# Copyright 2016 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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"""The configs waiters wait command."""

from googlecloudsdk.api_lib.runtime_config import util
from googlecloudsdk.calliope import arg_parsers
from googlecloudsdk.calliope import base
from googlecloudsdk.command_lib.runtime_config import flags


class Wait(base.Command):
  """Wait for a waiter to end in success or failure.

  This command waits for a waiter to end in success or failure.
  """

  detailed_help = {
      'EXAMPLES': """\
          To wait for a waiter named "my-waiter" within a configuration named
          "my-config", run:

            $ {command} my-waiter --config-name my-config
          """,
  }

  @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.
    """
    flags.AddRequiredConfigFlag(parser)

    parser.add_argument(
        '--max-wait',
        type=arg_parsers.Duration(lower_bound='1s',
                                  upper_bound='{0}s'.format(
                                      util.MAX_WAITER_TIMEOUT)),
        help="""\
        The maximum amount of time to wait for a waiter to finish.
        Timeout values can be specified as seconds, minutes, or hours, using the
        's', 'm', and 'h' suffixes respectively. If no suffix is specified, the
        unit is assumed to be seconds.
        """)

    parser.add_argument('name', help='The waiter name.')

  def Run(self, args):
    """Run 'runtime-configs waiters wait'.

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

    Returns:
      The requested waiter, after waiting for it to succeed or fail.

    Raises:
      HttpException: An http error response was received while executing api
          request.
      OperationTimeoutError: If the waiter doesn't complete in time.
    """
    waiter_resource = util.ParseWaiterName(args.name, args)
    result = util.WaitForWaiter(waiter_resource, max_wait=args.max_wait)
    if util.IsFailedWaiter(result):
      self.exit_code = 2  # exit with code 2 if the result waiter failed.
    return util.FormatWaiter(result)
