feat(catalog): implement sprint 10 advanced search experience

src/app/facades/platform/product.facade.ts

@@ -9,6 +9,7 @@ import {
 	ProductSearchQuery,
 	RelatedProductsQuery,
 } from '../../core/products/models/product-domain.model';
+import { SearchCriteria } from '../../core/products/models/catalog-experience.model';
 import { EngagementListQuery, EngagementListResult, Question, RatingSummary, Review, SubmitQuestionInput, SubmitReviewInput } from '../../core/products/models/product-engagement.model';
 
 @Injectable({ providedIn: 'root' })
@@ -66,4 +67,58 @@ export class ProductFacade {
 	submitQuestion(productID: number, input: SubmitQuestionInput): Observable<void> {
 		return this.productData.submitQuestion(productID, input);
 	}
+
+	search(criteria: SearchCriteria): Observable<ProductListResult> {
+		const pageSize = Math.max(1, criteria.pageSize ?? 24);
+		const page = Math.max(1, criteria.page ?? 1);
+		const skip = (page - 1) * pageSize;
+
+		return this.searchProducts({
+			search: criteria.keyword ?? '',
+			count: pageSize,
+			skip,
+			categoryIDs: criteria.categoryIDs,
+			minPrice: criteria.minPrice,
+			maxPrice: criteria.maxPrice,
+			sort: criteria.sort === 'discount' ? 'price_desc' : criteria.sort
+		});
+	}
+
+	filter(criteria: SearchCriteria): Observable<ProductListResult> {
+		return this.search(criteria);
+	}
+
+	sort(criteria: SearchCriteria): Observable<ProductListResult> {
+		return this.search({ ...criteria, sort: criteria.sort ?? 'relevance' });
+	}
+
+	loadCatalog(criteria: SearchCriteria): Observable<ProductListResult> {
+		const hasKeyword = (criteria.keyword ?? '').trim().length > 0;
+		if (hasKeyword) {
+			return this.search(criteria);
+		}
+
+		const categoryID = criteria.categoryIDs?.[0];
+		if (categoryID != null) {
+			const pageSize = Math.max(1, criteria.pageSize ?? 24);
+			const page = Math.max(1, criteria.page ?? 1);
+			const skip = (page - 1) * pageSize;
+
+			return this.getProductsByCategory(categoryID, {
+				count: pageSize,
+				skip,
+				sort: criteria.sort === 'discount' ? 'price_desc' : criteria.sort
+			});
+		}
+
+		const pageSize = Math.max(1, criteria.pageSize ?? 24);
+		const page = Math.max(1, criteria.page ?? 1);
+		const skip = (page - 1) * pageSize;
+
+		return this.getProducts({
+			count: pageSize,
+			skip,
+			sort: criteria.sort === 'discount' ? 'price_desc' : criteria.sort
+		});
+	}
 }