# encoding: utf-8
# This file is distributed under New Relic's license terms.
# See https://github.com/newrelic/rpm/blob/master/LICENSE for complete details.

module NewRelic
  module Agent
    module Datastores
      module Mongo
        module Obfuscator

          WHITELIST = [:operation].freeze

          def self.obfuscate_statement(source, whitelist = WHITELIST)
            if source.is_a? Hash
              obfuscated = {}
              source.each do |key, value|
                if whitelist.include?(key)
                  obfuscated[key] = value
                else
                  obfuscated[key] = obfuscate_value(value, whitelist)
                end
              end
              obfuscated
            else
              obfuscate_value(source, whitelist)
            end
          end

          QUESTION_MARK = '?'.freeze

          def self.obfuscate_value(value, whitelist = WHITELIST)
            if value.is_a?(Hash)
              obfuscate_statement(value, whitelist)
            elsif value.is_a?(Array)
              value.map {|v| obfuscate_value(v, whitelist)}
            else
              QUESTION_MARK
            end
          end
        end
      end
    end
  end
end