FlutterOSC/lib/util/DataUtils.dart

import 'package:shared_preferences/shared_preferences.dart';
import 'dart:async';
import '../model/UserInfo.dart';

class DataUtils {
  static final String SP_AC_TOKEN = "accessToken";
  static final String SP_RE_TOKEN = "refreshToken";
  static final String SP_UID = "uid";
  static final String SP_IS_LOGIN = "isLogin";
  static final String SP_EXPIRES_IN = "expiresIn";
  static final String SP_TOKEN_TYPE = "tokenType";

  static final String SP_USER_NAME = "name";
  static final String SP_USER_ID = "id";
  static final String SP_USER_LOC = "location";
  static final String SP_USER_GENDER = "gender";
  static final String SP_USER_AVATAR = "avatar";
  static final String SP_USER_EMAIL = "email";
  static final String SP_USER_URL = "url";

  // 保存用户登录信息，data中包含了token等信息
  static saveLoginInfo(Map data) async {
    if (data != null) {
      SharedPreferences sp = await SharedPreferences.getInstance();
      String accessToken = data['access_token'];
      await sp.setString(SP_AC_TOKEN, accessToken);
      String refreshToken = data['refresh_token'];
      await sp.setString(SP_RE_TOKEN, refreshToken);
      num uid = data['uid'];
      await sp.setInt(SP_UID, uid);
      String tokenType = data['tokenType'];
      await sp.setString(SP_TOKEN_TYPE, tokenType);
      num expiresIn = data['expires_in'];
      await sp.setInt(SP_EXPIRES_IN, expiresIn);

      await sp.setBool(SP_IS_LOGIN, true);
    }
  }

  static clearLoginInfo() async {
    SharedPreferences sp = await SharedPreferences.getInstance();
    await sp.setString(SP_AC_TOKEN, "");
    await sp.setString(SP_RE_TOKEN, "");
    await sp.setInt(SP_UID, -1);
    await sp.setString(SP_TOKEN_TYPE, "");
    await sp.setInt(SP_EXPIRES_IN, -1);
    await sp.setBool(SP_IS_LOGIN, false);
  }

  // 保存用户个人信息
  static Future<UserInfo> saveUserInfo(Map data) async {
    if (data != null) {
      SharedPreferences sp = await SharedPreferences.getInstance();
      String name = data['name'];
      num id = data['id'];
      String gender = data['gender'];
      String location = data['location'];
      String avatar = data['avatar'];
      String email = data['email'];
      String url = data['url'];
      await sp.setString(SP_USER_NAME, name);
      await sp.setInt(SP_USER_ID, id);
      await sp.setString(SP_USER_GENDER, gender);
      await sp.setString(SP_USER_AVATAR, avatar);
      await sp.setString(SP_USER_LOC, location);
      await sp.setString(SP_USER_EMAIL, email);
      await sp.setString(SP_USER_URL, url);
      UserInfo userInfo = UserInfo(
        id: id,
        name: name,
        gender: gender,
        avatar: avatar,
        email: email,
        location: location,
        url: url
      );
      return userInfo;
    }
    return null;
  }

  // 获取用户信息
  static Future<UserInfo> getUserInfo() async {
    SharedPreferences sp = await SharedPreferences.getInstance();
    bool isLogin = sp.getBool(SP_IS_LOGIN);
    if (isLogin == null || !isLogin) {
      return null;
    }
    UserInfo userInfo = UserInfo();
    userInfo.id = sp.getInt(SP_USER_ID);
    userInfo.name = sp.getString(SP_USER_NAME);
    userInfo.avatar = sp.getString(SP_USER_AVATAR);
    userInfo.email = sp.getString(SP_USER_EMAIL);
    userInfo.location = sp.getString(SP_USER_LOC);
    userInfo.gender = sp.getString(SP_USER_GENDER);
    userInfo.url = sp.getString(SP_USER_URL);
    return userInfo;
  }

  static Future<bool> isLogin() async {
    SharedPreferences sp = await SharedPreferences.getInstance();
    bool b = sp.getBool(SP_IS_LOGIN);
    return b != null && b;
  }

  static Future<String> getAccessToken() async {
    SharedPreferences sp = await SharedPreferences.getInstance();
    return sp.getString(SP_AC_TOKEN);
  }

}