add alersts api

app/Http/Controllers/AlertController.php

@@ -0,0 +1,35 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use Illuminate\Http\Request;
+
+class AlertController extends Controller
+{
+    /**
+     * Get alerts for user
+     */
+    public function index()
+    {
+        $alerstQuery = auth()->user()->alerts()->whereNull('seen_at');
+
+        $alerts = $alerstQuery->get();
+
+        $alerstQuery->update([
+            'seen_at' => now()
+        ]);
+
+        return response()->json($this->format($alerts));
+    }
+
+    /**
+     * Format
+     */
+    public function format($alerts)
+    {
+        return $alerts->map(fn ($alert) => [
+            'name' => $alert->name,
+            'value' => $alert->value,
+        ]);
+    }
+}