Fix: Correct shipment resolving

src/Checkout/Http/Controllers/CheckoutController.php

@@ -646,6 +646,18 @@ class CheckoutController extends Controller
             ])->render(),
             // Composer (Providers\CheckoutModuleServiceProvider) fills $cart / $lines.
             'summaryHtml' => $options === null ? null : view('checkout::partials.cart-body')->render(),
+            // getPaymentMethods() filters by the cart's CURRENT fulfillment
+            // type (Modules\Core\Checkout\Services\CheckoutService's own
+            // docblock) — a shipping-option change can change that filter's
+            // result (e.g. switching to store pickup should drop
+            // cash-on-delivery and offer "pay in store" instead), so this
+            // needs to be re-rendered every time shipping options are,
+            // otherwise the payment section silently goes stale until a
+            // full page reload.
+            'paymentMethodsHtml' => $options === null ? null : view('checkout::partials.payment-methods', [
+                'paymentMethods' => $this->checkout->getPaymentMethods(),
+                'cart' => $cart,
+            ])->render(),
         ]);
     }
 

src/Checkout/Services/CheckoutService.php

@@ -22,11 +22,13 @@ use Modules\Core\Checkout\Exceptions\InvalidShippingOptionException;
 use Modules\Core\Checkout\Exceptions\NoShippingAddressException;
 use Modules\Core\Checkout\Exceptions\TermsNotAcceptedException;
 use Modules\Core\Checkout\Exceptions\UnknownPaymentTypeException;
+use Lunar\Shipping\Facades\Shipping;
 use Modules\Core\Payment\Contracts\RequiresFulfillmentType;
 use Modules\Core\Payment\DTOs\PaymentResult;
 use Modules\Core\Payment\Models\PaymentMethod;
 use Modules\Core\Payment\Services\PaymentDriverRegistry;
 use Modules\Core\Payment\Services\PaymentMethodCache;
+use Modules\Core\Shipping\Contracts\SupportsCashCollection;
 use Modules\Core\Shipping\Support\FulfillmentType;
 
 /**
@@ -254,42 +256,59 @@ class CheckoutService
      *      a courier delivery makes no sense (no staff member present at
      *      handoff to take cash), and cash-on-delivery alongside store
      *      pickup is equally meaningless (OfflinePaymentDriver already
-     *      covers that in-person moment). A cart with no shipping option
-     *      selected yet imposes no constraint here — every method is
-     *      offered until a fulfillment type is actually known, the same
-     *      leniency setShippingAddress()'s own docblock describes for
-     *      required-field enforcement happening at the payment gate, not
-     *      mid-checkout.
+     *      covers that in-person moment).
+     *   5. for cash-on-delivery specifically, the cart's currently selected
+     *      shipping method's own driver implements Modules\Core\Shipping\
+     *      Contracts\SupportsCashCollection — "carrier" alone
+     *      (RequiresFulfillmentType) isn't precise enough, since an
+     *      unattended parcel locker network (Modules\Core\Shipping\
+     *      Carriers\BoxNow\BoxNowRateDriver) is a carrier delivery with
+     *      nobody there to collect cash, unlike an actual courier
+     *      (Modules\Core\Shipping\Carriers\Acs\AcsRateDriver).
+     *   Checks 4 and 5 both impose no constraint when the cart has no
+     *   shipping option selected yet — every method is offered until a
+     *   shipping method is actually known, the same leniency
+     *   setShippingAddress()'s own docblock describes for required-field
+     *   enforcement happening at the payment gate, not mid-checkout.
      *
      * @return Collection<int, PaymentMethod>
      */
     public function getPaymentMethods(): Collection
     {
-        $fulfillmentType = $this->currentFulfillmentType();
+        $shippingMethod = $this->currentShippingMethod();
+        $fulfillmentType = $shippingMethod ? FulfillmentType::resolve($shippingMethod) : null;
 
         return $this->paymentMethods->all()
             ->filter(fn (PaymentMethod $method) => $method->enabled && $method->driver_missing_at === null)
-            ->filter(function (PaymentMethod $method) use ($fulfillmentType) {
+            ->filter(function (PaymentMethod $method) use ($fulfillmentType, $shippingMethod) {
                 $driver = $this->paymentDrivers->resolve($method->driver);
 
                 if (! $driver?->isConfigured()) {
                     return false;
                 }
 
-                if ($fulfillmentType === null || ! $driver instanceof RequiresFulfillmentType) {
-                    return true;
+                if ($fulfillmentType !== null && $driver instanceof RequiresFulfillmentType
+                    && $driver->requiredFulfillmentType() !== $fulfillmentType) {
+                    return false;
                 }
 
-                return $driver->requiredFulfillmentType() === $fulfillmentType;
+                // collect(...)->get() rather than Shipping::driver(), which
+                // throws for an unregistered key — a stale ShippingMethod
+                // row (e.g. still pointing at a removed generic driver)
+                // must fail this check quietly, the same as any other
+                // driver this module doesn't recognize.
+                if ($shippingMethod !== null && $method->driver === 'cash-on-delivery') {
+                    $shippingDriver = collect(Shipping::getSupportedDrivers())->get($shippingMethod->driver);
+
+                    return $shippingDriver instanceof SupportsCashCollection && $shippingDriver->collectsCash();
+                }
+
+                return true;
             })
             ->values();
     }
 
-    /**
-     * @return 'carrier'|'store_pickup'|null null when the cart has no
-     *   shipping option selected yet
-     */
-    private function currentFulfillmentType(): ?string
+    private function currentShippingMethod(): ?ShippingMethod
     {
         $identifier = $this->cart->currentOrCreate()->shippingAddress?->shipping_option;
 
@@ -297,9 +316,7 @@ class CheckoutService
             return null;
         }
 
-        $method = ShippingMethod::where('code', $identifier)->first();
-
-        return $method ? FulfillmentType::resolve($method) : null;
+        return ShippingMethod::where('code', $identifier)->first();
     }
 
     /**