move into sonardesk

Commerce/Services/ConfiguredTaxProvider.php

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+<?php
+
+namespace Modules\Commerce\Services;
+
+use Modules\Commerce\Contracts\TaxProvider;
+
+final class ConfiguredTaxProvider implements TaxProvider
+{
+    public function calculate(float $subtotal, array $address = []): float
+    {
+        return config('commerce.prices_include_tax') ? 0.0 : round($subtotal * 0.2, 2);
+    }
+}

Commerce/Services/DatabaseInventoryProvider.php

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+<?php
+
+namespace Modules\Commerce\Services;
+
+use Illuminate\Support\Facades\DB;
+use Modules\Commerce\Contracts\InventoryProvider;
+use Modules\Commerce\Models\InventoryMovement;
+use Modules\Commerce\Models\Product;
+
+final class DatabaseInventoryProvider implements InventoryProvider
+{
+    public function adjust(Product $product, int $quantity, string $reason, ?int $userId = null): void
+    {
+        DB::transaction(function () use ($product, $quantity, $reason, $userId) {
+            $product->increment('stock_quantity', $quantity);
+            InventoryMovement::create(['product_id' => $product->id, 'quantity' => $quantity, 'reason' => $reason, 'created_by' => $userId]);
+        });
+    }
+
+    public function available(Product $product): int
+    {
+        return max(0, (int) $product->stock_quantity);
+    }
+}

Commerce/Services/FlatRateShippingProvider.php

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+<?php
+
+namespace Modules\Commerce\Services;
+
+use Modules\Commerce\Contracts\ShippingProvider;
+
+final class FlatRateShippingProvider implements ShippingProvider
+{
+    public function quote(array $address, float $subtotal): float
+    {
+        return $subtotal >= 50 ? 0.0 : 4.95;
+    }
+}

Commerce/Services/ManualPaymentProvider.php

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+<?php
+
+namespace Modules\Commerce\Services;
+
+use Modules\Commerce\Contracts\PaymentProvider;
+use Modules\Commerce\Models\Order;
+
+final class ManualPaymentProvider implements PaymentProvider
+{
+    public function charge(Order $order, array $data = []): array
+    {
+        return ['status' => 'pending', 'provider' => 'manual', 'reference' => null];
+    }
+
+    public function refund(Order $order, float $amount): array
+    {
+        return ['status' => 'pending', 'provider' => 'manual', 'amount' => $amount];
+    }
+}