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

require 'contrast/components/logger'
require 'contrast/components/scope'
require 'contrast/agent/reporting/reporting_events/application_update'

module Contrast
  module Agent
    # this module handles one time static analysis tasks
    class StaticAnalysis
      include Singleton
      include Contrast::Components::Scope::InstanceMethods
      extend Contrast::Components::Logger::InstanceMethods

      class << self
        # After the first request is complete, we do a one-time manual catchup to review and report the already-loaded
        # gems.
        def catchup
          @_catchup ||= begin
            threaded_analysis!
            true
          end
        end

        def send_inventory_message
          return unless ::Contrast::INVENTORY.enable

          report = Contrast::Agent::Reporting::ApplicationUpdate.new
          # This convert here is left as it'll be easier to be replaced when the Library is being changed
          report.libraries = Contrast::Agent::Inventory::DependencyAnalysis.instance.library_pb_list
          Contrast::Agent::Inventory::DatabaseConfig.append_db_config(report)
          [report, Contrast::Agent::Reporting::ApplicationInventory.new].each do |e|
            Contrast::Agent.reporter.send_event(e)
          end
        end

        private

        def threaded_analysis!
          Contrast::Agent::Thread.new do
            Contrast::Agent::Inventory::DependencyUsageAnalysis.instance.catchup
            send_inventory_message
          rescue StandardError => e
            logger.warn('Unable to run post-initialization static analysis', e)
          end
        end
      end
    end
  end
end