fill

lib/features/warehouse/domain/entities/warehouse_entity.dart

@@ -0,0 +1,61 @@
+import 'package:equatable/equatable.dart';
+
+/// Warehouse domain entity
+/// Pure business model with no dependencies on data layer
+class WarehouseEntity extends Equatable {
+  final int id;
+  final String name;
+  final String code;
+  final String? description;
+  final bool isNGWareHouse;
+  final int totalCount;
+
+  const WarehouseEntity({
+    required this.id,
+    required this.name,
+    required this.code,
+    this.description,
+    required this.isNGWareHouse,
+    required this.totalCount,
+  });
+
+  @override
+  List<Object?> get props => [
+        id,
+        name,
+        code,
+        description,
+        isNGWareHouse,
+        totalCount,
+      ];
+
+  @override
+  String toString() {
+    return 'WarehouseEntity(id: $id, name: $name, code: $code, totalCount: $totalCount)';
+  }
+
+  /// Check if warehouse has items
+  bool get hasItems => totalCount > 0;
+
+  /// Check if this is an NG (Not Good/Defect) warehouse
+  bool get isNGType => isNGWareHouse;
+
+  /// Create a copy with modified fields
+  WarehouseEntity copyWith({
+    int? id,
+    String? name,
+    String? code,
+    String? description,
+    bool? isNGWareHouse,
+    int? totalCount,
+  }) {
+    return WarehouseEntity(
+      id: id ?? this.id,
+      name: name ?? this.name,
+      code: code ?? this.code,
+      description: description ?? this.description,
+      isNGWareHouse: isNGWareHouse ?? this.isNGWareHouse,
+      totalCount: totalCount ?? this.totalCount,
+    );
+  }
+}

lib/features/warehouse/domain/repositories/warehouse_repository.dart

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+import 'package:dartz/dartz.dart';
+import '../../../../core/errors/failures.dart';
+import '../entities/warehouse_entity.dart';
+
+/// Abstract repository interface for warehouse operations
+/// Defines the contract for warehouse data operations
+/// Implementations should handle data sources and convert exceptions to failures
+abstract class WarehouseRepository {
+  /// Get all warehouses from the remote data source
+  ///
+  /// Returns [Either<Failure, List<WarehouseEntity>>]
+  /// - Right: List of warehouses on success
+  /// - Left: Failure object with error details
+  Future<Either<Failure, List<WarehouseEntity>>> getWarehouses();
+}

lib/features/warehouse/domain/usecases/get_warehouses_usecase.dart

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+import 'package:dartz/dartz.dart';
+import '../../../../core/errors/failures.dart';
+import '../entities/warehouse_entity.dart';
+import '../repositories/warehouse_repository.dart';
+
+/// Use case for getting all warehouses
+/// Encapsulates the business logic for fetching warehouses
+///
+/// Usage:
+/// ```dart
+/// final useCase = GetWarehousesUseCase(repository);
+/// final result = await useCase();
+///
+/// result.fold(
+///   (failure) => print('Error: ${failure.message}'),
+///   (warehouses) => print('Loaded ${warehouses.length} warehouses'),
+/// );
+/// ```
+class GetWarehousesUseCase {
+  final WarehouseRepository repository;
+
+  GetWarehousesUseCase(this.repository);
+
+  /// Execute the use case
+  ///
+  /// Returns [Either<Failure, List<WarehouseEntity>>]
+  /// - Right: List of warehouses on success
+  /// - Left: Failure object with error details
+  Future<Either<Failure, List<WarehouseEntity>>> call() async {
+    return await repository.getWarehouses();
+  }
+}