ngfchl
135 lines
3.8 KiB
Dart
135 lines
3.8 KiB
Dart
import 'dart:async';
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import 'dart:developer' as developer;
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import 'dart:io';
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import 'package:flutter/foundation.dart';
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import 'package:path/path.dart' as path;
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import 'package:path_provider/path_provider.dart';
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enum AppLogLevel { debug, info, warning, error }
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class AppLogEntry {
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final DateTime timestamp;
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final AppLogLevel level;
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final String scope;
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final String message;
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const AppLogEntry({
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required this.timestamp,
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required this.level,
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required this.scope,
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required this.message,
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});
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String get text =>
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'${timestamp.toIso8601String()} [${_levelLabel(level)}] '
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'[${_scopeLabel(scope)}] $message';
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static String _levelLabel(AppLogLevel level) => switch (level) {
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AppLogLevel.debug => '调试',
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AppLogLevel.info => '信息',
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AppLogLevel.warning => '警告',
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AppLogLevel.error => '错误',
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};
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static String _scopeLabel(String scope) => switch (scope) {
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'HTTP' => '网络',
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'Auth' => '认证',
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'Media' => '媒体库',
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'CloudIndex' => '全盘索引',
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'Player' => '播放器',
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'Storage' => '本地存储',
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'App' => '应用',
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'Flutter' => '界面',
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'Dart' => '运行时',
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_ => scope,
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};
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}
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/// One log sink for debug console, release file diagnostics and the in-app log
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/// viewer. Never write request headers or authorization tokens here.
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class AppLogger {
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static const _maxEntries = 1200;
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static final entries = ValueNotifier<List<AppLogEntry>>(const []);
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static File? _file;
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static Future<void> _pendingWrite = Future.value();
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static Future<void> initialize() async {
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try {
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final directory = await getApplicationSupportDirectory();
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final logsDirectory = Directory(path.join(directory.path, 'logs'));
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await logsDirectory.create(recursive: true);
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_file = File(path.join(logsDirectory.path, 'guangya.log'));
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if (await _file!.exists() && await _file!.length() > 4 * 1024 * 1024) {
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await _file!.rename(
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path.join(logsDirectory.path, 'guangya.previous.log'),
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);
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}
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info('App', '日志中心已初始化：${_file!.path}');
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} catch (error) {
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developer.log('日志中心初始化失败：$error', name: 'Guangya');
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}
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}
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static void debug(String scope, String message) =>
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_write(AppLogLevel.debug, scope, message);
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static void info(String scope, String message) =>
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_write(AppLogLevel.info, scope, message);
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static void warning(String scope, String message) =>
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_write(AppLogLevel.warning, scope, message);
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static void error(
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String scope,
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String message, {
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Object? error,
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StackTrace? stackTrace,
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}) => _write(
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AppLogLevel.error,
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scope,
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error == null ? message : '$message：$error',
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stackTrace: stackTrace,
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);
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static void clear() => entries.value = const [];
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static void _write(
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AppLogLevel level,
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String scope,
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String message, {
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StackTrace? stackTrace,
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}) {
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if (kReleaseMode && level == AppLogLevel.debug) return;
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final entry = AppLogEntry(
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timestamp: DateTime.now(),
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level: level,
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scope: scope,
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message: message,
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);
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final next = [...entries.value, entry];
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entries.value = next.length > _maxEntries
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? next.sublist(next.length - _maxEntries)
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: next;
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developer.log(
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entry.text,
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name: 'Guangya',
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level: switch (level) {
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AppLogLevel.debug => 500,
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AppLogLevel.info => 800,
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AppLogLevel.warning => 900,
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AppLogLevel.error => 1000,
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},
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stackTrace: stackTrace,
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);
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final file = _file;
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if (file == null) return;
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_pendingWrite = _pendingWrite
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.then((_) async {
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await file.writeAsString(
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'${entry.text}${stackTrace == null ? '' : '\n$stackTrace'}\n',
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mode: FileMode.append,
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flush: false,
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);
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})
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.catchError((_) {});
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}
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}
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