Client.java

package estore.services.implem;

import estore.data.Cart;
import estore.data.Order;
import estore.services.interfaces.ICartLane;
import estore.services.interfaces.IFastLane;
import estore.services.interfaces.IJustHaveALook;
import estorePojo.exceptions.InsufficientBalanceException;
import estorePojo.exceptions.InvalidCartException;
import estorePojo.exceptions.UnknownAccountException;
import estorePojo.exceptions.UnknownItemException;

public class Client implements Runnable {

	private IJustHaveALook forLookingStore;
	private IFastLane fastStore;
	private ICartLane cartStore;

	public Client(IJustHaveALook forLookingStore, IFastLane fastStore, ICartLane cartStore) {
		this.forLookingStore = forLookingStore;
		this.fastStore = fastStore;
		this.cartStore = cartStore;
	}
	// -----------------------------------------------------
	// Implementation of the Runnable interface
	// -----------------------------------------------------

	public void run() {

		// Scenario 1
		// Direct ordering of an item
		// The scenario is run twice
		System.out.println("Scenario 1");
		scenario1("CD", 2, "Lille", "Bob");
		scenario1("CD", 1, "Lille", "Anne");
		System.out.println();

		// Scenario 2
		// Ordering of several items by using a cart
		System.out.println("Scenario 2");
		scenario2(new String[] { "DVD", "CD" }, new int[] { 2, 1 }, "Lille", "Bob");
		System.out.println();
	}

	private void scenario1(String item, int qty, String address, String account) {

		try {
			_scenario1(item, qty, address, account);
		} catch (Exception e) {
			System.err.println("Exception: " + e.getMessage());
			e.printStackTrace();
		}
	}

	private void _scenario1(String item, int qty, String address, String account)
			throws UnknownItemException, InsufficientBalanceException, UnknownAccountException {

		System.out.println("Ordering " + qty + " " + item + " for " + account + "...");
		Order order = fastStore.oneShotOrder(this, item, qty, address, account);
		System.out.println(order);
	}

	private void scenario2(String[] items, int[] qties, String address, String account) {

		try {
			_scenario2(items, qties, address, account);
		} catch (Exception e) {
			System.err.println("Exception: " + e.getMessage());
			e.printStackTrace();
		}
	}

	private void _scenario2(String[] items, int[] qties, String address, String account)
			throws InsufficientBalanceException, UnknownAccountException, UnknownItemException, InvalidCartException {

		System.out.println("Ordering for " + account + "...");
		Cart cart = null;
		for (int i = 0; i < items.length; i++) {
			System.out.println("Item: " + items[i] + ", quantity: " + qties[i]);
			cart = cartStore.addItemToCart(cart, this, items[i], qties[i]);
		}
		Order order = cartStore.pay(cart, address, account);
		System.out.println(order);
	}
}