defmodule Webauthn do
  @moduledoc false
  @auth_challenge Application.compile_env(
                    :webauthn,
                    :auth_challenge,
                    Webauthn.Authentication.Challenge
                  )
  @auth_response Application.compile_env(
                   :webauthn,
                   :auth_response,
                   Webauthn.Authentication.Response
                 )
  @reg_challenge Application.compile_env(
                   :webauthn,
                   :registration_challenge,
                   Webauthn.Registration.Challenge
                 )
  @reg_response Application.compile_env(
                  :webauthn,
                  :registration_response,
                  Webauthn.Registration.Response
                )

  def challenge do
    Base.url_encode64(:crypto.strong_rand_bytes(32), padding: false)
  end

  def auth_challenge(challenge, options) do
    @auth_challenge.generate(challenge, options)
  end

  def auth_response(request, params) do
    @auth_response.verify(request, params)
  end

  def registration_challenge(challenge, options) do
    @reg_challenge.generate(challenge, options)
  end

  def registration_response(request, att_obj, json) do
    @reg_response.verify(request, att_obj, json)
  end
end