osu/osu.Desktop/Program.cs

// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.

#nullable disable

using System;
using System.IO;
using System.Runtime.Versioning;
using osu.Desktop.LegacyIpc;
using osu.Framework;
using osu.Framework.Development;
using osu.Framework.Logging;
using osu.Framework.Platform;
using osu.Game;
using osu.Game.IPC;
using osu.Game.Tournament;
using SDL2;
using Squirrel;

namespace osu.Desktop
{
    public static class Program
    {
        private const string base_game_name = @"osu";

        private static LegacyTcpIpcProvider legacyIpc;

        [STAThread]
        public static void Main(string[] args)
        {
            // run Squirrel first, as the app may exit after these run
            if (OperatingSystem.IsWindows())
            {
                var windowsVersion = Environment.OSVersion.Version;

                // While .NET 6 still supports Windows 7 and above, we are limited by realm currently, as they choose to only support 8.1 and higher.
                // See https://www.mongodb.com/docs/realm/sdk/dotnet/#supported-platforms
                if (windowsVersion.Major < 6 || (windowsVersion.Major == 6 && windowsVersion.Minor <= 2))
                {
                    SDL.SDL_ShowSimpleMessageBox(SDL.SDL_MessageBoxFlags.SDL_MESSAGEBOX_ERROR,
                        "Your operating system is too old to run osu!",
                        "This version of osu! requires at least Windows 8.1 to run.\nPlease upgrade your operating system or consider using an older version of osu!.", IntPtr.Zero);
                    return;
                }

                setupSquirrel();
            }

            // Back up the cwd before DesktopGameHost changes it
            string cwd = Environment.CurrentDirectory;

            string gameName = base_game_name;
            bool tournamentClient = false;

            foreach (string arg in args)
            {
                string[] split = arg.Split('=');

                string key = split[0];
                string val = split.Length > 1 ? split[1] : string.Empty;

                switch (key)
                {
                    case "--tournament":
                        tournamentClient = true;
                        break;

                    case "--debug-client-id":
                        if (!DebugUtils.IsDebugBuild)
                            throw new InvalidOperationException("Cannot use this argument in a non-debug build.");

                        if (!int.TryParse(val, out int clientID))
                            throw new ArgumentException("Provided client ID must be an integer.");

                        gameName = $"{base_game_name}-{clientID}";
                        break;
                }
            }

            using (DesktopGameHost host = Host.GetSuitableDesktopHost(gameName, new HostOptions { BindIPC = true }))
            {
                if (!host.IsPrimaryInstance)
                {
                    if (trySendIPCMessage(host, cwd, args))
                        return;

                    // we want to allow multiple instances to be started when in debug.
                    if (!DebugUtils.IsDebugBuild)
                    {
                        Logger.Log(@"osu! does not support multiple running instances.", LoggingTarget.Runtime, LogLevel.Error);
                        return;
                    }
                }

                if (host.IsPrimaryInstance)
                {
                    try
                    {
                        Logger.Log("Starting legacy IPC provider...");
                        legacyIpc = new LegacyTcpIpcProvider();
                        legacyIpc.Bind();
                    }
                    catch (Exception ex)
                    {
                        Logger.Error(ex, "Failed to start legacy IPC provider");
                    }
                }

                if (tournamentClient)
                    host.Run(new TournamentGame());
                else
                    host.Run(new OsuGameDesktop(args));
            }
        }

        private static bool trySendIPCMessage(IIpcHost host, string cwd, string[] args)
        {
            if (args.Length == 1 && args[0].StartsWith(OsuGameBase.OSU_PROTOCOL, StringComparison.Ordinal))
            {
                var osuSchemeLinkHandler = new OsuSchemeLinkIPCChannel(host);
                if (!osuSchemeLinkHandler.HandleLinkAsync(args[0]).Wait(3000))
                    throw new IPCTimeoutException(osuSchemeLinkHandler.GetType());

                return true;
            }

            if (args.Length > 0 && args[0].Contains('.')) // easy way to check for a file import in args
            {
                var importer = new ArchiveImportIPCChannel(host);

                foreach (string file in args)
                {
                    Console.WriteLine(@"Importing {0}", file);
                    if (!importer.ImportAsync(Path.GetFullPath(file, cwd)).Wait(3000))
                        throw new IPCTimeoutException(importer.GetType());
                }

                return true;
            }

            return false;
        }

        [SupportedOSPlatform("windows")]
        private static void setupSquirrel()
        {
            SquirrelAwareApp.HandleEvents(onInitialInstall: (_, tools) =>
            {
                tools.CreateShortcutForThisExe();
                tools.CreateUninstallerRegistryEntry();
            }, onAppUpdate: (_, tools) =>
            {
                tools.CreateUninstallerRegistryEntry();
            }, onAppUninstall: (_, tools) =>
            {
                tools.RemoveShortcutForThisExe();
                tools.RemoveUninstallerRegistryEntry();
            }, onEveryRun: (_, _, _) =>
            {
                // While setting the `ProcessAppUserModelId` fixes duplicate icons/shortcuts on the taskbar, it currently
                // causes the right-click context menu to function incorrectly.
                //
                // This may turn out to be non-required after an alternative solution is implemented.
                // see https://github.com/clowd/Clowd.Squirrel/issues/24
                // tools.SetProcessAppUserModelId();
            });
        }
    }
}