68 lines
1.8 KiB
Dart
68 lines
1.8 KiB
Dart
import 'package:flutter/foundation.dart';
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import '../payment/license_service.dart';
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import '../payment/models.dart';
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import '../payment/order_api.dart';
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/// 主界面状态：到期时间展示 + 搜索入口强制校验 + 退出登录
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class HomeViewModel extends ChangeNotifier {
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final LicenseService licenseService;
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LicenseStatus? _license;
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bool _loading = true;
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bool _verifying = false;
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String? _error;
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bool _sessionExpired = false;
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LicenseStatus? get license => _license;
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bool get loading => _loading;
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bool get verifying => _verifying;
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String? get error => _error;
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bool get sessionExpired => _sessionExpired;
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HomeViewModel({required this.licenseService});
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/// 进入主界面/支付返回后刷新（本地缓存优先，服务端为准）
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Future<void> refresh() async {
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_loading = true;
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_error = null;
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notifyListeners();
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try {
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_license = await licenseService.check();
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} catch (_) {
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// check 内部已兜底，这里仅防御
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} finally {
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_loading = false;
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notifyListeners();
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}
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}
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/// 搜索按钮：强制服务端校验授权，active 才允许进入相机。
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/// 网络失败/会话失效一律不放行；返回值表示是否可进入。
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Future<bool> verifyForCamera() async {
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_verifying = true;
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_sessionExpired = false;
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_error = null;
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notifyListeners();
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try {
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final license = await licenseService.verifyServer();
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_license = license;
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return license.isActive;
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} on SessionExpiredException {
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_sessionExpired = true;
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return false;
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} on OrderApiException catch (e) {
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_error = e.message;
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return false;
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} finally {
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_verifying = false;
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notifyListeners();
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}
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}
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void clearSessionExpired() {
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_sessionExpired = false;
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notifyListeners();
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}
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}
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