Notification system enhanced

- Base for notifcation center
- Show text in map if no data is available

backend/endpoints/notification.ts

@@ -0,0 +1,22 @@
+import { Response } from "express";
+import { LivebeatRequest } from "../lib/request";
+import { Notification } from "../models/notifications/notification.model";
+
+export async function getNotification(req: LivebeatRequest, res: Response) {
+    let limit = req.query.limit;
+    let skip = req.query.skip;
+
+    if (limit === undefined) { limit = '100' };
+    if (skip === undefined) { skip = '0' };
+
+    try {
+        const notifications = await Notification.find({ user: req.user?._id }).limit(Number(limit)).sort({ _id: -1 });
+        res.status(200).send(notifications);
+    } catch(error: any) {
+        if (error instanceof TypeError) {
+            res.status(400).send({ message: "'Limit' has to be a number" });
+        } else {
+            res.status(500).send({ message: "An error occured while processing your request" });
+        }
+    }
+}