using System;
using System.Net;
using System.Threading.Tasks;

namespace StreamPlayer.Desktop.Services;

public static class DnsHelper
{
    private static readonly string[] DomainsToPrefetch =
    {
        "streamtpmedia.com",
        "google.com",
        "doubleclick.net"
    };

    public static void WarmUp()
    {
        ServicePointManager.DnsRefreshTimeout = (int)TimeSpan.FromMinutes(5).TotalMilliseconds;
        _ = Task.Run(async () =>
        {
            foreach (var domain in DomainsToPrefetch)
            {
                try
                {
                    await Dns.GetHostAddressesAsync(domain).ConfigureAwait(false);
                }
                catch
                {
                    // Ignore individual failures, this is best-effort caching.
                }
            }
        });
    }
}