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 RemoveAsync()
{
if (!_books.Contains(this))
{
return;
}
_books.Remove(this);
_context.Books.Remove(_efBookDto);
await _context.SaveChangesAsync();
var bookFile = await StorageFile.GetFileFromPathAsync(BookPath);
await bookFile.DeleteAsync();
var thumbnailFile = await StorageFile.GetFileFromPathAsync(ThumbnailPath);
await thumbnailFile.DeleteAsync();
}
public async Task MigrateAsync()
{
SqliteBook[] books = null;
SqliteBookmark[] bookmarks = null;
await Task.Factory.StartNew(() =>
{
using (var connection = new SQLiteConnection(DbPath))
{
books = connection.Table <SqliteBook>().ToArray();
bookmarks = connection.Table <SqliteBookmark>().ToArray();
}
});
using (var context = new EfBooksContext())
{
context.Books.AddRange(books.Select(book => new EfBookDto
{
BookPath = book.Path,
LastOpenedPage = book.LastOpenedPage,
LastOpeningTime = book.LastOpeningTime,
PageCount = book.PageCount,
ThumbnailPath = book.ThumbnailPath,
Title = book.Title,
Bookmarks = bookmarks
.Where(bookmark => bookmark.BookId == book.Id)
.Select(bookmark => new EfBookmarkDto
{
PageNumber = bookmark.PageNumber,
Title = bookmark.Title
}).ToList()
}));
await context.SaveChangesAsync();
}
var dbFile = await StorageFile.GetFileFromPathAsync(DbPath);
await dbFile.DeleteAsync();
}
public async Task SaveChangesAsync()
{
await _context.SaveChangesAsync();
}