Address #625 comments and refactor

Source/ApplicationServices/BulkSetDownloadStatus.cs

@@ -10,7 +10,7 @@ namespace ApplicationServices
 {
     public class BulkSetDownloadStatus
     {
-        private List<(string message, LiberatedStatus newStatus, IEnumerable<Book> Books)> actionSets { get; } = new();
+        private List<(string message, LiberatedStatus newStatus, IEnumerable<LibraryBook> LibraryBooks)> actionSets { get; } = new();
 
         public int Count => actionSets.Count;
 
@@ -33,7 +33,7 @@ namespace ApplicationServices
             var bookExistsList = _libraryBooks
                 .Select(libraryBook => new
                 {
-                    libraryBook.Book,
+					LibraryBook = libraryBook,
                     FileExists = AudibleFileStorage.Audio.GetPath(libraryBook.Book.AudibleProductId) is not null
                 })
                 .ToList();
@@ -41,8 +41,8 @@ namespace ApplicationServices
             if (_setDownloaded)
             {
                 var books2change = bookExistsList
-                    .Where(a => a.FileExists && a.Book.UserDefinedItem.BookStatus != LiberatedStatus.Liberated)
+                    .Where(a => a.FileExists && a.LibraryBook.Book.UserDefinedItem.BookStatus != LiberatedStatus.Liberated)
-                    .Select(a => a.Book)
+                    .Select(a => a.LibraryBook)
                     .ToList();
 
                 if (books2change.Any())
@@ -55,8 +55,8 @@ namespace ApplicationServices
             if (_setNotDownloaded)
             {
                 var books2change = bookExistsList
-                    .Where(a => !a.FileExists && a.Book.UserDefinedItem.BookStatus != LiberatedStatus.NotLiberated)
+                    .Where(a => !a.FileExists && a.LibraryBook.Book.UserDefinedItem.BookStatus != LiberatedStatus.NotLiberated)
-                    .Select(a => a.Book)
+                    .Select(a => a.LibraryBook)
                     .ToList();
 
                 if (books2change.Any())
@@ -72,7 +72,7 @@ namespace ApplicationServices
         public void Execute()
         {
             foreach (var a in actionSets)
-                a.Books.UpdateBookStatus(a.newStatus);
+                a.LibraryBooks.UpdateBookStatus(a.newStatus);
         }
     }
 }

Source/ApplicationServices/LibraryCommands.cs

@@ -446,25 +446,25 @@ namespace ApplicationServices
         /// <summary>
         /// Occurs when the size of the library does not change but book(s) details do. Especially when <see cref="UserDefinedItem.Tags"/>, <see cref="UserDefinedItem.BookStatus"/>, or <see cref="UserDefinedItem.PdfStatus"/> changed values are successfully persisted.
         /// </summary>
-        public static event EventHandler<IEnumerable<Book>> BookUserDefinedItemCommitted;
+        public static event EventHandler<IEnumerable<LibraryBook>> BookUserDefinedItemCommitted;
 
         #region Update book details
         public static int UpdateUserDefinedItem(
-            this Book book,
+            this LibraryBook lb,
             string tags = null,
             LiberatedStatus? bookStatus = null,
             LiberatedStatus? pdfStatus = null,
             Rating rating = null)
-            => new[] { book }.UpdateUserDefinedItem(tags, bookStatus, pdfStatus, rating);
+            => new[] { lb }.UpdateUserDefinedItem(tags, bookStatus, pdfStatus, rating);
 
         public static int UpdateUserDefinedItem(
-            this IEnumerable<Book> books,
+            this IEnumerable<LibraryBook> lb,
             string tags = null,
             LiberatedStatus? bookStatus = null,
             LiberatedStatus? pdfStatus = null,
             Rating rating = null)
             => updateUserDefinedItem(
-                books,
+                lb,
                 udi => {
                     // blank tags are expected. null tags are not
                     if (tags is not null)
@@ -480,66 +480,52 @@ namespace ApplicationServices
                         udi.UpdateRating(rating.OverallRating, rating.PerformanceRating, rating.StoryRating);
 				});
 
-        public static int UpdateBookStatus(this Book book, LiberatedStatus bookStatus, Version libationVersion)
+        public static int UpdateBookStatus(this LibraryBook lb, LiberatedStatus bookStatus, Version libationVersion)
-            => book.UpdateUserDefinedItem(udi => { udi.BookStatus = bookStatus; udi.SetLastDownloaded(libationVersion); });
+            => lb.UpdateUserDefinedItem(udi => { udi.BookStatus = bookStatus; udi.SetLastDownloaded(libationVersion); });
-        public static int UpdateBookStatus(this Book book, LiberatedStatus bookStatus)
+
-            => book.UpdateUserDefinedItem(udi => udi.BookStatus = bookStatus);
-        public static int UpdateBookStatus(this IEnumerable<Book> books, LiberatedStatus bookStatus)
-            => books.UpdateUserDefinedItem(udi => udi.BookStatus = bookStatus);
         public static int UpdateBookStatus(this LibraryBook libraryBook, LiberatedStatus bookStatus)
             => libraryBook.UpdateUserDefinedItem(udi => udi.BookStatus = bookStatus);
         public static int UpdateBookStatus(this IEnumerable<LibraryBook> libraryBooks, LiberatedStatus bookStatus)
             => libraryBooks.UpdateUserDefinedItem(udi => udi.BookStatus = bookStatus);
 
-        public static int UpdatePdfStatus(this Book book, LiberatedStatus pdfStatus)
-            => book.UpdateUserDefinedItem(udi => udi.SetPdfStatus(pdfStatus));
-        public static int UpdatePdfStatus(this IEnumerable<Book> books, LiberatedStatus pdfStatus)
-            => books.UpdateUserDefinedItem(udi => udi.SetPdfStatus(pdfStatus));
         public static int UpdatePdfStatus(this LibraryBook libraryBook, LiberatedStatus pdfStatus)
             => libraryBook.UpdateUserDefinedItem(udi => udi.SetPdfStatus(pdfStatus));
         public static int UpdatePdfStatus(this IEnumerable<LibraryBook> libraryBooks, LiberatedStatus pdfStatus)
             => libraryBooks.UpdateUserDefinedItem(udi => udi.SetPdfStatus(pdfStatus));
 
-        public static int UpdateTags(this Book book, string tags)
-            => book.UpdateUserDefinedItem(udi => udi.Tags = tags);
-        public static int UpdateTags(this IEnumerable<Book> books, string tags)
-            => books.UpdateUserDefinedItem(udi => udi.Tags = tags);
         public static int UpdateTags(this LibraryBook libraryBook, string tags)
             => libraryBook.UpdateUserDefinedItem(udi => udi.Tags = tags);
         public static int UpdateTags(this IEnumerable<LibraryBook> libraryBooks, string tags)
             => libraryBooks.UpdateUserDefinedItem(udi => udi.Tags = tags);
 
         public static int UpdateUserDefinedItem(this LibraryBook libraryBook, Action<UserDefinedItem> action)
-            => libraryBook.Book.updateUserDefinedItem(action);
+            => libraryBook.updateUserDefinedItem(action);
         public static int UpdateUserDefinedItem(this IEnumerable<LibraryBook> libraryBooks, Action<UserDefinedItem> action)
-            => libraryBooks.Select(lb => lb.Book).updateUserDefinedItem(action);
+            => libraryBooks.updateUserDefinedItem(action);
 
-        public static int UpdateUserDefinedItem(this Book book, Action<UserDefinedItem> action) => book.updateUserDefinedItem(action);
+        private static int updateUserDefinedItem(this LibraryBook libraryBook, Action<UserDefinedItem> action) => new[] { libraryBook }.updateUserDefinedItem(action);
-        public static int UpdateUserDefinedItem(this IEnumerable<Book> books, Action<UserDefinedItem> action) => books.updateUserDefinedItem(action);
+        private static int updateUserDefinedItem(this IEnumerable<LibraryBook> libraryBooks, Action<UserDefinedItem> action)
-
-        private static int updateUserDefinedItem(this Book book, Action<UserDefinedItem> action) => new[] { book }.updateUserDefinedItem(action);
-        private static int updateUserDefinedItem(this IEnumerable<Book> books, Action<UserDefinedItem> action)
         {
             try
             {
-                if (books is null || !books.Any())
+                if (libraryBooks is null || !libraryBooks.Any())
                     return 0;
 
-                foreach (var book in books)
+                foreach (var book in libraryBooks)
-                    action?.Invoke(book.UserDefinedItem);
+                    action?.Invoke(book.Book.UserDefinedItem);
 
                 using var context = DbContexts.GetContext();
 
                 // Attach() NoTracking entities before SaveChanges()
-                foreach (var book in books)
+                foreach (var book in libraryBooks)
                 {
-                    context.Attach(book.UserDefinedItem).State = Microsoft.EntityFrameworkCore.EntityState.Modified;
+                    context.Attach(book.Book.UserDefinedItem).State = Microsoft.EntityFrameworkCore.EntityState.Modified;
-                    context.Attach(book.UserDefinedItem.Rating).State = Microsoft.EntityFrameworkCore.EntityState.Modified;
+                    context.Attach(book.Book.UserDefinedItem.Rating).State = Microsoft.EntityFrameworkCore.EntityState.Modified;
                 }
 
                 var qtyChanges = context.SaveChanges();
                 if (qtyChanges > 0)
-                    BookUserDefinedItemCommitted?.Invoke(null, books);
+                    BookUserDefinedItemCommitted?.Invoke(null, libraryBooks);
 
                 return qtyChanges;
             }

Source/ApplicationServices/SearchEngineCommands.cs

@@ -34,7 +34,7 @@ namespace ApplicationServices
 		#region Update
 		private static bool isUpdating;
 
-		public static void UpdateBooks(IEnumerable<Book> books)
+		public static void UpdateBooks(IEnumerable<LibraryBook> books)
 		{
 			// Semi-arbitrary. At some point it's more worth it to do a full re-index than to do one offs.
 			// I did not benchmark before choosing the number here
@@ -49,10 +49,10 @@ namespace ApplicationServices
 
 		public static void FullReIndex() => performSafeCommand(fullReIndex);
 
-		internal static void UpdateUserDefinedItems(Book book) => performSafeCommand(e =>
+		internal static void UpdateUserDefinedItems(LibraryBook book) => performSafeCommand(e =>
 			{
 				e.UpdateLiberatedStatus(book);
-				e.UpdateTags(book.AudibleProductId, book.UserDefinedItem.Tags);
+				e.UpdateTags(book.Book.AudibleProductId, book.Book.UserDefinedItem.Tags);
 				e.UpdateUserRatings(book);
 			}
 		);

Source/FileLiberator/DownloadDecryptBook.cs

@@ -80,7 +80,7 @@ namespace FileLiberator
                 {
 					Task.Run(() => downloadCoverArt(libraryBook)),
 					Task.Run(() => moveFilesToBooksDir(libraryBook, entries)),
-					Task.Run(() => libraryBook.Book.UpdateBookStatus(LiberatedStatus.Liberated, Configuration.LibationVersion)),
+					Task.Run(() => libraryBook.UpdateBookStatus(LiberatedStatus.Liberated, Configuration.LibationVersion)),
 					Task.Run(() => WindowsDirectory.SetCoverAsFolderIcon(libraryBook.Book.PictureId, finalStorageDir))
 				};
 

Source/FileLiberator/DownloadPdf.cs

@@ -30,7 +30,7 @@ namespace FileLiberator
 				var actualDownloadedFilePath = await downloadPdfAsync(libraryBook, proposedDownloadFilePath);
 				var result = verifyDownload(actualDownloadedFilePath);
 
-				libraryBook.Book.UpdatePdfStatus(result.IsSuccess ? LiberatedStatus.Liberated : LiberatedStatus.NotLiberated);
+				libraryBook.UpdatePdfStatus(result.IsSuccess ? LiberatedStatus.Liberated : LiberatedStatus.NotLiberated);
 
                 return result;
             }

Source/LibationAvalonia/Dialogs/BookDetailsDialog.axaml.cs

@@ -48,7 +48,7 @@ namespace LibationAvalonia.Dialogs
 
 		protected override void SaveAndClose()
 		{
-			LibraryBook.Book.UpdateUserDefinedItem(NewTags, bookStatus: BookLiberatedStatus, pdfStatus: PdfLiberatedStatus);
+			LibraryBook.UpdateUserDefinedItem(NewTags, bookStatus: BookLiberatedStatus, pdfStatus: PdfLiberatedStatus);
 			base.SaveAndClose();
 		}
 

Source/LibationAvalonia/ViewModels/ProcessBookViewModel.cs

@@ -390,7 +390,7 @@ $@"  Title: {libraryBook.Book.Title}
 
 			if (dialogResult == SkipResult)
 			{
-				libraryBook.Book.UpdateBookStatus(LiberatedStatus.Error);
+				libraryBook.UpdateBookStatus(LiberatedStatus.Error);
 
 				Logger.Info($"Error. Skip: [{libraryBook.Book.AudibleProductId}] {libraryBook.Book.Title}");
 

Source/LibationAvalonia/ViewModels/ProcessQueueViewModel.cs

@@ -223,7 +223,7 @@ namespace LibationAvalonia.ViewModels
 					else if (result == ProcessBookResult.FailedAbort)
 						Queue.ClearQueue();
 					else if (result == ProcessBookResult.FailedSkip)
-						nextBook.LibraryBook.Book.UpdateBookStatus(LiberatedStatus.Error);
+						nextBook.LibraryBook.UpdateBookStatus(LiberatedStatus.Error);
 					else if (result == ProcessBookResult.LicenseDeniedPossibleOutage && !shownServiceOutageMessage)
 					{
 						await MessageBox.Show(@$"

Source/LibationAvalonia/Views/ProductsDisplay.axaml.cs

@@ -112,7 +112,7 @@ namespace LibationAvalonia.Views
 				if (entry.Liberate.IsSeries)
 					setDownloadMenuItem.Click += (_, __) => ((ISeriesEntry)entry).Children.Select(c => c.LibraryBook).UpdateBookStatus(LiberatedStatus.Liberated);
 				else
-					setDownloadMenuItem.Click += (_, __) => entry.Book.UpdateBookStatus(LiberatedStatus.Liberated);
+					setDownloadMenuItem.Click += (_, __) => entry.LibraryBook.UpdateBookStatus(LiberatedStatus.Liberated);
 
 				#endregion
 				#region Set Download status to Not Downloaded
@@ -128,7 +128,7 @@ namespace LibationAvalonia.Views
 				if (entry.Liberate.IsSeries)
 					setNotDownloadMenuItem.Click += (_, __) => ((ISeriesEntry)entry).Children.Select(c => c.LibraryBook).UpdateBookStatus(LiberatedStatus.NotLiberated);
 				else
-					setNotDownloadMenuItem.Click += (_, __) => entry.Book.UpdateBookStatus(LiberatedStatus.NotLiberated);
+					setNotDownloadMenuItem.Click += (_, __) => entry.LibraryBook.UpdateBookStatus(LiberatedStatus.NotLiberated);
 
 				#endregion
 				#region Remove from library

Source/LibationSearchEngine/BookRule.cs

@@ -1,21 +0,0 @@
-using DataLayer;
-using System;
-using System.Collections.ObjectModel;
-
-namespace LibationSearchEngine;
-
-public class BookRule : IIndexRule
-{
-	public FieldType FieldType { get; }
-	public Func<Book, string> ValueGetter { get; }
-	public ReadOnlyCollection<string> FieldNames { get; }
-
-	public BookRule(FieldType fieldType, Func<Book, string> valueGetter, params string[] fieldNames)
-	{
-		ValueGetter = valueGetter;
-		FieldType = fieldType;
-		FieldNames = new ReadOnlyCollection<string>(fieldNames);
-	}
-
-	public string GetValue(LibraryBook libraryBook) => ValueGetter(libraryBook.Book);
-}

Source/LibationSearchEngine/IIndexRule.cs

@@ -1,22 +0,0 @@
-using DataLayer;
-using System.Collections.ObjectModel;
-
-namespace LibationSearchEngine;
-
-public enum FieldType
-{
-	Bool,
-	String,
-	Number,
-	ID,
-	Raw
-}
-
-public interface IIndexRule
-{
-	/// <summary> This rule's value type. </summary>
-	FieldType FieldType { get; }
-	/// <summary> All aliases of this search index rule </summary>
-	ReadOnlyCollection<string> FieldNames { get; }
-	string GetValue(LibraryBook libraryBook);
-}

Source/LibationSearchEngine/IndexRule.cs

@@ -0,0 +1,42 @@
+using DataLayer;
+using Dinah.Core;
+using System;
+using System.Collections.ObjectModel;
+using System.Linq;
+
+namespace LibationSearchEngine;
+
+public enum FieldType
+{
+	Bool,
+	String,
+	Number,
+	ID,
+	Raw
+}
+
+public class IndexRule
+{
+	public FieldType FieldType { get; }
+	public Func<LibraryBook, string> GetValue { get; }
+	public ReadOnlyCollection<string> FieldNames { get; }
+
+	public IndexRule(FieldType fieldType, Func<LibraryBook, string> valueGetter, params string[] fieldNames)
+	{
+		ArgumentValidator.EnsureNotNull(valueGetter, nameof(valueGetter));
+		ArgumentValidator.EnsureNotNull(fieldNames, nameof(fieldNames));
+		ArgumentValidator.EnsureGreaterThan(fieldNames.Length, $"{nameof(fieldNames)}.{nameof(fieldNames.Length)}", 0);
+		var fieldNamesValidated
+			= fieldNames
+			.Select((n, i) => ArgumentValidator.EnsureNotNullOrWhiteSpace(n, $"{nameof(fieldNames)}[{i}]")
+			.Trim());
+
+		GetValue = valueGetter;
+		FieldType = fieldType;
+		FieldNames = new ReadOnlyCollection<string>(fieldNamesValidated.ToList());
+	}
+	public override string ToString()
+		=> FieldNames.Count == 1
+		? $"{FieldNames.First()}"
+		: $"{FieldNames.First()} ({string.Join(", ", FieldNames.Skip(1))})";	
+}

Source/LibationSearchEngine/IndexRuleCollection.cs

@@ -2,27 +2,26 @@
 using System;
 using System.Collections;
 using System.Collections.Generic;
+using System.Diagnostics;
 using System.Linq;
 
 namespace LibationSearchEngine;
 
-public class IndexRuleCollection : IEnumerable<IIndexRule>
+[DebuggerDisplay("Count = {rules.Count,nq}")]
+public class IndexRuleCollection : IEnumerable<IndexRule>
 {
-	private readonly List<IIndexRule> rules = new();
+	private readonly List<IndexRule> rules = new();
 	public IEnumerable<string> IdFieldNames => rules.Where(x => x.FieldType is FieldType.ID).SelectMany(r => r.FieldNames);
 	public IEnumerable<string> BoolFieldNames => rules.Where(x => x.FieldType is FieldType.Bool).SelectMany(r => r.FieldNames);
 	public IEnumerable<string> StringFieldNames => rules.Where(x => x.FieldType is FieldType.String).SelectMany(r => r.FieldNames);
 	public IEnumerable<string> NumberFieldNames => rules.Where(x => x.FieldType is FieldType.Number).SelectMany(r => r.FieldNames);
 
 	public void Add(FieldType fieldType, Func<LibraryBook, string> getter, params string[] fieldNames)
-		=> rules.Add(new LibraryBookRule(fieldType, getter, fieldNames));
+		=> rules.Add(new IndexRule(fieldType, getter, fieldNames));
-
-	public void Add(FieldType fieldType, Func<Book, string> getter, params string[] fieldNames)
-		=> rules.Add(new BookRule(fieldType, getter, fieldNames));
 	
-	public T GetRuleByFieldName<T>(string fieldName) where T : IIndexRule
+	public IndexRule GetRuleByFieldName(string fieldName)
-		=> (T)rules.SingleOrDefault(r => r.FieldNames.Any(n => n.Equals(fieldName, StringComparison.OrdinalIgnoreCase)));
+		=> rules.SingleOrDefault(r => r.FieldNames.Any(n => n.Equals(fieldName, StringComparison.OrdinalIgnoreCase)));
 
-	public IEnumerator<IIndexRule> GetEnumerator() => rules.GetEnumerator();
+	public IEnumerator<IndexRule> GetEnumerator() => rules.GetEnumerator();
 	IEnumerator IEnumerable.GetEnumerator() => GetEnumerator();
 }

Source/LibationSearchEngine/LibraryBookRule.cs

@@ -1,21 +0,0 @@
-using DataLayer;
-using System;
-using System.Collections.ObjectModel;
-
-namespace LibationSearchEngine;
-
-public class LibraryBookRule : IIndexRule
-{
-	public FieldType FieldType { get; }
-	public Func<LibraryBook, string> ValueGetter { get; }
-	public ReadOnlyCollection<string> FieldNames { get; }
-
-	public LibraryBookRule(FieldType fieldType, Func<LibraryBook, string> valueGetter, params string[] fieldNames)
-	{
-		ValueGetter = valueGetter;
-		FieldType = fieldType;
-		FieldNames = new ReadOnlyCollection<string>(fieldNames);
-	}
-
-	public string GetValue(LibraryBook libraryBook) => ValueGetter(libraryBook);
-}

Source/LibationSearchEngine/LuceneExtensions.cs

@@ -17,7 +17,7 @@ namespace LibationSearchEngine
 				document.Add(new Field(name.ToLowerInvariant(), value, Field.Store.YES, Field.Index.ANALYZED));
 		}        
 
-        internal static void RemoveRule(this Document document, IIndexRule rule)
+        internal static void RemoveRule(this Document document, IndexRule rule)
 		{
 			// fields are key value pairs. MULTIPLE FIELDS CAN POTENTIALLY HAVE THE SAME KEY.
 			// ie: must remove old before adding new else will create unwanted duplicates.
@@ -25,20 +25,9 @@ namespace LibationSearchEngine
 				document.RemoveFields(name.ToLowerInvariant());
 		}
 
-        internal static void AddIndexRule(this Document document, IIndexRule rule, LibraryBook libraryBook)
+        internal static void AddIndexRule(this Document document, IndexRule rule, LibraryBook libraryBook)
 		{
 			string value = rule.GetValue(libraryBook);
-
-			addIndexRule(document, rule, value);
-		}
-
-        internal static void AddIndexRule(this Document document, BookRule rule, Book libraryBook)
-		{
-			addIndexRule(document, rule, rule.ValueGetter(libraryBook));
-		}
-
-        private static void addIndexRule(Document document, IIndexRule rule, string value)
-		{
 			if (value is null) return;
 
 			foreach (var name in rule.FieldNames)

Source/LibationSearchEngine/SearchEngine.cs

@@ -33,34 +33,34 @@ namespace LibationSearchEngine
 		// use these common fields in the "all" default search field
 		public static IndexRuleCollection FieldIndexRules { get; } = new IndexRuleCollection
         {
-            { FieldType.ID, Book => Book.AudibleProductId.ToLowerInvariant(), nameof(Book.AudibleProductId), "ProductId", "Id", "ASIN" },
+            { FieldType.ID, lb => lb.Book.AudibleProductId.ToLowerInvariant(), nameof(Book.AudibleProductId), "ProductId", "Id", "ASIN" },
-            { FieldType.Raw, Book => Book.AudibleProductId, _ID_ },
+            { FieldType.Raw, lb => lb.Book.AudibleProductId, _ID_ },
-            { FieldType.String, Book => Book.Title, nameof(Book.Title), "ProductId", "Id", "ASIN" },
+            { FieldType.String, lb => lb.Book.Title, nameof(Book.Title), "ProductId", "Id", "ASIN" },
-            { FieldType.String, Book => Book.AuthorNames(), "AuthorNames", "Author", "Authors" },
+            { FieldType.String, lb => lb.Book.AuthorNames(), "AuthorNames", "Author", "Authors" },
-            { FieldType.String, Book => Book.NarratorNames(), "NarratorNames", "Narrator", "Narrators" },
+            { FieldType.String, lb => lb.Book.NarratorNames(), "NarratorNames", "Narrator", "Narrators" },
-            { FieldType.String, Book => Book.Publisher, nameof(Book.Publisher) },
+            { FieldType.String, lb => lb.Book.Publisher, nameof(Book.Publisher) },
-            { FieldType.String, Book => Book.SeriesNames(), "SeriesNames", "Narrator", "Series" },
+            { FieldType.String, lb => lb.Book.SeriesNames(), "SeriesNames", "Narrator", "Series" },
-            { FieldType.String, Book => string.Join(", ", Book.SeriesLink.Select(s => s.Series.AudibleSeriesId)), "SeriesId" },
+            { FieldType.String, lb => string.Join(", ", lb.Book.SeriesLink.Select(s => s.Series.AudibleSeriesId)), "SeriesId" },
-            { FieldType.String, Book => Book.CategoriesIds() is null ? null : string.Join(", ", Book.CategoriesIds()), nameof(Book.Category), "Categories", "CategoriesId", "CategoryId", "CategoriesNames" },
+            { FieldType.String, lb => lb.Book.CategoriesIds() is null ? null : string.Join(", ", lb.Book.CategoriesIds()), nameof(Book.Category), "Categories", "CategoriesId", "CategoryId", "CategoriesNames" },
-            { FieldType.String, Book => Book.UserDefinedItem.Tags, TAGS.FirstCharToUpper() },
+            { FieldType.String, lb => lb.Book.UserDefinedItem.Tags, TAGS.FirstCharToUpper() },
-            { FieldType.String, Book => Book.Locale, "Locale", "Region" },
+            { FieldType.String, lb => lb.Book.Locale, "Locale", "Region" },
             { FieldType.String, lb => lb.Account, "Account", "Email" },
-            { FieldType.Bool, Book => Book.HasPdf().ToString(), "HasDownloads", "HasDownload", "Downloads" , "Download", "HasPDFs", "HasPDF" , "PDFs", "PDF" },
+            { FieldType.Bool, lb => lb.Book.HasPdf().ToString(), "HasDownloads", "HasDownload", "Downloads" , "Download", "HasPDFs", "HasPDF" , "PDFs", "PDF" },
-            { FieldType.Bool, Book => (Book.UserDefinedItem.Rating.OverallRating > 0f).ToString(), "IsRated", "Rated" },
+            { FieldType.Bool, lb => (lb.Book.UserDefinedItem.Rating.OverallRating > 0f).ToString(), "IsRated", "Rated" },
-            { FieldType.Bool, Book => isAuthorNarrated(Book).ToString(), "IsAuthorNarrated", "AuthorNarrated" },
+            { FieldType.Bool, lb => isAuthorNarrated(lb.Book).ToString(), "IsAuthorNarrated", "AuthorNarrated" },
-            { FieldType.Bool, Book => Book.IsAbridged.ToString(), nameof(Book.IsAbridged), "Abridged" },
+            { FieldType.Bool, lb => lb.Book.IsAbridged.ToString(), nameof(Book.IsAbridged), "Abridged" },
-            { FieldType.Bool, Book => (Book.UserDefinedItem.BookStatus == LiberatedStatus.Liberated).ToString(), "IsLiberated", "Liberated" },
+            { FieldType.Bool, lb => (lb.Book.UserDefinedItem.BookStatus == LiberatedStatus.Liberated).ToString(), "IsLiberated", "Liberated" },
-            { FieldType.Bool, Book => (Book.UserDefinedItem.BookStatus == LiberatedStatus.Error).ToString(), "LiberatedError" },
+            { FieldType.Bool, lb => (lb.Book.UserDefinedItem.BookStatus == LiberatedStatus.Error).ToString(), "LiberatedError" },
-            { FieldType.Bool, Book => Book.IsEpisodeChild().ToString(), "Podcast", "Podcasts", "IsPodcast", "Episode", "Episodes", "IsEpisode" },
+            { FieldType.Bool, lb => lb.Book.IsEpisodeChild().ToString(), "Podcast", "Podcasts", "IsPodcast", "Episode", "Episodes", "IsEpisode" },
             { FieldType.Bool, lb => lb.AbsentFromLastScan.ToString(), "AbsentFromLastScan", "Absent" },
             // all numbers are padded to 8 char.s
             // This will allow a single method to auto-pad numbers. The method will match these as well as date: yyyymmdd
-            { FieldType.Number, Book => Book.LengthInMinutes.ToLuceneString(), nameof(Book.LengthInMinutes), "Length", "Minutes" },
+            { FieldType.Number, lb => lb.Book.LengthInMinutes.ToLuceneString(), nameof(Book.LengthInMinutes), "Length", "Minutes" },
-            { FieldType.Number, Book => (Book.LengthInMinutes / 60).ToLuceneString(), "Hours" },
+            { FieldType.Number, lb => (lb.Book.LengthInMinutes / 60).ToLuceneString(), "Hours" },
-            { FieldType.Number, Book => Book.Rating.OverallRating.ToLuceneString(), "ProductRating", "Rating" },
+            { FieldType.Number, lb => lb.Book.Rating.OverallRating.ToLuceneString(), "ProductRating", "Rating" },
-            { FieldType.Number, Book => Book.UserDefinedItem.Rating.OverallRating.ToLuceneString(), "UserRating", "MyRating" },
+            { FieldType.Number, lb => lb.Book.UserDefinedItem.Rating.OverallRating.ToLuceneString(), "UserRating", "MyRating" },
-            { FieldType.Number, Book => Book.DatePublished?.ToLuceneString() ?? "", nameof(Book.DatePublished) },
+            { FieldType.Number, lb => lb.Book.DatePublished?.ToLuceneString() ?? "", nameof(Book.DatePublished) },
-            { FieldType.Number, Book => Book.UserDefinedItem.LastDownloaded.ToLuceneString(), nameof(UserDefinedItem.LastDownloaded), "LastDownload" },
+            { FieldType.Number, lb => lb.Book.UserDefinedItem.LastDownloaded.ToLuceneString(), nameof(UserDefinedItem.LastDownloaded), "LastDownload" },
             { FieldType.Number, lb => lb.DateAdded.ToLuceneString(), nameof(LibraryBook.DateAdded) }
 		};
         #endregion
@@ -132,14 +132,14 @@ namespace LibationSearchEngine
 				});
 
 		// update single document entry
-        public void UpdateLiberatedStatus(Book book)
+        public void UpdateLiberatedStatus(LibraryBook book)
             => updateDocument(
-                book.AudibleProductId,
+                book.Book.AudibleProductId,
                 d =>
                 {
-                    var lib = FieldIndexRules.GetRuleByFieldName<BookRule>("IsLiberated");
+                    var lib = FieldIndexRules.GetRuleByFieldName("IsLiberated");
-                    var libError = FieldIndexRules.GetRuleByFieldName<BookRule>("LiberatedError");
+                    var libError = FieldIndexRules.GetRuleByFieldName("LiberatedError");
-                    var lastDl = FieldIndexRules.GetRuleByFieldName<BookRule>(nameof(UserDefinedItem.LastDownloaded));
+                    var lastDl = FieldIndexRules.GetRuleByFieldName(nameof(UserDefinedItem.LastDownloaded));
 
                     d.RemoveRule(lib);
                     d.RemoveRule(libError);
@@ -150,12 +150,12 @@ namespace LibationSearchEngine
                     d.AddIndexRule(lastDl, book);
 				});
 
-        public void UpdateUserRatings(Book book)
+        public void UpdateUserRatings(LibraryBook book)
             =>updateDocument(
-                book.AudibleProductId,
+                book.Book.AudibleProductId,
                 d =>
 				{
-					var rating = FieldIndexRules.GetRuleByFieldName<BookRule>("UserRating");
+					var rating = FieldIndexRules.GetRuleByFieldName("UserRating");
 
 					d.RemoveRule(rating);
 					d.AddIndexRule(rating, book);

Source/LibationUiBase/GridView/GridEntry[TStatus].cs

@@ -88,7 +88,7 @@ namespace LibationUiBase.GridView
 			var api = await LibraryBook.GetApiAsync();
 
 			if (await api.ReviewAsync(Book.AudibleProductId, (int)rating.OverallRating, (int)rating.PerformanceRating, (int)rating.StoryRating))
-				LibraryBook.Book.UpdateUserDefinedItem(Book.UserDefinedItem.Tags, Book.UserDefinedItem.BookStatus, Book.UserDefinedItem.PdfStatus, rating);
+				LibraryBook.UpdateUserDefinedItem(Book.UserDefinedItem.Tags, Book.UserDefinedItem.BookStatus, Book.UserDefinedItem.PdfStatus, rating);
 		}
 
 		#endregion

Source/LibationWinForms/GridView/ProductsDisplay.cs

@@ -93,7 +93,7 @@ namespace LibationWinForms.GridView
 		{
 			var bookDetailsForm = new BookDetailsDialog(liveGridEntry.LibraryBook);
 			if (bookDetailsForm.ShowDialog() == DialogResult.OK)
-				liveGridEntry.Book.UpdateUserDefinedItem(bookDetailsForm.NewTags, bookDetailsForm.BookLiberatedStatus, bookDetailsForm.PdfLiberatedStatus);
+				liveGridEntry.LibraryBook.UpdateUserDefinedItem(bookDetailsForm.NewTags, bookDetailsForm.BookLiberatedStatus, bookDetailsForm.PdfLiberatedStatus);
 		}
 
 		#endregion
@@ -131,7 +131,7 @@ namespace LibationWinForms.GridView
 			if (entry.Liberate.IsSeries)
 				setDownloadMenuItem.Click += (_, _) => ((ISeriesEntry)entry).Children.Select(c => c.LibraryBook).UpdateBookStatus(LiberatedStatus.Liberated);
 			else
-				setDownloadMenuItem.Click += (_, _) => entry.Book.UpdateBookStatus(LiberatedStatus.Liberated);
+				setDownloadMenuItem.Click += (_, _) => entry.LibraryBook.UpdateBookStatus(LiberatedStatus.Liberated);
 
 			#endregion
 			#region Set Download status to Not Downloaded
@@ -147,7 +147,7 @@ namespace LibationWinForms.GridView
 			if (entry.Liberate.IsSeries)
 				setNotDownloadMenuItem.Click += (_, _) => ((ISeriesEntry)entry).Children.Select(c => c.LibraryBook).UpdateBookStatus(LiberatedStatus.NotLiberated);
 			else
-				setNotDownloadMenuItem.Click += (_, _) => entry.Book.UpdateBookStatus(LiberatedStatus.NotLiberated);
+				setNotDownloadMenuItem.Click += (_, _) => entry.LibraryBook.UpdateBookStatus(LiberatedStatus.NotLiberated);
 
 			#endregion
 			#region Remove from library

Source/LibationWinForms/ProcessQueue/ProcessBook.cs

@@ -377,7 +377,7 @@ $@"  Title: {libraryBook.Book.Title}
 
 			if (dialogResult == SkipResult)
 			{
-				libraryBook.Book.UpdateBookStatus(LiberatedStatus.Error);
+				libraryBook.UpdateBookStatus(LiberatedStatus.Error);
 
 				Logger.Info($"Error. Skip: [{libraryBook.Book.AudibleProductId}] {libraryBook.Book.Title}");
 

Source/LibationWinForms/ProcessQueue/ProcessQueueControl.cs

@@ -184,7 +184,7 @@ namespace LibationWinForms.ProcessQueue
 					else if (result == ProcessBookResult.FailedAbort)
 						Queue.ClearQueue();
 					else if (result == ProcessBookResult.FailedSkip)
-						nextBook.LibraryBook.Book.UpdateBookStatus(DataLayer.LiberatedStatus.Error);
+						nextBook.LibraryBook.UpdateBookStatus(DataLayer.LiberatedStatus.Error);
 					else if (result == ProcessBookResult.LicenseDeniedPossibleOutage && !shownServiceOutageMessage)
 					{
 						MessageBox.Show(@$"