add notifications logic and add support of both JWT and Sanctum

tests/Unit/Services/Staff/StaffTimeOffLinkServiceTest.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace Tests\Unit\Services\Staff;
+
+use App\Services\Staff\StaffTimeOffLinkService;
+use Tests\TestCase;
+
+class StaffTimeOffLinkServiceTest extends TestCase
+{
+    public function test_token_round_trip(): void
+    {
+        $service = new StaffTimeOffLinkService('secret', 3600);
+
+        $token = $service->createToken(['uid' => 10, 'email' => 'staff@example.com']);
+        $payload = $service->parseToken($token);
+
+        $this->assertNotNull($payload);
+        $this->assertSame(10, $payload['uid']);
+        $this->assertSame('staff@example.com', $payload['email']);
+    }
+
+    public function test_token_invalid_on_expiry(): void
+    {
+        $service = new StaffTimeOffLinkService('secret', 1);
+
+        $token = $service->createToken(['uid' => 10]);
+        sleep(2);
+        $payload = $service->parseToken($token);
+
+        $this->assertNull($payload);
+    }
+}