73 lines
2.4 KiB
C#
73 lines
2.4 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using Dinah.Core;
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using Microsoft.EntityFrameworkCore;
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namespace DataLayer
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{
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public class AudibleSeriesId
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{
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public string Id { get; }
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public AudibleSeriesId(string id)
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{
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ArgumentValidator.EnsureNotNullOrWhiteSpace(id, nameof(id));
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Id = id;
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}
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}
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public class Series
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{
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internal int SeriesId { get; private set; }
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public string AudibleSeriesId { get; private set; }
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/// <summary>optional</summary>
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public string Name { get; private set; }
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private HashSet<SeriesBook> _booksLink;
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public IEnumerable<SeriesBook> BooksLink
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=> _booksLink?
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.OrderBy(sb => sb.Index)
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.ToList();
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private Series() { }
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/// <summary>special id class b/c it's too easy to get string order mixed up</summary>
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public Series(AudibleSeriesId audibleSeriesId, string name = null)
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{
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ArgumentValidator.EnsureNotNull(audibleSeriesId, nameof(audibleSeriesId));
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var id = audibleSeriesId.Id;
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ArgumentValidator.EnsureNotNullOrWhiteSpace(id, nameof(id));
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AudibleSeriesId = id;
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_booksLink = new HashSet<SeriesBook>();
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UpdateName(name);
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}
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public void UpdateName(string name)
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{
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// don't overwrite with null or whitespace but not an error
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if (!string.IsNullOrWhiteSpace(name))
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Name = name;
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}
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public void AddBook(Book book, float? index = null, DbContext context = null)
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{
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ArgumentValidator.EnsureNotNull(book, nameof(book));
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// our add() is conditional upon what's already included in the collection.
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// therefore if not loaded, a trip is required. might as well just load it
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if (_booksLink == null)
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{
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ArgumentValidator.EnsureNotNull(context, nameof(context));
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if (!context.Entry(this).IsKeySet)
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throw new InvalidOperationException("Could not add series");
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context.Entry(this).Collection(s => s.BooksLink).Load();
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}
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if (_booksLink.SingleOrDefault(sb => sb.Book == book) == null)
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_booksLink.Add(new SeriesBook(this, book, index));
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}
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public override string ToString() => Name;
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}
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}
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