public IList <Book> GetBooksForReader(int currentId)
{
var reader = ReaderRepository.GetSingleReader(ReaderRepository.CurrentId);
ReaderRepository.LibraryContext.Entry(reader)
.Collection(b => b.BooksReaders)
.Load();
List <BookReader> brList = reader.BooksReaders.Where(br => br.ReaderId == currentId).ToList();
return(BookRepository.GetBooks()
.Where(b => (b.BookReaders.ToList()
.Intersect(brList)
.ToList().Count != 0))
.ToList());
}
public void Borrow(int bookId)
{
var book = BookRepository.GetSingleBook(bookId);
var reader = ReaderRepository.GetSingleReader(ReaderRepository.CurrentId);
if (reader.CurrentBorrow >= Reader.totalBorrow || book.BorrowedCopies >= book.TotalCopies)
{
return;
}
var bookreader = new BookReader()
{
Book = book, Reader = reader
};
book.BookReaders.Add(bookreader);
reader.BooksReaders.Add(bookreader);
book.BorrowedCopies++;
reader.CurrentBorrow++;
LibraryContext.SaveChanges();
}
public void Back(int bookId)
{
var book = BookRepository.GetSingleBook(bookId);
var reader = ReaderRepository.GetSingleReader(ReaderRepository.CurrentId);
ReaderRepository.LibraryContext.Entry(book)
.Collection(b => b.BookReaders)
.Load();
ReaderRepository.LibraryContext.Entry(reader)
.Collection(b => b.BooksReaders)
.Load();
var bookReader = book.BookReaders.FirstOrDefault(x => x.Book == book && x.Reader == reader);
if (bookReader.DueTime.CompareTo(DateTime.Now) < 0)
{
reader.Fine += 10;
}
book.BookReaders.Remove(bookReader);
reader.BooksReaders.Remove(bookReader);
book.BorrowedCopies--;
reader.CurrentBorrow--;
ReaderRepository.LibraryContext.SaveChanges();
}