public void Execute(List <string> parameter)
{
RegistrationResult registrationResult = _userFileManager.Register(parameter[0], parameter[1], parameter[2]);
switch (registrationResult)
{
case RegistrationResult.InvalidUsername:
Console.WriteLine("Username already exists");
break;
case RegistrationResult.NotMatchingPassword:
Console.WriteLine("Passwords dont match");
break;
case RegistrationResult.Success:
Console.WriteLine("Done");
break;
}
}