45 lines
1.2 KiB
Dart
45 lines
1.2 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:shared_preferences/shared_preferences.dart';
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class AuthProvider with ChangeNotifier {
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String? _token;
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String? _username; // 新增用户名状态
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bool _isAuthenticated = false;
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bool get isAuthenticated => _isAuthenticated;
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String? get token => _token;
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String? get username => _username;
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AuthProvider() {
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_loadAuth();
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}
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void _loadAuth() async {
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final prefs = await SharedPreferences.getInstance();
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_token = prefs.getString('token');
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_username = prefs.getString('username');
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_isAuthenticated = _token != null;
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notifyListeners();
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}
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Future<void> login(String token, String username) async {
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_token = token;
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_username = username;
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_isAuthenticated = true;
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final prefs = await SharedPreferences.getInstance();
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await prefs.setString('token', token);
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await prefs.setString('username', username);
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notifyListeners();
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}
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Future<void> logout() async {
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_token = null;
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_username = null;
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_isAuthenticated = false;
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final prefs = await SharedPreferences.getInstance();
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await prefs.remove('token');
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await prefs.remove('username');
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notifyListeners();
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}
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}
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