Introduced ServiceResult and ServiceResultError interfaces, and respective classes with related methods. These changes were necessary to add and handle service results throughout the app. We now have a standard way to return and handle both successes and errors from our services. This leads to cleaner, clearer, and more maintainable code.

app/Contracts/ServiceResult.php

@@ -0,0 +1,9 @@
+<?php
+declare(strict_types=1);
+
+namespace App\Contracts;
+
+interface ServiceResult
+{
+    public function isSuccess(): bool;
+}

app/Contracts/ServiceResultError.php

@@ -0,0 +1,12 @@
+<?php
+declare(strict_types=1);
+
+namespace App\Contracts;
+
+interface ServiceResultError
+{
+    public function getCode(): ?int;
+    public function getMessage(): string;
+    public function getErrors(): array;
+    public function getData(): array;
+}