replace old crawler, without specific crawler and saver implementation

app/common/enums.js

@@ -0,0 +1,28 @@
+const AD_TYPE = {
+  AD_TYPE_SALE: 1,
+  AD_TYPE_RENT: 2
+};
+
+const AD_CATEGORY = {
+  CATEGORY_FLAT: 0,
+  CATEGORY_HOUSE: 1,
+  CATEGORY_OFFICE: 2,
+  CATEGORY_LAND: 3,
+  CATEGORY_APARTMENT: 4,
+  CATEGORY_GARAGE: 5
+};
+
+const IGNORED_USERNAMES = [];
+
+const REAL_ESTATE_STATUS = {
+  STATUS_NORMAL: 0,
+  STATUS_RESERVED: 1,
+  STATUS_SOLD: 2
+};
+
+module.exports = {
+  AD_TYPE,
+  IGNORED_USERNAMES,
+  AD_CATEGORY,
+  REAL_ESTATE_STATUS
+};