# -*- coding: utf-8 -*- #
# Copyright 2022 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.
"""Deploy a container to Cloud Run that will run to completion."""

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

import enum
import os.path

from googlecloudsdk.api_lib.run import api_enabler
from googlecloudsdk.calliope import base
from googlecloudsdk.calliope import exceptions as c_exceptions
from googlecloudsdk.command_lib.artifacts import docker_util
from googlecloudsdk.command_lib.run import artifact_registry
from googlecloudsdk.command_lib.run import config_changes
from googlecloudsdk.command_lib.run import connection_context
from googlecloudsdk.command_lib.run import container_parser
from googlecloudsdk.command_lib.run import exceptions
from googlecloudsdk.command_lib.run import flags
from googlecloudsdk.command_lib.run import messages_util
from googlecloudsdk.command_lib.run import pretty_print
from googlecloudsdk.command_lib.run import resource_args
from googlecloudsdk.command_lib.run import serverless_operations
from googlecloudsdk.command_lib.run import stages
from googlecloudsdk.command_lib.util.concepts import concept_parsers
from googlecloudsdk.command_lib.util.concepts import presentation_specs
from googlecloudsdk.core import log
from googlecloudsdk.core import properties
from googlecloudsdk.core.console import console_io
from googlecloudsdk.core.console import progress_tracker


class BuildType(enum.Enum):
  DOCKERFILE = 'Dockerfile'
  BUILDPACKS = 'Buildpacks'


def ContainerArgGroup(release_track=base.ReleaseTrack.GA):
  """Returns an argument group with all per-container deploy args."""

  help_text = """
Container Flags

  If the --container or --remove-containers flag is specified the following
  arguments may only be specified after a --container flag.
"""
  group = base.ArgumentGroup(help=help_text)
  group.AddArgument(
      flags.SourceAndImageFlags(
          image='us-docker.pkg.dev/cloudrun/container/job:latest',
          release_track=release_track,
      )
  )
  group.AddArgument(flags.MutexEnvVarsFlags(release_track=release_track))
  group.AddArgument(flags.MemoryFlag())
  group.AddArgument(flags.CpuFlag())
  group.AddArgument(flags.GpuFlag())
  group.AddArgument(flags.ArgsFlag())
  group.AddArgument(flags.SecretsFlags())
  group.AddArgument(flags.CommandFlag())
  group.AddArgument(flags.DependsOnFlag())
  group.AddArgument(flags.AddVolumeMountFlag())
  group.AddArgument(flags.RemoveVolumeMountFlag())
  group.AddArgument(flags.ClearVolumeMountsFlag())
  group.AddArgument(flags.StartupProbeFlag())

  return group


@base.UniverseCompatible
@base.ReleaseTracks(base.ReleaseTrack.GA)
class Deploy(base.Command):
  """Create or update a Cloud Run job."""

  detailed_help = {
      'DESCRIPTION': """\
          Creates or updates a Cloud Run job.
          """,
      'EXAMPLES': """\
          To deploy a new job `my-data-transformation` to Cloud Run:

              $ {command} my-data-transformation --image=us-docker.pkg.dev/project/image

          You may also omit the job name. Then a prompt will be displayed
          with a suggested default value:

              $ {command} --image=us-docker.pkg.dev/project/image
          """,
  }

  @classmethod
  def CommonArgs(cls, parser):
    job_presentation = presentation_specs.ResourcePresentationSpec(
        'JOB',
        resource_args.GetJobResourceSpec(prompt=True),
        'Job to deploy.',
        required=True,
        prefixes=False,
    )
    flags.AddLabelsFlag(parser)
    flags.AddParallelismFlag(parser)
    flags.AddTasksFlag(parser)
    flags.AddMaxRetriesFlag(parser)
    flags.AddTaskTimeoutFlags(parser)
    flags.AddServiceAccountFlag(parser)
    flags.AddSetCloudSQLFlag(parser)
    flags.AddVpcConnectorArg(parser)
    flags.AddVpcNetworkGroupFlagsForUpdate(parser, resource_kind='job')
    flags.AddEgressSettingsFlag(parser)
    flags.AddClientNameAndVersionFlags(parser)
    flags.AddBinAuthzPolicyFlags(parser, with_clear=False)
    flags.AddBinAuthzBreakglassFlag(parser)
    flags.AddCmekKeyFlag(parser, with_clear=False)
    flags.AddSandboxArg(parser, hidden=True)
    flags.AddGeneralAnnotationFlags(parser)
    flags.AddVolumesFlags(parser, cls.ReleaseTrack())
    flags.AddGpuTypeFlag(parser)
    flags.GpuZonalRedundancyFlag(parser)

    polling_group = parser.add_mutually_exclusive_group()
    flags.AddAsyncFlag(polling_group)

    execute_group = polling_group.add_argument_group(
        help='--async cannot be used if executing the job after the update.')
    flags.AddWaitForCompletionFlag(execute_group, implies_execute_now=True)

    flags.AddExecuteNowFlag(execute_group)

    concept_parsers.ConceptParser([job_presentation]).AddToParser(parser)
    # No output by default, can be overridden by --format
    parser.display_info.AddFormat('none')

  @staticmethod
  def Args(parser):
    Deploy.CommonArgs(parser)
    container_args = ContainerArgGroup()
    container_parser.AddContainerFlags(parser, container_args)
    flags.RemoveContainersFlag().AddToParser(parser)

  def Run(self, args):
    """Deploy a Job to Cloud Run."""
    if flags.FlagIsExplicitlySet(args, 'containers'):
      containers = args.containers
    else:
      containers = {'': args}

    if len(containers) > 10:
      raise c_exceptions.InvalidArgumentException(
          '--container', 'Jobs may include at most 10 containers'
      )

    build_from_source = {
        name: container
        for name, container in containers.items()
        if not container.IsSpecified('image')
    }
    if len(build_from_source) > 1:
      needs_image = [
          name
          for name, container in build_from_source.items()
          if not flags.FlagIsExplicitlySet(container, 'source')
      ]
      if needs_image:
        raise exceptions.RequiredImageArgumentException(needs_image)
      raise c_exceptions.InvalidArgumentException(
          '--container', 'At most one container can be deployed from source.'
      )

    for name, container in build_from_source.items():
      if not flags.FlagIsExplicitlySet(container, 'source'):
        if console_io.CanPrompt():
          container.source = flags.PromptForDefaultSource(name)
        else:
          if name:
            message = (
                'Container {} requires a container image to deploy (e.g.'
                ' `us-docker.pkg.dev/cloudrun/container/job:latest`) if no'
                '  build source is provided.'.format(name)
            )
          else:
            message = (
                'Requires a container image to deploy (e.g.'
                ' `us-docker.pkg.dev/cloudrun/container/job:latest`) if no'
                '  build source is provided.'
            )
          raise c_exceptions.RequiredArgumentException(
              '--image',
              message,
          )

    required_apis = [api_enabler.get_run_api()]
    if build_from_source:
      required_apis.append('artifactregistry.googleapis.com')
      required_apis.append('cloudbuild.googleapis.com')
    already_activated_services = api_enabler.check_and_enable_apis(
        properties.VALUES.core.project.Get(), required_apis
    )
    job_ref = args.CONCEPTS.job.Parse()
    flags.ValidateResource(job_ref)

    conn_context = connection_context.GetConnectionContext(
        args, flags.Product.RUN, self.ReleaseTrack()
    )

    image = None
    pack = None
    source = None
    operation_message = 'Deploying container to'
    repo_to_create = None
    # Build an image from source if source specified
    if build_from_source:
      # Only one container can deployed from source
      container = next(iter(build_from_source.values()))
      source = container.source

      ar_repo = docker_util.DockerRepo(
          project_id=properties.VALUES.core.project.Get(required=True),
          location_id=artifact_registry.RepoRegion(args),
          repo_id='cloud-run-source-deploy',
      )
      if artifact_registry.ShouldCreateRepository(
          ar_repo, skip_activation_prompt=already_activated_services
      ):
        repo_to_create = ar_repo
      # The image is built with latest tag. After build, the image digest
      # from the build result will be added to the image of the job spec.
      container.image = '{repo}/{job}'.format(
          repo=ar_repo.GetDockerString(), job=job_ref.jobsId
      )
      # Use GCP Buildpacks if Dockerfile doesn't exist
      docker_file = source + '/Dockerfile'
      if os.path.exists(docker_file):
        build_type = BuildType.DOCKERFILE
      else:
        pack = [{'image': container.image}]
        if self.ReleaseTrack() is base.ReleaseTrack.ALPHA:
          command_arg = getattr(container, 'command', None)
          if command_arg is not None:
            command = ' '.join(command_arg)
            pack[0].update(
                {'env': 'GOOGLE_ENTRYPOINT="{command}"'.format(command=command)}
            )
        build_type = BuildType.BUILDPACKS
      image = None if pack else container.image
      operation_message = (
          'Building using {build_type} and deploying container to'
      ).format(build_type=build_type.value)
      pretty_print.Info(
          messages_util.GetBuildEquivalentForSourceRunMessage(
              job_ref.jobsId, pack, source, subgroup='jobs '
          )
      )

    changes = flags.GetJobConfigurationChanges(
        args,
        release_track=self.ReleaseTrack())
    changes.append(
        config_changes.SetLaunchStageAnnotationChange(self.ReleaseTrack())
    )

    execute_now = args.execute_now or args.wait

    with serverless_operations.Connect(conn_context) as operations:
      job_obj = operations.GetJob(job_ref)
      messages_util.MaybeLogDefaultGpuTypeMessage(args, job_obj)
      pretty_print.Info(
          messages_util.GetStartDeployMessage(
              conn_context, job_ref, operation_message, 'job'
          )
      )
      operation = 'Creating' if job_obj is None else 'Updating'
      if build_from_source and execute_now:
        header_msg = 'Building, {} and running job...'.format(operation.lower())
      elif build_from_source:
        header_msg = 'Building and {} job...'.format(operation.lower())
      elif execute_now:
        header_msg = '{} and running job...'.format(operation)
      else:
        header_msg = '{} job...'.format(operation)

      def _DeployJob(changes_):
        with progress_tracker.StagedProgressTracker(
            header_msg,
            stages.JobStages(
                execute_now=execute_now,
                include_completion=args.wait,
                include_build=bool(build_from_source),
                include_create_repo=repo_to_create is not None,
            ),
            failure_message='Job failed to deploy',
            suppress_output=args.async_,
        ) as tracker:
          job_ = operations.DeployJob(
              job_ref,
              changes_,
              self.ReleaseTrack(),
              tracker,
              asyn=(args.async_ and not execute_now),
              build_image=image,
              build_pack=pack,
              build_source=source,
              repo_to_create=repo_to_create,
              prefetch=job_obj,
              already_activated_services=already_activated_services,
          )
          execution_ = None
          if execute_now:
            execution_ = operations.RunJob(
                job_ref, tracker, args.wait, args.async_, self.ReleaseTrack()
            )
          return job_, execution_

      try:
        job, execution = _DeployJob(changes)
      except exceptions.HttpError as e:
        if flags.ShouldRetryNoZonalRedundancy(args, str(e)):
          changes.append(
              config_changes.GpuZonalRedundancyChange(
                  gpu_zonal_redundancy=False
              )
          )
          job, execution = _DeployJob(changes)
        else:
          raise e

      if args.async_ and not execute_now:
        pretty_print.Success(
            'Job [{{bold}}{job}{{reset}}] is being deployed '
            'asynchronously.'.format(job=job.name)
        )
      else:
        operation = 'been deployed'
        if args.wait:
          operation += ' and completed execution [{}]'.format(execution.name)
        elif execute_now:
          operation += ' and started running execution [{}]'.format(
              execution.name
          )

        pretty_print.Success(
            'Job [{{bold}}{job}{{reset}}] has successfully {operation}.'.format(
                job=job.name, operation=operation
            )
        )

      msg = ''
      if execute_now:
        msg += messages_util.GetExecutionCreatedMessage(
            self.ReleaseTrack(), execution
        )
        msg += '\n'
      msg += messages_util.GetRunJobMessage(
          self.ReleaseTrack(), job.name, repeat=execute_now
      )
      log.status.Print(msg)
      return job


@base.ReleaseTracks(base.ReleaseTrack.BETA)
class BetaDeploy(Deploy):
  """Create or update a Cloud Run job."""

  @classmethod
  def Args(cls, parser):
    cls.CommonArgs(parser)
    container_args = ContainerArgGroup(release_track=base.ReleaseTrack.BETA)
    container_parser.AddContainerFlags(
        parser, container_args, cls.ReleaseTrack()
    )
    flags.RemoveContainersFlag().AddToParser(parser)


@base.ReleaseTracks(base.ReleaseTrack.ALPHA)
class AlphaDeploy(BetaDeploy):
  """Create or update a Cloud Run job."""

  @classmethod
  def Args(cls, parser):
    cls.CommonArgs(parser)
    container_args = ContainerArgGroup(release_track=base.ReleaseTrack.ALPHA)
    container_parser.AddContainerFlags(
        parser, container_args, cls.ReleaseTrack()
    )
    flags.RemoveContainersFlag().AddToParser(parser)
    flags.AddRuntimeFlag(parser)
    flags.AddPriorityFlag(parser)
    flags.AddDelayExecutionFlag(parser)