package cn.edu.nuc.shop.controller;

import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;

import javax.servlet.http.HttpSession;

import org.springframework.beans.factory.annotation.Autowired;
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 cn.edu.nuc.shop.entiry.Forder;
import cn.edu.nuc.shop.entiry.Product;
import cn.edu.nuc.shop.entiry.Sorder;
import cn.edu.nuc.shop.service.interfaces.ForderService;
import cn.edu.nuc.shop.service.interfaces.ProductService;
import cn.edu.nuc.shop.service.interfaces.SorderService;

@Controller
@RequestMapping("/sorder")
public class SorderController {
	
	@Autowired
	private SorderService sorderService;
	@Autowired
	private ProductService productService;
	@Autowired
	private ForderService forderService;
	
	

	@RequestMapping(value="/add",method=RequestMethod.POST)
	public String addSorder(Product product,HttpSession session) {
		
		System.out.println("-------addCar()------"+product.getNumber());
		
		// 1:通过 product.id获取当前的商品数据
		Product findproduct = productService.findById(product.getPid());
		
		findproduct.setNumber(product.getNumber());
		
		//2:判断当前session是否有购物车，如果没有则创建
		if (session.getAttribute("forder")==null) {
			
			//创建购物车，存到session中
			session.setAttribute("forder", new Forder(new HashSet<Sorder>()));
		}
		Forder forder = (Forder)session.getAttribute("forder");
		//3:把商品信息转化为sorder,并且添加到购物车中(判断购物车是否重复)
	
		forder = sorderService.addSorder(forder, findproduct);
		forder.setTotal(forderService.cluTotal(forder));
		
		System.out.println(forder);
		
		return "redirect:/car.jsp";
	}
	
	
	@RequestMapping(value="/delete",method=RequestMethod.GET)
	public String deleteSorder(Product product,HttpSession session) {
		
		Forder forder = (Forder)session.getAttribute("forder");
		
		Set<Sorder> set = forder.getSorderSet();
		
		
		 Iterator<Sorder> iterator = set.iterator();
		
		 while(iterator.hasNext()){
			 
			 Sorder sorder = iterator.next();
			 if(sorder.getProduct().getPid()==product.getPid()){
				
					 iterator.remove();
					 forder.setTotal(forder.getTotal()-sorder.getPrice()*sorder.getNumber());	 
			}
	    }
		 if( set.size() <= 0){
			 
			 session.removeAttribute("forder");
		 }
		return "redirect:/car.jsp";
	}
	
	@RequestMapping(value="/clear",method=RequestMethod.GET)
	public String clearSorder(Product product,HttpSession session) {
		
		Forder forder = (Forder)session.getAttribute("forder");
		
		Set<Sorder> set = forder.getSorderSet();
		
		set.clear();
		forder.setTotal(0d);
		 session.removeAttribute("forder");
		
		return "redirect:/car.jsp";
	}
	
	@RequestMapping(value="/listbyfid",method=RequestMethod.GET)
	public String listSorder(Forder forder,Model model) {
		
		List<Sorder> byfidlistSorder  = sorderService.listSorderByfid(forder.getFid());
		
		model.addAttribute("listSorder", byfidlistSorder);
		
		return "sorder/list";
	}
	
	
}