# -*- coding: utf-8 -*- #
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#
# 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
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# Unless required by applicable law or agreed to in writing, software
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"""Command for adding or updating or patching partner metadata."""

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

from googlecloudsdk.api_lib.compute import base_classes
from googlecloudsdk.api_lib.compute import partner_metadata_utils
from googlecloudsdk.calliope import base
from googlecloudsdk.calliope import exceptions as calliope_exceptions
from googlecloudsdk.command_lib.compute.instances import flags


DETAILED_HELP = {
    'DESCRIPTION': """\
          {command} can be used to add or update or patch partner metadata of a
        virtual machine instance. Every instance has access to a
        metadata server that can be used to query partner metadata that has
        been set through this tool. For information on metadata, see link:https://cloud.google.com/compute/docs/metadata/overview[About VM metadata].

        Only namespaces keys that are provided are mutated. Existing
        Namespaces entries will remain unaffected.

        In order to retrieve partner metadata, run:

            $ gcloud compute instances describe example-instance --zone
            us-central1-a --view=FULL --format="value(partnerMetadata)"

        where example-instance is the name of the virtual machine instance
        you're querying partner metadata from.

        """,
    'EXAMPLES': """\
        To add partner metadata under namespace ``test.compute.googleapis.com''
        to instance ``TEST_INSTANCE'' run:

          $ {command} TEST_INSTANCE \\
          --partner-metadata=test.compute.googleapis.com/entries="{ \"engine\": { \"type\": V8 } }"

        To add partner metadata from a file:

          $ {command} TEST_INSTANCE \\
          --partner-metadata-from-file=examples/engine.json

        """,
}


@base.ReleaseTracks(base.ReleaseTrack.ALPHA, base.ReleaseTrack.BETA)
class InstancesAddPartnerMetadata(base.UpdateCommand):
  """Add or update partner metadata."""

  @staticmethod
  def Args(parser):
    flags.INSTANCE_ARG.AddArgument(
        parser, operation_type='set partner metadata on'
    )
    partner_metadata_utils.AddPartnerMetadataArgs(parser)

  def _MakePatchPartnerMetadataRequest(self, client, instance_ref, args):
    partner_metadata_dict = partner_metadata_utils.CreatePartnerMetadataDict(
        args
    )
    partner_metadata_utils.ValidatePartnerMetadata(partner_metadata_dict)
    partner_metadata_message = (
        partner_metadata_utils.ConvertPartnerMetadataDictToMessage(
            partner_metadata_dict,
            client.messages
        )
    )
    return (
        client.apitools_client.instances,
        'PatchPartnerMetadata',
        client.messages.ComputeInstancesPatchPartnerMetadataRequest(
            partnerMetadata=client.messages.PartnerMetadata(
                partnerMetadata=partner_metadata_message
            ),
            **instance_ref.AsDict()
        ),
    )

  def Run(self, args):
    if not args.partner_metadata and not args.partner_metadata_from_file:
      raise calliope_exceptions.OneOfArgumentsRequiredException(
          ['--partner-metadata', '--partner-metadata-from-file'],
          'At least one of [--partner-metadata] or'
          ' [--partner-metadata-from-file] must be provided.',
      )
    holder = base_classes.ComputeApiHolder(self.ReleaseTrack())
    client = holder.client
    instance_ref = flags.INSTANCE_ARG.ResolveAsResource(
        args,
        holder.resources,
        scope_lister=flags.GetInstanceZoneScopeLister(client),
    )
    patch_request = self._MakePatchPartnerMetadataRequest(
        client, instance_ref, args
    )
    return client.MakeRequests([patch_request])


InstancesAddPartnerMetadata.detailed_help = DETAILED_HELP