OrderController.java

/**
 * Most of the code in the Qalingo project is copyrighted Hoteia and licensed
 * under the Apache License Version 2.0 (release version 0.8.0)
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 *                   Copyright (c) Hoteia, 2012-2014
 * http://www.hoteia.com - http://twitter.com/hoteia - contact@hoteia.com
 *
 */
package org.hoteia.qalingo.web.mvc.controller.order;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import javax.servlet.http.HttpServletRequest;

import org.apache.commons.lang.StringUtils;
import org.hoteia.qalingo.core.Constants;
import org.hoteia.qalingo.core.ModelConstants;
import org.hoteia.qalingo.core.RequestConstants;
import org.hoteia.qalingo.core.domain.OrderPurchase;
import org.hoteia.qalingo.core.domain.enumtype.BoUrls;
import org.hoteia.qalingo.core.service.OrderPurchaseService;
import org.hoteia.qalingo.core.web.mvc.viewbean.OrderViewBean;
import org.hoteia.qalingo.core.web.resolver.RequestData;
import org.hoteia.qalingo.core.web.servlet.ModelAndViewThemeDevice;
import org.hoteia.qalingo.core.web.servlet.view.RedirectView;
import org.hoteia.qalingo.web.mvc.controller.AbstractBusinessBackofficeController;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.support.PagedListHolder;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;

/**
 * 
 */
@Controller("orderController")
public class OrderController extends AbstractBusinessBackofficeController {

	@Autowired
	private OrderPurchaseService orderPurchaseService;

	@RequestMapping(value = BoUrls.ORDER_LIST_URL, method = RequestMethod.GET)
	public ModelAndView orderList(final HttpServletRequest request, final Model model) throws Exception {
		ModelAndViewThemeDevice modelAndView = new ModelAndViewThemeDevice(getCurrentVelocityPath(request), BoUrls.ORDER_LIST.getVelocityPage());
        final RequestData requestData = requestUtil.getRequestData(request);
        
		displayList(request, model, requestData);
		
        overrideDefaultMainContentTitle(request, modelAndView, BoUrls.ORDER_LIST.getKey() + ".by.market.area", null);

        return modelAndView;
	}
	
	@RequestMapping(value = BoUrls.ORDER_DETAILS_URL, method = RequestMethod.GET)
	public ModelAndView orderDetails(final HttpServletRequest request, final Model model) throws Exception {
		ModelAndViewThemeDevice modelAndView = new ModelAndViewThemeDevice(getCurrentVelocityPath(request), BoUrls.ORDER_DETAILS.getVelocityPage());
        final RequestData requestData = requestUtil.getRequestData(request);
        
		final String orderNum = request.getParameter(RequestConstants.REQUEST_PARAMETER_ORDER_NUM);
		final OrderPurchase orderPurchase = orderPurchaseService.getOrderByOrderNum(orderNum);
		
		if(orderPurchase != null){
	        modelAndView.addObject(ModelConstants.ORDER_VIEW_BEAN, backofficeViewBeanFactory.buildViewBeanOrder(requestUtil.getRequestData(request), orderPurchase));
		} else {
			final String url = requestUtil.getLastRequestUrl(request);
			return new ModelAndView(new RedirectView(url));
		}
		
        model.addAttribute(ModelConstants.URL_BACK, backofficeUrlService.generateUrl(BoUrls.ORDER_LIST, requestData));
        
        Object[] params = {orderPurchase.getOrderNum()};
        overrideDefaultMainContentTitle(request, modelAndView, BoUrls.ORDER_DETAILS.getKey(), params);
		
        return modelAndView;
	}
	
    protected void displayList(final HttpServletRequest request, final Model model, final RequestData requestData) throws Exception {
        String url = request.getRequestURI();
        String page = request.getParameter(Constants.PAGINATION_PAGE_PARAMETER);
        String sessionKey = "PagedListHolder_Orders";
        
        PagedListHolder<OrderViewBean> orderViewBeanPagedListHolder = new PagedListHolder<OrderViewBean>();
        
        if(StringUtils.isEmpty(page)){
            orderViewBeanPagedListHolder = initList(request, sessionKey);
            
        } else {
            orderViewBeanPagedListHolder = (PagedListHolder) request.getSession().getAttribute(sessionKey); 
            if (orderViewBeanPagedListHolder == null) { 
                orderViewBeanPagedListHolder = initList(request, sessionKey);
            }
            int pageTarget = new Integer(page).intValue() - 1;
            int pageCurrent = orderViewBeanPagedListHolder.getPage();
            if (pageCurrent < pageTarget) { 
                for (int i = pageCurrent; i < pageTarget; i++) {
                    orderViewBeanPagedListHolder.nextPage(); 
                }
            } else if (pageCurrent > pageTarget) { 
                for (int i = pageTarget; i < pageCurrent; i++) {
                    orderViewBeanPagedListHolder.previousPage(); 
                }
            } 
        }
        model.addAttribute(Constants.PAGINATION_PAGE_URL, url);
        model.addAttribute(Constants.PAGINATION_PAGE_PAGED_LIST_HOLDER, orderViewBeanPagedListHolder);
    }
        
	private PagedListHolder<OrderViewBean> initList(final HttpServletRequest request, String sessionKey) throws Exception{
		PagedListHolder<OrderViewBean> orderViewBeanPagedListHolder = new PagedListHolder<OrderViewBean>();
		
		final List<OrderViewBean> orderViewBeans = new ArrayList<OrderViewBean>();

		final List<OrderPurchase> orderPurchases = orderPurchaseService.findOrders();
		for (Iterator<OrderPurchase> iterator = orderPurchases.iterator(); iterator.hasNext();) {
			OrderPurchase orderPurchase = (OrderPurchase) iterator.next();
			orderViewBeans.add(backofficeViewBeanFactory.buildViewBeanOrder(requestUtil.getRequestData(request), orderPurchase));
		}
		orderViewBeanPagedListHolder = new PagedListHolder<OrderViewBean>(orderViewBeans);
		orderViewBeanPagedListHolder.setPageSize(Constants.PAGE_SIZE);
        request.getSession().setAttribute(sessionKey, orderViewBeanPagedListHolder); 
        return orderViewBeanPagedListHolder;
	}
    
}