Strings, Dictionaries, Lambda and LINQ - 05. URL Parser

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;

class URLParser
{
    static void Main()
    {
        string input = Console.ReadLine();
        string pattern = @"(www|http|https|ftp)(\.|:\/\/)([a-z]+.[a-z]+.[a-z]+)(\/?)((.?)+)";
        Regex regex = new Regex(pattern);
        Match matcher = regex.Match(input);
        string www = matcher.Groups[1].ToString();
        //string protocol = "";
        //string server = "";
        //string resource = "";

        if (www.Equals("www"))
        {
            Console.WriteLine("[protocol] = \"\"");
            Console.WriteLine("[server] = \"{0}\"", input);
            Console.WriteLine("[resource] = \"\"");
        }
        else
        {
            Console.WriteLine("[protocol] = \"{0}\"", matcher.Groups[1]);
            Console.WriteLine("[server] = \"{0}\"", matcher.Groups[3]);
            Console.WriteLine("[resource] = \"{0}\"", matcher.Groups[5]);
        }
    }
}