# -*- coding: utf-8 -*- #
# Copyright 2019 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.
"""Public advertised prefixes api client."""

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

from googlecloudsdk.api_lib.compute.operations import poller
from googlecloudsdk.api_lib.util import waiter
from googlecloudsdk.command_lib.util.apis import arg_utils


class PublicAdvertisedPrefixesClient(object):
  """Client for public advertised prefixes service in the GCE API."""

  def __init__(self, client, messages, resources):
    self.client = client
    self.messages = messages
    self.resources = resources
    self._service = self.client.apitools_client.publicAdvertisedPrefixes

  def Create(self,
             pap_ref,
             ip_cidr_range,
             dns_verification_ip,
             description,
             pdp_scope,
             ipv6_access_type):
    """Creates a public advertised prefix."""

    if pdp_scope:
      public_advertised_prefix = self.messages.PublicAdvertisedPrefix(
          name=pap_ref.Name(),
          ipCidrRange=ip_cidr_range,
          description=description,
          pdpScope=pdp_scope)
    else:
      public_advertised_prefix = self.messages.PublicAdvertisedPrefix(
          name=pap_ref.Name(),
          ipCidrRange=ip_cidr_range,
          description=description)

    if dns_verification_ip is not None:
      public_advertised_prefix.dnsVerificationIp = dns_verification_ip

    if ipv6_access_type is not None:
      public_advertised_prefix.ipv6AccessType = ipv6_access_type

    request = self.messages.ComputePublicAdvertisedPrefixesInsertRequest(
        publicAdvertisedPrefix=public_advertised_prefix,
        project=pap_ref.project)

    return self.client.MakeRequests([(self._service, 'Insert', request)])[0]

  def Delete(self, pap_ref):
    """Deletes a public advertised prefix."""

    request = self.messages.ComputePublicAdvertisedPrefixesDeleteRequest(
        publicAdvertisedPrefix=pap_ref.Name(), project=pap_ref.project)

    return self.client.MakeRequests([(self._service, 'Delete', request)])

  def Announce(self, pap_ref):
    """Announce a public advertised prefix."""

    request = self.messages.ComputePublicAdvertisedPrefixesAnnounceRequest(
        publicAdvertisedPrefix=pap_ref.Name(), project=pap_ref.project)

    return self.client.MakeRequests([(self._service, 'Announce', request)])

  def Withdraw(self, pap_ref):
    """Withdraw a public advertised prefix."""

    request = self.messages.ComputePublicAdvertisedPrefixesWithdrawRequest(
        publicAdvertisedPrefix=pap_ref.Name(), project=pap_ref.project)

    return self.client.MakeRequests([(self._service, 'Withdraw', request)])

  def Patch(self, pap_ref, status):
    """Updates public advertised prefix."""

    status = arg_utils.ChoiceToEnum(
        status, self.messages.PublicAdvertisedPrefix.StatusValueValuesEnum)
    original_pap = self._service.Get(
        self.client.messages.ComputePublicAdvertisedPrefixesGetRequest(
            **pap_ref.AsDict()))

    request = self.messages.ComputePublicAdvertisedPrefixesPatchRequest(
        project=pap_ref.project,
        publicAdvertisedPrefix=pap_ref.Name(),
        publicAdvertisedPrefixResource=self.messages.PublicAdvertisedPrefix(
            status=status, fingerprint=original_pap.fingerprint))

    operation = self._service.Patch(request)
    operation_ref = self.resources.Parse(
        operation.selfLink, collection='compute.globalOperations')

    operation_poller = poller.Poller(self._service)
    return waiter.WaitFor(
        operation_poller, operation_ref,
        'Updating public advertised prefix [{}].'.format(pap_ref.Name()))