liangchengyou / wow_english

  import 'dart:convert';
  

  import 'package:flutter/foundation.dart';

  import 'package:umeng_common_sdk/umeng_common_sdk.dart';

  import 'package:wow_english/models/user_entity.dart';
  import 'package:wow_english/route/route.dart';
  import 'package:wow_english/utils/sp_util.dart';
  

  import '../../utils/audio_player_util.dart';
  

  class UserUtil {

  
    static const String _prefsKeyUserInfo = "key_user_info";
  

    static UserEntity? _userEntity;
  

    static void saveUser(UserEntity? user) {
      if (user == null) {
        _clearUserData();
        return;
      }

      _userEntity = user;
      _saveUserJson(user.toString());

    }
  
    static UserEntity? getUser() {

      if (_userEntity == null) {
        String? userJson = _getUserJson();
        if (userJson != null && userJson.isNotEmpty) {
          try {
            var userEntity = UserEntity.fromJson(json.decode(userJson));
            // todo 并且在有效期，计算一下, "expireTime": 2592000 倒计时需要手动转换，后面再优化
            _userEntity = userEntity;
          } catch (e) {
            if (kDebugMode) {
              print(e);
            }
            _clearUserData();
          }

        }
      }

      return _userEntity;

    }
  

    static void _saveUserJson(String userJson) {

      SpUtil.getInstance().setData(_prefsKeyUserInfo, userJson);

    }
  

    static String? _getUserJson() {

      return SpUtil.getInstance().get<String>(_prefsKeyUserInfo);

    }
  

    static void _clearUserData() {
      _userEntity = null;

      SpUtil.getInstance().remove(_prefsKeyUserInfo);

    }
  

    static void logout([bool showPasswordLoginPage = false]) {

      _clearUserData();

      // 判断下不在Splash页就跳转
      /*var currentPageName = ModalRoute.of(AppRouter.context)?.settings.name;
      Log.d('当前页面：$currentPageName');
      if (currentPageName != AppRouteName.splash) {
        Navigator.of(AppRouter.context).pushNamedAndRemoveUntil(AppRouteName.login, (route) => false);
      }*/

      UmengCommonSdk.onProfileSignOff();

      AudioPlayerUtil.getInstance().pause();

      pushNamedAndRemoveUntil(AppRouteName.login, (route) => false, arguments: {'showPasswordPage': showPasswordLoginPage});

    }

    // 是否有权限
    static bool hasPermission() {

      return _userEntity?.valid ?? false;
    }
  
    // 是否登录（token是否有效）
    static bool isLogined() {
      return getUserToken().isNotEmpty;
    }
  
    static String getUserToken() {
      return _userEntity?.token ?? '';
    }

  
    // （vip）剩余有效期
    static int getRemainingValidity() {
      return _userEntity?.validDay ?? 0;
    }

  }