require 'real_page/utils'

module RealPage
  module Utils
    class ConfigurationValidator
      REQUIRED_KEYS = %i[username password license_key web_service_url].freeze
      private_constant :REQUIRED_KEYS

      def validate!
        missing_keys = REQUIRED_KEYS.select do |key|
          RealPage.config.send(key).nil?
        end
        unless missing_keys.empty?
          raise Error::InvalidConfiguration,
                "Missing configuration for #{missing_keys.join(', ')}"
        end
      end
    end
  end
end