package com.hp.school.controller;

import java.awt.image.BufferedImage;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

import javax.imageio.ImageIO;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

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.hp.school.entity.User;
import com.hp.school.service.UserService;
import com.hp.school.utils.CpachaUtil;

/**
 * ������ --  ��ͬ�� struts2
 * ��ģ�鿪�� -- Ϊ����ֲ�ͬ�� ģ�� /system  ·��
 */
@Controller
@RequestMapping("/system")
public class SystemController {
	
	@Autowired
	private UserService userService;

	/**
	 * ���� ����
	 * @param model
	 * @return
	 */
	@RequestMapping(value="/index",method=RequestMethod.GET)
	public ModelAndView index(ModelAndView model){
		model.addObject("key", "dddddddddddd");
		model.setViewName("system/index");
		return model;
	}
	
	
	/**
	 * ��ת�� login.jsp
	 * @return
	 */
	@RequestMapping(value="/login",method=RequestMethod.GET)
	public ModelAndView toLogin(ModelAndView model){
		model.setViewName("system/login");
		return model;
	}
	
	@RequestMapping(value="/vcode",method=RequestMethod.GET)
	public void get_cpacha(
			HttpServletResponse response,
			HttpServletRequest request,
			@RequestParam(name="vl",defaultValue="4",required=false) Integer vl,
			@RequestParam(name="w",defaultValue="98",required=false) Integer w,
			@RequestParam(name="h",defaultValue="33",required=false) Integer h
			){
		//1. ������֤�� ���� 
		CpachaUtil cpachaUtil = new CpachaUtil(vl,w,h);
		//2. �����֤��
		String generatorVCode = cpachaUtil.generatorVCode();
		request.getSession().setAttribute("code", generatorVCode);//����session
		
		//3. ��ɱ���ͼ
		BufferedImage generatorVCodeImage = cpachaUtil.generatorVCodeImage(generatorVCode, true);
		
		//4. �� generatorVCodeImage ���ص�jspҳ��
		try {
			ImageIO.write(generatorVCodeImage, "gif", response.getOutputStream());
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
	
	
	/**
	 * ��½
	 * @return   Map<String,String>  ��mapԭ��,���� ����̨��� ������jsp
	 */
	@RequestMapping(value="/login",method=RequestMethod.POST)
	@ResponseBody	//����json���   
	public Map<String,String> login(
			HttpServletRequest request,
			@RequestParam(name="username",required=true) String username,
			@RequestParam(name="password",required=true) String password,
			@RequestParam(name="vcode",required=true) String vcode,
			@RequestParam(name="type",required=true) int type
			){
		Map<String,String> map = new HashMap<String, String>();
		
		//��̨��֤ 
		if(StringUtils.isEmpty(username)){	//�ж��û����Ƿ�Ϊ��
			map.put("type", "error");
			map.put("msg", "�û�����Ϊ��!");
			return map;
		}
		if(StringUtils.isEmpty(password)){	
			map.put("type", "error");
			map.put("msg", "���벻��Ϊ��!");
			return map;
		}
		
		if(StringUtils.isEmpty(vcode)){	//�ж��û����Ƿ�Ϊ��
			map.put("type", "error");
			map.put("msg", "��֤�벻��Ϊ��!");
			return map;
		}
		
		//��session��ȡ����֤��
		String code = (String) request.getSession().getAttribute("code");
		if(StringUtils.isEmpty(code)){	
			map.put("type", "error");
			map.put("msg", "��ʱ��δ����,��֤��ʧЧ!");
			return map;
		}
		
		
		if(!vcode.toUpperCase().equals(code.toUpperCase())){
			map.put("type", "error");
			map.put("msg", "��֤�����!");
			return map;
		}
		
		//TODO ������ݿ� 
		// ���session�� ��� ��֤��
		request.getSession().setAttribute("code", null);
		
		if(type==1){	//����Ա
			User user = userService.findUserByUserName(username);
			if(user==null){
				map.put("type", "error");
				map.put("msg", "���û�������!");
				return map;
			}
			//��֤����
			if(!password.equals(user.getPassword())){
				map.put("type", "error");
				map.put("msg", "�������!");
				return map;
			}
			
			//�û�û������Բ�ѯ�� ,����session
			request.getSession().setAttribute("user", user);
		}else{
			//TODO  ѧ���½
			System.out.println("ѧ���½.......");
		}
		
		map.put("type", "success");
		map.put("msg", "�û���½�ɹ�!");
		return map;
	}
}