Merge pull request #155 from shweelan/v1.0

Clear presets when task is deleted

lib/nbi.coffee

@@ -290,20 +290,26 @@ listener = (request, response) ->
       action = r[2]
       if not action? or action is '/'
         if request.method == 'DELETE'
-          db.tasksCollection.remove({'_id' : taskId}, (err, removedCount) ->
-            if err
-              response.writeHead(500)
-              response.end(errorToString(err))
-              return
+          db.tasksCollection.findOne({'_id' : taskId}, {'device' : 1}, (err, task) ->
+            throw err if err
 
-            if removedCount == 0
+            if not task
               response.writeHead(404)
               response.end()
               return
 
+            deviceId = task.device
+            db.tasksCollection.remove({'_id' : taskId}, (err, removedCount) ->
+              throw err if err
+
+              db.redisClient.del("#{deviceId}_presets_hash", (err) ->
+                throw err if err
+
                 response.writeHead(200)
                 response.end()
               )
+            )
+          )
         else
           response.writeHead 405, {'Allow': 'PUT DELETE'}
           response.end('405 Method Not Allowed')