public static void RemoveCopyByISBN(string ISBN)
{
List <copy> Copies = CopyService.GetCopiesByISBN(ISBN);
foreach (copy c in Copies)
{
RemoveCopy(c.Barcode);
}
}
public static bool StoreBook(book b, int copies, string library)
{
BookRepository.StoreBook(b);
for (int i = 0; i < copies; i++)
{
CopyService.CreateCopy(b.ISBN, library);
}
return(true);
}
public static bool HasBorrows(string isbn)
{
foreach (copy c in CopyRepository.GetCopiesByISBN(isbn))
{
if (CopyService.IsBorrowed(c))
{
return(false);
}
}
return(true);
}
public static bool RemoveBook(string isbn)
{
if (HasBorrows(isbn) || HasAuthors(isbn))
{
return(false);
}
CopyService.RemoveCopyByISBN(isbn);
BookAuthorService.RemoveBookAuthorByISBN(isbn);
BookRepository.RemoveBook(isbn);
return(true);
}