package com.pengsong.springmvc.controller;

import java.io.IOException;
import java.util.List;

import javax.annotation.Resource;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;

import com.pengsong.springmvc.dao.CommDao;
import com.pengsong.springmvc.entity.Page;
import com.pengsong.springmvc.entity.User;

@Controller
@RequestMapping("user")
public class UserController {
	
	@Resource 
	private CommDao commdao;
	private List<User> userList = null;
	private User findUser;
	private Page findpage;
	
	/**
	 * 返回分页查询结果集
	 * @param user
	 * @return
	 */
	public List<User> findAllUsers(Page page) {
		try {
			userList = commdao.findList("findAllUserByPage",page);
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return userList;
	}
	/**
	 * 获得数据总量
	 * @return
	 */
	public int getUserListSize() {
		try {
			userList = commdao.findList("findAllUser",null);
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return userList.size();
	}
	@RequestMapping(value="userLogin",method=RequestMethod.POST)
	private String userLogin(User user,Model model) {
		// TODO Auto-generated method stub
		if(user!= null){
			try {
				findUser = (User) commdao.findOne("findAllUser", user);
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		if(findUser!=null){
			findpage = new Page();
			findpage.setTotalCount(getUserListSize());
			userList = findAllUsers(findpage);
			model.addAttribute("userList", userList);
			model.addAttribute("page", findpage);
			return "userList";
		}else{
			model.addAttribute("loginMessage", "用户名或密码不正确，请重新登录");
			return "../../index";
		}
		
	}
	
	@RequestMapping("/findAllUser/{pageNow}")
	public ModelAndView findAllUser(@PathVariable("pageNow")String pageNow,ModelAndView modelAndView) {
		findpage = new Page();
		findpage.setPageNow(Integer.parseInt(pageNow));
		findpage.setTotalCount(getUserListSize());
	
		userList = findAllUsers(findpage);
		if(!userList.isEmpty())
			modelAndView.setViewName("userList");
			modelAndView.addObject("userList", userList);
			modelAndView.addObject("page", findpage);
		return modelAndView;
	}
	@RequestMapping("/addUser")
	private String addUser() {
		
		return "addUser";
	}
	@RequestMapping("/addOneUser")
	private ModelAndView addOneUser(User user,ModelAndView modelAndView) {
		// TODO Auto-generated method stub
		int flag = 0;
		try {
			flag = commdao.save("addOneUser", user);
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		if(flag>0){
			findpage = new Page();
			findpage.setTotalCount(getUserListSize());
			modelAndView.setViewName("userList");
			modelAndView.addObject("userList", findAllUsers(findpage));
			modelAndView.addObject("page", findpage);
		}
		else{
			modelAndView.addObject("addUser", "增加用户失败！");
			modelAndView.setViewName("addUser");
		}
		return modelAndView;
	}
	@RequestMapping("/delete/{userId}")
	private ModelAndView delete(@PathVariable Integer userId,ModelAndView modelAndView) {
		// TODO Auto-generated method stub
		findUser = new User();
		findUser.setUserId(userId);
		try {
			commdao.deleteById("deleteUser", findUser);
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		findpage = new Page();
		findpage.setTotalCount(getUserListSize());
		modelAndView.addObject("userList", findAllUsers(findpage));
		modelAndView.addObject("page", findpage);
		modelAndView.setViewName("userList");
		
		return modelAndView;
	}
	/**
	 * 使用restful风格进行增删改查
	 * @param userId
	 * @param modelAndView
	 * @return
	 */
	@RequestMapping("/update/{userId}")
	public ModelAndView update(@PathVariable Integer userId,ModelAndView modelAndView){
		findUser = new User();
		findUser.setUserId(userId);
		try {
			findUser = (User) commdao.findOne("findAllUser", findUser);
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		modelAndView.addObject("findUser", findUser);
		modelAndView.setViewName("updateUser");
		
		return modelAndView;
	}
	@RequestMapping("/updateOneUser")
	private ModelAndView updateOneUser(User user,ModelAndView modelAndView) {
		// TODO Auto-generated method stub
		try {
			commdao.update("updateOneUser", user);
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		findpage = new Page();
		findpage.setTotalCount(getUserListSize());
		modelAndView.addObject("userList", findAllUsers(findpage));
		modelAndView.addObject("page", findpage);
		modelAndView.setViewName("userList");
		
		return modelAndView;
	}
}