# -*- coding: utf-8 -*- #
# Copyright 2018 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.
"""Gather stage/condition information for any important objects here."""

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

from googlecloudsdk.core.console import progress_tracker

READY = 'Ready'
SERVICE_IAM_POLICY_SET = 'IamPolicySet'
SERVICE_IAP_ENABLE = 'IapEnable'
SERVICE_ROUTES_READY = 'RoutesReady'
SERVICE_CONFIGURATIONS_READY = 'ConfigurationsReady'
MULTI_REGION_READY_PREFIX = 'MultiRegionReady/'
BUILD_READY = 'BuildReady'
UPLOAD_SOURCE = 'UploadSource'
CREATE_REPO = 'CreateRepo'
VALIDATE_SERVICE = 'ValidateService'

_RESOURCES_AVAILABLE = 'ResourcesAvailable'
_STARTED = 'Started'
_COMPLETED = 'Completed'


def _CreateRepoStage():
  return progress_tracker.Stage(
      'Creating Container Repository...', key=CREATE_REPO
  )


def _ValidateServiceStage():
  return progress_tracker.Stage('Validating Service...', key=VALIDATE_SERVICE)


def _UploadSourceStage():
  return progress_tracker.Stage('Uploading sources...', key=UPLOAD_SOURCE)


def _BuildContainerStage():
  return progress_tracker.Stage('Building Container...', key=BUILD_READY)


def _NewRoutingTrafficStage():
  return progress_tracker.Stage('Routing traffic...', key=SERVICE_ROUTES_READY)


# TODO(b/322180968): Once Worker API is ready, replace 'key' to Worker specific
# condition.
def _NewSplittingInstanceStage():
  return progress_tracker.Stage(
      'Splitting instances...', key=SERVICE_ROUTES_READY
  )


def UpdateTrafficStages():
  return [_NewRoutingTrafficStage()]


def UpdateInstanceSplitStages():
  return [_NewSplittingInstanceStage()]


# Because some terminals cannot update multiple lines of output simultaneously,
# the order of conditions in this dictionary should match the order in which we
# expect cloud run resources to complete deployment.
def ServiceStages(
    include_iam_policy_set=False,
    include_route=True,
    include_validate_service=False,
    include_upload_source=False,
    include_build=False,
    include_create_repo=False,
    include_create_revision=True,
    include_iap=False,
    regions_list=None,
):
  """Return the progress tracker Stages for conditions of a Service."""
  stages = []
  if include_create_repo:
    stages.append(_CreateRepoStage())
  if include_validate_service:
    stages.append(_ValidateServiceStage())
  if include_upload_source:
    stages.append(_UploadSourceStage())
  if include_build:
    stages.append(_BuildContainerStage())
  if include_create_revision:
    if not regions_list:
      stages.append(
          progress_tracker.Stage(
              'Creating Revision...', key=SERVICE_CONFIGURATIONS_READY
          )
      )
    else:
      for region in regions_list:
        stages.append(
            progress_tracker.Stage(
                'Creating Revision in region: ' + region,
                key=MULTI_REGION_READY_PREFIX + region,
            )
        )
  if include_route and not regions_list:
    stages.append(_NewRoutingTrafficStage())
  if include_iam_policy_set:
    stages.append(
        progress_tracker.Stage(
            'Setting IAM Policy...', key=SERVICE_IAM_POLICY_SET
        )
    )
  if include_iap:
    stages.append(
        progress_tracker.Stage(
            'Setting IAP service agent...', key=SERVICE_IAP_ENABLE
        )
    )
  return stages


def ServiceDependencies(regions_list):
  """Dependencies for the Service resource, for passing to ConditionPoller."""
  if regions_list:
    return {
        MULTI_REGION_READY_PREFIX + region: {SERVICE_CONFIGURATIONS_READY}
        for region in regions_list
    }
  return {SERVICE_ROUTES_READY: {SERVICE_CONFIGURATIONS_READY}}


def JobStages(
    execute_now=False,
    include_completion=False,
    include_build=False,
    include_create_repo=False,
):
  """Returns the list of progress tracker Stages for Jobs."""
  stages = []
  if include_create_repo:
    stages.append(_CreateRepoStage())
  if include_build:
    stages.append(_UploadSourceStage())
    stages.append(_BuildContainerStage())
  if execute_now:
    stages += ExecutionStages(include_completion)
  return stages


def ExecutionStages(include_completion=False):
  """Returns the list of progress tracker Stages for Executions."""
  stages = [
      progress_tracker.Stage(
          'Provisioning resources...', key=_RESOURCES_AVAILABLE
      )
  ]
  if include_completion:
    stages.append(progress_tracker.Stage('Starting execution...', key=_STARTED))
    # Normally the last terminal condition (e.g. Ready or in this case
    # Completed) wouldn't be included as a stage since it gates the entire
    # progress tracker. But in this case we want to include it so we can show
    # updates on this stage while the job is running.
    stages.append(
        progress_tracker.Stage('Running execution...', key=_COMPLETED)
    )
  return stages


def ExecutionDependencies():
  return {_STARTED: {_RESOURCES_AVAILABLE}, _COMPLETED: {_STARTED}}


def WorkerPoolStages(
    include_build=False,
    include_create_repo=False,
    include_create_revision=True,
):
  """Return the progress tracker Stages for conditions of a Worker Pool."""
  stages = []
  if include_create_repo:
    stages.append(_CreateRepoStage())
  if include_build:
    stages.append(_UploadSourceStage())
    stages.append(_BuildContainerStage())
  if include_create_revision:
    stages.append(progress_tracker.Stage('Creating Revision...', key=READY))
  return stages