/// <summary>
/// Refresh books local collection.
/// </summary>
/// <param name="books">Books to be saved.</param>
/// <returns>Books collection.</returns>
public IList <Book> Refresh(AbstractBookStorage books)
{
try
{
booksRepository.Refresh(books);
logger.Info("Books were refreshed.");
}
catch (Exception e)
{
logger.Error(e.Message);
throw;
}
}
static void Main(string[] args)
{
storage = new BookListStorage();
bookShop = new BookListService(storage);
Console.WriteLine("Next commands are availiable:" + "\n");
Console.WriteLine("1. Show all books");
Console.WriteLine("2. Add a book");
Console.WriteLine("3. Delete a book");
Console.WriteLine("4. Find appropriate book");
Console.WriteLine("5. Sort books" + "\n");
while (alive)
{
try
{
command = Console.ReadLine();
switch (command)
{
case "1": ShowAvailableBooks(bookShop); break;
case "2": AddBookToShop(bookShop); break;
case "3": DeleteBook(bookShop); break;
default: Console.WriteLine("Sorry, this command still in process.."); break;
}
}
catch (InvalidBookDataException e)
{
Console.WriteLine(e.message);
}
catch (BookAlreadyExistsException e)
{
Console.WriteLine(e.message);
}
catch (BookNotExistsException e)
{
Console.WriteLine(e.message);
}
}
}
/// <summary>
/// Find appropriate books through books collection.
/// </summary>
/// <param name="parameter">Criteria.</param>
/// <param name="books">Collection.</param>
/// <returns>Appropriate books collection.</returns>
public IEnumerable <Book> FindBooks(IFinder <Book> predicate, AbstractBookStorage books)
{
IList <Book> allBooksInStorage = Refresh(books);
List <Book> findedBooks = new List <Book>();
logger.Info($"Searching books by {predicate} criteria.");
foreach (var book in allBooksInStorage)
{
if (predicate.BookIsRight(book))
{
findedBooks.Add(book);
}
}
if (findedBooks.Count == 0)
{
logger.Error("We can not find book(s) with such criteria.");
}
return(findedBooks);
}
/// <summary>
/// Constructor with a logger instance.
/// </summary>
/// <param name="storage">Storage wich contain all books data.</param>
/// <param name="logger">Logger instance.</param>
public BookListService(AbstractBookStorage storage, Logs logger)
{
booksRepository = storage;
this.logger = logger;
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="storage">Storage wich contain all books data.</param>
public BookListService(AbstractBookStorage storage)
{
booksRepository = storage;
logger = new Logs();
}
