139 lines
4.1 KiB
Dart
139 lines
4.1 KiB
Dart
import 'package:dio/dio.dart';
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import 'package:yx_tracking_flutter/src/config/analytics_config.dart';
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import 'package:yx_tracking_flutter/src/model/system_dim_info.dart';
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import 'package:yx_tracking_flutter/src/network/http_client.dart';
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import 'package:yx_tracking_flutter/src/storage/config_storage.dart';
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import 'package:yx_tracking_flutter/src/storage/sqflite_config_storage.dart';
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import 'package:yx_tracking_flutter/src/util/logger.dart';
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/// Phase 2：配置拉取与缓存管理。
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class ConfigManager {
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/// 创建配置管理器。
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ConfigManager({
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required this.config,
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this.refreshInterval = const Duration(hours: 12),
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ConfigStorage? storage,
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HttpClient? httpClient,
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}) : _httpClient = httpClient ?? HttpClient(config),
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_storage = storage ?? SqfliteConfigStorage();
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/// SDK 配置。
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final AnalyticsConfig config;
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/// 配置刷新间隔。
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final Duration refreshInterval;
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final HttpClient _httpClient;
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final ConfigStorage _storage;
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SystemDimInfo? _current;
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/// 当前缓存的配置（可能为空）。
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SystemDimInfo? get currentConfig => _current;
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/// 初始化本地缓存。
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Future<void> init() async {
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await _storage.init();
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_current = await _storage.loadSystemDimInfo();
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if (_current != null) {
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final eventCount = _current!.eventDefinitions.length;
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final tagCount = _current!.tagDefinitions.length;
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Logger.info(
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'已加载本地配置缓存: events=$eventCount, tags=$tagCount',
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);
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}
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}
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/// 拉取并缓存配置。
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Future<void> fetchAndCacheConfig({bool force = false}) async {
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if (!force && _shouldSkipFetch()) {
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final last = _current?.lastFetchedAt;
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Logger.info('配置未过期，跳过拉取: lastFetchedAt=$last');
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return;
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}
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try {
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final response = await _httpClient.get<dynamic>(
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config.getSystemAllDimInfoUri.toString(),
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queryParameters: <String, dynamic>{'systemCode': config.systemCode},
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);
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final payload = _extractPayloadMap(response.data);
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if (payload == null) {
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Logger.warn('配置拉取成功但响应结构无法解析，已忽略');
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return;
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}
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final version = response.headers.value('etag') ??
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response.headers.value('x-config-version');
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final info = SystemDimInfo.fromResponse(payload, version: version);
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await _storage.saveSystemDimInfo(info);
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_current = info;
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final eventCount = info.eventDefinitions.length;
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final tagCount = info.tagDefinitions.length;
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Logger.info(
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'配置拉取并缓存成功: events=$eventCount, tags=$tagCount',
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);
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} on DioException catch (e, st) {
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Logger.error('配置拉取失败（DioException）', e, st);
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} on Object catch (e, st) {
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Logger.error('配置拉取失败（未知异常）', e, st);
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}
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}
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/// 强制刷新配置。
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Future<void> forceRefresh() => fetchAndCacheConfig(force: true);
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/// 释放资源。
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Future<void> dispose() => _storage.dispose();
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bool _shouldSkipFetch() {
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final current = _current;
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if (current == null) {
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return false;
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}
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final age = DateTime.now().difference(current.lastFetchedAt);
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return age < refreshInterval;
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}
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Map<String, dynamic>? _extractPayloadMap(dynamic data) {
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final root = _asStringKeyMap(data);
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if (root == null) {
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return null;
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}
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if (_looksLikeDimInfo(root)) {
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return root;
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}
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for (final key in const <String>['data', 'result', 'payload']) {
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final nested = _asStringKeyMap(root[key]);
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if (nested != null && _looksLikeDimInfo(nested)) {
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return nested;
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}
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}
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Logger.warn('配置响应结构无法识别，已忽略');
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return null;
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}
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bool _looksLikeDimInfo(Map<String, dynamic> map) {
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return map.containsKey('systemEventTypes') ||
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map.containsKey('systemCustonTas') ||
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map.containsKey('systemCustomTags');
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}
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Map<String, dynamic>? _asStringKeyMap(dynamic value) {
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if (value is Map<String, dynamic>) {
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return value;
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}
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if (value is Map) {
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return value.map((k, v) => MapEntry(k.toString(), v));
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}
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return null;
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}
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}
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