/// <summary> Shows HTML source for Shopping Cart of one customer. (In table with price calculation) </summary>
/// <param name="customer">Customer object.</param>
/// <param name="model">Model object. (For getting book details) </param>
public void ShowShoppingCart(Customer customer, ModelStore model)
{
var cartCount = customer.ShoppingCart.Items.Count;
PrintHeadAndMenu(customer.FirstName, cartCount);
if (cartCount == 0) // Special output case when cart is empty
{
stdOut.WriteLine(" Your shopping cart is EMPTY.");
}
else
{
stdOut.WriteLine(" Your shopping cart:");
stdOut.WriteLine(" <table>");
stdOut.WriteLine(" <tr>");
stdOut.WriteLine(" <th>Title</th>");
stdOut.WriteLine(" <th>Count</th>");
stdOut.WriteLine(" <th>Price</th>");
stdOut.WriteLine(" <th>Actions</th>");
stdOut.WriteLine(" </tr>");
decimal totalPrice = 0;
foreach (var item in customer.ShoppingCart.Items)
{
var book = model.GetBook(item.BookId);
var bookTotalPrice = item.Count * book.Price;
totalPrice += bookTotalPrice;
stdOut.WriteLine(" <tr>");
stdOut.WriteLine(" <td><a href=\"/Books/Detail/" + item.BookId + "\">" + book.Title + "</a></td>");
stdOut.WriteLine(" <td>" + item.Count + "</td>");
if (item.Count == 1)
{
stdOut.WriteLine(" <td>" + bookTotalPrice + " EUR</td>");
}
else
{
stdOut.WriteLine(" <td>" + item.Count + " * " + book.Price + " = " + bookTotalPrice + " EUR</td>");
}
stdOut.WriteLine(" <td><<a href=\"/ShoppingCart/Remove/" + item.BookId + "\">Remove</a>></td>");
stdOut.WriteLine(" </tr>");
}
stdOut.WriteLine(" </table>");
stdOut.WriteLine(" Total price of all items: " + totalPrice + " EUR");
}
stdOut.WriteLine("</body>");
stdOut.WriteLine("</html>");
PrintCmdEnd();
}
/// <summary> Main function which handles Loading from input and processing to output </summary>
/// <param name="args">Program arguments.</param>
/// <param name="stdIn">Input stream object.</param>
/// <param name="stdOut">Output stream object.</param>
public static void Run(string[] args, TextReader stdIn, TextWriter stdOut)
{
ModelStore store = ModelStore.LoadFrom(stdIn);
if (store == null)
{
stdOut.Write("Data error.");
return;
}
Viewer view = new Viewer(stdOut);
Controller controller = new Controller(store, view);
controller.ProcessAllCommands(stdIn);
}
public static ModelStore LoadFrom(TextReader reader)
{
var store = new ModelStore();
try {
if (reader.ReadLine() != "DATA-BEGIN")
{
return(null);
}
while (true)
{
string line = reader.ReadLine();
if (line == null)
{
return(null);
}
else if (line == "DATA-END")
{
break;
}
string[] tokens = line.Split(';');
switch (tokens[0])
{
case "BOOK":
store.books.Add(new Book {
Id = int.Parse(tokens[1]),
Title = tokens[2],
Author = tokens[3],
Price = decimal.Parse(tokens[4])
});
break;
case "CUSTOMER":
store.customers.Add(new Customer {
Id = int.Parse(tokens[1]),
FirstName = tokens[2],
LastName = tokens[3]
});
break;
case "CART-ITEM":
var customer = store.GetCustomer(int.Parse(tokens[1]));
if (customer == null)
{
return(null);
}
customer.ShoppingCart.Items.Add(new ShoppingCartItem {
BookId = int.Parse(tokens[2]),
Count = int.Parse(tokens[3])
});
break;
default:
return(null);
}
}
}
catch (Exception ex) {
if (ex is FormatException || ex is IndexOutOfRangeException)
{
return(null);
}
throw;
}
return(store);
}
public Controller(ModelStore model, Viewer view)
{
this.model = model;
this.view = view;
}
public Controller(ModelStore model, Viewer view)
{
this.model = model;
this.view = view;
}
/// <summary> Shows HTML source for Shopping Cart of one customer. (In table with price calculation) </summary>
/// <param name="customer">Customer object.</param>
/// <param name="model">Model object. (For getting book details) </param>
public void ShowShoppingCart(Customer customer, ModelStore model)
{
var cartCount = customer.ShoppingCart.Items.Count;
PrintHeadAndMenu(customer.FirstName, cartCount);
if(cartCount == 0) // Special output case when cart is empty
stdOut.WriteLine(" Your shopping cart is EMPTY.");
else {
stdOut.WriteLine(" Your shopping cart:");
stdOut.WriteLine(" <table>");
stdOut.WriteLine(" <tr>");
stdOut.WriteLine(" <th>Title</th>");
stdOut.WriteLine(" <th>Count</th>");
stdOut.WriteLine(" <th>Price</th>");
stdOut.WriteLine(" <th>Actions</th>");
stdOut.WriteLine(" </tr>");
decimal totalPrice = 0;
foreach(var item in customer.ShoppingCart.Items) {
var book = model.GetBook(item.BookId);
var bookTotalPrice = item.Count * book.Price;
totalPrice += bookTotalPrice;
stdOut.WriteLine(" <tr>");
stdOut.WriteLine(" <td><a href=\"/Books/Detail/" + item.BookId + "\">" + book.Title + "</a></td>");
stdOut.WriteLine(" <td>" + item.Count + "</td>");
if(item.Count == 1)
stdOut.WriteLine(" <td>" + bookTotalPrice + " EUR</td>");
else
stdOut.WriteLine(" <td>" + item.Count + " * " + book.Price + " = " + bookTotalPrice + " EUR</td>");
stdOut.WriteLine(" <td><<a href=\"/ShoppingCart/Remove/" + item.BookId + "\">Remove</a>></td>");
stdOut.WriteLine(" </tr>");
}
stdOut.WriteLine(" </table>");
stdOut.WriteLine(" Total price of all items: " + totalPrice + " EUR");
}
stdOut.WriteLine("</body>");
stdOut.WriteLine("</html>");
PrintCmdEnd();
}
public static ModelStore LoadFrom(TextReader reader)
{
var store = new ModelStore();
try {
if(reader.ReadLine() != "DATA-BEGIN") {
return null;
}
while(true) {
string line = reader.ReadLine();
if(line == null) {
return null;
}
else if(line == "DATA-END") {
break;
}
string[] tokens = line.Split(';');
switch(tokens[0]) {
case "BOOK":
store.books.Add(new Book {
Id = int.Parse(tokens[1]),
Title = tokens[2],
Author = tokens[3],
Price = decimal.Parse(tokens[4])
});
break;
case "CUSTOMER":
store.customers.Add(new Customer {
Id = int.Parse(tokens[1]),
FirstName = tokens[2],
LastName = tokens[3]
});
break;
case "CART-ITEM":
var customer = store.GetCustomer(int.Parse(tokens[1]));
if(customer == null) {
return null;
}
customer.ShoppingCart.Items.Add(new ShoppingCartItem {
BookId = int.Parse(tokens[2]),
Count = int.Parse(tokens[3])
});
break;
default:
return null;
}
}
}
catch(Exception ex) {
if(ex is FormatException || ex is IndexOutOfRangeException) {
return null;
}
throw;
}
return store;
}
