# -*- 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.
"""Command to list Composer workloads."""

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

from googlecloudsdk.api_lib.composer import environments_util as environments_api_util
from googlecloudsdk.api_lib.composer import environments_workloads_util as workloads_util
from googlecloudsdk.calliope import base
from googlecloudsdk.command_lib.composer import flags
from googlecloudsdk.command_lib.composer import image_versions_util as image_versions_command_util
from googlecloudsdk.command_lib.composer import resource_args
from googlecloudsdk.command_lib.composer import util as command_util

DETAILED_HELP = {'EXAMPLES': """\
      To display Composer workloads for the environment named ``environment-1'', run:
      $ {command} environment-1
    """}

COMPOSER3_IS_REQUIRED_MSG = """\
The operation is not supported for given environment. Composer version {composer_version} or greater is required.
"""


@base.DefaultUniverseOnly
class ListWorkloads(base.Command):
  """List Composer workloads, supported in Composer 3 environments or greater."""

  detailed_help = DETAILED_HELP

  @staticmethod
  def Args(parser):
    resource_args.AddEnvironmentResourceArg(
        parser, 'for which to display workloads'
    )

  def Run(self, args):
    env_ref = args.CONCEPTS.environment.Parse()
    release_track = self.ReleaseTrack()
    env_obj = environments_api_util.Get(
        env_ref, release_track=self.ReleaseTrack()
    )
    if not image_versions_command_util.IsVersionComposer3Compatible(
        image_version=env_obj.config.softwareConfig.imageVersion
    ):
      raise command_util.InvalidUserInputError(
          COMPOSER3_IS_REQUIRED_MSG.format(
              composer_version=flags.MIN_COMPOSER3_VERSION,
          )
      )

    workloads_service = workloads_util.EnvironmentsWorkloadsService(
        release_track
    )

    return workloads_service.List(
        env_ref,
    )