결재 API 계약 보완 및 테스트 정리

lib/features/inventory/transactions/domain/entities/stock_transaction_input.dart

@@ -27,17 +27,18 @@ class StockTransactionCreateInput {
   final StockTransactionApprovalInput? approval;
 
   Map<String, dynamic> toPayload() {
+    final sanitizedNote = note?.trim();
     return {
       if (transactionNo != null && transactionNo!.trim().isNotEmpty)
         'transaction_no': transactionNo,
       'transaction_type_id': transactionTypeId,
       'transaction_status_id': transactionStatusId,
       'warehouse_id': warehouseId,
-      'transaction_date': transactionDate.toIso8601String(),
+      'transaction_date': _formatNaiveDate(transactionDate),
       'created_by_id': createdById,
-      if (note != null && note!.trim().isNotEmpty) 'note': note,
+      'note': sanitizedNote,
       if (expectedReturnDate != null)
-        'expected_return_date': expectedReturnDate!.toIso8601String(),
+        'expected_return_date': _formatNaiveDate(expectedReturnDate!),
       if (lines.isNotEmpty)
         'lines': lines.map((line) => line.toJson()).toList(growable: false),
       if (customers.isNotEmpty)
@@ -62,11 +63,13 @@ class StockTransactionUpdateInput {
   final DateTime? expectedReturnDate;
 
   Map<String, dynamic> toPayload() {
+    final sanitizedNote = note?.trim();
     return {
       'transaction_status_id': transactionStatusId,
-      if (note != null && note!.trim().isNotEmpty) 'note': note,
-      if (expectedReturnDate != null)
-        'expected_return_date': expectedReturnDate!.toIso8601String(),
+      'note': sanitizedNote,
+      'expected_return_date': expectedReturnDate == null
+          ? null
+          : _formatNaiveDate(expectedReturnDate!),
     };
   }
 }
@@ -88,12 +91,13 @@ class TransactionLineCreateInput {
   final String? note;
 
   Map<String, dynamic> toJson() {
+    final sanitizedNote = note?.trim();
     return {
       'line_no': lineNo,
       'product_id': productId,
       'quantity': quantity,
       'unit_price': unitPrice,
-      if (note != null && note!.trim().isNotEmpty) 'note': note,
+      'note': sanitizedNote,
     };
   }
 }
@@ -115,12 +119,13 @@ class TransactionLineUpdateInput {
   final String? note;
 
   Map<String, dynamic> toJson() {
+    final sanitizedNote = note?.trim();
     return {
       'id': id,
       if (lineNo != null) 'line_no': lineNo,
       if (quantity != null) 'quantity': quantity,
       if (unitPrice != null) 'unit_price': unitPrice,
-      if (note != null && note!.trim().isNotEmpty) 'note': note,
+      if (note != null) 'note': sanitizedNote,
     };
   }
 }
@@ -133,10 +138,8 @@ class TransactionCustomerCreateInput {
   final String? note;
 
   Map<String, dynamic> toJson() {
-    return {
-      'customer_id': customerId,
-      if (note != null && note!.trim().isNotEmpty) 'note': note,
-    };
+    final sanitizedNote = note?.trim();
+    return {'customer_id': customerId, 'note': sanitizedNote};
   }
 }
 
@@ -148,10 +151,8 @@ class TransactionCustomerUpdateInput {
   final String? note;
 
   Map<String, dynamic> toJson() {
-    return {
-      'id': id,
-      if (note != null && note!.trim().isNotEmpty) 'note': note,
-    };
+    final sanitizedNote = note?.trim();
+    return {'id': id, 'note': sanitizedNote};
   }
 }
 
@@ -205,12 +206,7 @@ class StockTransactionListFilter {
 
   /// 백엔드가 요구하는 `yyyy-MM-dd`(NaiveDate) 형식으로 변환한다.
   String _formatDate(DateTime value) {
-    final iso = value.toIso8601String();
-    final separatorIndex = iso.indexOf('T');
-    if (separatorIndex == -1) {
-      return iso;
-    }
-    return iso.substring(0, separatorIndex);
+    return _formatNaiveDate(value);
   }
 }
 
@@ -233,7 +229,14 @@ class StockTransactionApprovalInput {
       'approval_no': approvalNo,
       if (approvalStatusId != null) 'approval_status_id': approvalStatusId,
       'requested_by_id': requestedById,
-      if (note != null && note!.trim().isNotEmpty) 'note': note,
+      'note': note?.trim(),
     };
   }
 }
+
+String _formatNaiveDate(DateTime value) {
+  final year = value.year.toString().padLeft(4, '0');
+  final month = value.month.toString().padLeft(2, '0');
+  final day = value.day.toString().padLeft(2, '0');
+  return '$year-$month-$day';
+}