public static bool isBookLoanExceeds30Days(Book book, ref LibraryBooksOperationResult result, InfoRequest infoReq)
{
if (book.LoanDate.Value.AddDays(30) < infoReq.ReturnDate)
{
result.Message = ValidationMessages.BookLoanExceeds30Days;
return true;
}
return false;
}
public static bool isBookAlreadyRegistered(Book book, ref LibraryBooksOperationResult result)
{
if (book != null)
{
result.Message = ValidationMessages.BookAlreadyRegistered;
return true;
}
return false;
}
public static bool isBookLoaned(Book book, ref LibraryBooksOperationResult result)
{
if (book != null && book.IsLoaned.HasValue && book.IsLoaned.Value)
{
result.Message = ValidationMessages.BookAlreadyLoaned;
return true;
}
return false;
}
public static bool isBookNull(Book book, ref LibraryBooksOperationResult result)
{
if (book == null)
{
result.Message = ValidationMessages.BookNotExist;
return true;
}
return false;
}
private LibraryBooksOperationResult validate(InfoRequest infoReq, Book book)
{
var result = new LibraryBooksOperationResult();
result.Success = !LibraryValidator.isBookNull(book, ref result)
&& LibraryValidator.isBookLoaned(book, ref result)
&& LibraryValidator.isBookLoanExceeds30Days(book, ref result, infoReq);
return result;
}
private void Return(InfoRequest infoRequest, Book book)
{
book.IsLoaned = false;
book.ReturnDate = infoRequest.ReturnDate;
this._bookRepository.Edit(book);
}
