package com.cargo.db;

import javax.servlet.http.HttpServletRequest;
import java.util.Collection;
import java.util.ArrayList;
import com.cargo.model.Ware;
import java.util.Iterator;
import javax.servlet.http.HttpSession;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2004</p>
 * <p>Company: MR</p>
 * @author BWM
 * @version 1.0
 */

public class Car {
    private Collection c;
    private Collection becoll = new ArrayList();
    public Car(Collection coll) {
        c = coll;
    }

    public Collection AddtoCar(Ware ware) {
        boolean flag = true;
        ware.setNum(1);
        ware.setSumprice(ware.getPrice());
        if (ware.getId() == null || ware.getId().length() <= 0) {
            return c;
        }
        //第一次添加商品
        if (c == null || c.isEmpty()) {
            c = new ArrayList();
            c.add(ware);
            return c;
        } else {
            Iterator it = c.iterator();
            while (it.hasNext()) {
                Ware beware = (Ware) it.next();
                if (beware.getId().equals(ware.getId())) {
                    beware.setNum((beware.getNum()) + 1);
                    beware.setSumprice(beware.getNum() * beware.getPrice());
                    flag = false;
                }
                becoll.add(beware);
            }
            if (flag) {
                becoll.add(ware);
            }
            return becoll;
        }
    }

    public Collection ChangetoCar(Ware ware) {
        boolean flag = false;
        if (ware.getId() == null || ware.getId().length() <= 0) {
            return c;
        }
        if (c == null || c.isEmpty()) {
            c = new ArrayList();
            c.add(ware);
            return c;
        } else {
            Iterator it = c.iterator();
            while (it.hasNext()) {
                Ware beware = (Ware) it.next();
                if (beware.getId().equals(ware.getId())) {
                    beware.setNum(ware.getNum());
                    beware.setSumprice(ware.getNum() * beware.getPrice());
                    if (beware.getNum() == 0) {
                        flag = true;
                    }
                }
                if (!flag) {
                    becoll.add(beware);
                    flag = false;
                }
            }
            return becoll;
        }
    }

    public Collection DeltoCar(Ware ware) {
        if (ware.getId() == null || ware.getId().length() <= 0) {
            return c;
        }
        if (c == null || c.isEmpty()) {
            c = new ArrayList();
            c.add(ware);
            return c;
        } else {
            Iterator it = c.iterator();
            while (it.hasNext()) {
                Ware beware = (Ware) it.next();
                if (!beware.getId().equals(ware.getId())) {
                    becoll.add(beware);
                }
            }
            return becoll;
        }
    }
}