class Rufus::Scheduler::Job

def initialize (scheduler, t, params, &block)
  @scheduler = scheduler
  @t = t
  @params = params
  @block = block || params[:schedulable]
  raise ArgumentError.new(
    'no block or :schedulable passed, nothing to schedule'
  ) unless @block
  @params[:tags] = Array(@params[:tags])
  @job_id = params[:job_id] || "#{self.class.name}_#{self.object_id.to_s}"
  determine_at
end

def schedule_info
  @t
end

def tags
  @params[:tags]
end

def tags= (tags)
  @params[:tags] = Array(tags)
end

def trigger (t=Time.now)
  @last = t
  job_thread = nil
  to_job = nil
  @scheduler.send(:trigger_job, @params[:blocking]) do
    #
    # Note that #trigger_job is protected, hence the #send
    # (Only jobs know about this method of the scheduler)
    job_thread = Thread.current
    @last_job_thread = job_thread
    begin
      trigger_block
      job_thread = nil
      to_job.unschedule if to_job
    rescue Exception => e
      @scheduler.handle_exception(self, e)
    end
  end
  # note that add_job and add_cron_job ensured that :blocking is
  # not used along :timeout
  if to = @params[:timeout]
    to_job = @scheduler.in(to, :parent => self, :tags => 'timeout') do
      # at this point, @job_thread might be set
      if job_thread && job_thread.alive?
        job_thread.raise(Rufus::Scheduler::TimeOutError)
      end
    end
  end
end

def trigger_block
  @block.respond_to?(:call) ?
    @block.call(self) : @block.trigger(@params.merge(:job => self))
end

def unschedule
  @scheduler.unschedule(self.job_id)
end