CashRegister

package cashregister;

import java.util.Collection;

import cashregister.ui.ICashRegisterUI;
import container.Container;
import managementserver.ISubjectManagementServer;
import paymentprovider.IPayment;
import rbvs.product.IShoppingCartElement;
import rbvs.product.Product;
import rbvs.record.IInvoice;
import rbvs.record.Invoice;
import tree.ITree;
import tree.ProductTree;
import util.Tuple;
import util.searchable.ProductNameFilter;

public class CashRegister extends Object
implements ICashRegister, IObserver {

    private long id;
    private Collection<IInvoice> records;
    private Collection<ICashRegisterUI> uis;
    private ITree<rbvs.product.IProduct> products = new ProductTree();
    private Collection<Tuple<ISubjectManagementServer,Boolean>> subjects;
    private Collection<IShoppingCart> shoppingCarts; //this is nowhere to be seen on diagram but i cant do anything without it

    public CashRegister(long id){
        this.id = id;
        this.shoppingCarts = new Container<>();
        this.records = new Container<>();
        this.uis = new Container<>();
        this.subjects = new Container<>();
    }


    @Override
    public void activateNotifications(ISubjectManagementServer subject) {
        // TODO Auto-generated method stub
        for (Tuple<ISubjectManagementServer, Boolean> t : subjects) {
            if(t.getValueA().equals(subject) && t.getValueB() == false)
                t.setValueB(true);
        }
        this.subjects.add(new Tuple<ISubjectManagementServer, Boolean>(subject, true));
        }




    @Override
    public void deactivateNotifications(ISubjectManagementServer subject) {
        // TODO Auto-generated method stub
        for(Tuple<ISubjectManagementServer, Boolean> t : subjects) {
            if(t.valueA.equals(subject) && t.valueB.equals(true)) {
                t.setValueB(false);
            }
        }

    }

    @Override
    public void notifyChange(ISubjectManagementServer subject) {
        // TODO Auto-generated method stub
        for (Tuple<ISubjectManagementServer, Boolean> t : subjects) {
            if (t.getValueA().equals(subject) && t.getValueB() == true){
                this.products = subject.getChanges();

            }
        }

    }

    public boolean addProductToShoppingCart​(long id, IShoppingCartElement element) {
        // TODO Auto-generated method stub
        if(element != null && id > 0) {
            for(IShoppingCart s : this.shoppingCarts) {
                if(s.getShoppingCartID() == id) {
                    s.addElement(element.deepCopy());
                    return true;
                }
            }
        }
        return false;

    }

    @Override
    public Long addShoppingCart() {
        // TODO Auto-generated method stub
        IShoppingCart cart = ShoppingCartFactory.createShoppingCart();
        this.shoppingCarts.add(cart);
        return cart.getShoppingCartID();
    }

    @Override
    public void displayProducts() {
        // TODO Auto-generated method stub
         for(ICashRegisterUI u : uis){
                u.displayProducts(products);
            }
         }

    @Override
    public void displayRecords() {
        // TODO Auto-generated method stub
         for(ICashRegisterUI u : uis){
                u.displayRecords(records);
            }
    }

    @Override
    public void displayShoppingCart(long id) {
        // TODO Auto-generated method stub
        for(ICashRegisterUI i : uis){
            i.displayShoppingCart(this.findShoppingCartById(id));
        }

    }

    @Override
    public void displayShoppingCarts() {
        // TODO Auto-generated method stub
         for(ICashRegisterUI i : uis){
                i.displayShoppingCarts(shoppingCarts);
            }


    }

    @Override
    public long getID() {
        // TODO Auto-generated method stub
        return this.id;
    }

    @Override
    public Collection<IShoppingCart> getShoppingCarts() {
        // TODO Auto-generated method stub
        return this.shoppingCarts;

    }

    @Override
    public IInvoice payShoppingCart(long id, IPayment provider) throws ShoppingCartNotFoundException {
        Collection<IShoppingCartElement> elements = new Container<>();
        float sum = 0;

        IShoppingCart cart = findShoppingCartById(id);
        if(cart == null) {
            throw new ShoppingCartNotFoundException(this.id, id);
        }
        for(IShoppingCartElement element : cart.currentElements()) {
            sum += element.getPrice();
        }
        rbvs.record.PaymentTransaction payment = provider.pay(sum);
        IInvoice invoice = new Invoice();
        for(IShoppingCartElement element : cart.currentElements()) {
            elements.add(element.deepCopy());
        }
        invoice.setInvoiceProducts(elements);
        invoice.addPaymentTransaction(payment);
        records.add(invoice);
        cart.currentElements().clear();
        return invoice;
    }

    protected IShoppingCart findShoppingCartById(Long id) {
        for(IShoppingCart cart : this.getShoppingCarts()) {
            if(cart.getShoppingCartID().equals(id)) {
                return cart;
            }
        }
        return null;

        }

    @Override
    public void registerCashRegisterUI(ICashRegisterUI arg0) {
        // TODO Auto-generated method stub
        if(!uis.contains(arg0)) {
            uis.add(arg0);
        }

    }

    @Override
    public IShoppingCartElement selectProduct(String product) {
        // TODO Auto-generated method stub
          return (IShoppingCartElement) this.products.searchByFilter(new ProductNameFilter(), product);

    }

    @Override
    public IShoppingCartElement selectProduct(Product arg0) {
        // TODO Auto-generated method stub
        return (IShoppingCartElement) this.products.findNode(arg0);

    }

    @Override
    public void unregisterCashRegisterUI(ICashRegisterUI arg0) {
        // TODO Auto-generated method stub
         if(uis.contains(arg0)){
                uis.remove(arg0);
            }
    }


    @Override
    public boolean addProductToShoppingCart(long id, IShoppingCartElement element) {
        // TODO Auto-generated method stub
         if(element != null && id > 0) {
                for(IShoppingCart s : this.shoppingCarts) {
                    if(s.getShoppingCartID() == id) {
                        s.addElement(element.deepCopy());
                        return true;
                    }
                }
            }
            return false;
        //return false;
    }

    //konsturktor
    /*public CashRegister(long id) {
        this.id=id;
        this.records = new Container<>();
        this.uis = new Container<>();
        this.subjects = new Container<>();
        //this.products = new Container<>();

    }
*/



}