update code

app/Http/Controllers/Api/NotificationsController.php

@@ -0,0 +1,91 @@
+<?php
+
+namespace App\Http\Controllers\Api;
+
+use App\Http\Controllers\Controller;
+use Illuminate\Http\Request;
+
+class NotificationsController extends Controller
+{
+    /**
+     * Get all notifications
+     *
+     * @return \Illuminate\Http\Response
+     */
+    public function index()
+    {
+        $data = request()->user()->notifications;
+        return $this->respond($data);
+    }
+
+    /**
+     * Get read notifications
+     *
+     * @return \Illuminate\Http\Response
+     */
+    public function read()
+    {
+        $data = request()->user()->readNotifications;
+        return $this->respond($data);
+    }
+
+    /**
+     * Get unread notifications
+     *
+     * @return \Illuminate\Http\Response
+     */
+    public function unread()
+    {
+        $data = request()->user()->unreadNotifications;
+        return $this->respond($data);
+    }
+
+    /**
+     * Mark all as read
+     *
+     * @return \Illuminate\Http\Response
+     */
+    public function markAllAsRead()
+    {
+        request()->user()->unreadNotifications->markAsRead();
+        return $this->respondNoContent();
+    }
+
+    /**
+     * Mark as read
+     *
+     * @param  int  $id
+     * @return \Illuminate\Http\Response
+     */
+    public function markAsRead($id)
+    {
+        $data = request()->user()->notifications->where('id', $id)->first();
+        $data->markAsRead();
+        return $this->respond($data);
+    }
+
+    /**
+     * Mark as unread
+     *
+     * @param  int  $id
+     * @return \Illuminate\Http\Response
+     */
+    public function markAsUnread($id)
+    {
+        $data = request()->user()->notifications->where('id', $id)->first();
+        $data->markAsUnread();
+        return $this->respond($data);
+    }
+
+    /**
+     * Remove the specified resource from storage.
+     *
+     * @param  int  $id
+     * @return \Illuminate\Http\Response
+     */
+    public function destroy($id)
+    {
+        request()->user()->notifications->where('id', $id)->first()->delete();
+        return $this->respondNoContent();
+    }
+}