Get', request)], errors)

    if errors:
      utils.RaiseToolException(errors)
    return resources[0]


@base.UniverseCompatible
@base.ReleaseTracks(base.ReleaseTrack.ALPHA, base.ReleaseTrack.BETA)
class DescribeAlphaBeta(Describe):
  pass


Describe.detailed_help = {
    'brief':
        'Display detailed information about a target TCP proxy',
    'DESCRIPTION':
        """\
        *{command}* displays all data associated with a target TCP proxy
        in a project.
        """,
}
