# frozen_string_literal: true

module ElasticAPM
  module Metadata
    # @api private
    class ServiceInfo
      def initialize(config)
        @config = config
      end

      # rubocop:disable Metrics/MethodLength
      def build
        base = {
          name: @config.service_name,
          environment: @config.environment,
          agent: {
            name: 'ruby',
            version: VERSION
          },
          framework: nil,
          language: {
            name: 'ruby',
            version: RUBY_VERSION
          },
          runtime: runtime,
          version: @config.service_version || Util.git_sha
        }

        if @config.framework_name
          base[:framework] = {
            name: @config.framework_name,
            version: @config.framework_version
          }
        end

        base
      end
      # rubocop:enable Metrics/MethodLength

      def self.build(config)
        new(config).build
      end

      private

      def runtime
        case RUBY_ENGINE
        when 'ruby'
          { name: RUBY_ENGINE, version: RUBY_VERSION || RUBY_ENGINE_VERSION }
        when 'jruby'
          { name: RUBY_ENGINE, version: JRUBY_VERSION || RUBY_ENGINE_VERSION }
        end
      end
    end
  end
end