/// <summary>
/// Checks if the player's nickname is valid for CnCNet.
/// </summary>
/// <returns>Null if the nickname is valid, otherwise a string that tells
/// what is wrong with the name.</returns>
public static string IsNameValid(string name)
{
var profanityFilter = new ProfanityFilter();
if (string.IsNullOrEmpty(name))
{
return("Please enter a name.");
}
if (profanityFilter.IsOffensive(name))
{
return("Please enter a name that is less offensive.");
}
int number = -1;
if (int.TryParse(name.Substring(0, 1), out number))
{
return("The first character in the player name cannot be a number.");
}
if (name[0] == '-')
{
return("The first character in the player name cannot be a dash ( - ).");
}
// Check that there are no invalid chars
char[] allowedCharacters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_[]|\\{}^`".ToCharArray();
char[] nicknameChars = name.ToCharArray();
foreach (char nickChar in nicknameChars)
{
if (!allowedCharacters.Contains(nickChar))
{
return("Your player name has invalid characters in it." + Environment.NewLine +
"Allowed characters are anything from A to Z and numbers.");
}
}
if (name.Length > ClientConfiguration.Instance.MaxNameLength)
{
return("Your nickname is too long.");
}
return(null);
}