/// <summary>
/// Adds a new book to storage
/// </summary>
/// <param name="newBook">book to add</param>
public void AddBook(Book newBook)
{
if (newBook == null)
{
throw new ArgumentNullException("Book must be not null");
}
List <Book> books = new List <Book>(storage.LoadFromStorage());
if (books.Contains(newBook))
{
throw new BookExistsInStorageException("Book is already exists in storage");
}
books.Add(newBook);
storage.SaveToStorage(books);
logger.Debug("Book was added");
}
/// <summary>
/// Saves to storage.
/// </summary>
/// <param name="storage">The storage.</param>
/// <exception cref="ArgumentNullException">storage</exception>
public void SaveToStorage(IBookListStorage storage)
{
Logger.Info($"Saving to storage started!");
if (ReferenceEquals(storage, null))
{
Logger.Error($"{nameof(storage)} is null!");
throw new ArgumentNullException($"{nameof(storage)} is null");
}
storage.SaveToStorage(BookList);
Logger.Info($"Saving to storage completed!");
}