Initial commit: 风影 OA 全栈源码（API/Web/Flutter/IM）

含 Phase 1.1 IM seq 排序、断线重连、多端已读同步与微信式语音转文字 UI。排除 node_modules、构建产物、安装包与 .env 密钥。 Co-authored-by: Cursor <cursoragent@cursor.com>
2026-09-02 10:04:03 +00:00
commit 76f266645d
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+import 'dart:convert';
+
+import 'package:shared_preferences/shared_preferences.dart';
+
+/// 聊天消息的本地副本。云端只保留 7 天，客户端仍可查看本机历史消息。
+class ChatLocalStore {
+  ChatLocalStore._();
+
+  static Future<List<Map<String, dynamic>>> load(String conversationId) async {
+    if (conversationId.isEmpty) return [];
+    final p = await SharedPreferences.getInstance();
+    final raw = p.getString('im.local.$conversationId');
+    if (raw == null || raw.isEmpty) return [];
+    try {
+      final list = jsonDecode(raw);
+      if (list is! List) return [];
+      return list.whereType<Map>().map((e) => Map<String, dynamic>.from(e)).toList();
+    } catch (_) {
+      return [];
+    }
+  }
+
+  static Future<void> save(String conversationId, List<Map<String, dynamic>> items) async {
+    if (conversationId.isEmpty) return;
+    final p = await SharedPreferences.getInstance();
+    final durable = items.where((e) => e['_pending'] != true).map((e) {
+      final copy = Map<String, dynamic>.from(e)..remove('_pending');
+      return copy;
+    }).toList();
+    await p.setString('im.local.$conversationId', jsonEncode(durable));
+  }
+}