added logic for detail

lib/data/services/tender_detail_service.dart

@@ -0,0 +1,34 @@
+import 'dart:convert';
+
+import 'package:dio/dio.dart';
+import 'package:tm_app/core/utils/logger.dart';
+import 'package:tm_app/core/utils/result.dart';
+import 'package:tm_app/data/services/mock_data/tender_detail_mock.dart';
+import 'package:tm_app/data/services/model/tender_detail_response/tender_detail_response_model.dart';
+import 'package:tm_app/data/services/network_manager.dart';
+
+class TenderDetailService {
+  TenderDetailService({required NetworkManager networkManager})
+      : _networkManager = networkManager;
+
+  final NetworkManager _networkManager;
+
+  Future<Result<TenderDetailResponseModel>> getTenderDetail({required String id}) async {
+    try {
+      await Future.delayed(Duration(seconds: 2)); // شبیه سازی لود
+      appLogger.info('get tender detail success');
+
+      return Result.ok(
+        TenderDetailResponseModel.fromJson(
+          jsonDecode(tenderDetailMockData)['data'],
+        ),
+      );
+    } on DioException catch (e) {
+      appLogger.error('get tender detail failed: $e');
+      return Result.error(e);
+    } on Exception catch (e, stackTrace) {
+      appLogger.error('get tender detail failed: $e', stackTrace: stackTrace);
+      return Result.error(Exception(e));
+    }
+  }
+}