Slug Generator

using System;
using System.Text.RegularExpressions;

public class SlugGenerator
{
    public static string GenerateSlug(string title)
    {
        if (string.IsNullOrWhiteSpace(title))
            return string.Empty;

        // Convert to lowercase
        title = title.ToLowerInvariant();

        // Replace whitespaces with dashes
        title = Regex.Replace(title, @"\s+", "-");

        // Remove invalid characters
        title = Regex.Replace(title, @"[^a-z0-9\-]", "");

        // Replace multiple dashes with a single dash
        title = Regex.Replace(title, @"-+", "-");

        // Trim dashes from the ends
        title = title.Trim('-');

        return title;
    }

    public static void Main()
    {
        string productTitle = Console.ReadLine();
        string slug = GenerateSlug(productTitle);
        Console.WriteLine($"Slug: {slug}");
    }
}