WhatsApp Desktop Client Code

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

class TicketManager
{
    private static TicketManager _instance;
    private string idBase;

    public static string IdBase
    {
        get
        {
            if (_instance == null)
                _instance = new TicketManager();
            return _instance.idBase;
        }
    }

    public TicketManager()
    {
        idBase = Func.GetNowUnixTimestamp().ToString();
    }

    public static string GenerateId()
    {
        if (_instance == null)
            _instance = new TicketManager();

        return (IdBase + "-" + TicketCounter.NextTicket());
    }
}

public static class TicketCounter
{
    private static int id = -1;

    public static int NextTicket()
    {
        return Interlocked.Increment(ref id);
    }

    public static string MakeId(string prefix)
    {
        int num = NextTicket();
        if (true)
        {
            return (prefix + num);
        }
    }
}