public IActionResult CheckoutALibraryBook(Guid bookId)
{
ILibraryBook book = _libraryService.Book(bookId);
string message = string.Empty;
if (book != null)
{
DateTime dueDate = DateTime.Now.AddDays(30);
CheckoutResult result = book.Checkout();
if (result.CheckedOutResultStatus == CheckedOutResultStatus.Ok)
{
return(Ok(new { BookId = bookId, DueDate = dueDate }));
}
message = result.Message;
}
return(BadRequest(message));
}