Feature: Abstraction on Payments based on their operations

src/Payment/Enums/PaymentResultStatus.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace Modules\Core\Payment\Enums;
+
+/**
+ * The normalized outcome of a single gateway operation (pay, authorize,
+ * capture, void, refund) — never the gateway's own raw status string
+ * (Stripe's "succeeded", Nexi's "EXECUTED", Mastercard's own codes), so a
+ * caller never needs gateway-specific knowledge to know what happened.
+ */
+enum PaymentResultStatus
+{
+    case Succeeded;
+    case Failed;
+
+    /**
+     * The gateway hasn't resolved this operation yet and won't in the same
+     * call — e.g. Stripe's requires_action, a redirect the shopper hasn't
+     * completed. A driver returning this from initiate()/handleCallback()
+     * has not yet dispatched a terminal event; something else (a later
+     * callback) is expected to resolve it.
+     */
+    case Pending;
+}