feat: dukung penjualan produk per timbangan

Produk kini punya cara jual `unit` (cacah) atau `weight` (timbangan),
mengikuti kontrak backend di docs/integration-weight-based-products.md.

- tipe SellBy, domain/infrastructure unit baru, dan endpoint /api/v1/units
- dialog input berat saat produk timbangan ditambahkan ke keranjang
- tiap penimbangan jadi baris keranjang sendiri; total baris dihitung
  berat x harga satuan, sedangkan produk cacah tetap digabung
- request ke backend mengirim quantity 1 dan membawa berat
- migrasi DB v3: kolom sell_by, unit_id, unit_name, unit_abbreviation
  di tabel products supaya satuan tetap tampil saat offline
- tampilan keranjang, struk, split bill, void, dan refund memakai berat
- test/weight_based_products_test.dart menutup perilaku di atas (9 test)

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

lib/infrastructure/order/datasources/remote_data_provider.dart

@@ -55,6 +55,12 @@ class OrderRemoteDataProvider {
       );
 
       if (response.data['success'] == false) {
+        // Pesan validasi backend menyebut nama produk, jadi diteruskan apa
+        // adanya ke kasir alih-alih diganti pesan generik.
+        final cause = extractApiErrorCause(response.data);
+        if (cause != null) {
+          return DC.error(OrderFailure.dynamicErrorMessage(cause));
+        }
         return DC.error(const OrderFailure.unexpectedError());
       }
 
@@ -77,6 +83,12 @@ class OrderRemoteDataProvider {
       );
 
       if (response.data['success'] == false) {
+        // Pesan validasi backend menyebut nama produk, jadi diteruskan apa
+        // adanya ke kasir alih-alih diganti pesan generik.
+        final cause = extractApiErrorCause(response.data);
+        if (cause != null) {
+          return DC.error(OrderFailure.dynamicErrorMessage(cause));
+        }
         return DC.error(const OrderFailure.unexpectedError());
       }
 
@@ -102,6 +114,12 @@ class OrderRemoteDataProvider {
       );
 
       if (response.data['success'] == false) {
+        // Pesan validasi backend menyebut nama produk, jadi diteruskan apa
+        // adanya ke kasir alih-alih diganti pesan generik.
+        final cause = extractApiErrorCause(response.data);
+        if (cause != null) {
+          return DC.error(OrderFailure.dynamicErrorMessage(cause));
+        }
         return DC.error(const OrderFailure.unexpectedError());
       }
 
@@ -128,6 +146,12 @@ class OrderRemoteDataProvider {
       );
 
       if (response.data['success'] == false) {
+        // Pesan validasi backend menyebut nama produk, jadi diteruskan apa
+        // adanya ke kasir alih-alih diganti pesan generik.
+        final cause = extractApiErrorCause(response.data);
+        if (cause != null) {
+          return DC.error(OrderFailure.dynamicErrorMessage(cause));
+        }
         return DC.error(const OrderFailure.unexpectedError());
       } else {
         final order = OrderDto.fromJson(
@@ -171,6 +195,12 @@ class OrderRemoteDataProvider {
       );
 
       if (response.data['success'] == false) {
+        // Pesan validasi backend menyebut nama produk, jadi diteruskan apa
+        // adanya ke kasir alih-alih diganti pesan generik.
+        final cause = extractApiErrorCause(response.data);
+        if (cause != null) {
+          return DC.error(OrderFailure.dynamicErrorMessage(cause));
+        }
         return DC.error(const OrderFailure.unexpectedError());
       }
 
@@ -201,6 +231,12 @@ class OrderRemoteDataProvider {
       );
 
       if (response.data['success'] == false) {
+        // Pesan validasi backend menyebut nama produk, jadi diteruskan apa
+        // adanya ke kasir alih-alih diganti pesan generik.
+        final cause = extractApiErrorCause(response.data);
+        if (cause != null) {
+          return DC.error(OrderFailure.dynamicErrorMessage(cause));
+        }
         return DC.error(const OrderFailure.unexpectedError());
       }
 
@@ -239,6 +275,12 @@ class OrderRemoteDataProvider {
       );
 
       if (response.data['success'] == false) {
+        // Pesan validasi backend menyebut nama produk, jadi diteruskan apa
+        // adanya ke kasir alih-alih diganti pesan generik.
+        final cause = extractApiErrorCause(response.data);
+        if (cause != null) {
+          return DC.error(OrderFailure.dynamicErrorMessage(cause));
+        }
         return DC.error(const OrderFailure.unexpectedError());
       }
 
@@ -262,6 +304,12 @@ class OrderRemoteDataProvider {
       );
 
       if (response.data['success'] == false) {
+        // Pesan validasi backend menyebut nama produk, jadi diteruskan apa
+        // adanya ke kasir alih-alih diganti pesan generik.
+        final cause = extractApiErrorCause(response.data);
+        if (cause != null) {
+          return DC.error(OrderFailure.dynamicErrorMessage(cause));
+        }
         return DC.error(const OrderFailure.unexpectedError());
       }
 
@@ -290,6 +338,12 @@ class OrderRemoteDataProvider {
       );
 
       if (response.data['success'] == false) {
+        // Pesan validasi backend menyebut nama produk, jadi diteruskan apa
+        // adanya ke kasir alih-alih diganti pesan generik.
+        final cause = extractApiErrorCause(response.data);
+        if (cause != null) {
+          return DC.error(OrderFailure.dynamicErrorMessage(cause));
+        }
         return DC.error(const OrderFailure.unexpectedError());
       }
 

lib/infrastructure/order/dtos/add_item_order_request_dto.dart

@@ -10,6 +10,7 @@ class AddItemOrderRequestDto with _$AddItemOrderRequestDto {
     @JsonKey(name: 'quantity') int? quantity,
     @JsonKey(name: 'unit_price') int? unitPrice,
     @JsonKey(name: 'notes') String? notes,
+    @JsonKey(name: 'weight') double? weight,
   }) = _AddItemOrderRequestDto;
 
   factory AddItemOrderRequestDto.fromJson(Map<String, dynamic> json) =>
@@ -21,6 +22,7 @@ class AddItemOrderRequestDto with _$AddItemOrderRequestDto {
     quantity: quantity ?? 0,
     unitPrice: unitPrice ?? 0,
     notes: notes ?? '',
+    weight: weight,
   );
 
   factory AddItemOrderRequestDto.fromDomain(
@@ -31,6 +33,7 @@ class AddItemOrderRequestDto with _$AddItemOrderRequestDto {
     quantity: addItemOrderRequest.quantity,
     unitPrice: addItemOrderRequest.unitPrice,
     notes: addItemOrderRequest.notes,
+    weight: addItemOrderRequest.weight,
   );
 
   Map<String, dynamic> toRequest() {
@@ -45,6 +48,11 @@ class AddItemOrderRequestDto with _$AddItemOrderRequestDto {
       data['product_variant_id'] = productvariantId;
     }
 
+    // Produk satuan ditolak backend bila membawa berat.
+    if (weight != null) {
+      data['weight'] = weight;
+    }
+
     return data;
   }
 }

lib/infrastructure/order/dtos/order_dto.dart

@@ -118,6 +118,10 @@ class OrderItemDto with _$OrderItemDto {
     @JsonKey(name: "paid_quantity") int? paidQuantity,
     @JsonKey(name: "category_id") String? categoryId,
     @JsonKey(name: "category_name") String? categoryName,
+    @JsonKey(name: "weight") double? weight,
+    @JsonKey(name: "unit_id") String? unitId,
+    @JsonKey(name: "unit_name") String? unitName,
+    @JsonKey(name: "unit_abbreviation") String? unitAbbreviation,
   }) = _OrderItemDto;
 
   factory OrderItemDto.fromJson(Map<String, dynamic> json) =>
@@ -144,6 +148,10 @@ class OrderItemDto with _$OrderItemDto {
     paidQuantity: paidQuantity ?? 0,
     categoryId: categoryId ?? '',
     categoryName: categoryName ?? '',
+    weight: weight,
+    unitId: unitId ?? '',
+    unitName: unitName ?? '',
+    unitAbbreviation: unitAbbreviation ?? '',
   );
 
   factory OrderItemDto.fromDomain(OrderItem orderItem) => OrderItemDto(
@@ -166,5 +174,9 @@ class OrderItemDto with _$OrderItemDto {
     paidQuantity: orderItem.paidQuantity,
     categoryId: orderItem.categoryId,
     categoryName: orderItem.categoryName,
+    weight: orderItem.weight,
+    unitId: orderItem.unitId,
+    unitName: orderItem.unitName,
+    unitAbbreviation: orderItem.unitAbbreviation,
   );
 }

lib/infrastructure/order/dtos/order_request_dto.dart

@@ -75,6 +75,7 @@ class OrderItemRequestDto with _$OrderItemRequestDto {
     @JsonKey(name: "quantity") int? quantity,
     @JsonKey(name: "unit_price") int? unitPrice,
     @JsonKey(name: "notes") String? notes,
+    @JsonKey(name: "weight") double? weight,
   }) = _OrderItemRequestDto;
 
   factory OrderItemRequestDto.fromJson(Map<String, dynamic> json) =>
@@ -87,6 +88,7 @@ class OrderItemRequestDto with _$OrderItemRequestDto {
     quantity: quantity ?? 0,
     unitPrice: unitPrice ?? 0,
     notes: notes ?? '',
+    weight: weight,
   );
 
   factory OrderItemRequestDto.fromDomain(OrderItemRequest request) =>
@@ -96,6 +98,7 @@ class OrderItemRequestDto with _$OrderItemRequestDto {
         quantity: request.quantity,
         unitPrice: request.unitPrice,
         notes: request.notes,
+        weight: request.weight,
       );
 
   Map<String, dynamic> toRequest() {
@@ -110,6 +113,12 @@ class OrderItemRequestDto with _$OrderItemRequestDto {
       data["product_variant_id"] = productVariantId;
     }
 
+    // Produk satuan ditolak backend bila membawa berat, jadi field ini hanya
+    // ikut saat memang ada hasil timbangan.
+    if (weight != null) {
+      data["weight"] = weight;
+    }
+
     return data;
   }
 }

lib/infrastructure/order/order_dtos.freezed.dart

@@ -1177,6 +1177,14 @@ mixin _$OrderItemDto {
   String? get categoryId => throw _privateConstructorUsedError;
   @JsonKey(name: "category_name")
   String? get categoryName => throw _privateConstructorUsedError;
+  @JsonKey(name: "weight")
+  double? get weight => throw _privateConstructorUsedError;
+  @JsonKey(name: "unit_id")
+  String? get unitId => throw _privateConstructorUsedError;
+  @JsonKey(name: "unit_name")
+  String? get unitName => throw _privateConstructorUsedError;
+  @JsonKey(name: "unit_abbreviation")
+  String? get unitAbbreviation => throw _privateConstructorUsedError;
 
   /// Serializes this OrderItemDto to a JSON map.
   Map<String, dynamic> toJson() => throw _privateConstructorUsedError;
@@ -1215,6 +1223,10 @@ abstract class $OrderItemDtoCopyWith<$Res> {
     @JsonKey(name: "paid_quantity") int? paidQuantity,
     @JsonKey(name: "category_id") String? categoryId,
     @JsonKey(name: "category_name") String? categoryName,
+    @JsonKey(name: "weight") double? weight,
+    @JsonKey(name: "unit_id") String? unitId,
+    @JsonKey(name: "unit_name") String? unitName,
+    @JsonKey(name: "unit_abbreviation") String? unitAbbreviation,
   });
 }
 
@@ -1252,6 +1264,10 @@ class _$OrderItemDtoCopyWithImpl<$Res, $Val extends OrderItemDto>
     Object? paidQuantity = freezed,
     Object? categoryId = freezed,
     Object? categoryName = freezed,
+    Object? weight = freezed,
+    Object? unitId = freezed,
+    Object? unitName = freezed,
+    Object? unitAbbreviation = freezed,
   }) {
     return _then(
       _value.copyWith(
@@ -1331,6 +1347,22 @@ class _$OrderItemDtoCopyWithImpl<$Res, $Val extends OrderItemDto>
                 ? _value.categoryName
                 : categoryName // ignore: cast_nullable_to_non_nullable
                       as String?,
+            weight: freezed == weight
+                ? _value.weight
+                : weight // ignore: cast_nullable_to_non_nullable
+                      as double?,
+            unitId: freezed == unitId
+                ? _value.unitId
+                : unitId // ignore: cast_nullable_to_non_nullable
+                      as String?,
+            unitName: freezed == unitName
+                ? _value.unitName
+                : unitName // ignore: cast_nullable_to_non_nullable
+                      as String?,
+            unitAbbreviation: freezed == unitAbbreviation
+                ? _value.unitAbbreviation
+                : unitAbbreviation // ignore: cast_nullable_to_non_nullable
+                      as String?,
           )
           as $Val,
     );
@@ -1366,6 +1398,10 @@ abstract class _$$OrderItemDtoImplCopyWith<$Res>
     @JsonKey(name: "paid_quantity") int? paidQuantity,
     @JsonKey(name: "category_id") String? categoryId,
     @JsonKey(name: "category_name") String? categoryName,
+    @JsonKey(name: "weight") double? weight,
+    @JsonKey(name: "unit_id") String? unitId,
+    @JsonKey(name: "unit_name") String? unitName,
+    @JsonKey(name: "unit_abbreviation") String? unitAbbreviation,
   });
 }
 
@@ -1402,6 +1438,10 @@ class __$$OrderItemDtoImplCopyWithImpl<$Res>
     Object? paidQuantity = freezed,
     Object? categoryId = freezed,
     Object? categoryName = freezed,
+    Object? weight = freezed,
+    Object? unitId = freezed,
+    Object? unitName = freezed,
+    Object? unitAbbreviation = freezed,
   }) {
     return _then(
       _$OrderItemDtoImpl(
@@ -1481,6 +1521,22 @@ class __$$OrderItemDtoImplCopyWithImpl<$Res>
             ? _value.categoryName
             : categoryName // ignore: cast_nullable_to_non_nullable
                   as String?,
+        weight: freezed == weight
+            ? _value.weight
+            : weight // ignore: cast_nullable_to_non_nullable
+                  as double?,
+        unitId: freezed == unitId
+            ? _value.unitId
+            : unitId // ignore: cast_nullable_to_non_nullable
+                  as String?,
+        unitName: freezed == unitName
+            ? _value.unitName
+            : unitName // ignore: cast_nullable_to_non_nullable
+                  as String?,
+        unitAbbreviation: freezed == unitAbbreviation
+            ? _value.unitAbbreviation
+            : unitAbbreviation // ignore: cast_nullable_to_non_nullable
+                  as String?,
       ),
     );
   }
@@ -1509,6 +1565,10 @@ class _$OrderItemDtoImpl extends _OrderItemDto {
     @JsonKey(name: "paid_quantity") this.paidQuantity,
     @JsonKey(name: "category_id") this.categoryId,
     @JsonKey(name: "category_name") this.categoryName,
+    @JsonKey(name: "weight") this.weight,
+    @JsonKey(name: "unit_id") this.unitId,
+    @JsonKey(name: "unit_name") this.unitName,
+    @JsonKey(name: "unit_abbreviation") this.unitAbbreviation,
   }) : _modifiers = modifiers,
        super._();
 
@@ -1580,10 +1640,22 @@ class _$OrderItemDtoImpl extends _OrderItemDto {
   @override
   @JsonKey(name: "category_name")
   final String? categoryName;
+  @override
+  @JsonKey(name: "weight")
+  final double? weight;
+  @override
+  @JsonKey(name: "unit_id")
+  final String? unitId;
+  @override
+  @JsonKey(name: "unit_name")
+  final String? unitName;
+  @override
+  @JsonKey(name: "unit_abbreviation")
+  final String? unitAbbreviation;
 
   @override
   String toString() {
-    return 'OrderItemDto(id: $id, orderId: $orderId, productId: $productId, productName: $productName, productVariantId: $productVariantId, productVariantName: $productVariantName, quantity: $quantity, unitPrice: $unitPrice, totalPrice: $totalPrice, modifiers: $modifiers, notes: $notes, status: $status, createdAt: $createdAt, updatedAt: $updatedAt, printerType: $printerType, printToChecker: $printToChecker, paidQuantity: $paidQuantity, categoryId: $categoryId, categoryName: $categoryName)';
+    return 'OrderItemDto(id: $id, orderId: $orderId, productId: $productId, productName: $productName, productVariantId: $productVariantId, productVariantName: $productVariantName, quantity: $quantity, unitPrice: $unitPrice, totalPrice: $totalPrice, modifiers: $modifiers, notes: $notes, status: $status, createdAt: $createdAt, updatedAt: $updatedAt, printerType: $printerType, printToChecker: $printToChecker, paidQuantity: $paidQuantity, categoryId: $categoryId, categoryName: $categoryName, weight: $weight, unitId: $unitId, unitName: $unitName, unitAbbreviation: $unitAbbreviation)';
   }
 
   @override
@@ -1626,7 +1698,13 @@ class _$OrderItemDtoImpl extends _OrderItemDto {
             (identical(other.categoryId, categoryId) ||
                 other.categoryId == categoryId) &&
             (identical(other.categoryName, categoryName) ||
-                other.categoryName == categoryName));
+                other.categoryName == categoryName) &&
+            (identical(other.weight, weight) || other.weight == weight) &&
+            (identical(other.unitId, unitId) || other.unitId == unitId) &&
+            (identical(other.unitName, unitName) ||
+                other.unitName == unitName) &&
+            (identical(other.unitAbbreviation, unitAbbreviation) ||
+                other.unitAbbreviation == unitAbbreviation));
   }
 
   @JsonKey(includeFromJson: false, includeToJson: false)
@@ -1652,6 +1730,10 @@ class _$OrderItemDtoImpl extends _OrderItemDto {
     paidQuantity,
     categoryId,
     categoryName,
+    weight,
+    unitId,
+    unitName,
+    unitAbbreviation,
   ]);
 
   /// Create a copy of OrderItemDto
@@ -1689,6 +1771,10 @@ abstract class _OrderItemDto extends OrderItemDto {
     @JsonKey(name: "paid_quantity") final int? paidQuantity,
     @JsonKey(name: "category_id") final String? categoryId,
     @JsonKey(name: "category_name") final String? categoryName,
+    @JsonKey(name: "weight") final double? weight,
+    @JsonKey(name: "unit_id") final String? unitId,
+    @JsonKey(name: "unit_name") final String? unitName,
+    @JsonKey(name: "unit_abbreviation") final String? unitAbbreviation,
   }) = _$OrderItemDtoImpl;
   const _OrderItemDto._() : super._();
 
@@ -1752,6 +1838,18 @@ abstract class _OrderItemDto extends OrderItemDto {
   @override
   @JsonKey(name: "category_name")
   String? get categoryName;
+  @override
+  @JsonKey(name: "weight")
+  double? get weight;
+  @override
+  @JsonKey(name: "unit_id")
+  String? get unitId;
+  @override
+  @JsonKey(name: "unit_name")
+  String? get unitName;
+  @override
+  @JsonKey(name: "unit_abbreviation")
+  String? get unitAbbreviation;
 
   /// Create a copy of OrderItemDto
   /// with the given fields replaced by the non-null parameter values.
@@ -2136,6 +2234,8 @@ mixin _$OrderItemRequestDto {
   int? get unitPrice => throw _privateConstructorUsedError;
   @JsonKey(name: "notes")
   String? get notes => throw _privateConstructorUsedError;
+  @JsonKey(name: "weight")
+  double? get weight => throw _privateConstructorUsedError;
 
   /// Serializes this OrderItemRequestDto to a JSON map.
   Map<String, dynamic> toJson() => throw _privateConstructorUsedError;
@@ -2160,6 +2260,7 @@ abstract class $OrderItemRequestDtoCopyWith<$Res> {
     @JsonKey(name: "quantity") int? quantity,
     @JsonKey(name: "unit_price") int? unitPrice,
     @JsonKey(name: "notes") String? notes,
+    @JsonKey(name: "weight") double? weight,
   });
 }
 
@@ -2183,6 +2284,7 @@ class _$OrderItemRequestDtoCopyWithImpl<$Res, $Val extends OrderItemRequestDto>
     Object? quantity = freezed,
     Object? unitPrice = freezed,
     Object? notes = freezed,
+    Object? weight = freezed,
   }) {
     return _then(
       _value.copyWith(
@@ -2206,6 +2308,10 @@ class _$OrderItemRequestDtoCopyWithImpl<$Res, $Val extends OrderItemRequestDto>
                 ? _value.notes
                 : notes // ignore: cast_nullable_to_non_nullable
                       as String?,
+            weight: freezed == weight
+                ? _value.weight
+                : weight // ignore: cast_nullable_to_non_nullable
+                      as double?,
           )
           as $Val,
     );
@@ -2227,6 +2333,7 @@ abstract class _$$OrderItemRequestDtoImplCopyWith<$Res>
     @JsonKey(name: "quantity") int? quantity,
     @JsonKey(name: "unit_price") int? unitPrice,
     @JsonKey(name: "notes") String? notes,
+    @JsonKey(name: "weight") double? weight,
   });
 }
 
@@ -2249,6 +2356,7 @@ class __$$OrderItemRequestDtoImplCopyWithImpl<$Res>
     Object? quantity = freezed,
     Object? unitPrice = freezed,
     Object? notes = freezed,
+    Object? weight = freezed,
   }) {
     return _then(
       _$OrderItemRequestDtoImpl(
@@ -2272,6 +2380,10 @@ class __$$OrderItemRequestDtoImplCopyWithImpl<$Res>
             ? _value.notes
             : notes // ignore: cast_nullable_to_non_nullable
                   as String?,
+        weight: freezed == weight
+            ? _value.weight
+            : weight // ignore: cast_nullable_to_non_nullable
+                  as double?,
       ),
     );
   }
@@ -2286,6 +2398,7 @@ class _$OrderItemRequestDtoImpl extends _OrderItemRequestDto {
     @JsonKey(name: "quantity") this.quantity,
     @JsonKey(name: "unit_price") this.unitPrice,
     @JsonKey(name: "notes") this.notes,
+    @JsonKey(name: "weight") this.weight,
   }) : super._();
 
   factory _$OrderItemRequestDtoImpl.fromJson(Map<String, dynamic> json) =>
@@ -2306,10 +2419,13 @@ class _$OrderItemRequestDtoImpl extends _OrderItemRequestDto {
   @override
   @JsonKey(name: "notes")
   final String? notes;
+  @override
+  @JsonKey(name: "weight")
+  final double? weight;
 
   @override
   String toString() {
-    return 'OrderItemRequestDto(productId: $productId, productVariantId: $productVariantId, quantity: $quantity, unitPrice: $unitPrice, notes: $notes)';
+    return 'OrderItemRequestDto(productId: $productId, productVariantId: $productVariantId, quantity: $quantity, unitPrice: $unitPrice, notes: $notes, weight: $weight)';
   }
 
   @override
@@ -2325,7 +2441,8 @@ class _$OrderItemRequestDtoImpl extends _OrderItemRequestDto {
                 other.quantity == quantity) &&
             (identical(other.unitPrice, unitPrice) ||
                 other.unitPrice == unitPrice) &&
-            (identical(other.notes, notes) || other.notes == notes));
+            (identical(other.notes, notes) || other.notes == notes) &&
+            (identical(other.weight, weight) || other.weight == weight));
   }
 
   @JsonKey(includeFromJson: false, includeToJson: false)
@@ -2337,6 +2454,7 @@ class _$OrderItemRequestDtoImpl extends _OrderItemRequestDto {
     quantity,
     unitPrice,
     notes,
+    weight,
   );
 
   /// Create a copy of OrderItemRequestDto
@@ -2363,6 +2481,7 @@ abstract class _OrderItemRequestDto extends OrderItemRequestDto {
     @JsonKey(name: "quantity") final int? quantity,
     @JsonKey(name: "unit_price") final int? unitPrice,
     @JsonKey(name: "notes") final String? notes,
+    @JsonKey(name: "weight") final double? weight,
   }) = _$OrderItemRequestDtoImpl;
   const _OrderItemRequestDto._() : super._();
 
@@ -2384,6 +2503,9 @@ abstract class _OrderItemRequestDto extends OrderItemRequestDto {
   @override
   @JsonKey(name: "notes")
   String? get notes;
+  @override
+  @JsonKey(name: "weight")
+  double? get weight;
 
   /// Create a copy of OrderItemRequestDto
   /// with the given fields replaced by the non-null parameter values.
@@ -4025,6 +4147,8 @@ mixin _$AddItemOrderRequestDto {
   int? get unitPrice => throw _privateConstructorUsedError;
   @JsonKey(name: 'notes')
   String? get notes => throw _privateConstructorUsedError;
+  @JsonKey(name: 'weight')
+  double? get weight => throw _privateConstructorUsedError;
 
   /// Serializes this AddItemOrderRequestDto to a JSON map.
   Map<String, dynamic> toJson() => throw _privateConstructorUsedError;
@@ -4049,6 +4173,7 @@ abstract class $AddItemOrderRequestDtoCopyWith<$Res> {
     @JsonKey(name: 'quantity') int? quantity,
     @JsonKey(name: 'unit_price') int? unitPrice,
     @JsonKey(name: 'notes') String? notes,
+    @JsonKey(name: 'weight') double? weight,
   });
 }
 
@@ -4075,6 +4200,7 @@ class _$AddItemOrderRequestDtoCopyWithImpl<
     Object? quantity = freezed,
     Object? unitPrice = freezed,
     Object? notes = freezed,
+    Object? weight = freezed,
   }) {
     return _then(
       _value.copyWith(
@@ -4098,6 +4224,10 @@ class _$AddItemOrderRequestDtoCopyWithImpl<
                 ? _value.notes
                 : notes // ignore: cast_nullable_to_non_nullable
                       as String?,
+            weight: freezed == weight
+                ? _value.weight
+                : weight // ignore: cast_nullable_to_non_nullable
+                      as double?,
           )
           as $Val,
     );
@@ -4119,6 +4249,7 @@ abstract class _$$AddItemOrderRequestDtoImplCopyWith<$Res>
     @JsonKey(name: 'quantity') int? quantity,
     @JsonKey(name: 'unit_price') int? unitPrice,
     @JsonKey(name: 'notes') String? notes,
+    @JsonKey(name: 'weight') double? weight,
   });
 }
 
@@ -4142,6 +4273,7 @@ class __$$AddItemOrderRequestDtoImplCopyWithImpl<$Res>
     Object? quantity = freezed,
     Object? unitPrice = freezed,
     Object? notes = freezed,
+    Object? weight = freezed,
   }) {
     return _then(
       _$AddItemOrderRequestDtoImpl(
@@ -4165,6 +4297,10 @@ class __$$AddItemOrderRequestDtoImplCopyWithImpl<$Res>
             ? _value.notes
             : notes // ignore: cast_nullable_to_non_nullable
                   as String?,
+        weight: freezed == weight
+            ? _value.weight
+            : weight // ignore: cast_nullable_to_non_nullable
+                  as double?,
       ),
     );
   }
@@ -4179,6 +4315,7 @@ class _$AddItemOrderRequestDtoImpl extends _AddItemOrderRequestDto {
     @JsonKey(name: 'quantity') this.quantity,
     @JsonKey(name: 'unit_price') this.unitPrice,
     @JsonKey(name: 'notes') this.notes,
+    @JsonKey(name: 'weight') this.weight,
   }) : super._();
 
   factory _$AddItemOrderRequestDtoImpl.fromJson(Map<String, dynamic> json) =>
@@ -4199,10 +4336,13 @@ class _$AddItemOrderRequestDtoImpl extends _AddItemOrderRequestDto {
   @override
   @JsonKey(name: 'notes')
   final String? notes;
+  @override
+  @JsonKey(name: 'weight')
+  final double? weight;
 
   @override
   String toString() {
-    return 'AddItemOrderRequestDto(productId: $productId, productvariantId: $productvariantId, quantity: $quantity, unitPrice: $unitPrice, notes: $notes)';
+    return 'AddItemOrderRequestDto(productId: $productId, productvariantId: $productvariantId, quantity: $quantity, unitPrice: $unitPrice, notes: $notes, weight: $weight)';
   }
 
   @override
@@ -4218,7 +4358,8 @@ class _$AddItemOrderRequestDtoImpl extends _AddItemOrderRequestDto {
                 other.quantity == quantity) &&
             (identical(other.unitPrice, unitPrice) ||
                 other.unitPrice == unitPrice) &&
-            (identical(other.notes, notes) || other.notes == notes));
+            (identical(other.notes, notes) || other.notes == notes) &&
+            (identical(other.weight, weight) || other.weight == weight));
   }
 
   @JsonKey(includeFromJson: false, includeToJson: false)
@@ -4230,6 +4371,7 @@ class _$AddItemOrderRequestDtoImpl extends _AddItemOrderRequestDto {
     quantity,
     unitPrice,
     notes,
+    weight,
   );
 
   /// Create a copy of AddItemOrderRequestDto
@@ -4257,6 +4399,7 @@ abstract class _AddItemOrderRequestDto extends AddItemOrderRequestDto {
     @JsonKey(name: 'quantity') final int? quantity,
     @JsonKey(name: 'unit_price') final int? unitPrice,
     @JsonKey(name: 'notes') final String? notes,
+    @JsonKey(name: 'weight') final double? weight,
   }) = _$AddItemOrderRequestDtoImpl;
   const _AddItemOrderRequestDto._() : super._();
 
@@ -4278,6 +4421,9 @@ abstract class _AddItemOrderRequestDto extends AddItemOrderRequestDto {
   @override
   @JsonKey(name: 'notes')
   String? get notes;
+  @override
+  @JsonKey(name: 'weight')
+  double? get weight;
 
   /// Create a copy of AddItemOrderRequestDto
   /// with the given fields replaced by the non-null parameter values.

lib/infrastructure/order/order_dtos.g.dart

@@ -113,6 +113,10 @@ _$OrderItemDtoImpl _$$OrderItemDtoImplFromJson(Map<String, dynamic> json) =>
       paidQuantity: (json['paid_quantity'] as num?)?.toInt(),
       categoryId: json['category_id'] as String?,
       categoryName: json['category_name'] as String?,
+      weight: (json['weight'] as num?)?.toDouble(),
+      unitId: json['unit_id'] as String?,
+      unitName: json['unit_name'] as String?,
+      unitAbbreviation: json['unit_abbreviation'] as String?,
     );
 
 Map<String, dynamic> _$$OrderItemDtoImplToJson(_$OrderItemDtoImpl instance) =>
@@ -136,6 +140,10 @@ Map<String, dynamic> _$$OrderItemDtoImplToJson(_$OrderItemDtoImpl instance) =>
       'paid_quantity': instance.paidQuantity,
       'category_id': instance.categoryId,
       'category_name': instance.categoryName,
+      'weight': instance.weight,
+      'unit_id': instance.unitId,
+      'unit_name': instance.unitName,
+      'unit_abbreviation': instance.unitAbbreviation,
     };
 
 _$OrderRequestDtoImpl _$$OrderRequestDtoImplFromJson(
@@ -174,6 +182,7 @@ _$OrderItemRequestDtoImpl _$$OrderItemRequestDtoImplFromJson(
   quantity: (json['quantity'] as num?)?.toInt(),
   unitPrice: (json['unit_price'] as num?)?.toInt(),
   notes: json['notes'] as String?,
+  weight: (json['weight'] as num?)?.toDouble(),
 );
 
 Map<String, dynamic> _$$OrderItemRequestDtoImplToJson(
@@ -184,6 +193,7 @@ Map<String, dynamic> _$$OrderItemRequestDtoImplToJson(
   'quantity': instance.quantity,
   'unit_price': instance.unitPrice,
   'notes': instance.notes,
+  'weight': instance.weight,
 };
 
 _$PaymentRequestDtoImpl _$$PaymentRequestDtoImplFromJson(
@@ -317,6 +327,7 @@ _$AddItemOrderRequestDtoImpl _$$AddItemOrderRequestDtoImplFromJson(
   quantity: (json['quantity'] as num?)?.toInt(),
   unitPrice: (json['unit_price'] as num?)?.toInt(),
   notes: json['notes'] as String?,
+  weight: (json['weight'] as num?)?.toDouble(),
 );
 
 Map<String, dynamic> _$$AddItemOrderRequestDtoImplToJson(
@@ -327,4 +338,5 @@ Map<String, dynamic> _$$AddItemOrderRequestDtoImplToJson(
   'quantity': instance.quantity,
   'unit_price': instance.unitPrice,
   'notes': instance.notes,
+  'weight': instance.weight,
 };

lib/infrastructure/product/dtos/product_dto.dart

@@ -24,6 +24,25 @@ class ListProductDto with _$ListProductDto {
   );
 }
 
+/// Satuan yang menempel pada produk.
+///
+/// Backend hanya dijamin mengirim `unit_id`; sebagian response ikut menyertakan
+/// objek `unit` lengkap. Kalau ada, dipakai langsung supaya POS tidak perlu
+/// menunggu master satuan termuat.
+@freezed
+class ProductUnitDto with _$ProductUnitDto {
+  const ProductUnitDto._();
+
+  const factory ProductUnitDto({
+    @JsonKey(name: "id") String? id,
+    @JsonKey(name: "name") String? name,
+    @JsonKey(name: "abbreviation") String? abbreviation,
+  }) = _ProductUnitDto;
+
+  factory ProductUnitDto.fromJson(Map<String, dynamic> json) =>
+      _$ProductUnitDtoFromJson(json);
+}
+
 @freezed
 class ProductDto with _$ProductDto {
   const ProductDto._();
@@ -46,11 +65,28 @@ class ProductDto with _$ProductDto {
     @JsonKey(name: "created_at") String? createdAt,
     @JsonKey(name: "updated_at") String? updatedAt,
     @JsonKey(name: "variants") List<ProductVariantDto>? variants,
+    @JsonKey(name: "sell_by") String? sellBy,
+    @JsonKey(name: "unit_id") String? unitId,
+    @JsonKey(name: "unit_name") String? unitName,
+    @JsonKey(name: "unit_abbreviation") String? unitAbbreviation,
+    @JsonKey(name: "unit") ProductUnitDto? unit,
   }) = _ProductDto;
 
   factory ProductDto.fromJson(Map<String, dynamic> json) =>
       _$ProductDtoFromJson(json);
 
+  String get _resolvedUnitId =>
+      (unitId?.isNotEmpty == true ? unitId : unit?.id) ?? '';
+
+  String get _resolvedUnitName =>
+      (unitName?.isNotEmpty == true ? unitName : unit?.name) ?? '';
+
+  String get _resolvedUnitAbbreviation =>
+      (unitAbbreviation?.isNotEmpty == true
+          ? unitAbbreviation
+          : unit?.abbreviation) ??
+      '';
+
   /// Mapping ke domain
   Product toDomain() => Product(
     id: id ?? '',
@@ -70,6 +106,10 @@ class ProductDto with _$ProductDto {
     createdAt: createdAt ?? '',
     updatedAt: updatedAt ?? '',
     variants: variants?.map((v) => v.toDomain()).toList() ?? [],
+    sellBy: SellBy.normalize(sellBy),
+    unitId: _resolvedUnitId,
+    unitName: _resolvedUnitName,
+    unitAbbreviation: _resolvedUnitAbbreviation,
   );
 
   Map<String, dynamic> toMap() => {
@@ -89,6 +129,10 @@ class ProductDto with _$ProductDto {
     'is_active': isActive == true ? 1 : 0,
     'created_at': createdAt,
     'updated_at': updatedAt,
+    'sell_by': SellBy.normalize(sellBy),
+    'unit_id': _resolvedUnitId,
+    'unit_name': _resolvedUnitName,
+    'unit_abbreviation': _resolvedUnitAbbreviation,
   };
 
   factory ProductDto.fromMap(
@@ -117,6 +161,10 @@ class ProductDto with _$ProductDto {
     createdAt: map['created_at'] as String?,
     updatedAt: map['updated_at'] as String?,
     variants: variants,
+    sellBy: map['sell_by'] as String?,
+    unitId: map['unit_id'] as String?,
+    unitName: map['unit_name'] as String?,
+    unitAbbreviation: map['unit_abbreviation'] as String?,
   );
 
   factory ProductDto.fromDomain(Product product) => ProductDto(
@@ -139,6 +187,10 @@ class ProductDto with _$ProductDto {
     variants: product.variants
         .map((v) => ProductVariantDto.fromDomain(v))
         .toList(),
+    sellBy: product.sellBy,
+    unitId: product.unitId,
+    unitName: product.unitName,
+    unitAbbreviation: product.unitAbbreviation,
   );
 }
 

lib/infrastructure/product/product_dtos.dart

@@ -2,6 +2,7 @@ import 'dart:convert';
 
 import 'package:freezed_annotation/freezed_annotation.dart';
 
+import '../../common/types/sell_by.dart';
 import '../../domain/product/product.dart';
 
 part 'product_dtos.freezed.dart';

lib/infrastructure/product/product_dtos.freezed.dart

@@ -293,6 +293,223 @@ abstract class _ListProductDto extends ListProductDto {
       throw _privateConstructorUsedError;
 }
 
+ProductUnitDto _$ProductUnitDtoFromJson(Map<String, dynamic> json) {
+  return _ProductUnitDto.fromJson(json);
+}
+
+/// @nodoc
+mixin _$ProductUnitDto {
+  @JsonKey(name: "id")
+  String? get id => throw _privateConstructorUsedError;
+  @JsonKey(name: "name")
+  String? get name => throw _privateConstructorUsedError;
+  @JsonKey(name: "abbreviation")
+  String? get abbreviation => throw _privateConstructorUsedError;
+
+  /// Serializes this ProductUnitDto to a JSON map.
+  Map<String, dynamic> toJson() => throw _privateConstructorUsedError;
+
+  /// Create a copy of ProductUnitDto
+  /// with the given fields replaced by the non-null parameter values.
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  $ProductUnitDtoCopyWith<ProductUnitDto> get copyWith =>
+      throw _privateConstructorUsedError;
+}
+
+/// @nodoc
+abstract class $ProductUnitDtoCopyWith<$Res> {
+  factory $ProductUnitDtoCopyWith(
+    ProductUnitDto value,
+    $Res Function(ProductUnitDto) then,
+  ) = _$ProductUnitDtoCopyWithImpl<$Res, ProductUnitDto>;
+  @useResult
+  $Res call({
+    @JsonKey(name: "id") String? id,
+    @JsonKey(name: "name") String? name,
+    @JsonKey(name: "abbreviation") String? abbreviation,
+  });
+}
+
+/// @nodoc
+class _$ProductUnitDtoCopyWithImpl<$Res, $Val extends ProductUnitDto>
+    implements $ProductUnitDtoCopyWith<$Res> {
+  _$ProductUnitDtoCopyWithImpl(this._value, this._then);
+
+  // ignore: unused_field
+  final $Val _value;
+  // ignore: unused_field
+  final $Res Function($Val) _then;
+
+  /// Create a copy of ProductUnitDto
+  /// with the given fields replaced by the non-null parameter values.
+  @pragma('vm:prefer-inline')
+  @override
+  $Res call({
+    Object? id = freezed,
+    Object? name = freezed,
+    Object? abbreviation = freezed,
+  }) {
+    return _then(
+      _value.copyWith(
+            id: freezed == id
+                ? _value.id
+                : id // ignore: cast_nullable_to_non_nullable
+                      as String?,
+            name: freezed == name
+                ? _value.name
+                : name // ignore: cast_nullable_to_non_nullable
+                      as String?,
+            abbreviation: freezed == abbreviation
+                ? _value.abbreviation
+                : abbreviation // ignore: cast_nullable_to_non_nullable
+                      as String?,
+          )
+          as $Val,
+    );
+  }
+}
+
+/// @nodoc
+abstract class _$$ProductUnitDtoImplCopyWith<$Res>
+    implements $ProductUnitDtoCopyWith<$Res> {
+  factory _$$ProductUnitDtoImplCopyWith(
+    _$ProductUnitDtoImpl value,
+    $Res Function(_$ProductUnitDtoImpl) then,
+  ) = __$$ProductUnitDtoImplCopyWithImpl<$Res>;
+  @override
+  @useResult
+  $Res call({
+    @JsonKey(name: "id") String? id,
+    @JsonKey(name: "name") String? name,
+    @JsonKey(name: "abbreviation") String? abbreviation,
+  });
+}
+
+/// @nodoc
+class __$$ProductUnitDtoImplCopyWithImpl<$Res>
+    extends _$ProductUnitDtoCopyWithImpl<$Res, _$ProductUnitDtoImpl>
+    implements _$$ProductUnitDtoImplCopyWith<$Res> {
+  __$$ProductUnitDtoImplCopyWithImpl(
+    _$ProductUnitDtoImpl _value,
+    $Res Function(_$ProductUnitDtoImpl) _then,
+  ) : super(_value, _then);
+
+  /// Create a copy of ProductUnitDto
+  /// with the given fields replaced by the non-null parameter values.
+  @pragma('vm:prefer-inline')
+  @override
+  $Res call({
+    Object? id = freezed,
+    Object? name = freezed,
+    Object? abbreviation = freezed,
+  }) {
+    return _then(
+      _$ProductUnitDtoImpl(
+        id: freezed == id
+            ? _value.id
+            : id // ignore: cast_nullable_to_non_nullable
+                  as String?,
+        name: freezed == name
+            ? _value.name
+            : name // ignore: cast_nullable_to_non_nullable
+                  as String?,
+        abbreviation: freezed == abbreviation
+            ? _value.abbreviation
+            : abbreviation // ignore: cast_nullable_to_non_nullable
+                  as String?,
+      ),
+    );
+  }
+}
+
+/// @nodoc
+@JsonSerializable()
+class _$ProductUnitDtoImpl extends _ProductUnitDto {
+  const _$ProductUnitDtoImpl({
+    @JsonKey(name: "id") this.id,
+    @JsonKey(name: "name") this.name,
+    @JsonKey(name: "abbreviation") this.abbreviation,
+  }) : super._();
+
+  factory _$ProductUnitDtoImpl.fromJson(Map<String, dynamic> json) =>
+      _$$ProductUnitDtoImplFromJson(json);
+
+  @override
+  @JsonKey(name: "id")
+  final String? id;
+  @override
+  @JsonKey(name: "name")
+  final String? name;
+  @override
+  @JsonKey(name: "abbreviation")
+  final String? abbreviation;
+
+  @override
+  String toString() {
+    return 'ProductUnitDto(id: $id, name: $name, abbreviation: $abbreviation)';
+  }
+
+  @override
+  bool operator ==(Object other) {
+    return identical(this, other) ||
+        (other.runtimeType == runtimeType &&
+            other is _$ProductUnitDtoImpl &&
+            (identical(other.id, id) || other.id == id) &&
+            (identical(other.name, name) || other.name == name) &&
+            (identical(other.abbreviation, abbreviation) ||
+                other.abbreviation == abbreviation));
+  }
+
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  @override
+  int get hashCode => Object.hash(runtimeType, id, name, abbreviation);
+
+  /// Create a copy of ProductUnitDto
+  /// with the given fields replaced by the non-null parameter values.
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  @override
+  @pragma('vm:prefer-inline')
+  _$$ProductUnitDtoImplCopyWith<_$ProductUnitDtoImpl> get copyWith =>
+      __$$ProductUnitDtoImplCopyWithImpl<_$ProductUnitDtoImpl>(
+        this,
+        _$identity,
+      );
+
+  @override
+  Map<String, dynamic> toJson() {
+    return _$$ProductUnitDtoImplToJson(this);
+  }
+}
+
+abstract class _ProductUnitDto extends ProductUnitDto {
+  const factory _ProductUnitDto({
+    @JsonKey(name: "id") final String? id,
+    @JsonKey(name: "name") final String? name,
+    @JsonKey(name: "abbreviation") final String? abbreviation,
+  }) = _$ProductUnitDtoImpl;
+  const _ProductUnitDto._() : super._();
+
+  factory _ProductUnitDto.fromJson(Map<String, dynamic> json) =
+      _$ProductUnitDtoImpl.fromJson;
+
+  @override
+  @JsonKey(name: "id")
+  String? get id;
+  @override
+  @JsonKey(name: "name")
+  String? get name;
+  @override
+  @JsonKey(name: "abbreviation")
+  String? get abbreviation;
+
+  /// Create a copy of ProductUnitDto
+  /// with the given fields replaced by the non-null parameter values.
+  @override
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  _$$ProductUnitDtoImplCopyWith<_$ProductUnitDtoImpl> get copyWith =>
+      throw _privateConstructorUsedError;
+}
+
 ProductDto _$ProductDtoFromJson(Map<String, dynamic> json) {
   return _ProductDto.fromJson(json);
 }
@@ -333,6 +550,16 @@ mixin _$ProductDto {
   String? get updatedAt => throw _privateConstructorUsedError;
   @JsonKey(name: "variants")
   List<ProductVariantDto>? get variants => throw _privateConstructorUsedError;
+  @JsonKey(name: "sell_by")
+  String? get sellBy => throw _privateConstructorUsedError;
+  @JsonKey(name: "unit_id")
+  String? get unitId => throw _privateConstructorUsedError;
+  @JsonKey(name: "unit_name")
+  String? get unitName => throw _privateConstructorUsedError;
+  @JsonKey(name: "unit_abbreviation")
+  String? get unitAbbreviation => throw _privateConstructorUsedError;
+  @JsonKey(name: "unit")
+  ProductUnitDto? get unit => throw _privateConstructorUsedError;
 
   /// Serializes this ProductDto to a JSON map.
   Map<String, dynamic> toJson() => throw _privateConstructorUsedError;
@@ -369,7 +596,14 @@ abstract class $ProductDtoCopyWith<$Res> {
     @JsonKey(name: "created_at") String? createdAt,
     @JsonKey(name: "updated_at") String? updatedAt,
     @JsonKey(name: "variants") List<ProductVariantDto>? variants,
+    @JsonKey(name: "sell_by") String? sellBy,
+    @JsonKey(name: "unit_id") String? unitId,
+    @JsonKey(name: "unit_name") String? unitName,
+    @JsonKey(name: "unit_abbreviation") String? unitAbbreviation,
+    @JsonKey(name: "unit") ProductUnitDto? unit,
   });
+
+  $ProductUnitDtoCopyWith<$Res>? get unit;
 }
 
 /// @nodoc
@@ -404,6 +638,11 @@ class _$ProductDtoCopyWithImpl<$Res, $Val extends ProductDto>
     Object? createdAt = freezed,
     Object? updatedAt = freezed,
     Object? variants = freezed,
+    Object? sellBy = freezed,
+    Object? unitId = freezed,
+    Object? unitName = freezed,
+    Object? unitAbbreviation = freezed,
+    Object? unit = freezed,
   }) {
     return _then(
       _value.copyWith(
@@ -475,10 +714,44 @@ class _$ProductDtoCopyWithImpl<$Res, $Val extends ProductDto>
                 ? _value.variants
                 : variants // ignore: cast_nullable_to_non_nullable
                       as List<ProductVariantDto>?,
+            sellBy: freezed == sellBy
+                ? _value.sellBy
+                : sellBy // ignore: cast_nullable_to_non_nullable
+                      as String?,
+            unitId: freezed == unitId
+                ? _value.unitId
+                : unitId // ignore: cast_nullable_to_non_nullable
+                      as String?,
+            unitName: freezed == unitName
+                ? _value.unitName
+                : unitName // ignore: cast_nullable_to_non_nullable
+                      as String?,
+            unitAbbreviation: freezed == unitAbbreviation
+                ? _value.unitAbbreviation
+                : unitAbbreviation // ignore: cast_nullable_to_non_nullable
+                      as String?,
+            unit: freezed == unit
+                ? _value.unit
+                : unit // ignore: cast_nullable_to_non_nullable
+                      as ProductUnitDto?,
           )
           as $Val,
     );
   }
+
+  /// Create a copy of ProductDto
+  /// with the given fields replaced by the non-null parameter values.
+  @override
+  @pragma('vm:prefer-inline')
+  $ProductUnitDtoCopyWith<$Res>? get unit {
+    if (_value.unit == null) {
+      return null;
+    }
+
+    return $ProductUnitDtoCopyWith<$Res>(_value.unit!, (value) {
+      return _then(_value.copyWith(unit: value) as $Val);
+    });
+  }
 }
 
 /// @nodoc
@@ -508,7 +781,15 @@ abstract class _$$ProductDtoImplCopyWith<$Res>
     @JsonKey(name: "created_at") String? createdAt,
     @JsonKey(name: "updated_at") String? updatedAt,
     @JsonKey(name: "variants") List<ProductVariantDto>? variants,
+    @JsonKey(name: "sell_by") String? sellBy,
+    @JsonKey(name: "unit_id") String? unitId,
+    @JsonKey(name: "unit_name") String? unitName,
+    @JsonKey(name: "unit_abbreviation") String? unitAbbreviation,
+    @JsonKey(name: "unit") ProductUnitDto? unit,
   });
+
+  @override
+  $ProductUnitDtoCopyWith<$Res>? get unit;
 }
 
 /// @nodoc
@@ -542,6 +823,11 @@ class __$$ProductDtoImplCopyWithImpl<$Res>
     Object? createdAt = freezed,
     Object? updatedAt = freezed,
     Object? variants = freezed,
+    Object? sellBy = freezed,
+    Object? unitId = freezed,
+    Object? unitName = freezed,
+    Object? unitAbbreviation = freezed,
+    Object? unit = freezed,
   }) {
     return _then(
       _$ProductDtoImpl(
@@ -613,6 +899,26 @@ class __$$ProductDtoImplCopyWithImpl<$Res>
             ? _value._variants
             : variants // ignore: cast_nullable_to_non_nullable
                   as List<ProductVariantDto>?,
+        sellBy: freezed == sellBy
+            ? _value.sellBy
+            : sellBy // ignore: cast_nullable_to_non_nullable
+                  as String?,
+        unitId: freezed == unitId
+            ? _value.unitId
+            : unitId // ignore: cast_nullable_to_non_nullable
+                  as String?,
+        unitName: freezed == unitName
+            ? _value.unitName
+            : unitName // ignore: cast_nullable_to_non_nullable
+                  as String?,
+        unitAbbreviation: freezed == unitAbbreviation
+            ? _value.unitAbbreviation
+            : unitAbbreviation // ignore: cast_nullable_to_non_nullable
+                  as String?,
+        unit: freezed == unit
+            ? _value.unit
+            : unit // ignore: cast_nullable_to_non_nullable
+                  as ProductUnitDto?,
       ),
     );
   }
@@ -639,6 +945,11 @@ class _$ProductDtoImpl extends _ProductDto {
     @JsonKey(name: "created_at") this.createdAt,
     @JsonKey(name: "updated_at") this.updatedAt,
     @JsonKey(name: "variants") final List<ProductVariantDto>? variants,
+    @JsonKey(name: "sell_by") this.sellBy,
+    @JsonKey(name: "unit_id") this.unitId,
+    @JsonKey(name: "unit_name") this.unitName,
+    @JsonKey(name: "unit_abbreviation") this.unitAbbreviation,
+    @JsonKey(name: "unit") this.unit,
   }) : _metadata = metadata,
        _variants = variants,
        super._();
@@ -713,9 +1024,25 @@ class _$ProductDtoImpl extends _ProductDto {
     return EqualUnmodifiableListView(value);
   }
 
+  @override
+  @JsonKey(name: "sell_by")
+  final String? sellBy;
+  @override
+  @JsonKey(name: "unit_id")
+  final String? unitId;
+  @override
+  @JsonKey(name: "unit_name")
+  final String? unitName;
+  @override
+  @JsonKey(name: "unit_abbreviation")
+  final String? unitAbbreviation;
+  @override
+  @JsonKey(name: "unit")
+  final ProductUnitDto? unit;
+
   @override
   String toString() {
-    return 'ProductDto(id: $id, organizationId: $organizationId, categoryId: $categoryId, sku: $sku, name: $name, description: $description, price: $price, cost: $cost, businessType: $businessType, imageUrl: $imageUrl, printerType: $printerType, printToChecker: $printToChecker, metadata: $metadata, isActive: $isActive, createdAt: $createdAt, updatedAt: $updatedAt, variants: $variants)';
+    return 'ProductDto(id: $id, organizationId: $organizationId, categoryId: $categoryId, sku: $sku, name: $name, description: $description, price: $price, cost: $cost, businessType: $businessType, imageUrl: $imageUrl, printerType: $printerType, printToChecker: $printToChecker, metadata: $metadata, isActive: $isActive, createdAt: $createdAt, updatedAt: $updatedAt, variants: $variants, sellBy: $sellBy, unitId: $unitId, unitName: $unitName, unitAbbreviation: $unitAbbreviation, unit: $unit)';
   }
 
   @override
@@ -749,12 +1076,19 @@ class _$ProductDtoImpl extends _ProductDto {
                 other.createdAt == createdAt) &&
             (identical(other.updatedAt, updatedAt) ||
                 other.updatedAt == updatedAt) &&
-            const DeepCollectionEquality().equals(other._variants, _variants));
+            const DeepCollectionEquality().equals(other._variants, _variants) &&
+            (identical(other.sellBy, sellBy) || other.sellBy == sellBy) &&
+            (identical(other.unitId, unitId) || other.unitId == unitId) &&
+            (identical(other.unitName, unitName) ||
+                other.unitName == unitName) &&
+            (identical(other.unitAbbreviation, unitAbbreviation) ||
+                other.unitAbbreviation == unitAbbreviation) &&
+            (identical(other.unit, unit) || other.unit == unit));
   }
 
   @JsonKey(includeFromJson: false, includeToJson: false)
   @override
-  int get hashCode => Object.hash(
+  int get hashCode => Object.hashAll([
     runtimeType,
     id,
     organizationId,
@@ -773,7 +1107,12 @@ class _$ProductDtoImpl extends _ProductDto {
     createdAt,
     updatedAt,
     const DeepCollectionEquality().hash(_variants),
-  );
+    sellBy,
+    unitId,
+    unitName,
+    unitAbbreviation,
+    unit,
+  ]);
 
   /// Create a copy of ProductDto
   /// with the given fields replaced by the non-null parameter values.
@@ -808,6 +1147,11 @@ abstract class _ProductDto extends ProductDto {
     @JsonKey(name: "created_at") final String? createdAt,
     @JsonKey(name: "updated_at") final String? updatedAt,
     @JsonKey(name: "variants") final List<ProductVariantDto>? variants,
+    @JsonKey(name: "sell_by") final String? sellBy,
+    @JsonKey(name: "unit_id") final String? unitId,
+    @JsonKey(name: "unit_name") final String? unitName,
+    @JsonKey(name: "unit_abbreviation") final String? unitAbbreviation,
+    @JsonKey(name: "unit") final ProductUnitDto? unit,
   }) = _$ProductDtoImpl;
   const _ProductDto._() : super._();
 
@@ -865,6 +1209,21 @@ abstract class _ProductDto extends ProductDto {
   @override
   @JsonKey(name: "variants")
   List<ProductVariantDto>? get variants;
+  @override
+  @JsonKey(name: "sell_by")
+  String? get sellBy;
+  @override
+  @JsonKey(name: "unit_id")
+  String? get unitId;
+  @override
+  @JsonKey(name: "unit_name")
+  String? get unitName;
+  @override
+  @JsonKey(name: "unit_abbreviation")
+  String? get unitAbbreviation;
+  @override
+  @JsonKey(name: "unit")
+  ProductUnitDto? get unit;
 
   /// Create a copy of ProductDto
   /// with the given fields replaced by the non-null parameter values.

lib/infrastructure/product/product_dtos.g.dart

@@ -27,6 +27,21 @@ Map<String, dynamic> _$$ListProductDtoImplToJson(
   'total_pages': instance.totalPages,
 };
 
+_$ProductUnitDtoImpl _$$ProductUnitDtoImplFromJson(Map<String, dynamic> json) =>
+    _$ProductUnitDtoImpl(
+      id: json['id'] as String?,
+      name: json['name'] as String?,
+      abbreviation: json['abbreviation'] as String?,
+    );
+
+Map<String, dynamic> _$$ProductUnitDtoImplToJson(
+  _$ProductUnitDtoImpl instance,
+) => <String, dynamic>{
+  'id': instance.id,
+  'name': instance.name,
+  'abbreviation': instance.abbreviation,
+};
+
 _$ProductDtoImpl _$$ProductDtoImplFromJson(Map<String, dynamic> json) =>
     _$ProductDtoImpl(
       id: json['id'] as String?,
@@ -48,6 +63,13 @@ _$ProductDtoImpl _$$ProductDtoImplFromJson(Map<String, dynamic> json) =>
       variants: (json['variants'] as List<dynamic>?)
           ?.map((e) => ProductVariantDto.fromJson(e as Map<String, dynamic>))
           .toList(),
+      sellBy: json['sell_by'] as String?,
+      unitId: json['unit_id'] as String?,
+      unitName: json['unit_name'] as String?,
+      unitAbbreviation: json['unit_abbreviation'] as String?,
+      unit: json['unit'] == null
+          ? null
+          : ProductUnitDto.fromJson(json['unit'] as Map<String, dynamic>),
     );
 
 Map<String, dynamic> _$$ProductDtoImplToJson(_$ProductDtoImpl instance) =>
@@ -69,6 +91,11 @@ Map<String, dynamic> _$$ProductDtoImplToJson(_$ProductDtoImpl instance) =>
       'created_at': instance.createdAt,
       'updated_at': instance.updatedAt,
       'variants': instance.variants,
+      'sell_by': instance.sellBy,
+      'unit_id': instance.unitId,
+      'unit_name': instance.unitName,
+      'unit_abbreviation': instance.unitAbbreviation,
+      'unit': instance.unit,
     };
 
 _$ProductVariantDtoImpl _$$ProductVariantDtoImplFromJson(

lib/infrastructure/product/repositories/product_repository.dart

@@ -3,6 +3,7 @@ import 'dart:developer';
 import 'package:dartz/dartz.dart';
 import 'package:injectable/injectable.dart';
 
+import '../../../common/service/unit_registry.dart';
 import '../../../domain/product/product.dart';
 import '../datasources/local_data_provider.dart';
 import '../datasources/remote_data_provider.dart';
@@ -12,10 +13,38 @@ import '../product_dtos.dart';
 class ProductRepository implements IProductRepository {
   final ProductRemoteDataProvider _remoteDataProvider;
   final ProductLocalDataProvider _localDataProvider;
+  final UnitRegistry _unitRegistry;
 
   final _logName = 'ProductRepository';
 
-  ProductRepository(this._remoteDataProvider, this._localDataProvider);
+  ProductRepository(
+    this._remoteDataProvider,
+    this._localDataProvider,
+    this._unitRegistry,
+  );
+
+  /// Response produk hanya dijamin membawa `unit_id`. Lengkapi nama dan
+  /// singkatannya dari master satuan supaya keranjang bisa menulis "4,2 ons".
+  Product _withUnit(Product product) {
+    if (!product.isSoldByWeight || product.unitId.isEmpty) return product;
+    if (product.unitAbbreviation.isNotEmpty && product.unitName.isNotEmpty) {
+      return product;
+    }
+
+    final unit = _unitRegistry.byId(product.unitId);
+    if (unit == null) return product;
+
+    return product.copyWith(
+      unitName: product.unitName.isNotEmpty ? product.unitName : unit.name,
+      unitAbbreviation: product.unitAbbreviation.isNotEmpty
+          ? product.unitAbbreviation
+          : unit.abbreviation,
+    );
+  }
+
+  List<Product> _withUnits(List<Product> products) =>
+      products.map(_withUnit).toList();
+
 
   @override
   Future<Either<ProductFailure, Product>> getProductById(String id) async {
@@ -33,7 +62,7 @@ class ProductRepository implements IProductRepository {
         );
       }
 
-      final productDomain = product.data!.toDomain();
+      final productDomain = _withUnit(product.data!.toDomain());
 
       log('✅ Product loaded: ${productDomain.name}', name: _logName);
       return Right(productDomain);
@@ -85,7 +114,9 @@ class ProductRepository implements IProductRepository {
 
       // 🧱 Bangun entity domain ListProduct
       final result = ListProduct(
-        products: cachedProducts.data!.map((p) => p.toDomain()).toList(),
+        products: _withUnits(
+          cachedProducts.data!.map((p) => p.toDomain()).toList(),
+        ),
         totalCount: totalCount,
         page: page,
         limit: limit,
@@ -132,7 +163,9 @@ class ProductRepository implements IProductRepository {
         return left(cachedProducts.error!);
       }
 
-      final products = cachedProducts.data!.map((p) => p.toDomain()).toList();
+      final products = _withUnits(
+        cachedProducts.data!.map((p) => p.toDomain()).toList(),
+      );
 
       final totalCount = await _localDataProvider.getTotalCount(
         categoryId: categoryId,
@@ -180,7 +213,9 @@ class ProductRepository implements IProductRepository {
       }
 
       // ✅ Mapping ke domain entity (kalau hasilnya masih berupa DTO)
-      final products = results.data!.map((p) => p.toDomain()).toList();
+      final products = _withUnits(
+        results.data!.map((p) => p.toDomain()).toList(),
+      );
 
       log(
         '✅ Local search completed: ${products.length} results',
@@ -369,7 +404,7 @@ class ProductRepository implements IProductRepository {
 
       final products = result.data!.toDomain();
 
-      return right(products);
+      return right(products.copyWith(products: _withUnits(products.products)));
     } catch (e, s) {
       log('getProducts', name: _logName, error: e, stackTrace: s);
       return left(const ProductFailure.unexpectedError());

lib/infrastructure/unit/datasources/local_data_provider.dart

@@ -0,0 +1,38 @@
+import 'dart:convert';
+
+import 'package:injectable/injectable.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+import '../../../common/constant/local_storage_key.dart';
+import '../unit_dtos.dart';
+
+/// Satuan berjumlah sedikit dan jarang berubah, jadi cukup disimpan sebagai
+/// satu blob JSON di SharedPreferences — tidak perlu tabel sqflite sendiri.
+@injectable
+class UnitLocalDataProvider {
+  final SharedPreferences _sharedPreferences;
+
+  UnitLocalDataProvider(this._sharedPreferences);
+
+  Future<void> saveUnits(List<UnitDto> units) async {
+    final jsonString = jsonEncode(units.map((e) => e.toJson()).toList());
+    await _sharedPreferences.setString(LocalStorageKey.units, jsonString);
+  }
+
+  List<UnitDto> getUnits() {
+    final jsonString = _sharedPreferences.getString(LocalStorageKey.units);
+    if (jsonString == null || jsonString.isEmpty) return const [];
+
+    final decoded = jsonDecode(jsonString);
+    if (decoded is! List) return const [];
+
+    return decoded
+        .whereType<Map<String, dynamic>>()
+        .map(UnitDto.fromJson)
+        .toList();
+  }
+
+  Future<void> clearUnits() async {
+    await _sharedPreferences.remove(LocalStorageKey.units);
+  }
+}

lib/infrastructure/unit/datasources/remote_data_provider.dart

@@ -0,0 +1,37 @@
+import 'dart:developer';
+
+import 'package:data_channel/data_channel.dart';
+import 'package:injectable/injectable.dart';
+
+import '../../../common/api/api_client.dart';
+import '../../../common/api/api_failure.dart';
+import '../../../common/function/app_function.dart';
+import '../../../common/url/api_path.dart';
+import '../../../domain/unit/unit.dart';
+import '../unit_dtos.dart';
+
+@injectable
+class UnitRemoteDataProvider {
+  final ApiClient _apiClient;
+  final _logName = 'UnitRemoteDataProvider';
+
+  UnitRemoteDataProvider(this._apiClient);
+
+  Future<DC<UnitFailure, List<UnitDto>>> fetchUnits() async {
+    try {
+      final response = await _apiClient.get(
+        ApiPath.units,
+        headers: getAuthorizationHeader(),
+      );
+
+      if (response.data['data'] == null) {
+        return DC.error(const UnitFailure.empty());
+      }
+
+      return DC.data(UnitDto.listFromResponse(response.data['data']));
+    } on ApiFailure catch (e, s) {
+      log('fetchUnitsError', name: _logName, error: e, stackTrace: s);
+      return DC.error(UnitFailure.serverError(e));
+    }
+  }
+}

lib/infrastructure/unit/dtos/unit_dto.dart

@@ -0,0 +1,59 @@
+part of '../unit_dtos.dart';
+
+@freezed
+class UnitDto with _$UnitDto {
+  const UnitDto._();
+
+  const factory UnitDto({
+    @JsonKey(name: "id") String? id,
+    @JsonKey(name: "organization_id") String? organizationId,
+    @JsonKey(name: "name") String? name,
+    @JsonKey(name: "abbreviation") String? abbreviation,
+    @JsonKey(name: "is_active") bool? isActive,
+  }) = _UnitDto;
+
+  factory UnitDto.fromJson(Map<String, dynamic> json) =>
+      _$UnitDtoFromJson(json);
+
+  ProductUnit toDomain() => ProductUnit(
+    id: id ?? '',
+    organizationId: organizationId ?? '',
+    name: name ?? '',
+    abbreviation: abbreviation ?? '',
+    isActive: isActive ?? true,
+  );
+
+  factory UnitDto.fromDomain(ProductUnit unit) => UnitDto(
+    id: unit.id,
+    organizationId: unit.organizationId,
+    name: unit.name,
+    abbreviation: unit.abbreviation,
+    isActive: unit.isActive,
+  );
+
+  /// Response `/units` belum tentu berbentuk sama di setiap versi backend —
+  /// bisa `data: [...]` atau `data: { units: [...] }`. Terima keduanya supaya
+  /// POS tidak kehilangan satuan hanya karena pembungkusnya berbeda.
+  static List<UnitDto> listFromResponse(dynamic data) {
+    if (data is List) {
+      return data
+          .whereType<Map<String, dynamic>>()
+          .map(UnitDto.fromJson)
+          .toList();
+    }
+
+    if (data is Map<String, dynamic>) {
+      for (final key in const ['units', 'items', 'data']) {
+        final value = data[key];
+        if (value is List) {
+          return value
+              .whereType<Map<String, dynamic>>()
+              .map(UnitDto.fromJson)
+              .toList();
+        }
+      }
+    }
+
+    return const [];
+  }
+}

lib/infrastructure/unit/repositories/unit_repository.dart

@@ -0,0 +1,56 @@
+import 'dart:developer';
+
+import 'package:dartz/dartz.dart';
+import 'package:injectable/injectable.dart';
+
+import '../../../domain/unit/unit.dart';
+import '../datasources/local_data_provider.dart';
+import '../datasources/remote_data_provider.dart';
+
+@Injectable(as: IUnitRepository)
+class UnitRepository implements IUnitRepository {
+  final UnitRemoteDataProvider _remoteDataProvider;
+  final UnitLocalDataProvider _localDataProvider;
+
+  final _logName = 'UnitRepository';
+
+  UnitRepository(this._remoteDataProvider, this._localDataProvider);
+
+  @override
+  Future<Either<UnitFailure, List<ProductUnit>>> getUnits({
+    bool forceRefresh = false,
+  }) async {
+    try {
+      final cached = _localDataProvider.getUnits();
+
+      if (!forceRefresh && cached.isNotEmpty) {
+        log('📏 ${cached.length} satuan dari cache', name: _logName);
+        return right(cached.map((e) => e.toDomain()).toList());
+      }
+
+      final result = await _remoteDataProvider.fetchUnits();
+
+      if (result.hasError) {
+        // Offline bukan alasan untuk kehilangan satuan yang sudah pernah ada.
+        if (cached.isNotEmpty) {
+          log('⚠️ Gagal ambil satuan, pakai cache', name: _logName);
+          return right(cached.map((e) => e.toDomain()).toList());
+        }
+        return left(result.error!);
+      }
+
+      final units = result.data!;
+      await _localDataProvider.saveUnits(units);
+
+      log('✅ ${units.length} satuan disinkronkan', name: _logName);
+      return right(units.map((e) => e.toDomain()).toList());
+    } catch (e, s) {
+      log('❌ Error getUnits', name: _logName, error: e, stackTrace: s);
+      return left(UnitFailure.localStorageError(e.toString()));
+    }
+  }
+
+  @override
+  Future<List<ProductUnit>> cachedUnits() async =>
+      _localDataProvider.getUnits().map((e) => e.toDomain()).toList();
+}

lib/infrastructure/unit/unit_dtos.dart

@@ -0,0 +1,8 @@
+import 'package:freezed_annotation/freezed_annotation.dart';
+
+import '../../domain/unit/unit.dart';
+
+part 'unit_dtos.freezed.dart';
+part 'unit_dtos.g.dart';
+
+part 'dtos/unit_dto.dart';

lib/infrastructure/unit/unit_dtos.freezed.dart

@@ -0,0 +1,280 @@
+// coverage:ignore-file
+// GENERATED CODE - DO NOT MODIFY BY HAND
+// ignore_for_file: type=lint
+// ignore_for_file: unused_element, deprecated_member_use, deprecated_member_use_from_same_package, use_function_type_syntax_for_parameters, unnecessary_const, avoid_init_to_null, invalid_override_different_default_values_named, prefer_expression_function_bodies, annotate_overrides, invalid_annotation_target, unnecessary_question_mark
+
+part of 'unit_dtos.dart';
+
+// **************************************************************************
+// FreezedGenerator
+// **************************************************************************
+
+T _$identity<T>(T value) => value;
+
+final _privateConstructorUsedError = UnsupportedError(
+  'It seems like you constructed your class using `MyClass._()`. This constructor is only meant to be used by freezed and you are not supposed to need it nor use it.\nPlease check the documentation here for more information: https://github.com/rrousselGit/freezed#adding-getters-and-methods-to-our-models',
+);
+
+UnitDto _$UnitDtoFromJson(Map<String, dynamic> json) {
+  return _UnitDto.fromJson(json);
+}
+
+/// @nodoc
+mixin _$UnitDto {
+  @JsonKey(name: "id")
+  String? get id => throw _privateConstructorUsedError;
+  @JsonKey(name: "organization_id")
+  String? get organizationId => throw _privateConstructorUsedError;
+  @JsonKey(name: "name")
+  String? get name => throw _privateConstructorUsedError;
+  @JsonKey(name: "abbreviation")
+  String? get abbreviation => throw _privateConstructorUsedError;
+  @JsonKey(name: "is_active")
+  bool? get isActive => throw _privateConstructorUsedError;
+
+  /// Serializes this UnitDto to a JSON map.
+  Map<String, dynamic> toJson() => throw _privateConstructorUsedError;
+
+  /// Create a copy of UnitDto
+  /// with the given fields replaced by the non-null parameter values.
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  $UnitDtoCopyWith<UnitDto> get copyWith => throw _privateConstructorUsedError;
+}
+
+/// @nodoc
+abstract class $UnitDtoCopyWith<$Res> {
+  factory $UnitDtoCopyWith(UnitDto value, $Res Function(UnitDto) then) =
+      _$UnitDtoCopyWithImpl<$Res, UnitDto>;
+  @useResult
+  $Res call({
+    @JsonKey(name: "id") String? id,
+    @JsonKey(name: "organization_id") String? organizationId,
+    @JsonKey(name: "name") String? name,
+    @JsonKey(name: "abbreviation") String? abbreviation,
+    @JsonKey(name: "is_active") bool? isActive,
+  });
+}
+
+/// @nodoc
+class _$UnitDtoCopyWithImpl<$Res, $Val extends UnitDto>
+    implements $UnitDtoCopyWith<$Res> {
+  _$UnitDtoCopyWithImpl(this._value, this._then);
+
+  // ignore: unused_field
+  final $Val _value;
+  // ignore: unused_field
+  final $Res Function($Val) _then;
+
+  /// Create a copy of UnitDto
+  /// with the given fields replaced by the non-null parameter values.
+  @pragma('vm:prefer-inline')
+  @override
+  $Res call({
+    Object? id = freezed,
+    Object? organizationId = freezed,
+    Object? name = freezed,
+    Object? abbreviation = freezed,
+    Object? isActive = freezed,
+  }) {
+    return _then(
+      _value.copyWith(
+            id: freezed == id
+                ? _value.id
+                : id // ignore: cast_nullable_to_non_nullable
+                      as String?,
+            organizationId: freezed == organizationId
+                ? _value.organizationId
+                : organizationId // ignore: cast_nullable_to_non_nullable
+                      as String?,
+            name: freezed == name
+                ? _value.name
+                : name // ignore: cast_nullable_to_non_nullable
+                      as String?,
+            abbreviation: freezed == abbreviation
+                ? _value.abbreviation
+                : abbreviation // ignore: cast_nullable_to_non_nullable
+                      as String?,
+            isActive: freezed == isActive
+                ? _value.isActive
+                : isActive // ignore: cast_nullable_to_non_nullable
+                      as bool?,
+          )
+          as $Val,
+    );
+  }
+}
+
+/// @nodoc
+abstract class _$$UnitDtoImplCopyWith<$Res> implements $UnitDtoCopyWith<$Res> {
+  factory _$$UnitDtoImplCopyWith(
+    _$UnitDtoImpl value,
+    $Res Function(_$UnitDtoImpl) then,
+  ) = __$$UnitDtoImplCopyWithImpl<$Res>;
+  @override
+  @useResult
+  $Res call({
+    @JsonKey(name: "id") String? id,
+    @JsonKey(name: "organization_id") String? organizationId,
+    @JsonKey(name: "name") String? name,
+    @JsonKey(name: "abbreviation") String? abbreviation,
+    @JsonKey(name: "is_active") bool? isActive,
+  });
+}
+
+/// @nodoc
+class __$$UnitDtoImplCopyWithImpl<$Res>
+    extends _$UnitDtoCopyWithImpl<$Res, _$UnitDtoImpl>
+    implements _$$UnitDtoImplCopyWith<$Res> {
+  __$$UnitDtoImplCopyWithImpl(
+    _$UnitDtoImpl _value,
+    $Res Function(_$UnitDtoImpl) _then,
+  ) : super(_value, _then);
+
+  /// Create a copy of UnitDto
+  /// with the given fields replaced by the non-null parameter values.
+  @pragma('vm:prefer-inline')
+  @override
+  $Res call({
+    Object? id = freezed,
+    Object? organizationId = freezed,
+    Object? name = freezed,
+    Object? abbreviation = freezed,
+    Object? isActive = freezed,
+  }) {
+    return _then(
+      _$UnitDtoImpl(
+        id: freezed == id
+            ? _value.id
+            : id // ignore: cast_nullable_to_non_nullable
+                  as String?,
+        organizationId: freezed == organizationId
+            ? _value.organizationId
+            : organizationId // ignore: cast_nullable_to_non_nullable
+                  as String?,
+        name: freezed == name
+            ? _value.name
+            : name // ignore: cast_nullable_to_non_nullable
+                  as String?,
+        abbreviation: freezed == abbreviation
+            ? _value.abbreviation
+            : abbreviation // ignore: cast_nullable_to_non_nullable
+                  as String?,
+        isActive: freezed == isActive
+            ? _value.isActive
+            : isActive // ignore: cast_nullable_to_non_nullable
+                  as bool?,
+      ),
+    );
+  }
+}
+
+/// @nodoc
+@JsonSerializable()
+class _$UnitDtoImpl extends _UnitDto {
+  const _$UnitDtoImpl({
+    @JsonKey(name: "id") this.id,
+    @JsonKey(name: "organization_id") this.organizationId,
+    @JsonKey(name: "name") this.name,
+    @JsonKey(name: "abbreviation") this.abbreviation,
+    @JsonKey(name: "is_active") this.isActive,
+  }) : super._();
+
+  factory _$UnitDtoImpl.fromJson(Map<String, dynamic> json) =>
+      _$$UnitDtoImplFromJson(json);
+
+  @override
+  @JsonKey(name: "id")
+  final String? id;
+  @override
+  @JsonKey(name: "organization_id")
+  final String? organizationId;
+  @override
+  @JsonKey(name: "name")
+  final String? name;
+  @override
+  @JsonKey(name: "abbreviation")
+  final String? abbreviation;
+  @override
+  @JsonKey(name: "is_active")
+  final bool? isActive;
+
+  @override
+  String toString() {
+    return 'UnitDto(id: $id, organizationId: $organizationId, name: $name, abbreviation: $abbreviation, isActive: $isActive)';
+  }
+
+  @override
+  bool operator ==(Object other) {
+    return identical(this, other) ||
+        (other.runtimeType == runtimeType &&
+            other is _$UnitDtoImpl &&
+            (identical(other.id, id) || other.id == id) &&
+            (identical(other.organizationId, organizationId) ||
+                other.organizationId == organizationId) &&
+            (identical(other.name, name) || other.name == name) &&
+            (identical(other.abbreviation, abbreviation) ||
+                other.abbreviation == abbreviation) &&
+            (identical(other.isActive, isActive) ||
+                other.isActive == isActive));
+  }
+
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  @override
+  int get hashCode => Object.hash(
+    runtimeType,
+    id,
+    organizationId,
+    name,
+    abbreviation,
+    isActive,
+  );
+
+  /// Create a copy of UnitDto
+  /// with the given fields replaced by the non-null parameter values.
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  @override
+  @pragma('vm:prefer-inline')
+  _$$UnitDtoImplCopyWith<_$UnitDtoImpl> get copyWith =>
+      __$$UnitDtoImplCopyWithImpl<_$UnitDtoImpl>(this, _$identity);
+
+  @override
+  Map<String, dynamic> toJson() {
+    return _$$UnitDtoImplToJson(this);
+  }
+}
+
+abstract class _UnitDto extends UnitDto {
+  const factory _UnitDto({
+    @JsonKey(name: "id") final String? id,
+    @JsonKey(name: "organization_id") final String? organizationId,
+    @JsonKey(name: "name") final String? name,
+    @JsonKey(name: "abbreviation") final String? abbreviation,
+    @JsonKey(name: "is_active") final bool? isActive,
+  }) = _$UnitDtoImpl;
+  const _UnitDto._() : super._();
+
+  factory _UnitDto.fromJson(Map<String, dynamic> json) = _$UnitDtoImpl.fromJson;
+
+  @override
+  @JsonKey(name: "id")
+  String? get id;
+  @override
+  @JsonKey(name: "organization_id")
+  String? get organizationId;
+  @override
+  @JsonKey(name: "name")
+  String? get name;
+  @override
+  @JsonKey(name: "abbreviation")
+  String? get abbreviation;
+  @override
+  @JsonKey(name: "is_active")
+  bool? get isActive;
+
+  /// Create a copy of UnitDto
+  /// with the given fields replaced by the non-null parameter values.
+  @override
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  _$$UnitDtoImplCopyWith<_$UnitDtoImpl> get copyWith =>
+      throw _privateConstructorUsedError;
+}

lib/infrastructure/unit/unit_dtos.g.dart

@@ -0,0 +1,25 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'unit_dtos.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+_$UnitDtoImpl _$$UnitDtoImplFromJson(Map<String, dynamic> json) =>
+    _$UnitDtoImpl(
+      id: json['id'] as String?,
+      organizationId: json['organization_id'] as String?,
+      name: json['name'] as String?,
+      abbreviation: json['abbreviation'] as String?,
+      isActive: json['is_active'] as bool?,
+    );
+
+Map<String, dynamic> _$$UnitDtoImplToJson(_$UnitDtoImpl instance) =>
+    <String, dynamic>{
+      'id': instance.id,
+      'organization_id': instance.organizationId,
+      'name': instance.name,
+      'abbreviation': instance.abbreviation,
+      'is_active': instance.isActive,
+    };