chore(cart): expose bundle configuration on cart item level in graphql

CHANGELOG.md

@@ -12,6 +12,7 @@
 * **Breaking**(In case you have implemented a custom cart service): Extend the cart service interface with `UpdateItemBundleConfig` to allow updating bundles that have already been placed inside the cart.
 * GraphQL:
   * Add new mutation `Commerce_Cart_UpdateItemBundleConfig` to update bundle configs for existing cart items
+  * Expose selected bundle configuration on the cart items 
 
 **checkout**
 * initialize place order metrics with 0 on application start to follow prometheus best practices

cart/interfaces/graphql/dto/cartItem.go

@@ -0,0 +1,36 @@
+package dto
+
+import (
+	"context"
+
+	"flamingo.me/flamingo-commerce/v3/cart/domain/cart"
+)
+
+type (
+	BundleChoiceConfiguration struct {
+		Identifier             string
+		MarketplaceCode        string
+		VariantMarketplaceCode string
+		Qty                    int
+	}
+
+	CartItemResolver struct{}
+)
+
+func (c CartItemResolver) BundleConfiguration(ctx context.Context, item *cart.Item) ([]*BundleChoiceConfiguration, error) {
+	if item.BundleConfig == nil {
+		return nil, nil
+	}
+
+	choices := make([]*BundleChoiceConfiguration, 0)
+	for identifier, configuration := range item.BundleConfig {
+		choices = append(choices, &BundleChoiceConfiguration{
+			Identifier:             string(identifier),
+			MarketplaceCode:        configuration.MarketplaceCode,
+			VariantMarketplaceCode: configuration.MarketplaceCode,
+			Qty:                    configuration.Qty,
+		})
+	}
+
+	return choices, nil
+}

cart/interfaces/graphql/schema.graphql

@@ -223,7 +223,14 @@ type Commerce_Cart_Item {
     rowPriceGross: Commerce_Price!
     rowPriceNet: Commerce_Price!
     appliedDiscounts: Commerce_Cart_AppliedDiscounts!
-    #    rowTaxes: Commerce_Taxes!
+    bundleConfiguration: [Commerce_Cart_Item_BundleChoiceConfiguration]
+}
+
+type Commerce_Cart_Item_BundleChoiceConfiguration {
+    identifier: String
+    marketplaceCode:        String
+    variantMarketplaceCode: String
+    qty:                    Int
 }
 
 type Commerce_Cart_Address {

cart/interfaces/graphql/service.go

@@ -54,7 +54,9 @@ func (*Service) Types(types *graphql.Types) {
 	types.Resolve("Commerce_Cart_ShippingItem", "appliedDiscounts", dto.CartAppliedDiscountsResolver{}, "ForShippingItem")
 	types.Map("Commerce_Cart_DecoratedItem", dto.DecoratedCartItem{})
 	types.Map("Commerce_Cart_Item", cart.Item{})
+	types.Map("Commerce_Cart_Item_BundleChoiceConfiguration", dto.BundleChoiceConfiguration{})
 	types.Resolve("Commerce_Cart_Item", "appliedDiscounts", dto.CartAppliedDiscountsResolver{}, "ForItem")
+	types.Resolve("Commerce_Cart_Item", "bundleConfiguration", dto.CartItemResolver{}, "BundleConfiguration")
 	types.Map("Commerce_Cart_Address", cart.Address{})
 	types.Map("Commerce_Cart_Person", cart.Person{})
 	types.Map("Commerce_Cart_ExistingCustomerData", cart.ExistingCustomerData{})