update

lib/features/add_transaction/provider.dart

@@ -0,0 +1,55 @@
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import '../../shared/models/transaction.dart';
+
+class AddTransactionState {
+  final double? amount;
+  final String category;
+  final TransactionType type;
+  final DateTime date;
+  final String note;
+  final bool isSubmitting;
+
+  const AddTransactionState({
+    this.amount,
+    this.category = 'Food',
+    this.type = TransactionType.expense,
+    required this.date,
+    this.note = '',
+    this.isSubmitting = false,
+  });
+
+  AddTransactionState copyWith({
+    double? amount,
+    String? category,
+    TransactionType? type,
+    DateTime? date,
+    String? note,
+    bool? isSubmitting,
+  }) =>
+      AddTransactionState(
+        amount: amount ?? this.amount,
+        category: category ?? this.category,
+        type: type ?? this.type,
+        date: date ?? this.date,
+        note: note ?? this.note,
+        isSubmitting: isSubmitting ?? this.isSubmitting,
+      );
+}
+
+class AddTransactionNotifier extends StateNotifier<AddTransactionState> {
+  AddTransactionNotifier()
+      : super(AddTransactionState(date: DateTime.now()));
+
+  void setAmount(double? v) => state = state.copyWith(amount: v);
+  void setCategory(String v) => state = state.copyWith(category: v);
+  void setType(TransactionType v) => state = state.copyWith(type: v);
+  void setDate(DateTime v) => state = state.copyWith(date: v);
+  void setNote(String v) => state = state.copyWith(note: v);
+  void setSubmitting(bool v) => state = state.copyWith(isSubmitting: v);
+  void reset() => state = AddTransactionState(date: DateTime.now());
+}
+
+final addTransactionProvider =
+    StateNotifierProvider.autoDispose<AddTransactionNotifier, AddTransactionState>(
+  (ref) => AddTransactionNotifier(),
+);