云算力平台windows桌面应用

lib/services/log_service.dart

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+import 'dart:async';
+import 'dart:io';
+import 'package:logging/logging.dart';
+import '../utils/path_utils.dart';
+
+/// 日志服务
+class LogService {
+  static final LogService _instance = LogService._internal();
+  factory LogService() => _instance;
+  LogService._internal();
+
+  final Logger _rootLogger = Logger.root;
+  final StreamController<String> _logController = StreamController<String>.broadcast();
+  IOSink? _logFile;
+
+  Stream<String> get logStream => _logController.stream;
+
+  /// 初始化日志系统
+  Future<void> initialize() async {
+    // 配置日志输出
+    _rootLogger.level = Level.ALL;
+    _rootLogger.onRecord.listen((record) {
+      final message = '[${record.time}] [${record.level.name}] ${record.message}';
+      _logController.add(message);
+      _logToFile(message);
+    });
+
+    // 打开日志文件
+    try {
+      final logDir = Directory(PathUtils.binFile('logs'));
+      if (!await logDir.exists()) {
+        await logDir.create(recursive: true);
+      }
+      
+      final logFile = File(PathUtils.binFile('logs/client.log'));
+      _logFile = logFile.openWrite(mode: FileMode.append);
+    } catch (e) {
+      // 静默失败
+    }
+  }
+
+  /// 写入日志文件
+  void _logToFile(String message) {
+    try {
+      if (_logFile != null) {
+        _logFile!.writeln(message);
+        _logFile!.flush();
+      }
+    } catch (e) {
+      // 忽略写入错误，避免崩溃
+      // print('写入日志文件失败: $e');
+    }
+  }
+
+  /// 获取最新日志（限制行数）
+  Future<String> getRecentLogs({int maxLines = 1000}) async {
+    try {
+      final file = File(PathUtils.binFile('logs/client.log'));
+      if (await file.exists()) {
+        final lines = await file.readAsLines();
+        if (lines.length > maxLines) {
+          return lines.sublist(lines.length - maxLines).join('\n');
+        }
+        return lines.join('\n');
+      }
+    } catch (e) {
+      // 静默失败
+    }
+    return '';
+  }
+
+  /// 清理日志
+  Future<void> clearLogs() async {
+    try {
+      final file = File(PathUtils.binFile('logs/client.log'));
+      if (await file.exists()) {
+        await file.writeAsString('');
+        _logController.add('日志已清理');
+      }
+    } catch (e) {
+      // 静默失败
+    }
+  }
+
+  /// 关闭日志服务
+  Future<void> close() async {
+    await _logFile?.flush();
+    await _logFile?.close();
+    await _logController.close();
+  }
+}