liangchengyou / wow_english

  import 'dart:convert';
  
  import 'package:flutter/material.dart';
  import 'package:wow_english/common/core/const.dart';
  import 'package:wow_english/models/user_entity.dart';
  import 'package:wow_english/route/route.dart';
  import 'package:wow_english/utils/sp_util.dart';
  
  class UserUtil {
    static String token = '';
  

    static void saveUser(UserEntity user) {

      token = user.token;

      saveUserJson(user.toString());

    }
  
    static UserEntity? getUser() {
      String? userJson = getUserJson();
      if (userJson != null && userJson.isNotEmpty) {
        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
        if (userEntity.token.isNotEmpty) {
          token = userEntity.token;
          return userEntity;
        } else {
          // token为空或失效的，清除sp
          clearUserSp();
        }
      }
      return null;
    }
  

    static void saveUserJson(String userJson) {

      SpUtil.getInstance().setData(SpConst.prefsKeyUserInfo, userJson);
    }
  
    static String? getUserJson() {
      return SpUtil.getInstance().get<String>(SpConst.prefsKeyUserInfo);
    }
  

    static void clearUserSp() {

      token = '';
      SpUtil.getInstance().remove(SpConst.prefsKeyUserInfo);
    }
  

    static void logout() {

      clearUserSp();
      Navigator.of(AppRouter.context).push(AppRouteName.login as Route<Object?>);
    }
  }