public async Task <BookListModel> AddBookToList(string bookId, int bookListId)
{
BookListModel bookList = await GetRaw(bookListId, true);
if (bookList == null)
{
return(null);
}
BookModel book = await _book.Add(await _book.Get(bookId));
if (book == null)
{
return(null);
}
if (bookList.Books.Select(b => b.Id).Contains(book.Id))
{
return(bookList);
}
BookListModel currentBookList = await _book.UserBookList(book.Id);
if (currentBookList != null)
{
List <Book_BookListModel> book_bookList_list = currentBookList.Book_BookLists.Where(b => b.Book.Id == book.Id).ToList();
_context.Remove(book_bookList_list.First());
}
bookList.Book_BookLists.Add(new Book_BookListModel()
{
Book = book,
BookList = bookList
});
_context.Update(bookList);
await _context.SaveChangesAsync();
return(bookList);
}
public async Task <bool> Delete(int id)
{
AuthorModel item = await Get(id);
if (item == null)
{
return(true);
}
try
{
_context.Remove(item);
await _context.SaveChangesAsync();
return(true);
}
catch (DbUpdateConcurrencyException)
{
item = await Get(id);
return(item == null);
}
}