RMafia/MafiaClient/App.axaml.cs

using Avalonia;
using Avalonia.Controls.ApplicationLifetimes;
using Avalonia.Markup.Xaml;
using DiscordRPC;
using DiscordRPC.Logging;
using DiscordRPC.Message;

namespace MafiaClient
{
    public class App : Application
    {
        public override void Initialize()
        {
            Instance = this;
            AvaloniaXamlLoader.Load(this);
        }

        public override void OnFrameworkInitializationCompleted()
        {
            if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
            {
                _rpcClient = new DiscordRpcClient("800016130097152000", autoEvents: true);
                _rpcClient.RegisterUriScheme();
                _rpcClient.Logger = new ConsoleLogger() { Level = LogLevel.Warning };
                _rpcClient.OnJoinRequested += RpcClientOnOnJoinRequested;
                _rpcClient.OnJoin += RpcClientOnOnJoin;
                _rpcClient.SetSubscription(EventType.Join | EventType.JoinRequest);
                _rpcClient.Initialize();
                _rpcClient.SetPresence(new RichPresence()
                {
                    State = "Запуск игры..."
                });
                
                desktop.MainWindow = new MainWindow();
                
                Settings.Initialize();
                Settings.Save();
            }

            base.OnFrameworkInitializationCompleted();
        }
        
        public static App Instance;
        
        private DiscordRpcClient _rpcClient;

        public ServerConnection Connection;

        public DiscordRpcClient GetRpcClient()
        {
            return _rpcClient;
        }

        private void RpcClientOnOnJoin(object sender, JoinMessage args)
        {
            string secret = args.Secret;
            Connection = new ServerConnection(secret.Replace("/join", ""));
        }

        private void RpcClientOnOnJoinRequested(object sender, JoinRequestMessage args)
        {
            _rpcClient.Respond(args, true);
        }
    }
}