defmodule Bolt.Sips.BoltProtocol.Message.Shared.AuthHelper do
  def get_auth_params(fields) do
    %{
      scheme: "basic",
      principal: fields[:auth][:username],
      credentials: fields[:auth][:password]
    }
  end

  def get_user_agent(fields) do
    default_user_agent = "BoltSips/" <> to_string(Application.spec(:bolt_sips, :vsn))
    Keyword.get(fields, :user_agent, default_user_agent)
  end

  def get_user_agent(_bolt_version, fields) do
    default_user_agent = "BoltSips/" <> to_string(Application.spec(:bolt_sips, :vsn))
    user_agent = Keyword.get(fields, :user_agent, default_user_agent)
    %{user_agent: user_agent}
  end

  def get_bolt_agent(fields) do
    system_info = System.build_info
    default_product = "BoltSips/" <> to_string(Application.spec(:bolt_sips, :vsn))
    product = Keyword.get(fields, :bolt_agent, []) |> Keyword.get(:product, default_product)
    %{bolt_agent: %{
      product: product,
      language: "Elixir/" <> system_info.version,
      language_details: system_info.build,
    }}
  end
end