# frozen_string_literal: true

module PlainApm
  module Hooks
    class ActionPack < ActiveSupportSubscriber
      NOTIFICATION_PATTERN = /\A[^!]\w+\.action_controller\Z/.freeze

      private

      def notification_pattern
        NOTIFICATION_PATTERN
      end

      def payload(event)
        name, source = *event.name.split(".")
        payload = event.payload

        base = {
          "source" => source,
          "name" => name,
          "backtrace" => filtered_backtrace,
          "allocations" => event.allocations,
          "started_at" => event.time,
          "finished_at" => event.end,
          "trace_id" => trace_id
        }

        case name
        when "process_action"
          base.merge({
            "controller" => payload[:controller],
            "action" => payload[:action],
            "params" => payload[:params],
            "format" => payload[:format],
            "method" => payload[:method],
            "path" => payload[:path],
            "status" => payload[:status]
          })
        when "redirect_to", "start_processing", "halted_callback", "send_file", "send_data"
          nil
        when "read_fragment", "write_fragment", "exist_fragment?", "expire_fragment"
          # controller, action, key
          nil
        end
      end
    end
  end
end