aaa

lib/core/constants/api_endpoints.dart

@@ -58,6 +58,12 @@ class ApiEndpoints {
   /// Response: List of products
   static const String products = '/portalProduct/getAllProduct';
 
+  /// Get product stage in warehouse
+  /// POST: /portalWareHouse/GetProductStageInWareHouse
+  /// Body: { "WareHouseId": int, "ProductId": int }
+  /// Response: Product details with stage information
+  static const String productDetail = '/portalWareHouse/GetProductStageInWareHouse';
+
   /// Get product by ID
   /// GET: (requires auth token)
   /// Parameter: productId

lib/core/di/providers.dart

@@ -7,8 +7,11 @@ import '../../features/auth/domain/usecases/login_usecase.dart';
 import '../../features/auth/presentation/providers/auth_provider.dart';
 import '../../features/products/data/datasources/products_remote_datasource.dart';
 import '../../features/products/data/repositories/products_repository_impl.dart';
+import '../../features/products/domain/entities/product_stage_entity.dart';
 import '../../features/products/domain/repositories/products_repository.dart';
+import '../../features/products/domain/usecases/get_product_detail_usecase.dart';
 import '../../features/products/domain/usecases/get_products_usecase.dart';
+import '../../features/products/presentation/providers/product_detail_provider.dart';
 import '../../features/products/presentation/providers/products_provider.dart';
 import '../../features/warehouse/data/datasources/warehouse_remote_datasource.dart';
 import '../../features/warehouse/data/repositories/warehouse_repository_impl.dart';
@@ -269,6 +272,13 @@ final getProductsUseCaseProvider = Provider<GetProductsUseCase>((ref) {
   return GetProductsUseCase(repository);
 });
 
+/// Get product detail use case provider
+/// Encapsulates product detail fetching business logic
+final getProductDetailUseCaseProvider = Provider<GetProductDetailUseCase>((ref) {
+  final repository = ref.watch(productsRepositoryProvider);
+  return GetProductDetailUseCase(repository);
+});
+
 // Presentation Layer
 
 /// Products state notifier provider
@@ -340,6 +350,48 @@ final productsErrorProvider = Provider<String?>((ref) {
   return productsState.error;
 });
 
+/// Product detail state notifier provider
+/// Manages product detail state for a specific product in a warehouse
+/// This needs to be a family provider to support multiple product details
+final productDetailProvider =
+    StateNotifierProvider.family<ProductDetailNotifier, ProductDetailState, String>(
+  (ref, _) {
+    final getProductDetailUseCase = ref.watch(getProductDetailUseCaseProvider);
+    return ProductDetailNotifier(getProductDetailUseCase);
+  },
+);
+
+/// Convenient providers for product detail state
+
+/// Provider to get product stages list
+/// Usage: ref.watch(productStagesProvider(key))
+final productStagesProvider = Provider.family<List<ProductStageEntity>, String>((ref, key) {
+  final state = ref.watch(productDetailProvider(key));
+  return state.stages;
+});
+
+/// Provider to get selected product stage
+/// Usage: ref.watch(selectedProductStageProvider(key))
+final selectedProductStageProvider = Provider.family<ProductStageEntity?, String>((ref, key) {
+  final state = ref.watch(productDetailProvider(key));
+  return state.selectedStage;
+});
+
+/// Provider to check if product detail is loading
+/// Usage: ref.watch(isProductDetailLoadingProvider(key))
+final isProductDetailLoadingProvider = Provider.family<bool, String>((ref, key) {
+  final state = ref.watch(productDetailProvider(key));
+  return state.isLoading;
+});
+
+/// Provider to get product detail error
+/// Returns null if no error
+/// Usage: ref.watch(productDetailErrorProvider(key))
+final productDetailErrorProvider = Provider.family<String?, String>((ref, key) {
+  final state = ref.watch(productDetailProvider(key));
+  return state.error;
+});
+
 /// ========================================================================
 /// USAGE EXAMPLES
 /// ========================================================================

lib/core/router/app_router.dart

@@ -7,6 +7,7 @@ import '../../features/auth/di/auth_dependency_injection.dart';
 import '../../features/warehouse/presentation/pages/warehouse_selection_page.dart';
 import '../../features/operation/presentation/pages/operation_selection_page.dart';
 import '../../features/products/presentation/pages/products_page.dart';
+import '../../features/products/presentation/pages/product_detail_page.dart';
 import '../../features/warehouse/domain/entities/warehouse_entity.dart';
 import '../storage/secure_storage.dart';
 
@@ -121,6 +122,49 @@ class AppRouter {
           );
         },
       ),
+
+      /// Product Detail Route
+      /// Path: /product-detail
+      /// Takes warehouseId, productId, and warehouseName as extra parameter
+      /// Shows detailed information for a specific product
+      GoRoute(
+        path: '/product-detail',
+        name: 'product-detail',
+        builder: (context, state) {
+          final params = state.extra as Map<String, dynamic>?;
+
+          if (params == null) {
+            // If no params, redirect to warehouses
+            WidgetsBinding.instance.addPostFrameCallback((_) {
+              context.go('/warehouses');
+            });
+            return const _ErrorScreen(
+              message: 'Product detail parameters are required',
+            );
+          }
+
+          // Extract required parameters
+          final warehouseId = params['warehouseId'] as int?;
+          final productId = params['productId'] as int?;
+          final warehouseName = params['warehouseName'] as String?;
+
+          // Validate parameters
+          if (warehouseId == null || productId == null || warehouseName == null) {
+            WidgetsBinding.instance.addPostFrameCallback((_) {
+              context.go('/warehouses');
+            });
+            return const _ErrorScreen(
+              message: 'Invalid product detail parameters',
+            );
+          }
+
+          return ProductDetailPage(
+            warehouseId: warehouseId,
+            productId: productId,
+            warehouseName: warehouseName,
+          );
+        },
+      ),
     ],
 
     // ==================== Error Handling ====================
@@ -326,6 +370,26 @@ extension AppRouterExtension on BuildContext {
     );
   }
 
+  /// Navigate to product detail page
+  ///
+  /// [warehouseId] - ID of the warehouse
+  /// [productId] - ID of the product to view
+  /// [warehouseName] - Name of the warehouse (for display)
+  void goToProductDetail({
+    required int warehouseId,
+    required int productId,
+    required String warehouseName,
+  }) {
+    push(
+      '/product-detail',
+      extra: {
+        'warehouseId': warehouseId,
+        'productId': productId,
+        'warehouseName': warehouseName,
+      },
+    );
+  }
+
   /// Pop current route
   void goBack() => pop();
 }