internal string FindBestVersionMatch()

in src/WebJobs.Script/ExtensionBundle/ExtensionBundleManager.cs [253:294]
34 lines of code
10 McCabe index (conditional complexity)

        internal string FindBestVersionMatch(VersionRange versionRange, IEnumerable<string> versions, string bundleId, FunctionsHostingConfigOptions configOption)
        {
            var bundleVersions = versions.Select(p =>
            {
                var dirName = Path.GetFileName(p);
                NuGetVersion.TryParse(dirName, out NuGetVersion version);
                if (version != null)
                {
                    version = versionRange.Satisfies(version) ? version : null;
                }
                return version;
            }).Where(v => v != null).OrderByDescending(version => version.Version).ToList();

            var matchingVersion = ResolvePlatformReleaseChannelVersion(bundleVersions);

            if (bundleId != ScriptConstants.DefaultExtensionBundleId)
            {
                return matchingVersion?.ToString();
            }

            // Check to see if there is a max bundle version set via hosting configuration, if yes then use that instead of the one
            // available on VM or local machine. Only use MaximumBundleV3Version or MaximumBundleV4Version if the version configured
            // by the customer resolved to version higher than the version set via hosting config.
            if (!string.IsNullOrEmpty(configOption.MaximumBundleV3Version)
                && matchingVersion?.Major == ScriptConstants.ExtensionBundleV3MajorVersion)
            {
                var maximumBundleV3Version = NuGetVersion.Parse(configOption.MaximumBundleV3Version);
                matchingVersion = matchingVersion > maximumBundleV3Version ? maximumBundleV3Version : matchingVersion;
                return matchingVersion?.ToString();
            }

            if (!string.IsNullOrEmpty(configOption.MaximumBundleV4Version)
                && matchingVersion?.Major == ScriptConstants.ExtensionBundleV4MajorVersion)
            {
                var maximumBundleV4Version = NuGetVersion.Parse(configOption.MaximumBundleV4Version);
                matchingVersion = matchingVersion > maximumBundleV4Version
                                ? maximumBundleV4Version
                                : matchingVersion;
            }

            return matchingVersion?.ToString();
        }