Scoped Model for User

user_model.dart

// Copyright 2018 zerox1212. All rights reserved.
// Use of this source code is governed by the MIT license that can be found
// in the LICENSE file.

import 'dart:async';
import 'dart:io';
import 'package:scoped_model/scoped_model.dart';
import 'package:firebase_auth/firebase_auth.dart';


class UserModel extends Model {
  final FirebaseAuth _auth = FirebaseAuth.instance;
  FirebaseUser _user;
  FirebaseUser get user => _user;

  Future<Null> logInAnonymously() async {
    _user = await _auth.signInAnonymously();
    assert(_user != null);
    assert(_user.isAnonymous);
    assert(!_user.isEmailVerified);
    assert(await _user.getIdToken() != null);
    if (Platform.isIOS) {
      // Anonymous auth doesn't show up as a provider on iOS
      assert(_user.providerData.isEmpty);
    } else if (Platform.isAndroid) {
      // Anonymous auth does show up as a provider on Android
      assert(_user.providerData.length == 1);
      assert(_user.providerData[0].providerId == 'firebase');
      assert(_user.providerData[0].uid != null);
      assert(_user.providerData[0].displayName == null);
      assert(_user.providerData[0].photoUrl == null);
      assert(_user.providerData[0].email == null);
    }

    final FirebaseUser currentUser = await _auth.currentUser();
    assert(_user.uid == currentUser.uid);

    notifyListeners();
  }

  Future<Null> logOut() async {
    await _auth.signOut();
    _user = null;

    notifyListeners();
    }