결재 단계 편집 다이얼로그 구현

lib/features/approvals/history/presentation/controllers/approval_history_controller.dart

@@ -0,0 +1,94 @@
+import 'package:flutter/foundation.dart';
+import 'package:superport_v2/core/common/models/paginated_result.dart';
+
+import '../../domain/entities/approval_history_record.dart';
+import '../../domain/repositories/approval_history_repository.dart';
+
+enum ApprovalHistoryActionFilter { all, approve, reject, comment }
+
+class ApprovalHistoryController extends ChangeNotifier {
+  ApprovalHistoryController({required ApprovalHistoryRepository repository})
+    : _repository = repository;
+
+  final ApprovalHistoryRepository _repository;
+
+  PaginatedResult<ApprovalHistoryRecord>? _result;
+  bool _isLoading = false;
+  String _query = '';
+  ApprovalHistoryActionFilter _actionFilter = ApprovalHistoryActionFilter.all;
+  DateTime? _from;
+  DateTime? _to;
+  String? _errorMessage;
+
+  PaginatedResult<ApprovalHistoryRecord>? get result => _result;
+  bool get isLoading => _isLoading;
+  String get query => _query;
+  ApprovalHistoryActionFilter get actionFilter => _actionFilter;
+  DateTime? get from => _from;
+  DateTime? get to => _to;
+  String? get errorMessage => _errorMessage;
+
+  Future<void> fetch({int page = 1}) async {
+    _isLoading = true;
+    _errorMessage = null;
+    notifyListeners();
+    try {
+      final action = switch (_actionFilter) {
+        ApprovalHistoryActionFilter.all => null,
+        ApprovalHistoryActionFilter.approve => 'approve',
+        ApprovalHistoryActionFilter.reject => 'reject',
+        ApprovalHistoryActionFilter.comment => 'comment',
+      };
+
+      final response = await _repository.list(
+        page: page,
+        pageSize: _result?.pageSize ?? 20,
+        query: _query.trim().isEmpty ? null : _query.trim(),
+        action: action,
+        from: _from,
+        to: _to,
+      );
+      _result = response;
+    } catch (e) {
+      _errorMessage = e.toString();
+    } finally {
+      _isLoading = false;
+      notifyListeners();
+    }
+  }
+
+  void updateQuery(String value) {
+    _query = value;
+    notifyListeners();
+  }
+
+  void updateActionFilter(ApprovalHistoryActionFilter filter) {
+    _actionFilter = filter;
+    notifyListeners();
+  }
+
+  void updateDateRange(DateTime? from, DateTime? to) {
+    _from = from;
+    _to = to;
+    notifyListeners();
+  }
+
+  void clearFilters() {
+    _query = '';
+    _actionFilter = ApprovalHistoryActionFilter.all;
+    _from = null;
+    _to = null;
+    notifyListeners();
+  }
+
+  void clearError() {
+    _errorMessage = null;
+    notifyListeners();
+  }
+
+  bool get hasActiveFilters =>
+      _query.trim().isNotEmpty ||
+      _actionFilter != ApprovalHistoryActionFilter.all ||
+      _from != null ||
+      _to != null;
+}