Refactor pushStatusHandler to use Parse instead of direct access (#4173)

* Refactors pushStatusHandler to use HTTP interface so we can bind CloudCode hooks

* Handle correctly nested dot atomic operations

* Better handling of restricted class names, add support for afterSave _PushStatus

* Adds simple testing for afterSave(PushStatus)

* Reverts jobStatusHandler

* Addresses fixes

* adds delays to all methods

src/Controllers/DatabaseController.js

@@ -308,6 +308,19 @@ DatabaseController.prototype.update = function(className, query, update, {
     });
 };
 
+function expandResultOnKeyPath(object, key, value) {
+  if (key.indexOf('.') < 0) {
+    object[key] = value[key];
+    return object;
+  }
+  const path = key.split('.');
+  const firstKey = path[0];
+  const nextPath = path.slice(1).join('.');
+  object[firstKey] = expandResultOnKeyPath(object[firstKey] || {}, nextPath, value[firstKey]);
+  delete object[key];
+  return object;
+}
+
 function sanitizeDatabaseResult(originalObject, result) {
   const response = {};
   if (!result) {
@@ -319,7 +332,8 @@ function sanitizeDatabaseResult(originalObject, result) {
     if (keyUpdate && typeof keyUpdate === 'object' && keyUpdate.__op
       && ['Add', 'AddUnique', 'Remove', 'Increment'].indexOf(keyUpdate.__op) > -1) {
       // only valid ops that produce an actionable result
-      response[key] = result[key];
+      // the op may have happend on a keypath
+      expandResultOnKeyPath(response, key, result);
     }
   });
   return Promise.resolve(response);