package com.gxw.controller;

import java.util.Date;
import java.util.HashMap;
import java.util.Map;

import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.ModelAndView;

import com.gxw.page.Page;
import com.gxw.pojo.News;
import com.gxw.service.NewsService;


/**
 *新闻控制器
 *完成增删改查，以及分页
 *@author GXWadmin
 *
 */
@RequestMapping("/news")
@Controller
public class NewsController {
	
	@Autowired
	private NewsService newsService;
	
	/**
	 * 新闻管理列表页
	 * @param model
	 * @return
	 */
	@RequestMapping(value="/list",method=RequestMethod.GET)
	public ModelAndView list(ModelAndView model){
		model.setViewName("news/news_list");
		return model;
	}
	
	/**
	 * 获取新闻信息列表
	 * @param nTitle
	 * @param page
	 * @return
	 */
	@RequestMapping(value="/get_list",method=RequestMethod.POST)
	@ResponseBody
	public Map<String, Object> getList(
			@RequestParam(value="nTitle",required=false,defaultValue="") String nTitle,
			Page page
			){
		Map<String, Object> map = new HashMap<String, Object>();
		Map<String, Object> queryMap = new HashMap<String, Object>();
		queryMap.put("nTitle", "%"+nTitle+"%");
		queryMap.put("offset", page.getOffset());
		queryMap.put("pageSize", page.getRows());
		map.put("rows", newsService.findList(queryMap));
		map.put("total", newsService.getTotal(queryMap));
		return map;
	}
	
	/**
	 * 删除新闻操作
	 * @param news
	 * @return
	 */
	@RequestMapping(value="/delete",method=RequestMethod.POST)
	@ResponseBody
	public Map<String, String> delete(
			@RequestParam(value="nids[]",required=true) Long[] nids
		){
		Map<String, String> ret = new HashMap<String, String>();
		if(nids == null){
			ret.put("type", "error");
			ret.put("msg", "请选择要删除的数据!");
			return ret;
		}
		String idsString = "";
		for(Long nid:nids){
			idsString += nid + ",";
		}
		idsString = idsString.substring(0,idsString.length()-1);
		if(newsService.delete(idsString) <= 0){
			ret.put("type", "error");
			ret.put("msg", "删除失败!");
			return ret;
		}
		ret.put("type", "success");
		ret.put("msg", "修改成功!");
		return ret;
	}
	
	/**
	 * 编辑新闻操作
	 * @param news
	 * @return
	 */
	@RequestMapping(value="/edit",method=RequestMethod.POST)
	@ResponseBody
	public Map<String, String> edit(News news){
		Map<String, String> map = new HashMap<String, String>();
		if(news == null){
			map.put("type", "error");
			map.put("msg", "数据绑定出错，请联系后台管理员!");
			return map;
		}
		if(StringUtils.isEmpty(news.getnTitle())){
			map.put("type", "error");
			map.put("msg", "标题不能为空!");
			return map;
		}
		if(StringUtils.isEmpty(news.getnContent())){
			map.put("type", "error");
			map.put("msg", "描述不能为空!");
			return map;
		}
		News existNews = newsService.findByTitle(news.getnTitle());
		if(existNews != null){
			if(news.getNid() != existNews.getNid()){
				map.put("type", "error");
				map.put("msg", "该标题已经存在!");
				return map;
			}
		}
		if(newsService.edit(news) <= 0){
			map.put("type", "error");
			map.put("msg", "修改失败!");
			return map;
		}
		map.put("type", "success");
		map.put("msg", "修改成功!");
		return map;
	}
	
	
	/**
	 * 添加新闻操作
	 * @param news
	 * @return
	 */
	@RequestMapping(value="/add",method=RequestMethod.POST)
	@ResponseBody
	public Map<String, String> add(News news){
		Map<String, String> ret = new HashMap<String, String>();
		if(news == null){
			ret.put("type", "error");
			ret.put("msg", "数据绑定出错，请联系开发作者!");
			return ret;
		}
		if(StringUtils.isEmpty(news.getnTitle())){
			ret.put("type", "error");
			ret.put("msg", "标题不能为空!");
			return ret;
		}
		if(StringUtils.isEmpty(news.getnContent())){
			ret.put("type", "error");
			ret.put("msg", "内容不能为空!");
			return ret;
		}
		News existNews = newsService.findByTitle(news.getnTitle());
		news.setnDate(new Date());
		if(existNews != null){
			ret.put("type", "error");
			ret.put("msg", "该标题已经存在!");
			return ret;
		}
		if(newsService.add(news) <= 0){
			ret.put("type", "error");
			ret.put("msg", "添加失败!");
			return ret;
		}
		ret.put("type", "success");
		ret.put("msg", "添加成功!");
		return ret;
	}
	
}