package com.briup.bean;

import java.util.Collection;

import java.util.Map;

import java.util.TreeMap;

public class ShoppingCart {

private Map<Long, OrderLine> map =

new TreeMap<Long,OrderLine>();

public Map<Long, OrderLine> getMap() {

return map;

}

public void addOrderline(OrderLine line){

OrderLine l =

map.get(line.getBook().getId());

if(l!=null){

long num = l.getNum()+line.getNum();

l.setNum(num);

}else{

map.put(line.getBook().getId(), line);

}

}

public void modifyLine(Long bookid,Long num){

OrderLine l = map.get(bookid);

l.setNum(num);

}

public void dropLine(Long bookid){

map.remove(bookid);

}

public double getCost(){

Collection<OrderLine> lines =

map.values();

double cost = 0;

for(OrderLine line:lines){

long num = line.getNum();

double price = line.getBook().getPrice();

cost = cost+num*price;

}

return cost;

}

public OrderLine getLine(Long bookid){

return map.get(bookid);

}

public void dropAll(){

map.clear();

}

}