public AccountService()
{
_firebaseAuth = CrossFirebaseAuth.Current.Instance;
_firestore = CrossCloudFirestore.Current.Instance;
IsInitialized = _isInitialized.ToReadOnlyReactivePropertySlim();
IsLoggedIn = _isLoggedIn.ToReadOnlyReactivePropertySlim();
UserId = _userId.ToReadOnlyReactivePropertySlim();
UserName = _userName.ToReadOnlyReactivePropertySlim();
UserImage = _userImage.ToReadOnlyReactivePropertySlim();
ContributionCount = _contributionCount.ToReadOnlyReactivePropertySlim();
UserId.Select(userId => string.IsNullOrEmpty(userId) ?
Observable.Return <User>(null) :
_firestore.GetCollection(User.CollectionPath)
.GetDocument(userId)
.AsObservable()
.Select(d => d.ToObject <User>()))
.Switch()
.Subscribe(user =>
{
if (user != null)
{
_userName.Value = user.Name;
_userImage.Value = user.Image;
_contributionCount.Value = user.ContributionCount;
}
else
{
_userName.Value = null;
_userImage.Value = null;
_contributionCount.Value = 0;
}
})
.AddTo(_disposables);
}