301 lines
9.0 KiB
C#
301 lines
9.0 KiB
C#
using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Drawing;
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using System.Linq;
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using ApplicationServices;
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using DataLayer;
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using Dinah.Core.DataBinding;
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using Dinah.Core;
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using Dinah.Core.Drawing;
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namespace LibationWinForms
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{
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/// <summary>
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/// The View Model for a LibraryBook
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/// </summary>
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internal class GridEntry : AsyncNotifyPropertyChanged, IMemberComparable
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{
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#region implementation properties
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// hide from public fields from Data Source GUI with [Browsable(false)]
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[Browsable(false)]
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public string AudibleProductId => Book.AudibleProductId;
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[Browsable(false)]
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public LibraryBook LibraryBook { get; }
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#endregion
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private Book Book => LibraryBook.Book;
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private Image _cover;
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private Action Refilter { get; }
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public GridEntry(LibraryBook libraryBook, Action refilterOnChanged = null)
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{
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LibraryBook = libraryBook;
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Refilter = refilterOnChanged;
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_memberValues = CreateMemberValueDictionary();
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//Get cover art. If it's default, subscribe to PictureCached
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{
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(bool isDefault, byte[] picture) = FileManager.PictureStorage.GetPicture(new FileManager.PictureDefinition(Book.PictureId, FileManager.PictureSize._80x80));
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if (isDefault)
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FileManager.PictureStorage.PictureCached += PictureStorage_PictureCached;
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//Mutable property. Set the field so PropertyChanged isn't fired.
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_cover = ImageReader.ToImage(picture);
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}
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//Immutable properties
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{
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Title = Book.Title;
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Series = Book.SeriesNames;
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Length = Book.LengthInMinutes == 0 ? "" : $"{Book.LengthInMinutes / 60} hr {Book.LengthInMinutes % 60} min";
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MyRating = Book.UserDefinedItem.Rating?.ToStarString()?.DefaultIfNullOrWhiteSpace("");
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PurchaseDate = libraryBook.DateAdded.ToString("d");
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ProductRating = Book.Rating?.ToStarString()?.DefaultIfNullOrWhiteSpace("");
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Authors = Book.AuthorNames;
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Narrators = Book.NarratorNames;
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Category = string.Join(" > ", Book.CategoriesNames);
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Misc = GetMiscDisplay(libraryBook);
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Description = GetDescriptionDisplay(Book);
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}
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UserDefinedItem.ItemChanged += UserDefinedItem_ItemChanged;
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}
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private void PictureStorage_PictureCached(object sender, FileManager.PictureCachedEventArgs e)
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{
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if (e.Definition.PictureId == Book.PictureId)
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{
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Cover = ImageReader.ToImage(e.Picture);
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FileManager.PictureStorage.PictureCached -= PictureStorage_PictureCached;
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}
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}
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#region detect changes to the model, update the view, and save to database.
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/// <summary>
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/// This event handler receives notifications from the model that it has changed.
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/// Save to the database and notify the view that it's changed.
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/// </summary>
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private void UserDefinedItem_ItemChanged(object sender, string itemName)
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{
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var udi = sender as UserDefinedItem;
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if (udi.Book.AudibleProductId != Book.AudibleProductId)
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return;
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switch (itemName)
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{
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case nameof(udi.Tags):
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{
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Book.UserDefinedItem.Tags = udi.Tags;
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NotifyPropertyChanged(nameof(DisplayTags));
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}
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break;
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case nameof(udi.BookStatus):
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{
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Book.UserDefinedItem.BookStatus = udi.BookStatus;
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NotifyPropertyChanged(nameof(Liberate));
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}
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break;
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case nameof(udi.PdfStatus):
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{
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Book.UserDefinedItem.PdfStatus = udi.PdfStatus;
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NotifyPropertyChanged(nameof(Liberate));
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}
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break;
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}
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if (!suspendCommit)
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Commit();
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}
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private bool suspendCommit = false;
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/// <summary>
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/// Begin editing the model, suspending commits until <see cref="EndEdit"/> is called.
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/// </summary>
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public void BeginEdit() => suspendCommit = true;
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/// <summary>
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/// Save all edits to the database.
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/// </summary>
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public void EndEdit()
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{
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Commit();
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suspendCommit = false;
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}
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private void Commit()
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{
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// We don't want LiberatedStatus.PartialDownload to be a persistent status.
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// If display/icon status is PartialDownload then save NotLiberated to db then restore PartialDownload for display
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var displayStatus = Book.UserDefinedItem.BookStatus;
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var saveStatus = displayStatus == LiberatedStatus.PartialDownload ? LiberatedStatus.NotLiberated : displayStatus;
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Book.UserDefinedItem.BookStatus = saveStatus;
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LibraryCommands.UpdateUserDefinedItem(Book);
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Book.UserDefinedItem.BookStatus = displayStatus;
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Refilter?.Invoke();
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}
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#endregion
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#region Model properties exposed to the view
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public Image Cover
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{
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get
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{
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return _cover;
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}
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private set
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{
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_cover = value;
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NotifyPropertyChanged();
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}
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}
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public string ProductRating { get; }
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public string PurchaseDate { get; }
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public string MyRating { get; }
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public string Series { get; }
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public string Title { get; }
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public string Length { get; }
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public string Authors { get; }
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public string Narrators { get; }
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public string Category { get; }
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public string Misc { get; }
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public string Description { get; }
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public string DisplayTags
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{
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get => string.Join("\r\n", Book.UserDefinedItem.TagsEnumerated);
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set => Book.UserDefinedItem.Tags = value;
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}
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public (LiberatedStatus BookStatus, LiberatedStatus? PdfStatus) Liberate
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{
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get => (LibraryCommands.Liberated_Status(LibraryBook.Book), LibraryCommands.Pdf_Status(LibraryBook.Book));
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set
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{
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LibraryBook.Book.UserDefinedItem.BookStatus = value.BookStatus;
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LibraryBook.Book.UserDefinedItem.PdfStatus = value.PdfStatus;
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}
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}
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#endregion
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#region Data Sorting
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private Dictionary<string, Func<object>> _memberValues { get; }
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/// <summary>
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/// Create getters for all member object values by name
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/// </summary>
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private Dictionary<string, Func<object>> CreateMemberValueDictionary() => new()
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{
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{ nameof(Title), () => GetSortName(Book.Title) },
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{ nameof(Series), () => GetSortName(Book.SeriesNames) },
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{ nameof(Length), () => Book.LengthInMinutes },
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{ nameof(MyRating), () => Book.UserDefinedItem.Rating.FirstScore },
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{ nameof(PurchaseDate), () => LibraryBook.DateAdded },
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{ nameof(ProductRating), () => Book.Rating.FirstScore },
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{ nameof(Authors), () => Authors },
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{ nameof(Narrators), () => Narrators },
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{ nameof(Description), () => Description },
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{ nameof(Category), () => Category },
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{ nameof(Misc), () => Misc },
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{ nameof(DisplayTags), () => DisplayTags },
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{ nameof(Liberate), () => Liberate.BookStatus }
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};
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// Instantiate comparers for every exposed member object type.
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private static readonly Dictionary<Type, IComparer> _memberTypeComparers = new()
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{
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{ typeof(string), new ObjectComparer<string>() },
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{ typeof(int), new ObjectComparer<int>() },
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{ typeof(float), new ObjectComparer<float>() },
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{ typeof(DateTime), new ObjectComparer<DateTime>() },
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{ typeof(LiberatedStatus), new ObjectComparer<LiberatedStatus>() },
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};
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public virtual object GetMemberValue(string memberName) => _memberValues[memberName]();
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public virtual IComparer GetMemberComparer(Type memberType) => _memberTypeComparers[memberType];
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private static readonly string[] _sortPrefixIgnores = { "the", "a", "an" };
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private static string GetSortName(string unformattedName)
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{
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var sortName = unformattedName
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.Replace("|", "")
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.Replace(":", "")
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.ToLowerInvariant()
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.Trim();
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if (_sortPrefixIgnores.Any(prefix => sortName.StartsWith(prefix + " ")))
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sortName = sortName.Substring(sortName.IndexOf(" ") + 1).TrimStart();
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return sortName;
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}
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#endregion
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#region Static library display functions
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/// <summary>
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/// This information should not change during <see cref="GridEntry"/> lifetime, so call only once.
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/// </summary>
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private static string GetDescriptionDisplay(Book book)
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{
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var doc = new HtmlAgilityPack.HtmlDocument();
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doc.LoadHtml(book.Description);
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var noHtml = doc.DocumentNode.InnerText;
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return
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noHtml.Length < 63 ?
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noHtml :
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noHtml.Substring(0, 60) + "...";
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}
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/// <summary>
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/// This information should not change during <see cref="GridEntry"/> lifetime, so call only once.
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/// Maximum of 5 text rows will fit in 80-pixel row height.
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/// </summary>
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private static string GetMiscDisplay(LibraryBook libraryBook)
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{
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var details = new List<string>();
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var locale = libraryBook.Book.Locale.DefaultIfNullOrWhiteSpace("[unknown]");
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var acct = libraryBook.Account.DefaultIfNullOrWhiteSpace("[unknown]");
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details.Add($"Account: {locale} - {acct}");
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if (libraryBook.Book.HasPdf)
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details.Add("Has PDF");
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if (libraryBook.Book.IsAbridged)
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details.Add("Abridged");
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if (libraryBook.Book.DatePublished.HasValue)
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details.Add($"Date pub'd: {libraryBook.Book.DatePublished.Value:MM/dd/yyyy}");
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// this goes last since it's most likely to have a line-break
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if (!string.IsNullOrWhiteSpace(libraryBook.Book.Publisher))
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details.Add($"Pub: {libraryBook.Book.Publisher.Trim()}");
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if (!details.Any())
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return "[details not imported]";
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return string.Join("\r\n", details);
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}
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#endregion
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~GridEntry()
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{
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UserDefinedItem.ItemChanged -= UserDefinedItem_ItemChanged;
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FileManager.PictureStorage.PictureCached -= PictureStorage_PictureCached;
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}
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}
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}
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