# -*- coding: utf-8 -*- #
# Copyright 2023 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.
"""Resets a Cloud SQL read replica size to its primary storage size."""


import http.client

from apitools.base.py import exceptions as apitools_exceptions
from googlecloudsdk.api_lib.sql import api_util
from googlecloudsdk.api_lib.sql import exceptions
from googlecloudsdk.api_lib.sql import operations
from googlecloudsdk.api_lib.sql import validate
from googlecloudsdk.calliope import base
from googlecloudsdk.calliope import exceptions as calliope_exceptions
from googlecloudsdk.command_lib.sql import flags
from googlecloudsdk.core import properties


# TODO(b/265881192): remove Hidden label once we are ready to launch.
@base.Hidden
@base.ReleaseTracks(base.ReleaseTrack.ALPHA)
class ResetReplicaSize(base.Command):
  """Resets a Cloud SQL read replica storage size to its primary storage size."""

  @staticmethod
  def Args(parser):
    """Args is called by calliope to gather arguments for this command.

    Args:
      parser: An argparse parser that you can use to add arguments that go on
        the command line after this command. Positional arguments are allowed.
    """
    base.ASYNC_FLAG.AddToParser(parser)
    parser.add_argument(
        'replica',
        completer=flags.InstanceCompleter,
        help='Cloud SQL read replica ID.',
    )

  def Run(self, args):
    """Resets a Cloud SQL read replica storage size to its primary storage size.

    Args:
      args: argparse.Namespace, The arguments with which this command was
        invoked.

    Returns:
      A dict object representing the operations resource describing the reset
      replica size operation if the reset was successful.

    Raises:
      HttpException: A http error response was received while executing an api
          request.
      ResourceNotFoundError: The SQL instance isn't found.
    """
    client = api_util.SqlClient(api_util.API_VERSION_DEFAULT)
    sql_client = client.sql_client
    sql_messages = client.sql_messages

    validate.ValidateInstanceName(args.replica)
    instance_ref = client.resource_parser.Parse(
        args.replica,
        params={'project': properties.VALUES.core.project.GetOrFail},
        collection='sql.instances',
    )

    try:
      request = sql_messages.SqlProjectsInstancesResetReplicaSizeRequest(
          project=instance_ref.project, instance=instance_ref.instance
      )

      result_operation = sql_client.projects_instances.ResetReplicaSize(request)

      operation_ref = client.resource_parser.Create(
          'sql.operations',
          operation=result_operation.name,
          project=instance_ref.project,
      )
      if args.async_:
        return {
            'Name': instance_ref.instance,
            'Project': instance_ref.project,
            'OperationId': result_operation.name,
            'Status': result_operation.status,
        }

      operations.OperationsV1Beta4.WaitForOperation(
          sql_client,
          operation_ref,
          'Resetting the Cloud SQL read replica size.',
      )

      changed_instance_resource = sql_client.instances.Get(
          sql_messages.SqlInstancesGetRequest(
              project=instance_ref.project, instance=instance_ref.instance
          )
      )

      return {
          'Name': instance_ref.instance,
          'Project': instance_ref.project,
          'StorageSizeGb': changed_instance_resource.settings.dataDiskSizeGb,
      }
    except apitools_exceptions.HttpError as error:
      if error.status_code == http.client.FORBIDDEN:
        raise exceptions.ResourceNotFoundError(
            "There's no instance found at {} or you're not authorized to "
            'access it.'.format(instance_ref.RelativeName()))
      raise calliope_exceptions.HttpException(error)
