45 lines
1.5 KiB
C#
45 lines
1.5 KiB
C#
using DataLayer;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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namespace LibationAvalonia.ViewModels
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{
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#nullable enable
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internal static class QueryExtensions
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{
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public static IEnumerable<LibraryBookEntry> BookEntries(this IEnumerable<GridEntry> gridEntries)
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=> gridEntries.OfType<LibraryBookEntry>();
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public static IEnumerable<SeriesEntry> SeriesEntries(this IEnumerable<GridEntry> gridEntries)
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=> gridEntries.OfType<SeriesEntry>();
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public static T? FindByAsin<T>(this IEnumerable<T> gridEntries, string audibleProductID) where T : GridEntry
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=> gridEntries.FirstOrDefault(i => i.AudibleProductId == audibleProductID);
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public static IEnumerable<SeriesEntry> EmptySeries(this IEnumerable<GridEntry> gridEntries)
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=> gridEntries.SeriesEntries().Where(i => i.Children.Count == 0);
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public static SeriesEntry? FindSeriesParent(this IEnumerable<GridEntry> gridEntries, LibraryBook seriesEpisode)
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{
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if (seriesEpisode.Book.SeriesLink is null) return null;
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try
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{
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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 gridEntries.SeriesEntries().FirstOrDefault(
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lb =>
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seriesEpisode.Book.SeriesLink.Any(
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s => s.Series.AudibleSeriesId == lb.LibraryBook.Book.SeriesLink.Single().Series.AudibleSeriesId));
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}
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catch (Exception ex)
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{
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Serilog.Log.Error(ex, "Query error in {0}", nameof(FindSeriesParent));
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return null;
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}
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}
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}
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#nullable disable
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}
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