public async Task <IBook> AddBookAsync(IStorageFile file)
{
if (file == null)
{
throw new ArgumentNullException(nameof(file));
}
var document = await DjvuDocument.LoadAsync(file);
var bookDto = new EfBookDto
{
PageCount = document.PageCount,
Title = Path.GetFileNameWithoutExtension(file.Name),
LastOpeningTime = DateTime.Now
};
_context.Books.Add(bookDto);
await _context.SaveChangesAsync();
var booksFolder = await ApplicationData.Current.LocalFolder.CreateFolderAsync("Books", CreationCollisionOption.OpenIfExists);
var bookFile = await file.CopyAsync(booksFolder, $"{bookDto.Id}.djvu", NameCollisionOption.ReplaceExisting);
bookDto.BookPath = bookFile.Path;
await _context.SaveChangesAsync();
var book = new EfBook(bookDto, _context, _books);
await book.UpdateThumbnailAsync();
_books.Add(book);
return(book);
}
public async Task UpdateThumbnailAsync()
{
var bookFile = await StorageFile.GetFileFromPathAsync(BookPath);
var document = await DjvuDocument.LoadAsync(bookFile);
var thumbnailFile = await SaveThumbnail(_efBookDto.Id, document);
ThumbnailPath = thumbnailFile.Path;
await SaveChangesAsync();
}
public async void OnNavigatedTo(NavigationEventArgs e)
{
IsProgressVisible = true;
_book = e.Parameter as IBook;
if (_book != null)
{
_file = await StorageFile.GetFileFromPathAsync(_book.BookPath);
}
else if (e.Parameter is IStorageFile)
{
_file = (IStorageFile)e.Parameter;
}
else
{
throw new Exception("Invalid parameter.");
}
DjvuDocument document;
try
{
document = await DjvuDocument.LoadAsync(_file);
}
catch
{
if (Debugger.IsAttached)
{
throw;
}
IsProgressVisible = false;
ShowFileOpeningError();
return;
}
CurrentDocument = document;
CurrentPageNumber = _book?.LastOpenedPage ?? 1;
TotalPageNumber = document.PageCount;
if (_book != null)
{
_book.LastOpeningTime = DateTime.Now;
await _book.SaveChangesAsync();
_bookmarks = _book?.Bookmarks;
((INotifyCollectionChanged)_bookmarks).CollectionChanged += Bookmarks_CollectionChanged;
UpdateIsCurrentPageBookmarked();
}
_outline = await document.GetOutlineAsync();
IsProgressVisible = false;
ShowOutlineCommand.RaiseCanExecuteChanged();
AddBookmarkCommand.RaiseCanExecuteChanged();
RemoveBookmarkCommand.RaiseCanExecuteChanged();
ShowBookmarksCommand.RaiseCanExecuteChanged();
var applicationView = ApplicationView.GetForCurrentView();
applicationView.Title = _book?.Title ?? _file.Name;
_dataTransferManager.DataRequested += DataRequestedHandler;
CoreApplication.Suspending += ApplicationSuspendingHandler;
}
