Added market place specific feature

kifi-app/lib/features/inventory/domain/product.dart

@@ -40,6 +40,12 @@ class Product {
   final double? makingCharges;
   final String? makingChargesType;
   final double? wastagePercentage;
+
+  final double? minStock;
+  final double? reorderLevel;
+  final double? reorderQuantity;
+  final bool trackInventory;
+
   final bool isActive;
   final List<int> imageIds;
   final double? currentStock;
@@ -80,24 +86,37 @@ class Product {
     this.makingCharges = 0.0,
     this.makingChargesType = 'FLAT',
     this.wastagePercentage = 0.0,
+    this.minStock = 0.0,
+    this.reorderLevel = 0.0,
+    this.reorderQuantity = 0.0,
+    this.trackInventory = true,
     this.isActive = true,
     this.imageIds = const [],
     this.currentStock = 0.0,
   });
 
+  bool get isOutOfStock => trackInventory && (currentStock == null || currentStock! <= 0);
+
+  bool get isLowStock {
+    final alertThreshold = (reorderLevel != null && reorderLevel! > 0)
+        ? reorderLevel!
+        : (minStock != null && minStock! > 0 ? minStock! : 0.0);
+    if (!trackInventory || alertThreshold <= 0) return false;
+    return currentStock != null && currentStock! > 0 && currentStock! <= alertThreshold;
+  }
+
   factory Product.fromJson(Map<String, dynamic> json) {
     return Product(
       id: json['id'],
       userId: json['userId'] ?? json['user_id'],
       categoryId: json['categoryId'] ?? json['category_id'],
       uomId: json['uomId'] ?? json['uom_id'],
-      name: json['name'],
+      name: json['name'] ?? '',
       hsnCode: json['hsnCode'] ?? json['hsn_code'],
       sku: json['sku'],
       barcode: json['barcode'],
       description: json['description'],
-      sellingPrice: (json['sellingPrice'] ?? json['selling_price'] as num?)
-          ?.toDouble(),
+      sellingPrice: (json['sellingPrice'] ?? json['selling_price'] as num?)?.toDouble(),
       gstRate: (json['gstRate'] ?? json['gst_rate'] as num?)?.toDouble(),
       dimensions: json['dimensions'],
       color: json['color'],
@@ -117,22 +136,16 @@ class Product {
       weightInG: (json['weightInG'] ?? json['weight_in_g'] as num?)?.toDouble(),
       packageWeightInG: (json['packageWeightInG'] ?? json['package_weight_in_g'] as num?)?.toDouble(),
       volumetricWeightInKg: (json['volumetricWeightInKg'] ?? json['volumetric_weight_in_kg'] as num?)?.toDouble(),
-      priceCalcRule:
-          json['priceCalcRule'] ?? json['price_calc_rule'] ?? 'MANUAL',
-      autoCalculatePrice:
-          json['autoCalculatePrice'] ?? json['auto_calculate_price'] ?? false,
-      purityFactor:
-          (json['purityFactor'] ?? json['purity_factor'] as num?)?.toDouble(),
-      makingCharges:
-          (json['makingCharges'] ?? json['making_charges'] as num?)
-              ?.toDouble() ??
-          0.0,
-      makingChargesType:
-          json['makingChargesType'] ?? json['making_charges_type'] ?? 'FLAT',
-      wastagePercentage:
-          (json['wastagePercentage'] ?? json['wastage_percentage'] as num?)
-              ?.toDouble() ??
-          0.0,
+      priceCalcRule: json['priceCalcRule'] ?? json['price_calc_rule'] ?? 'MANUAL',
+      autoCalculatePrice: json['autoCalculatePrice'] ?? json['auto_calculate_price'] ?? false,
+      purityFactor: (json['purityFactor'] ?? json['purity_factor'] as num?)?.toDouble(),
+      makingCharges: (json['makingCharges'] ?? json['making_charges'] as num?)?.toDouble() ?? 0.0,
+      makingChargesType: json['makingChargesType'] ?? json['making_charges_type'] ?? 'FLAT',
+      wastagePercentage: (json['wastagePercentage'] ?? json['wastage_percentage'] as num?)?.toDouble() ?? 0.0,
+      minStock: (json['minStock'] ?? json['min_stock'] as num?)?.toDouble() ?? 0.0,
+      reorderLevel: (json['reorderLevel'] ?? json['reorder_level'] as num?)?.toDouble() ?? 0.0,
+      reorderQuantity: (json['reorderQuantity'] ?? json['reorder_quantity'] as num?)?.toDouble() ?? 0.0,
+      trackInventory: json['trackInventory'] ?? json['track_inventory'] ?? true,
       isActive: json['isActive'] ?? json['is_active'] ?? true,
       imageIds: json['images'] != null
           ? (json['images'] as List).map((i) {
@@ -144,9 +157,7 @@ class Product {
               return 0;
             }).where((id) => id > 0).toList()
           : [],
-      currentStock:
-          (json['currentStock'] ?? json['current_stock'] as num?)?.toDouble() ??
-          0.0,
+      currentStock: (json['currentStock'] ?? json['current_stock'] as num?)?.toDouble() ?? 0.0,
     );
   }
 
@@ -187,6 +198,10 @@ class Product {
       'makingCharges': makingCharges,
       'makingChargesType': makingChargesType,
       'wastagePercentage': wastagePercentage,
+      'minStock': minStock,
+      'reorderLevel': reorderLevel,
+      'reorderQuantity': reorderQuantity,
+      'trackInventory': trackInventory,
       'isActive': isActive,
     };
   }