결재 단계 목록 화면과 테스트 도입

lib/features/approvals/step/presentation/controllers/approval_step_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_step_record.dart';
+import '../../domain/repositories/approval_step_repository.dart';
+
+class ApprovalStepController extends ChangeNotifier {
+  ApprovalStepController({required ApprovalStepRepository repository})
+    : _repository = repository;
+
+  final ApprovalStepRepository _repository;
+
+  PaginatedResult<ApprovalStepRecord>? _result;
+  bool _isLoading = false;
+  String _query = '';
+  int? _statusId;
+  String? _errorMessage;
+  bool _isLoadingDetail = false;
+  ApprovalStepRecord? _selected;
+
+  PaginatedResult<ApprovalStepRecord>? get result => _result;
+  bool get isLoading => _isLoading;
+  String get query => _query;
+  int? get statusId => _statusId;
+  String? get errorMessage => _errorMessage;
+  bool get isLoadingDetail => _isLoadingDetail;
+  ApprovalStepRecord? get selected => _selected;
+
+  Future<void> fetch({int page = 1}) async {
+    _isLoading = true;
+    _errorMessage = null;
+    notifyListeners();
+    try {
+      final sanitizedQuery = _query.trim();
+      final response = await _repository.list(
+        page: page,
+        pageSize: _result?.pageSize ?? 20,
+        query: sanitizedQuery.isEmpty ? null : sanitizedQuery,
+        statusId: _statusId,
+      );
+      _result = response;
+    } catch (e) {
+      _errorMessage = e.toString();
+    } finally {
+      _isLoading = false;
+      notifyListeners();
+    }
+  }
+
+  void updateQuery(String value) {
+    _query = value;
+    notifyListeners();
+  }
+
+  void updateStatusId(int? value) {
+    _statusId = value;
+    notifyListeners();
+  }
+
+  Future<ApprovalStepRecord?> fetchDetail(int id) async {
+    _isLoadingDetail = true;
+    _errorMessage = null;
+    notifyListeners();
+    try {
+      final detail = await _repository.fetchDetail(id);
+      _selected = detail;
+      return detail;
+    } catch (e) {
+      _errorMessage = e.toString();
+      return null;
+    } finally {
+      _isLoadingDetail = false;
+      notifyListeners();
+    }
+  }
+
+  void clearSelection() {
+    _selected = null;
+    notifyListeners();
+  }
+
+  void clearError() {
+    _errorMessage = null;
+    notifyListeners();
+  }
+
+  bool get hasActiveFilters => _query.trim().isNotEmpty || _statusId != null;
+
+  void resetFilters() {
+    _query = '';
+    _statusId = null;
+    notifyListeners();
+  }
+}