Feat: Updates to Payments, Checkout Services, Payment Events

src/Payment/Contracts/SupportsRefunds.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace Modules\Core\Payment\Contracts;
+
+use Lunar\Models\Order;
+use Modules\Core\Payment\DataTransferObjects\RefundResult;
+
+/**
+ * Optional capability for payment drivers whose gateway supports refunding
+ * a prior charge. Drivers without a refund API (or that never got that far
+ * — e.g. an offline/manual driver) simply don't implement it. Mirrors
+ * Shipping\Contracts\SupportsTracking's opt-in shape.
+ */
+interface SupportsRefunds
+{
+    /**
+     * $reference is the gateway's own identifier for the charge being
+     * refunded (e.g. a Viva Wallet transaction id) — not a Lunar
+     * Transaction model, since not every gateway's refund flow maps
+     * cleanly onto one. $amount is in the currency's minor unit, same
+     * convention as Lunar\Base\Casts\Price.
+     */
+    public function refund(Order $order, string $reference, int $amount, ?string $notes = null): RefundResult;
+}