CC-3449: Live Stream: Kick out live dj at the end of the show

- PHP side implementation

airtime_mvc/application/models/ShowInstance.php

@@ -827,4 +827,20 @@ class Application_Model_ShowInstance {
         $sql = "SELECT count(*) as cnt FROM $CC_CONFIG[showInstances] WHERE ends < '$day'";
         return $CC_DBC->GetOne($sql);
     }
+    
+    // this returns end timestamp of next show that has live DJ set up
+    public static function GetEndTimeOfNextShowWithLiveDJ(){
+        global $CC_CONFIG, $CC_DBC;
+        
+        $date = new Application_Model_DateHelper;
+        $utcTimeNow = $date->getUtcTimestamp();
+        
+        $sql = "SELECT ends
+				FROM cc_show_instances as si
+                JOIN cc_show as sh ON si.show_id = sh.id
+        		WHERE si.ends > '$utcTimeNow' and (sh.live_stream_using_airtime_auth or live_stream_using_custom_auth)
+        		ORDER BY si.ends";
+        
+        return $CC_DBC->GetOne($sql);
+    }
 }