SparkFinder.cs

SparkFinder.cs

    public class SparkFinder
    {
        private readonly SparkItems _items;
        private readonly string[] _sharedFolderNames;

        public SparkFinder(SparkItems items, string[] sharedFolderNames)
        {
            _items = items;
            _sharedFolderNames = sharedFolderNames;
        }

        public SparkItem FindSpark(string sparkName, SparkItem item)
        {
            var spark = findSpark(sparkName, item.FilePath, item.RootPath);

            // Meh.
            if (spark == null && item.Origin != Constants.HostOrigin)
            {
                // **
                spark = findSpark(sparkName, string.Empty, "~/".ToPhysicalPath());
            }

            return spark;
        }

        private SparkItem findSpark(string sparkName, string startPath, string stopPath)
        {
            var reachables = reachableLocations(startPath, stopPath);
            return _items
                .Where(x => x.Name() == sparkName)
                .Where(x => reachables.Contains(x.DirectoryPath()))
                .FirstOrDefault();
        }

        private IEnumerable<string> reachableLocations(string path, string root)
        {
            do
            {
                path = Path.GetDirectoryName(path);
                if (path == null) break;
                // TODO: Consider yield return path if ancestor dirs should be included;
                foreach (var sharedFolder in _sharedFolderNames)
                {
                    yield return Path.Combine(path, sharedFolder);                    
                }

            } while (path.IsNotEmpty() && path.PathRelativeTo(root).IsNotEmpty());
        }
    }