better database filters

app/[locale]/admin/configuration/page.tsx

@@ -1,7 +1,6 @@
 import { container } from '@/composition-root/container';
 import { getDictionary } from '@/shared/i18n/get-dictionary';
 import { requireAdmin } from '@/shared/authorization/require-admin';
-import { ListCategoriesUseCase } from '@/modules/products/application/list-categories-use-case';
 import { ConfigurationForm } from './configuration-form';
 import { resolveCategoryDisplay } from '@/modules/products/domain/entities/category-translation';
 import styles from './page.module.css';
@@ -16,8 +15,9 @@ export default async function AdminConfigurationPage({
   await requireAdmin(locale);
 
   const dict = await getDictionary(locale as 'es' | 'cat');
-  const useCase = new ListCategoriesUseCase(container.getCategoryRepository());
-  const categories = await useCase.execute(locale === 'cat' ? 'cat' : 'es');
+  const categories = await container
+    .getListCategoriesUseCase()
+    .execute(locale === 'cat' ? 'cat' : 'es');
 
   return (
     <div className={styles.container}>

app/[locale]/admin/sellers/[sellerId]/page.tsx

@@ -2,7 +2,6 @@ import { notFound } from 'next/navigation';
 import { container } from '@/composition-root/container';
 import { getDictionary } from '@/shared/i18n/get-dictionary';
 import { NotFoundError } from '@/shared/kernel/app-error';
-import { GetSellerUseCase } from '@/modules/sellers/application/use-cases/get-seller-use-case';
 import { requireAdmin } from '@/shared/authorization/require-admin';
 import { BackLink } from '@/shared/ui/back-link';
 import { Card } from '@/shared/ui/card';
@@ -19,8 +18,7 @@ export default async function AdminSellerDetailPage({
   await requireAdmin(locale);
 
   const dict = await getDictionary(locale as 'es' | 'cat');
-  const sellerRepository = container.getSellerRepository();
-  const getSeller = new GetSellerUseCase(sellerRepository);
+  const getSeller = container.getSellerUseCase();
 
   let seller;
   try {

app/[locale]/admin/sellers/[sellerId]/products/page.tsx

@@ -1,8 +1,6 @@
 import { BackLink } from '@/shared/ui/back-link';
 import { container } from '@/composition-root/container';
-import { ProductListQueryUseCase } from '@/modules/products/application/product-list-query-use-case';
 import { productListQuerySchema } from '@/modules/products/presentation/schemas/product-list-query-schema';
-import { GetSellerUseCase } from '@/modules/sellers/application/use-cases/get-seller-use-case';
 import { getDictionary } from '@/shared/i18n/get-dictionary';
 import { PaginationDefaults } from '@/shared/kernel/domain/value-objects/pagination';
 import { SearchForm } from '@/shared/ui/search-form';
@@ -40,14 +38,12 @@ export default async function AdminSellerProductsPage({
 
   const dict = await getDictionary(locale as 'es' | 'cat');
 
-  const sellerRepository = container.getSellerRepository();
-  const getSeller = new GetSellerUseCase(sellerRepository);
-  const seller = await getSeller.execute({ sellerId });
+  const seller = await container.getSellerUseCase().execute({ sellerId });
   const sellerName = seller.name;
 
-  const productRepository = container.getProductRepository();
-  const useCase = new ProductListQueryUseCase(productRepository);
-  const result = await useCase.execute({ ...filter, audience: 'admin' });
+  const result = await container
+    .getProductListQueryUseCase()
+    .execute({ ...filter, audience: 'admin' });
   const { items: products, totalPages } = result;
   let page = result.page;
 

app/[locale]/admin/sellers/page.tsx

@@ -1,7 +1,6 @@
 import { redirect } from 'next/navigation';
 import Link from 'next/link';
 import { container } from '@/composition-root/container';
-import { ListSellersUseCase } from '@/modules/sellers/application/use-cases/list-sellers-use-case';
 import { listSellersQuerySchema } from '@/modules/sellers/presentation/schemas/seller-schemas';
 import { getDictionary } from '@/shared/i18n/get-dictionary';
 import { LocalizedDate } from '@/shared/kernel/domain/value-objects/localized-date';
@@ -56,9 +55,7 @@ export default async function AdminSellersPage({
   });
 
   const dict = await getDictionary(locale as 'es' | 'cat');
-  const sellerRepository = container.getSellerRepository();
-  const useCase = new ListSellersUseCase(sellerRepository);
-  const result = await useCase.execute(filter);
+  const result = await container.getListSellersUseCase().execute(filter);
   const { items: sellers, page: currentPage, pageSize, totalPages } = result;
 
   // Redirect to valid page if current page is out of range

app/[locale]/cart/page.tsx

@@ -1,15 +1,9 @@
 import { getServerSession } from 'next-auth';
 import { authOptions } from '@/shared/infrastructure/auth-options';
 import { container } from '@/composition-root/container';
-import { GetCart } from '@/modules/cart/application/get-cart';
 import { getDictionary } from '@/shared/i18n/get-dictionary';
-import {
-  CartView,
-  type CartItemDTO,
-} from '@/modules/cart/presentation/components/cart-view';
-import type { ProductEntity } from '@/modules/products/domain/product-repository';
-import type { CustomizationSnapshot } from '@/modules/cart/domain/customization-lookup-port';
-import { resolveDisplay } from '@/modules/products/domain/entities/product-translation';
+import { CartView } from '@/modules/cart/presentation/components/cart-view';
+import type { CartViewItem } from '@/modules/cart/application/get-cart-view-use-case';
 
 /**
  * Cart page — RSC shell.
@@ -33,73 +27,15 @@ export default async function CartPage({
   const session = await getServerSession(authOptions);
   const isAuthenticated = !!session?.user?.id;
 
-  let items: CartItemDTO[] = [];
+  let items: CartViewItem[] = [];
 
   if (isAuthenticated) {
-    const cartRepository = container.getCartRepository();
-    const getCart = new GetCart(cartRepository);
-    const cart = await getCart.execute(session.user.id);
-
-    if (cart.items.length > 0) {
-      // Enrich items with product display data.
-      const productRepository = container.getProductRepository();
-      const productIds = [...new Set(cart.items.map((i) => i.productId.value))];
-      const products = await Promise.all(
-        productIds.map((id) => productRepository.findById(id, locale)),
-      );
-      const productMap = new Map<string, ProductEntity>();
-      for (const p of products) {
-        if (p) productMap.set(p.id, p);
-      }
-
-      // Resolve customization snapshots from customizationIdList.
-      // The cart module never imports the customizations module directly;
-      // the container wires a CustomizationLookupAdapter at runtime.
-      const allCustomizationIds = cart.items.flatMap(
-        (item) => item.customizationIdList,
-      );
-      const uniqueCustomizationIds = [...new Set(allCustomizationIds)];
-      const customizationLookup = container.getCustomizationLookup();
-      const customizationSnapshots =
-        uniqueCustomizationIds.length > 0
-          ? await customizationLookup.findByIds(uniqueCustomizationIds)
-          : [];
-      const customizationMap = new Map(
-        customizationSnapshots.map((s: CustomizationSnapshot) => [s.id, s]),
-      );
-
-      items = cart.items.map((item) => {
-        const product = productMap.get(item.productId.value);
-        const snapshot = resolveCustomizationSnapshot(
-          item.customizationIdList,
-          customizationMap,
-        );
-        return {
-          id: item.id,
-          productId: item.productId.value,
-          productName:
-            resolveDisplay(product?.translations ?? [], locale)?.name ??
-            'Unknown Product',
-          productImageUrl: product?.images?.[0]?.url ?? null,
-          sellerId: item.sellerId.value,
-          sellerName: product?.sellerName ?? 'Unknown Seller',
-          quantity: item.quantity,
-          unitPrice: item.unitPriceSnapshot.amount,
-          lineTotal: +(item.unitPriceSnapshot.amount * item.quantity).toFixed(
-            2,
-          ),
-          customization: {
-            text: snapshot?.text ?? null,
-            color: snapshot?.color ?? null,
-            size: snapshot?.size ?? null,
-            imageUrl: snapshot?.imageUrl ?? null,
-            imageUploadId: null,
-            colorImageUrl: null,
-            designPosition: snapshot?.designPosition ?? null,
-          },
-        };
-      });
-    }
+    ({ items } = await container.getCartViewUseCase().execute({
+      userId: session.user.id,
+      locale,
+      unknownProductName: dict.common.unknownProduct,
+      unknownSellerName: dict.common.unknownSeller,
+    }));
   }
 
   return (
@@ -130,20 +66,3 @@ export default async function CartPage({
     />
   );
 }
-
-/**
- * Resolves a single item's customization snapshot from the pre-fetched map.
- * Returns the first matching snapshot or null when the item has no
- * customizations or all IDs were deleted.
- */
-function resolveCustomizationSnapshot(
-  customizationIdList: string[],
-  customizationMap: Map<string, CustomizationSnapshot>,
-): CustomizationSnapshot | null {
-  if (customizationIdList.length === 0) return null;
-  for (const id of customizationIdList) {
-    const snap = customizationMap.get(id);
-    if (snap) return snap;
-  }
-  return null;
-}