50 lines
1.2 KiB
Markdown
50 lines
1.2 KiB
Markdown
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# LinksyApp 强制依赖 ChatBloc
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## 问题描述
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`LinksyApp` (app.dart) 作为应用根节点，被迫在 `MultiBlocProvider` 中注入 `ChatBloc`：
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```dart
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return MultiBlocProvider(
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providers: [
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BlocProvider<AuthBloc>.value(value: authBloc),
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BlocProvider<ChatBloc>(
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create: (_) => ChatBloc(apiClient: sl<IApiClient>()),
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),
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],
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...
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);
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```
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这导致：
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1. 应用启动时就创建 `ChatBloc` 实例（内存浪费）
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2. `LinksyApp` 需要知道"存在 ChatBloc 这个 Feature"
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3. 违反单一职责原则：根节点应只负责全局配置，不应了解具体 Feature
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## 根本原因
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`HomeScreen` 是默认首页，其内部需要 `ChatBloc`。为了让它通过 `context.read<ChatBloc>()` 获取，被迫在根节点提供。
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## 正确做法
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ChatBloc 应该在路由级别按需注入：
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```dart
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GoRoute(
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path: '/',
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builder: (context) => BlocProvider(
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create: (_) => ChatBloc(apiClient: sl<IApiClient>()),
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child: const HomeScreen(),
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),
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)
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```
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## 相关文件
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- `apps/lib/app/app.dart`
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- `apps/lib/features/home/presentation/screens/home_screen.dart`
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## 修复优先级
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**中等** - 功能正常但架构不合理，属于技术债
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