internal Task <IdentityResult> DeleteAsync(TUser user, CancellationToken cancellationToken = default)
{
// get the stored user document reference
var doc = UsersSet.Document(user.Id);
return(_db.RunTransactionAsync(async transaction =>
{
var snapshot = await transaction.GetSnapshotAsync(doc, cancellationToken).ConfigureAwait(false);
// check if the user was deleted or updated while running the transaction
if (!snapshot.Exists || snapshot.GetValue <string>("ConcurrencyStamp") != user.ConcurrencyStamp)
{
return IdentityResult.Failed(_errorDescriber.ConcurrencyFailure());
}
// delete the user logins
var loginSnapshots = await UserLogins.WhereEqualTo("UserId", user.Id).GetSnapshotAsync(cancellationToken).ConfigureAwait(false);
if (loginSnapshots.Count > 0)
{
foreach (var login in loginSnapshots)
{
transaction.Delete(login.Reference);
}
}
// delete the user tokens
var tokenSnapshots = await UserTokens.WhereEqualTo("UserId", user.Id).GetSnapshotAsync(cancellationToken).ConfigureAwait(false);
if (tokenSnapshots.Count > 0)
{
foreach (var token in tokenSnapshots)
{
transaction.Delete(token.Reference);
}
}
// delete the user claims
transaction.Delete(UserClaims.Document(user.Id));
transaction.Delete(doc);
return IdentityResult.Success;
}, cancellationToken: cancellationToken));
}
