update order

src/modules/cart/providers/cart.service.ts

@@ -153,6 +153,15 @@ export class CartService {
     return cart;
   }
 
+  /**
+   * Increment item quantity in cart by product purchase step
+   */
+  async incrementItemByStep(userId: string, shopId: string, variantId: string): Promise<Cart> {
+    const cart = await this.getOrCreateCart(userId, shopId);
+    await this.itemService.incrementByStep(cart, variantId, shopId);
+    return this.recalculateAndSaveCart(cart);
+  }
+
   /**
    * Increment item quantity in cart
    */