module Scrivito
  class LogSubscriber < ActiveSupport::LogSubscriber
    def self.runtime=(value)
      Thread.current["scrivito_cms_load_runtime"] = value
    end

    def self.runtime
      Thread.current["scrivito_cms_load_runtime"] ||= 0
    end

    def self.reset_runtime
      rt, self.runtime = runtime, 0
      rt
    end

    def cms_load(event)
      self.class.runtime += event.duration
      return unless logger.debug?

      name = '%s (%.1fms)' % [event.payload[:name], event.duration]
      debug "  #{name}  #{event.payload[:index]} #{event.payload[:keys].inspect}"
    end

    def logger
      Rails.logger
    end
  end
end