- release_tracks: [ALPHA, BETA, GA]
  help_text:
    brief: Update the TTL configuration of the given field.
    description: |
      Update the TTL configuration of the given field.

      This enables or disables using a field as the TTL field for its collection group or kind. Note
      that only one field can be the TTL field for a collection group.
    examples: |
      The following command sets the `expiry` field of the `Events` collection group (kind) to be
      the TTL field:

        $ {command} expiry \
            --collection-group=Events \
            --enable-ttl

      The following command disables the `expiry` field so it is no longer the TTL for the `Events`
      collection group (kind):

        $ {command} expiry \
            --collection-group=Events \
            --disable-ttl

  request:
    collection: firestore.projects.databases.collectionGroups.fields
    modify_request_hooks:
    - googlecloudsdk.command_lib.firestore.util:UpdateFieldRequestTtls

  output:
    format: yaml(name, ttlConfig)

  async:
    collection: firestore.projects.databases.operations
    api_version: v1

  update:
    read_modify_update: false

  arguments:
    resource:
      help_text: Field to update.
      # The field is strictly required for TTLs, so we use 'field'.
      spec: !REF googlecloudsdk.command_lib.firestore.resources:field

    params:
    # Define --enable-ttl and --disable-ttl as an arg group, required and mutually exclusive.
    - group:
        required: true
        mutex: true
        params:
        - help_text: Set to enable this field as the TTL for its collection group.
          arg_name: "enable-ttl"
          action: store_true
          type: bool
        - help_text: Set to make this field no longer the TTL for its collection group.
          arg_name: "disable-ttl"
          action: store_true
          type: bool