Connected.Framework/Connected.Security/SecurityExtensions.cs

using Connected.Security.Identity;

namespace Connected.Security;

public static class SecurityExtensions
{
	public static string DisplayName(this IUser user)
	{
		if (user is null)
			return null;

		string fn = FullName(user.FirstName, user.LastName);

		if (!string.IsNullOrWhiteSpace(fn))
			return fn;

		if (!string.IsNullOrWhiteSpace(user.LoginName))
			return user.LoginName;

		if (user.Email?.Contains('@') == true)
			return user.Email[..user.Email.IndexOf('@')];

		return user.Id.ToString();
	}

	public static string FullName(string firstName, string lastName)
	{
		return $"{firstName} {lastName}".Trim();
	}

}