Add cash-on-delivery payment type with cart fee pipeline

src/Providers/PaymentServiceProvider.php

@@ -0,0 +1,42 @@
+<?php
+
+namespace Modules\Core\Providers;
+
+use Illuminate\Support\ServiceProvider;
+use Lunar\Pipelines\Cart\ApplyShipping;
+
+class PaymentServiceProvider extends ServiceProvider
+{
+    public function register(): void
+    {
+        $this->mergeConfigFrom(__DIR__ . '/../../config/payment.php', 'payment');
+    }
+
+    public function boot(): void
+    {
+        config([
+            'lunar.payments.types' => array_merge(
+                config('lunar.payments.types', []),
+                config('payment.types', [])
+            ),
+        ]);
+
+        $cartPipeline = config('lunar.cart.pipelines.cart', []);
+        $insertAfter = array_search(ApplyShipping::class, $cartPipeline, true);
+
+        foreach (config('payment.cart_pipeline', []) as $pipe) {
+            if (in_array($pipe, $cartPipeline, true)) {
+                continue;
+            }
+
+            if ($insertAfter === false) {
+                $cartPipeline[] = $pipe;
+            } else {
+                array_splice($cartPipeline, $insertAfter + 1, 0, [$pipe]);
+                $insertAfter++;
+            }
+        }
+
+        config(['lunar.cart.pipelines.cart' => $cartPipeline]);
+    }
+}