refactor: Decouple OrderFacade from ShoppingCartService

sm-core/src/main/java/com/salesmanager/core/business/services/shoppingcart/ShoppingCartAdapter.java

@@ -0,0 +1,28 @@
+package com.salesmanager.core.business.services.shoppingcart;
+
+import com.salesmanager.core.model.merchant.MerchantStore;
+import com.salesmanager.core.model.shipping.ShippingProduct;
+import com.salesmanager.core.model.shoppingcart.ShoppingCart;
+
+import java.util.List;
+
+/**
+ * Adapter interface for shopping cart operations needed by the orders domain
+ */
+public interface ShoppingCartAdapter {
+
+    /**
+     * Get shopping cart by ID
+     */
+    ShoppingCart getById(Long cartId, MerchantStore store) throws Exception;
+
+    /**
+     * Save or update shopping cart
+     */
+    void saveOrUpdate(ShoppingCart shoppingCart) throws Exception;
+
+    /**
+     * Create shipping products from cart
+     */
+    List<ShippingProduct> createShippingProducts(ShoppingCart cart) throws Exception;
+}

sm-core/src/main/java/com/salesmanager/core/business/services/shoppingcart/ShoppingCartAdapterImpl.java

@@ -0,0 +1,31 @@
+package com.salesmanager.core.business.services.shoppingcart;
+
+import com.salesmanager.core.model.merchant.MerchantStore;
+import com.salesmanager.core.model.shipping.ShippingProduct;
+import com.salesmanager.core.model.shoppingcart.ShoppingCart;
+import org.springframework.stereotype.Service;
+
+import javax.inject.Inject;
+import java.util.List;
+
+@Service("shoppingCartAdapter")
+public class ShoppingCartAdapterImpl implements ShoppingCartAdapter {
+
+    @Inject
+    private ShoppingCartService shoppingCartService;
+
+    @Override
+    public ShoppingCart getById(Long cartId, MerchantStore store) throws Exception {
+        return shoppingCartService.getById(cartId, store);
+    }
+
+    @Override
+    public void saveOrUpdate(ShoppingCart shoppingCart) throws Exception {
+        shoppingCartService.saveOrUpdate(shoppingCart);
+    }
+
+    @Override
+    public List<ShippingProduct> createShippingProducts(ShoppingCart cart) throws Exception {
+        return shoppingCartService.createShippingProduct(cart);
+    }
+}