# Copyright (c) 2022 Contrast Security, Inc. See https://www.contrastsecurity.com/enduser-terms-0317a for more details.
# frozen_string_literal: true

require 'contrast/config/logger_configuration'

module Contrast
  module Config
    # Common Configuration settings. Those in this section pertain to the
    # communication between the Agent & the Service.
    class ServiceConfiguration < BaseConfiguration
      # We don't set these b/c we've been asked to handle the default values of
      # these settings differently, logging when we have to use them.
      DEFAULT_HOST       = '127.0.0.1'
      DEFAULT_PORT       = '30555'

      attr_writer :enable, :logger, :bypass
      # @return [String, nil]
      attr_accessor :socket
      # @return [String, nil]
      attr_accessor :port
      # @return [String, nil]
      attr_accessor :host

      def initialize hsh = {}
        @enable = traverse_config(hsh, :enable)
        @host = traverse_config(hsh, :host)
        @port = traverse_config(hsh, :port)
        @socket = traverse_config(hsh, :socket)
        @logger = Contrast::Config::LoggerConfiguration.new(traverse_config(hsh, :logger))
        @bypass = traverse_config(hsh, :bypass)
        @configuration_map = {}
        build_configuration_map
      end

      # @return [Boolean, false]
      def enable
        !!@enable
      end

      # @return [Contrast::Config::LoggerConfiguration]
      def logger
        @logger ||= Contrast::Config::LoggerConfiguration.new
      end

      # @return [Boolean, false]
      def bypass
        !!@bypass
      end

      # TODO: RUBY-1493 MOVE TO BASE CONFIG

      def []= key, value
        instance_variable_set("@#{ key }".to_sym, value)
        @configuration_map[key] = value
      end

      def [] key
        send(key.to_sym)
      end

      # Traverse the given entity to build out the configuration graph.
      #
      # The values will be either a hash, indicating internal nodes to
      # traverse, or a value to set or the EMPTY_VALUE symbol, indicating a
      # leaf node.
      #
      # The spec_key are the Contrast defined keys based on the instance variables of
      # a given configuration.
      def traverse_config values, spec_key
        internal_nodes = values.cs__respond_to?(:has_key?)
        val = internal_nodes ? value_from_key_config(spec_key, values) : nil
        val == EMPTY_VALUE ? nil : val
      end

      def build_configuration_map
        instance_variables.each do |key|
          str_key = key.to_s.tr('@', '')
          next if str_key == 'configuration_map'

          @configuration_map[str_key] = send(str_key.to_sym)
        end
      end
    end
  end
end