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* New event SearchEngineCommands.SearchEngineUpdated

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* Clean up redundant event notifications
This commit is contained in:
Robert McRackan 2022-05-25 10:09:27 -04:00
parent 7987dfb819
commit 3f2899e97e
13 changed files with 147 additions and 92 deletions
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65
Source/ApplicationServices/LibraryCommands.cs
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@ -253,11 +253,7 @@ namespace ApplicationServices
#endregion
// call this whenever books are added or removed from library
private static void finalizeLibrarySizeChange()
{
SearchEngineCommands.FullReIndex();
LibrarySizeChanged?.Invoke(null, null);
}
private static void finalizeLibrarySizeChange() => LibrarySizeChanged?.Invoke(null, null);
/// <summary>Occurs when the size of the library changes. ie: books are added or removed</summary>
public static event EventHandler LibrarySizeChanged;
@ -265,9 +261,47 @@ 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 BookUserDefinedItemCommitted;
public static event EventHandler<IEnumerable<Book>> BookUserDefinedItemCommitted;
#region Update book details
public static int UpdateBookStatus(this Book book, LiberatedStatus bookStatus)
{
book.UserDefinedItem.BookStatus = bookStatus;
return UpdateUserDefinedItem(book);
}
public static int UpdatePdfStatus(this Book book, LiberatedStatus pdfStatus)
{
book.UserDefinedItem.PdfStatus = pdfStatus;
return UpdateUserDefinedItem(book);
}
public static int UpdateBook(
this Book book,
string tags = null,
LiberatedStatus? bookStatus = null,
LiberatedStatus? pdfStatus = null)
=> UpdateBooks(tags, bookStatus, pdfStatus, book);
public static int UpdateBooks(
string tags = null,
LiberatedStatus? bookStatus = null,
LiberatedStatus? pdfStatus = null,
params Book[] books)
{
foreach (var book in books)
{
// blank tags are expected. null tags are not
if (tags is not null && book.UserDefinedItem.Tags != tags)
book.UserDefinedItem.Tags = tags;
if (bookStatus is not null && book.UserDefinedItem.BookStatus != bookStatus.Value)
book.UserDefinedItem.BookStatus = bookStatus.Value;
// even though PdfStatus is nullable, there's no case where we'd actually overwrite with null
if (pdfStatus is not null && book.UserDefinedItem.PdfStatus != pdfStatus.Value)
book.UserDefinedItem.PdfStatus = pdfStatus.Value;
}
return UpdateUserDefinedItem(books);
}
public static int UpdateUserDefinedItem(params Book[] books) => UpdateUserDefinedItem(books.ToList());
public static int UpdateUserDefinedItem(IEnumerable<Book> books)
{
@ -283,23 +317,8 @@ namespace ApplicationServices
context.Attach(book.UserDefinedItem).State = Microsoft.EntityFrameworkCore.EntityState.Modified;
var qtyChanges = context.SaveChanges();
if (qtyChanges == 0)
return 0;
// 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
if (qtyChanges > 15)
SearchEngineCommands.FullReIndex();
else
{
foreach (var book in books)
{
SearchEngineCommands.UpdateLiberatedStatus(book);
SearchEngineCommands.UpdateBookTags(book);
}
}
BookUserDefinedItemCommitted?.Invoke(null, null);
if (qtyChanges > 0)
BookUserDefinedItemCommitted?.Invoke(null, books);
return qtyChanges;
}