AcManager.Tools.ArgumentsHandler.ProcessInputFile C# (CSharp) Method

        private async Task<ArgumentHandleResult> ProcessInputFile(string filename) {
            var isDirectory = FileUtils.IsDirectory(filename);
            if (!isDirectory && filename.EndsWith(@".acreplay", StringComparison.OrdinalIgnoreCase) ||
                    Path.GetDirectoryName(filename)?.Equals(FileUtils.GetReplaysDirectory(), StringComparison.OrdinalIgnoreCase) == true) {
                await GameWrapper.StartReplayAsync(new Game.StartProperties(new Game.ReplayProperties {
                    Filename = filename
                }));
                return ArgumentHandleResult.Successful;
            }

            if (!isDirectory && filename.EndsWith(@".kn5", StringComparison.OrdinalIgnoreCase)) {
                await CustomShowroomWrapper.StartAsync(filename);
                return ArgumentHandleResult.Successful;
            }

            try {
                new InstallAdditionalContentDialog(filename).ShowDialog();
            } catch (Exception e) {
                NonfatalError.Notify(AppStrings.Arguments_CannotInstallAdditionalContent, e);
                return ArgumentHandleResult.Failed;
            }

            return ArgumentHandleResult.Successful;
        }