Re-index if search engine files get deleted

ApplicationServices/UNTESTED/LibraryCommands.cs

@@ -0,0 +1,40 @@
+using System;
+using System.Threading.Tasks;
+using AudibleApi;
+using DataLayer;
+using DtoImporterService;
+using InternalUtilities;
+
+namespace ApplicationServices
+{
+	public static class LibraryCommands
+	{
+		public static async Task<(int totalCount, int newCount)> IndexLibraryAsync(ILoginCallback callback)
+		{
+			var audibleApiActions = new AudibleApiActions();
+			var items = await audibleApiActions.GetAllLibraryItemsAsync(callback);
+			var totalCount = items.Count;
+
+			var libImporter = new LibraryImporter();
+			var newCount = await Task.Run(() => libImporter.Import(items));
+
+			await Task.Run(() => SearchEngineCommands.FullReIndex());
+
+			return (totalCount, newCount);
+		}
+
+		public static int IndexChangedTags(Book book)
+		{
+			// update disconnected entity
+			using var context = LibationContext.Create();
+			context.Update(book);
+			var qtyChanges = context.SaveChanges();
+
+			// this part is tags-specific
+			if (qtyChanges > 0)
+				SearchEngineCommands.UpdateBookTags(book);
+
+			return qtyChanges;
+		}
+	}
+}