/// <summary> Adds book to Customer's ShoppingCart or increases book's count by 1.</summary>
/// <param name="customer">Customer object for custId from command.</param>
/// <param name="book">Book object for BookId from command.</param>
/// <exception cref="System.Exception">Throws when customer or book doesn't exist.</exception>
internal void AddBook(Customer customer, Book book)
{
if(customer == null || book == null)
throw new Exception("Customer or Book doesn't exist.");
ShoppingCart cart = customer.ShoppingCart;
ShoppingCartItem cItem = cart.Items.Find(itm => itm.BookId == book.Id);
if(cItem != null)
cItem.Count++;
else
cart.Items.Add(new ShoppingCartItem {
BookId = book.Id,
Count = 1
});
view.ShowShoppingCart(customer, model);
}
/// <summary> Shows HTML source for one book detail. </summary>
/// <param name="item">Book object from model.</param>
/// <param name="customer">Customer object.</param>
public void ShowBookDetail(Book item, Customer customer)
{
PrintHeadAndMenu(customer.FirstName, customer.ShoppingCart.Items.Count);
stdOut.WriteLine(" Book details:");
stdOut.WriteLine(" <h2>" + item.Title + "</h2>");
stdOut.WriteLine(" <p style=\"margin-left: 20px\">");
stdOut.WriteLine(" Author: " + item.Author + "<br />");
stdOut.WriteLine(" Price: " + item.Price + " EUR<br />");
stdOut.WriteLine(" </p>");
stdOut.WriteLine(" <h3><<a href=\"/ShoppingCart/Add/" + item.Id + "\">Buy this book</a>></h3>");
stdOut.WriteLine("</body>");
stdOut.WriteLine("</html>");
PrintCmdEnd();
}
/// <summary> Removes book from Customer's ShoppingCart or decreases book's count by 1. </summary>
/// <param name="customer">Customer object for custId from command.</param>
/// <param name="book">Book object for BookId from command.</param>
/// <exception cref="System.Exception">Throws when Book isn't in Customer's ShoppingCart.</exception>
/// <exception cref="System.Exception">
/// Throws when Book isn't in Customer's ShoppingCart or when customer or book doesn't exist.
/// </exception>
internal void RemoveBook(Customer customer, Book book)
{
if(customer == null || book == null)
throw new Exception("Customer or Book doesn't exist.");
ShoppingCart cart = customer.ShoppingCart;
ShoppingCartItem cItem = cart.Items.Find(itm => itm.BookId == book.Id);
if(cItem == null)
throw new Exception("Book doesn't exist in Customers ShoppingCart.");
if(cItem.Count > 1)
cItem.Count--;
else
cart.Items.Remove(cItem);
view.ShowShoppingCart(customer, model);
}