class CheckGatewayHealthJob < ApplicationJob
  queue_as :default

  def perform
    # Mark gateways as offline if no heartbeat in last 2 minutes
    offline_count = Gateway.where("last_heartbeat_at < ?", 2.minutes.ago)
                          .where.not(status: "offline")
                          .update_all(status: "offline")

    if offline_count > 0
      Rails.logger.warn("Marked #{offline_count} gateways as offline due to missing heartbeat")
    end
  end
end