109 lines
3.0 KiB
Dart
109 lines
3.0 KiB
Dart
import 'dart:convert';
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import 'package:crypto/crypto.dart';
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import 'api_service.dart';
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import 'storage_service.dart';
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import '../core/constants/storage_keys.dart';
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class SiteAnnouncement {
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final String title;
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final String html;
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final String baseUrl;
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final String fingerprint;
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const SiteAnnouncement({
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required this.title,
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required this.html,
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required this.baseUrl,
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required this.fingerprint,
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});
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}
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/// 登录后公告服务。
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///
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/// Cloudreve V4 SiteConfig 的公告字段是 site_notice。
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/// 不读取 custom_html.headless_bottom / sidebar_bottom，那些是页面装饰 HTML。
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///
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/// 弹窗策略：
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/// - 公告为空：不弹；
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/// - 当前公告内容和用户上次关闭时一致：不弹；
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/// - 公告内容变化：重新弹。
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class AnnouncementService {
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AnnouncementService._();
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static final AnnouncementService instance = AnnouncementService._();
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bool _shownInSession = false;
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/// 兼容旧调用。新的判断以持久化 fingerprint 为准。
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bool get hasShown => _shownInSession;
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/// 兼容旧调用。新的业务请使用 [markDismissed]。
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void markShown() {
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_shownInSession = true;
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}
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Future<SiteAnnouncement?> getSiteNotice() async {
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final response = await ApiService.instance.get<Map<String, dynamic>>(
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'/site/config/basic',
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);
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final data = _asMap(response['data']) ?? response;
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final notice = data['site_notice']?.toString().trim();
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if (notice == null || notice.isEmpty) {
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return null;
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}
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final baseUrl = ApiService.instance.dio.options.baseUrl;
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return SiteAnnouncement(
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title: '公告',
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html: notice,
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baseUrl: baseUrl,
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fingerprint: _fingerprint(baseUrl: baseUrl, html: notice),
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);
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}
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/// 只返回需要弹出的公告。
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///
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/// 用户关闭过同一条公告后，后续启动不会重复弹；站点公告内容改变后会再次弹。
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Future<SiteAnnouncement?> getChangedSiteNotice() async {
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final notice = await getSiteNotice();
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if (notice == null) return null;
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if (_shownInSession) return null;
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final dismissedFingerprint = await StorageService.instance.getString(
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StorageKeys.siteAnnouncementDismissedFingerprint,
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);
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if (dismissedFingerprint == notice.fingerprint) {
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_shownInSession = true;
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return null;
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}
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return notice;
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}
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/// 用户关闭公告后调用。
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Future<void> markDismissed(SiteAnnouncement announcement) async {
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_shownInSession = true;
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await StorageService.instance.setString(
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StorageKeys.siteAnnouncementDismissedFingerprint,
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announcement.fingerprint,
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);
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}
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String _fingerprint({required String baseUrl, required String html}) {
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final normalized = '${baseUrl.trim()}\n${html.trim()}';
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return sha256.convert(utf8.encode(normalized)).toString();
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}
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Map<String, dynamic>? _asMap(dynamic value) {
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if (value is Map<String, dynamic>) return value;
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if (value is Map) return Map<String, dynamic>.from(value);
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return null;
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}
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}
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