fix file system watcher

SDMetaUI/Services/FileSystemObserver.cs

@@ -1,5 +1,4 @@
 using SDMeta;
-using System.IO.Abstractions;
 
 namespace SDMetaUI.Services
 {
@@ -17,28 +16,28 @@ public FileSystemObserver(IImageDir configuration)
 		private readonly IList<string> added = new List<string>();
 		private readonly IList<string> removed = new List<string>();
 		private readonly IList<string> removedInAdvanced = new List<string>();
-		private IEnumerable<IFileSystemWatcher> watchers;
+		private IEnumerable<FileSystemWatcher> watchers;
 
 		private void Start()
 		{
 			if (watchers == null)
 			{
-				watchers = new List<IFileSystemWatcher>();
+				watchers = configuration.GetPath().Select(p => GetWatcher(p)).ToList();
+			}
+		}
 
-				var directoryList = configuration.GetPath();
-				foreach (var directory in directoryList)
-				{
-					var watcher = new FileSystemWatcher(directory);
+		private FileSystemWatcher GetWatcher(string directory)
+		{
+			var watcher = new FileSystemWatcher(directory);
 
-					watcher.Created += OnCreated;
-					watcher.Deleted += OnDeleted;
-					watcher.Renamed += OnCreated;
+			watcher.Created += OnCreated;
+			watcher.Deleted += OnDeleted;
+			watcher.Renamed += OnCreated;
 
-					// watcher.Filter = "*.png";
-					watcher.IncludeSubdirectories = true;
-					watcher.EnableRaisingEvents = true;
-				}
-			}
+			// watcher.Filter = "*.png";
+			watcher.IncludeSubdirectories = true;
+			watcher.EnableRaisingEvents = true;
+			return watcher;
 		}
 
 		public void RegisterRemoval(string path)