void Locate()

in Clients/Xamarin.Interactive.Client.Mac/SystemInformation/VisualStudioForMacComponent.cs [136:208]
56 lines of code
18 McCabe index (conditional complexity)

        void Locate ()
        {
            var bundlePath = NSWorkspace.SharedWorkspace.AbsolutePathForAppBundle (bundleId);
            if (bundlePath == null)
                return;

            Bundle = NSBundle.FromPath (bundlePath);
            if (Bundle == null)
                return;

            AppPath = Bundle.BundlePath;

            if (!Bundle.InfoDictionary.TryGetValue (
                new NSString ("CFBundleName"), out var nameOut) || nameOut == null)
                return;

            Name = nameOut.ToString ();

            if (!Bundle.InfoDictionary.TryGetValue (
                new NSString ("CFBundleVersion"), out var versionOut) || versionOut == null)
                return;

            Version = versionOut.ToString ();
            System.Version.TryParse (Version, out var sysVersion);

            var updateinfoPath = new FilePath (bundlePath).Combine ("Contents", "MacOS", "updateinfo");
            if (updateinfoPath.FileExists) {
                var updateinfo = XamarinComponent.ReadUpdateinfoFile (updateinfoPath);
                if (updateinfo != null)
                    Version += $" ({updateinfo})";
            }

            var libraryUrl = NSFileManager.DefaultManager.GetUrl (
                NSSearchPathDirectory.LibraryDirectory,
                NSSearchPathDomain.User,
                null,
                false,
                out var error);

            if (error != null)
                throw new NSErrorException (error);

            if (libraryUrl == null)
                throw new DirectoryNotFoundException ("unable to locate user Library directory");

            if (sysVersion == null)
                return;

            var isVsm = bundleId == VSMacBundleId;

            // Do not entertain any of the very first VSM preview releases
            if (isVsm && sysVersion < firstStableVSMVersion)
                return;

            foreach (var compatVersion in new [] {
                $"{sysVersion.Major}.{sysVersion.Minor}",
                $"{sysVersion.Major}.0" }) {
                if (isVsm)
                    PreferencesDirectory = new FilePath (libraryUrl.Path).Combine (
                        "Preferences",
                        "VisualStudio",
                        compatVersion);
                else
                    PreferencesDirectory = new FilePath (libraryUrl.Path).Combine (
                        "Preferences",
                        $"XamarinStudio-{compatVersion}");

                if (PreferencesDirectory.DirectoryExists)
                    break;
            }

            IsInstalled = AppPath.DirectoryExists && !string.IsNullOrEmpty (Version);
        }