feat: 实现日历提醒 in-app fallback 机制及通知服务重构

2026-03-20 01:30:34 +08:00
parent 7fd536e976
commit d574128815
55 changed files with 4565 additions and 647 deletions
@@ -0,0 +1,49 @@
+import '../../../users/data/models/user_response.dart';
+
+class SettingsUserCache {
+  UserResponse? _cachedUser;
+  Future<UserResponse>? _inflight;
+  int _generation = 0;
+
+  UserResponse? get cachedUser => _cachedUser;
+
+  Future<UserResponse> getOrLoad(Future<UserResponse> Function() loader) {
+    final cached = _cachedUser;
+    if (cached != null) {
+      return Future<UserResponse>.value(cached);
+    }
+
+    final inflight = _inflight;
+    if (inflight != null) {
+      return inflight;
+    }
+
+    final generation = _generation;
+    late final Future<UserResponse> request;
+    request = loader()
+        .then((user) {
+          if (generation == _generation) {
+            _cachedUser = user;
+          }
+          return user;
+        })
+        .whenComplete(() {
+          if (identical(_inflight, request)) {
+            _inflight = null;
+          }
+        });
+
+    _inflight = request;
+    return request;
+  }
+
+  void set(UserResponse user) {
+    _cachedUser = user;
+  }
+
+  void invalidate() {
+    _generation += 1;
+    _cachedUser = null;
+    _inflight = null;
+  }
+}