refactor(page): 删除旧版页面文件

lib/features/auth/presentation/auth_controller.dart

@@ -0,0 +1,137 @@
+import 'dart:async';
+
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../../core/storage/token_storage.dart';
+import '../data/auth_providers.dart';
+import '../domain/auth_models.dart';
+import '../domain/auth_state.dart';
+
+/// 认证控制器。
+///
+/// 承载登录 / 注册 / 发送验证码 / 倒计时等全部业务逻辑，UI 仅触发动作并消费状态。
+/// 使用 keepAlive，避免登录流程中页面切换导致状态丢失。
+class AuthController extends Notifier<AuthState> {
+  AuthController();
+
+  Timer? _countdownTimer;
+
+  @override
+  AuthState build() {
+    ref.keepAlive();
+    ref.onDispose(() => _countdownTimer?.cancel());
+    return const AuthState();
+  }
+
+  String get _deviceId => TokenStorage.deviceId;
+
+  /// 密码登录。
+  Future<bool> loginByPassword({
+    required String phone,
+    required String password,
+  }) async {
+    return _run(() => ref.read(authRepositoryProvider).loginByPassword(
+          phone: phone,
+          password: password,
+          deviceId: _deviceId,
+        ));
+  }
+
+  /// 短信登录。
+  Future<bool> loginBySms({
+    required String phone,
+    required String code,
+  }) async {
+    return _run(() => ref.read(authRepositoryProvider).loginBySms(
+          phone: phone,
+          code: code,
+          deviceId: _deviceId,
+        ));
+  }
+
+  /// 注册。
+  Future<bool> register({
+    required String phone,
+    required String code,
+    required String password,
+  }) async {
+    return _run(() => ref.read(authRepositoryProvider).register(
+          phone: phone,
+          code: code,
+          password: password,
+          deviceId: _deviceId,
+        ));
+  }
+
+  /// 发送短信验证码并启动 60s 倒计时。
+  Future<void> sendSmsCode({
+    required String phone,
+    required SmsScene scene,
+  }) async {
+    if (state.isSendingCode || state.countdownSeconds > 0) return;
+    state = state.copyWith(isSendingCode: true, clearAlert: true);
+    try {
+      await ref.read(authRepositoryProvider).sendSmsCode(
+            phone: phone,
+            scene: scene,
+          );
+      _startCountdown();
+    } catch (e) {
+      state = state.copyWith(
+        isSendingCode: false,
+        alert: _messageOf(e),
+      );
+    }
+  }
+
+  /// 消费一次性提示。
+  void consumeAlert() {
+    if (state.alert != null) {
+      state = state.copyWith(clearAlert: true);
+    }
+  }
+
+  /// 登出。
+  void logout() {
+    _countdownTimer?.cancel();
+    TokenStorage.clear();
+    state = const AuthState();
+  }
+
+  Future<bool> _run(Future<LoginResult> Function() action) async {
+    state = state.copyWith(isLoading: true, clearAlert: true);
+    try {
+      await action();
+      state = state.copyWith(isLoading: false);
+      return true;
+    } catch (e) {
+      state = state.copyWith(isLoading: false, alert: _messageOf(e));
+      return false;
+    }
+  }
+
+  void _startCountdown() {
+    state = state.copyWith(isSendingCode: false, countdownSeconds: 60);
+    _countdownTimer?.cancel();
+    _countdownTimer = Timer.periodic(const Duration(seconds: 1), (timer) {
+      final left = state.countdownSeconds - 1;
+      if (left <= 0) {
+        timer.cancel();
+        state = state.copyWith(countdownSeconds: 0);
+      } else {
+        state = state.copyWith(countdownSeconds: left);
+      }
+    });
+  }
+
+  String _messageOf(Object e) {
+    if (e is Exception) {
+      return e.toString().replaceFirst('Exception: ', '');
+    }
+    return '操作失败，请稍后重试';
+  }
+}
+
+/// 认证控制器 Provider（会话级 keepAlive 在 build 内通过 ref.keepAlive 实现）。
+final authControllerProvider =
+    NotifierProvider<AuthController, AuthState>(AuthController.new);