public Boolean isNumberOfBooksLessThenThree(IListUserBorrowedBooks borrowedBooks)
{
if (borrowedBooks.getAll().Count() < 3)
{
return(true);
}
return(false);
}
public String returnTheBook(IListUserBorrowedBooks borrowedBooks,
BorrowedBook borrowedBook)
{
if (borrowedBooks.getOne(borrowedBook.bookUUID) != null)
{
borrowedBooks.remove(borrowedBook);
return($"{borrowedBook.bookTitle} returned");
}
return("no such a book in your collection");
}
public String borrowTheBook(IListUserBorrowedBooks borrowedBooks,
BorrowedBook borrowedBook)
{
String numberOfBookIssueMessage = $"You have reached the maximum of books return some if you want to borrow {borrowedBook.bookTitle}";
String periodOfTimeIssueMessage = $"You can't borrow {borrowedBook.bookTitle} due to exceeded time limit on at least one borrow";
if (!isNumberOfBooksLessThenThree(borrowedBooks) && !isPeriodOfTimeRespected(borrowedBook))
{
return($"{numberOfBookIssueMessage} and {periodOfTimeIssueMessage}");
}
if (!isNumberOfBooksLessThenThree(borrowedBooks))
{
return(numberOfBookIssueMessage);
}
if (!isPeriodOfTimeRespected(borrowedBook))
{
return(periodOfTimeIssueMessage);
}
borrowedBooks.save(borrowedBook);
return($"{borrowedBook.bookTitle} borrowed");
}
