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

        public async Task<ArgumentHandleResult> ProcessRsrSetup(string id) {
            string data, header;
            using (var client = new WebClient {
                Headers = {
                    [HttpRequestHeader.UserAgent] = CmApiProvider.UserAgent
                }
            }) {
                data = await client.DownloadStringTaskAsync($"http://www.radiators-champ.com/RSRLiveTiming/ajax.php?action=download_setup&id={id}");
                header = client.ResponseHeaders[@"Content-Disposition"]?.Split(new[] { @"filename=" }, StringSplitOptions.None).ElementAtOrDefault(1)?.Trim();
            }

            if (data == null || header == null) {
                throw new InformativeException(AppStrings.Arguments_CannotInstallCarSetup, AppStrings.Arguments_CannotInstallSetup_Commentary);
            }

            var match = Regex.Match(header, @"^([^_]+_.+)_\d+_\d+_\d+_(.+)\.ini$");
            if (!match.Success) {
                throw new InformativeException(AppStrings.Arguments_CannotInstallCarSetup, AppStrings.Arguments_CannotInstallSetup_CommentaryFormat);
            }

            var ids = match.Groups[1].Value;
            var author = match.Groups[2].Value;

            CarObject car = null;
            TrackObjectBase track = null;

            var splitted = ids.Split(new[] { '_' }, StringSplitOptions.RemoveEmptyEntries);
            for (var i = 1; i < splitted.Length - 1 && (car == null || track == null); i++) {
                var candidateCarId = splitted.Skip(i).JoinToString('_');
                var candidateTrackId = splitted.Take(i).JoinToString('_');
                car = CarsManager.Instance.GetById(candidateCarId);
                track = TracksManager.Instance.GetById(candidateTrackId);
            }

            if (car == null || track == null) {
                throw new InformativeException(AppStrings.Arguments_CannotInstallCarSetup, AppStrings.Arguments_CannotInstallSetup_CommentaryFormat);
            }

            var result = ShowDialog(new SharedEntry {
                Author = author,
                Data = new byte[0],
                EntryType = SharedEntryType.CarSetup,
                Id = header,
                Target = car.DisplayName
            }, applyable: false, additionalButton: AppStrings.Arguments_SaveAsGeneric);

            switch (result) {
                case Choise.Save:
                case Choise.Extra:
                    var filename = FileUtils.EnsureUnique(Path.Combine(FileUtils.GetCarSetupsDirectory(car.Id),
                            result == Choise.Save ? track.Id : CarSetupObject.GenericDirectory, header));
                    Directory.CreateDirectory(Path.GetDirectoryName(filename) ?? "");
                    File.WriteAllText(filename, data);
                    return ArgumentHandleResult.SuccessfulShow;
                default:
                    return ArgumentHandleResult.Failed;
            }
        }