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lib/features/products/data/datasources/products_local_datasource.dart

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+import 'dart:convert';
+import 'package:hive_ce/hive.dart';
+import '../models/product_model.dart';
+
+/// Abstract interface for products local data source
+abstract class ProductsLocalDataSource {
+  /// Get cached products for a specific warehouse and operation type
+  ///
+  /// [warehouseId] - The ID of the warehouse
+  /// [type] - The operation type ('import' or 'export')
+  ///
+  /// Returns List<ProductModel> from cache or empty list if not found
+  Future<List<ProductModel>> getCachedProducts(int warehouseId, String type);
+
+  /// Cache products for a specific warehouse and operation type
+  ///
+  /// [warehouseId] - The ID of the warehouse
+  /// [type] - The operation type ('import' or 'export')
+  /// [products] - List of products to cache
+  Future<void> cacheProducts(
+    int warehouseId,
+    String type,
+    List<ProductModel> products,
+  );
+
+  /// Clear all cached products
+  Future<void> clearCache();
+
+  /// Clear cached products for a specific warehouse and operation type
+  Future<void> clearCachedProducts(int warehouseId, String type);
+}
+
+/// Implementation of ProductsLocalDataSource using Hive
+class ProductsLocalDataSourceImpl implements ProductsLocalDataSource {
+  static const String _boxName = 'products_cache';
+  Box<String>? _box;
+
+  /// Initialize the Hive box
+  Future<void> init() async {
+    if (_box == null || !_box!.isOpen) {
+      _box = await Hive.openBox<String>(_boxName);
+    }
+  }
+
+  /// Generate cache key for warehouse and operation type
+  String _getCacheKey(int warehouseId, String type) {
+    return 'products_${warehouseId}_$type';
+  }
+
+  @override
+  Future<List<ProductModel>> getCachedProducts(
+    int warehouseId,
+    String type,
+  ) async {
+    await init();
+
+    final key = _getCacheKey(warehouseId, type);
+    final cachedData = _box?.get(key);
+
+    if (cachedData == null) {
+      return [];
+    }
+
+    try {
+      // Decode JSON string to list
+      final jsonList = jsonDecode(cachedData) as List;
+
+      // Convert JSON list to ProductModel list
+      return jsonList
+          .map((json) => ProductModel.fromJson(json as Map<String, dynamic>))
+          .toList();
+    } catch (e) {
+      // If parsing fails, return empty list
+      return [];
+    }
+  }
+
+  @override
+  Future<void> cacheProducts(
+    int warehouseId,
+    String type,
+    List<ProductModel> products,
+  ) async {
+    await init();
+
+    final key = _getCacheKey(warehouseId, type);
+
+    // Convert products to JSON list
+    final jsonList = products.map((product) => product.toJson()).toList();
+
+    // Encode to JSON string and save
+    final jsonString = jsonEncode(jsonList);
+    await _box?.put(key, jsonString);
+  }
+
+  @override
+  Future<void> clearCache() async {
+    await init();
+    await _box?.clear();
+  }
+
+  @override
+  Future<void> clearCachedProducts(int warehouseId, String type) async {
+    await init();
+
+    final key = _getCacheKey(warehouseId, type);
+    await _box?.delete(key);
+  }
+}