SMS recipient filter testing, C#

SMS recipient filter testing

//Title of this code
//Rextester.Program.Main is the entry point for your code. Don't change it.

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

namespace Rextester
{
    public class Program
    {
        
        private static readonly Regex configValueExtrator = new Regex(@"(?:restrict=)(true|false)\|?(?:recipients=)(?:,?(\+?\d{8,10}))*");
        private static readonly string config = "restrict=true|recipients=48995764,97063710,01234567";
        public static void Main(string[] args)
        {
            ParseConfigString(config);
            
            Console.WriteLine("Restrict = {0}", Restrict ? "true" : "false");
            foreach(var recipient in ValidRecipients){
                Console.WriteLine(recipient);
            }
        }
        
        private static bool _restrict = true;
        public static bool Restrict
        {
            get{ return _restrict;}
            private set { _restrict = value; }
        }

private static List<string> _validRecipients = new List<string>();
        public static IEnumerable<string> ValidRecipients
        {
            get { return _validRecipients; }
            private set { _validRecipients = value.ToList(); }
        }

public static void ParseConfigString(string config)
        {
            var matches = configValueExtrator.Matches(config);

if (matches.Count < 1)
            {
                return;
            }

var match = matches[0];
            if (match.Groups.Count < 3)
            {
                return;
            }

_restrict = !match.Groups[1].Value.Equals("false");

foreach (Capture capture in match.Groups[2].Captures)
            {
                _validRecipients.Add(capture.Value);
            }

}
        
    }
}


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