Some refinements

src/ResqueManager.php

@@ -1,7 +1,8 @@
 <?php
 namespace Hlgrrnhrdt\Resque;
 
-use Resque as PhpResque;
+use Resque;
+use RuntimeException;
 
 /**
  * Resque
@@ -15,19 +16,73 @@ class ResqueManager
      */
     private $resque;
 
-    public function __construct(PhpResque $resque)
+    public function __construct(Resque $resque)
     {
         $this->resque = $resque;
     }
 
-    public function enqueue(Job $job)
+    /**
+     * @param Job  $job
+     * @param bool $trackStatus
+     *
+     * @return null|\Resque_Job_Status
+     */
+    public function enqueue(Job $job, $trackStatus = false)
     {
-        $this->resque->enqueue($job->queue(), get_class($job), $job->arguments());
+        $id = $this->resque->enqueue($job->queue(), get_class($job), $job->arguments(), $trackStatus);
+
+        if (true === $trackStatus) {
+            return new \Resque_Job_Status($id);
+        }
+
+        return null;
     }
 
-    public function enqueueOnce(Job $job)
+    /**
+     * @param Job  $job
+     * @param bool $trackStatus
+     *
+     * @return null|\Resque_Job_Status
+     */
+    public function enqueueOnce(Job $job, $trackStatus = false)
     {
         $queue = new Queue($job->queue());
-        
+
+        foreach ($queue->jobs() as $queuedJob) {
+            if ($job->payload['class'] === get_class($queuedJob) && count(array_intersect($queuedJob->getArguments(),
+                    $job->arguments())) === $job->arguments()
+            ) {
+                return ($trackStatus) ? new \Resque_Job_Status($job->payload['id']) : null;
+            }
+        }
+
+        return $this->enqueue($job, $trackStatus);
+    }
+
+    /**
+     * @return \Resque_Redis
+     */
+    public function redis()
+    {
+        return $this->resque->redis();
+    }
+
+    /**
+     * @return int
+     *
+     * @throws RuntimeException
+     */
+    public function fork()
+    {
+        if (false === function_exists('pcntl_fork')) {
+            return -1;
+        }
+
+        $pid = pcntl_fork();
+        if (-1 === $pid) {
+            throw new RuntimeException('Unable to fork child worker.');
+        }
+
+        return $pid;
     }
 }