64 lines
3.0 KiB
C#
64 lines
3.0 KiB
C#
using System.Collections.Generic;
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using System.Linq;
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using Microsoft.EntityFrameworkCore;
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namespace DataLayer
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{
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// only library importing should use tracking. All else should be NoTracking.
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// only library importing should directly query Book. All else should use LibraryBook
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public static class LibraryBookQueries
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{
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//// tracking is a bad idea for main grid. it prevents anything else from updating entities unless getting them from the grid
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//public static List<LibraryBook> GetLibrary_Flat_WithTracking(this LibationContext context)
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// => context
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// .Library
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// .GetLibrary()
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// .ToList();
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public static List<LibraryBook> GetLibrary_Flat_NoTracking(this LibationContext context, bool includeParents = false)
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=> context
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.LibraryBooks
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.AsNoTrackingWithIdentityResolution()
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.GetLibrary()
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.Where(lb => lb.Book.ContentType != ContentType.Parent || includeParents)
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.ToList();
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public static LibraryBook GetLibraryBook_Flat_NoTracking(this LibationContext context, string productId)
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=> context
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.LibraryBooks
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.AsNoTrackingWithIdentityResolution()
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.GetLibraryBook(productId);
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public static LibraryBook GetLibraryBook(this IQueryable<LibraryBook> library, string productId)
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=> library
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.GetLibrary()
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.SingleOrDefault(lb => lb.Book.AudibleProductId == productId);
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/// <summary>This is still IQueryable. YOU MUST CALL ToList() YOURSELF</summary>
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public static IQueryable<LibraryBook> GetLibrary(this IQueryable<LibraryBook> library)
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=> library
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// owned items are always loaded. eg: book.UserDefinedItem, book.Supplements
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.Include(le => le.Book).ThenInclude(b => b.SeriesLink).ThenInclude(sb => sb.Series)
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.Include(le => le.Book).ThenInclude(b => b.ContributorsLink).ThenInclude(c => c.Contributor)
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.Include(le => le.Book).ThenInclude(b => b.Category).ThenInclude(c => c.ParentCategory);
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#nullable enable
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public static LibraryBook? FindSeriesParent(this IEnumerable<LibraryBook> libraryBooks, LibraryBook seriesEpisode)
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{
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if (seriesEpisode.Book.SeriesLink is null) return null;
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//Parent books will always have exactly 1 SeriesBook due to how
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//they are imported in ApiExtended.getChildEpisodesAsync()
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return libraryBooks.FirstOrDefault(
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lb =>
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lb.Book.IsEpisodeParent() &&
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seriesEpisode.Book.SeriesLink.Any(
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s => s.Series.AudibleSeriesId == lb.Book.SeriesLink.Single().Series.AudibleSeriesId));
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}
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#nullable disable
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public static IEnumerable<LibraryBook> FindChildren(this IEnumerable<LibraryBook> bookList, LibraryBook parent)
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=> bookList.Where(lb => lb.Book.SeriesLink?.Any(s => s.Series.AudibleSeriesId == parent.Book.AudibleProductId) == true).ToList();
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}
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}
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