Improve the publish service implementation

airtime_mvc/application/services/PodcastEpisodeService.php

@@ -215,6 +215,22 @@ class Application_Service_PodcastEpisodeService extends Application_Service_Thir
             ->delete();
     }
 
+    /**
+     * Fetch the publication status for the file with the given ID
+     *
+     * @param int $fileId the ID of the file to check
+     *
+     * @return int 1 if the file has been published,
+     *             0 if the file has yet to be published,
+     *             -1 if the file is in a pending state,
+     *             2 if the source is unreachable (disconnected)
+     */
+    public function getPublishStatus($fileId) {
+        $stationPodcast = StationPodcastQuery::create()
+            ->findOneByDbPodcastId(Application_Model_Preference::getStationPodcastId());
+        return (int) $stationPodcast->hasEpisodeForFile($fileId);
+    }
+
     /**
      * @param $episodeId
      * @return array