first commit

2026-09-21 17:37:53 +08:00
commit 67d4dd5b7c
141 changed files with 8558 additions and 0 deletions
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+import 'dart:convert';
+
+import 'package:shared_preferences/shared_preferences.dart';
+
+/// 本地存储封装：token / userInfo / 记住密码
+/// （对齐 uniApp 的 uni.setStorageSync / getStorageSync 用法）
+class LocalStorage {
+  LocalStorage._();
+
+  static final LocalStorage instance = LocalStorage._();
+
+  SharedPreferences? _prefs;
+
+  /// App 启动时调用一次，确保后续同步读取可用
+  Future<void> init() async {
+    _prefs ??= await SharedPreferences.getInstance();
+  }
+
+  Future<SharedPreferences> _getPrefs() async {
+    return _prefs ??= await SharedPreferences.getInstance();
+  }
+
+  // ---- 认证 ----
+  static const _keyToken = 'token';
+  static const _keyUserInfo = 'userInfo';
+
+  Future<void> setAuth({required String token, required Map<String, dynamic> userInfo}) async {
+    final prefs = await _getPrefs();
+    await prefs.setString(_keyToken, token);
+    await prefs.setString(_keyUserInfo, jsonEncode(userInfo));
+  }
+
+  Future<void> clearAuth() async {
+    final prefs = await _getPrefs();
+    await prefs.remove(_keyToken);
+    await prefs.remove(_keyUserInfo);
+  }
+
+  String? getToken() => _prefs?.getString(_keyToken);
+
+  Map<String, dynamic>? getUserInfo() {
+    final raw = _prefs?.getString(_keyUserInfo);
+    if (raw == null) return null;
+    try {
+      return jsonDecode(raw) as Map<String, dynamic>;
+    } catch (_) {
+      return null;
+    }
+  }
+
+  // ---- 记住密码 ----
+  static const _keySavedUsername = 'saved_username';
+  static const _keySavedPassword = 'saved_password';
+
+  Future<void> saveRememberedPassword(String username, String encryptedPassword) async {
+    final prefs = await _getPrefs();
+    await prefs.setString(_keySavedUsername, username);
+    await prefs.setString(_keySavedPassword, encryptedPassword);
+  }
+
+  Future<void> clearRememberedPassword() async {
+    final prefs = await _getPrefs();
+    await prefs.remove(_keySavedUsername);
+    await prefs.remove(_keySavedPassword);
+  }
+
+  ({String username, String password})? getRememberedAccount() {
+    final username = _prefs?.getString(_keySavedUsername);
+    final password = _prefs?.getString(_keySavedPassword);
+    if (username == null || password == null) return null;
+    return (username: username, password: password);
+  }
+}