DotNetWorkQueue.ASendJobToQueue.ProcessResult C# (CSharp) Method

        private IJobQueueOutputMessage ProcessResult(IScheduledJob job, DateTimeOffset scheduledTime, IQueueOutputMessage result)
        {
            //no errors, so just return
            if (!result.HasError) return new JobQueueOutputMessage(result, JobQueuedStatus.Success);

            //this is not an error for the job already existing in the queue
            if (!JobAlreadyExistsError(result.SendingException))
                return new JobQueueOutputMessage(result, JobQueuedStatus.Failed);

            var status = DoesJobExist(job.Name, scheduledTime);
            switch (status)
            {
                case QueueStatuses.Processing:
                    return new JobQueueOutputMessage(result, JobQueuedStatus.AlreadyQueuedProcessing);
                case QueueStatuses.Waiting:
                    return new JobQueueOutputMessage(result, JobQueuedStatus.AlreadyQueuedWaiting);
                case QueueStatuses.Processed:
                    return new JobQueueOutputMessage(result, JobQueuedStatus.AlreadyProcessed);
                case QueueStatuses.Error:
                    DeleteJob(job.Name);
                    return null;
                default:
                    return null; //try to re-queue once; if this is second try and this happens agian, an error will be returned
            }
        }