## This Source Code Form is subject to the terms of the Mozilla Public
## License, v. 2.0. If a copy of the MPL was not distributed with this
## file, You can obtain one at https://mozilla.org/MPL/2.0/.
##
## Copyright (c) 2007-2020 VMware, Inc. or its affiliates.  All rights reserved.

defmodule RabbitMQ.CLI.Ctl.Commands.SetGlobalParameterCommand do
  alias RabbitMQ.CLI.Core.{DocGuide, Helpers}

  @behaviour RabbitMQ.CLI.CommandBehaviour

  use RabbitMQ.CLI.Core.MergesNoDefaults

  def validate(args, _) when length(args) < 2 do
    {:validation_failure, :not_enough_args}
  end
  def validate(args, _) when length(args) > 2 do
    {:validation_failure, :too_many_args}
  end
  def validate(_, _), do: :ok

  use RabbitMQ.CLI.Core.RequiresRabbitAppRunning

  def run([name, value], %{node: node_name}) do
    :rabbit_misc.rpc_call(
      node_name,
      :rabbit_runtime_parameters,
      :parse_set_global,
      [name, value, Helpers.cli_acting_user()]
    )
  end

  use RabbitMQ.CLI.DefaultOutput

  def usage, do: "set_global_parameter <name> <value>"

  def usage_additional() do
    [
      ["<name>", "global parameter name (identifier)"],
      ["<value>", "parameter value"]
    ]
  end

  def usage_doc_guides() do
    [
      DocGuide.parameters()
    ]
  end

  def help_section(), do: :parameters

  def description(), do: "Sets a runtime parameter."

  def banner([name, value], _) do
    "Setting global runtime parameter \"#{name}\" to \"#{value}\" ..."
  end
end
