public async Task<int?> ImportContactByPhoneNumber(string phoneNumber)
{
if (!validateNumber(phoneNumber))
throw new InvalidOperationException("Invalid phone number. It should be only digit string, from 5 to 20 digits.");
var request = new ImportContactRequest(new InputPhoneContactConstructor(0, phoneNumber, "My Test Name", String.Empty));
await _sender.Send(request);
await _sender.Recieve(request);
var importedUser = (ImportedContactConstructor)request.imported.FirstOrDefault();
return importedUser?.user_id;
}
public async Task<int?> ImportContact(string phoneNumber)
{
var request = new ImportContactRequest(new InputPhoneContactConstructor(0, phoneNumber, "My Test Name", string.Empty));
await _sender.Send(request);
await _sender.Recieve(request);
var importedUser = request.users.FirstOrDefault();
return importedUser == null ? (int?) null : ((UserContactConstructor) importedUser).id;
}