class WebAuthn::CredentialCreationOptions

def configuration
  WebAuthn.configuration
end

def initialize(
  attestation: nil,
  authenticator_selection: nil,
  exclude_credentials: nil,
  extensions: nil,
  user_id:,
  user_name:,
  user_display_name: nil,
  rp_name: nil
)
  super()
  @attestation = attestation
  @authenticator_selection = authenticator_selection
  @exclude_credentials = exclude_credentials
  @extensions = extensions
  @user_id = user_id
  @user_name = user_name
  @user_display_name = user_display_name
  @rp_name = rp_name
end

def pub_key_cred_params
  configuration.algorithms.map do |alg_name|
    { type: "public-key", alg: COSE::Algorithm.by_name(alg_name).id }
  end
end

def rp
  @rp ||= CredentialRPEntity.new(name: rp_name || configuration.rp_name || DEFAULT_RP_NAME)
end

def to_h
  options = {
    challenge: challenge,
    pubKeyCredParams: pub_key_cred_params,
    timeout: timeout,
    user: { id: user.id, name: user.name, displayName: user.display_name },
    rp: { name: rp.name }
  }
  if attestation
    options[:attestation] = attestation
  end
  if authenticator_selection
    options[:authenticatorSelection] = authenticator_selection
  end
  if exclude_credentials
    options[:excludeCredentials] = exclude_credentials
  end
  if extensions
    options[:extensions] = extensions
  end
  options
end

def user
  @user ||= CredentialUserEntity.new(id: user_id, name: user_name, display_name: user_display_name)
end