require 'g5_authenticatable_api/token_validator'

module G5AuthenticatableApi
  module Helpers
    module Grape
      def authenticate_user!
        raise_auth_error if !(warden.try(:authenticated?) || token_validator.valid?)
      end

      def warden
        env['warden']
      end

      private
      def token_validator
        request = Rack::Request.new(env)
        @token_validator ||= TokenValidator.new(request.params, headers)
      end

      def raise_auth_error
        throw :error, message: 'Unauthorized',
                      status: 401,
                      headers: {'WWW-Authenticate' => token_validator.auth_response_header}
      end
    end
  end
end