Add downgrade action to UpgradeController, fix SoundCloud schema and bugs

airtime_mvc/application/controllers/UpgradeController.php

@@ -33,4 +33,35 @@ class UpgradeController extends Zend_Controller_Action
                  ->appendBody($e->getMessage());
         }
     }
+
+    public function downgradeAction() {
+        $this->view->layout()->disableLayout();
+        $this->_helper->viewRenderer->setNoRender(true);
+
+        if (!RestAuth::verifyAuth(true, false, $this)) {
+            return;
+        }
+
+        $request = $this->getRequest();
+        $toVersion = $request->getParam("version");
+
+        try {
+            $downgradePerformed = UpgradeManager::doDowngrade($toVersion);
+
+            if (!$downgradePerformed) {
+                $this->getResponse()
+                    ->setHttpResponseCode(200)
+                    ->appendBody("No downgrade was performed. The current schema version is " . Application_Model_Preference::GetSchemaVersion() . ".<br>");
+            } else {
+                $this->getResponse()
+                    ->setHttpResponseCode(200)
+                    ->appendBody("Downgrade to Airtime schema version " . Application_Model_Preference::GetSchemaVersion() . " OK<br>");
+            }
+        } catch (Exception $e) {
+            $this->getResponse()
+                ->setHttpResponseCode(400)
+                ->appendBody($e->getMessage());
+        }
+    }
+
 }

airtime_mvc/application/controllers/downgrade_sql/airtime_2.5.13/downgrade.sql

@@ -0,0 +1,11 @@
+-----------------------------------------------------------------------
+-- third_party_track_references
+-----------------------------------------------------------------------
+
+DROP TABLE IF EXISTS "third_party_track_references" CASCADE;
+
+-----------------------------------------------------------------------
+-- celery_tasks
+-----------------------------------------------------------------------
+
+DROP TABLE IF EXISTS "celery_tasks" CASCADE;

airtime_mvc/application/controllers/upgrade_sql/airtime_2.5.13/upgrade.sql

@@ -20,7 +20,8 @@ CREATE TABLE IF NOT EXISTS "third_party_track_references"
 
 CREATE TABLE IF NOT EXISTS "celery_tasks"
 (
-    "id" VARCHAR(256) NOT NULL,
+    "id" serial NOT NULL,
+    "task_id" VARCHAR(256) NOT NULL,
     "track_reference" INTEGER NOT NULL,
     "name" VARCHAR(256),
     "dispatch_time" TIMESTAMP,