public async Task <OneTimePassword> GenerateOneTimePassword(User user, OnePasswordType kind)
{
Generator = NewGenerator(user);
OneTimePassword password = user.OneTimePasswords
.FirstOrDefault(p => p.IsActive && p.Kind == kind);
if (password != null)
{
return(password);
}
password = new OneTimePassword()
{
Kind = kind
};
user.OneTimePasswords.Add(password);
password.Code = Generator.ComputeHOTP(user.OneTimePasswords.LongCount());
await DataStore.UpdateOneAsync(user);
return(password);
}