module RCM
  class ServiceManager
    SYS_SERVICE_MGR = '/usr/sbin/service'.freeze
    def initialize(logger)
      @logger = logger
    end

    def dependencies_changed?(service)
      service.depends_file.values.each do |f|
        if f.changed
          @logger.debug("Dependencies for service '#{service.name}' changed because #{f.path} changed.")
          return true
        end
      end

      service.depends_package.values.each do |p|
        if p.changed
          @logger.debug("Dependencies for service '#{service.name}' changed because #{p.name} changed.")
          return true
        end
      end

      @logger.info("Dependencies for service '#{service.name}' have not changed.")
      false
    end

    def restart(service)
      @logger.debug("Restarting #{service.name}")
      status = ::RCM.cmd("#{SYS_SERVICE_MGR} #{service.name} restart")
      error_msg = "Failed to restart #{service.name}.\n\nstderr:\n#{status.error}\n\nstdout:\n#{status.output}"
      @logger.fatal(error_msg)
    end
  end
end